From 6e80e3d87549bbe6768bdfc46e6e2e84673c9acd Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Wed, 24 Sep 2014 02:42:40 +0900 Subject: ARM: exynos_defconfig: Enable MAX77802 Enabled MAX77802 pmic for exynos systems. One config USB_ANNOUNCE_NEW_DEVICES to display device information on connect. Another config for I2C_CHARDEV to see i2c device nodes. Signed-off-by: Vivek Gautam Signed-off-by: Javier Martinez Canillas Reviewed-by: Doug Anderson Signed-off-by: Kukjin Kim --- arch/arm/configs/exynos_defconfig | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch') diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig index fc7d1683bf67..03c48609e01e 100644 --- a/arch/arm/configs/exynos_defconfig +++ b/arch/arm/configs/exynos_defconfig @@ -68,6 +68,7 @@ CONFIG_HW_RANDOM=y CONFIG_TCG_TPM=y CONFIG_TCG_TIS_I2C_INFINEON=y CONFIG_I2C=y +CONFIG_I2C_CHARDEV=y CONFIG_I2C_MUX=y CONFIG_I2C_ARB_GPIO_CHALLENGE=y CONFIG_I2C_EXYNOS5=y @@ -96,6 +97,7 @@ CONFIG_REGULATOR_FIXED_VOLTAGE=y CONFIG_REGULATOR_GPIO=y CONFIG_REGULATOR_MAX8997=y CONFIG_REGULATOR_MAX77686=y +CONFIG_REGULATOR_MAX77802=y CONFIG_REGULATOR_S2MPA01=y CONFIG_REGULATOR_S2MPS11=y CONFIG_REGULATOR_S5M8767=y @@ -115,6 +117,7 @@ CONFIG_SND_SOC=y CONFIG_SND_SOC_SAMSUNG=y CONFIG_SND_SOC_SNOW=y CONFIG_USB=y +CONFIG_USB_ANNOUNCE_NEW_DEVICES=y CONFIG_USB_XHCI_HCD=y CONFIG_USB_EHCI_HCD=y CONFIG_USB_EHCI_EXYNOS=y -- cgit v1.2.3 From a5ec3a4860374a0f1a5075359fd30a594cb2bed7 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 24 Sep 2014 02:42:49 +0900 Subject: ARM: exynos_defconfig: Enable Atmel maXTouch support Many Exynos based Chromebooks have an Atmel trackpad so enable support for it by default will make easier for users. Signed-off-by: Javier Martinez Canillas Signed-off-by: Kukjin Kim --- arch/arm/configs/exynos_defconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig index 03c48609e01e..46cac201cf3c 100644 --- a/arch/arm/configs/exynos_defconfig +++ b/arch/arm/configs/exynos_defconfig @@ -60,6 +60,7 @@ CONFIG_KEYBOARD_CROS_EC=y # CONFIG_MOUSE_PS2 is not set CONFIG_MOUSE_CYAPA=y CONFIG_INPUT_TOUCHSCREEN=y +CONFIG_TOUCHSCREEN_ATMEL_MXT=y CONFIG_SERIAL_8250=y CONFIG_SERIAL_SAMSUNG=y CONFIG_SERIAL_SAMSUNG_CONSOLE=y -- cgit v1.2.3 From 4c79279940988d55bfe7596a61d3784f1ae1bca7 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 24 Sep 2014 02:42:52 +0900 Subject: ARM: exynos_defconfig: Enable Control Groups support systemd needs control groups support to be enabled in the kernel so let's enable it by default since is quite likely that a user-space with systemd will be used. Signed-off-by: Javier Martinez Canillas Signed-off-by: Kukjin Kim --- arch/arm/configs/exynos_defconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig index 46cac201cf3c..89d2d8f3a7f0 100644 --- a/arch/arm/configs/exynos_defconfig +++ b/arch/arm/configs/exynos_defconfig @@ -1,6 +1,7 @@ CONFIG_SYSVIPC=y CONFIG_NO_HZ=y CONFIG_HIGH_RES_TIMERS=y +CONFIG_CGROUPS=y CONFIG_BLK_DEV_INITRD=y CONFIG_KALLSYMS_ALL=y CONFIG_MODULES=y -- cgit v1.2.3 From 3e95b7b7367801f115b9fcf63063a5c1ea34de20 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Mon, 18 Aug 2014 11:25:51 -0500 Subject: ARM: exynos_defconfig: Enable SBS battery support Many Exynos5 boards (e.g: Snow, Peach Pit and Pi) have a SBS-compliant gas gauge battery. Enable to built it so the needed support is available for these boards. Suggested-by: Doug Anderson Signed-off-by: Javier Martinez Canillas Reviewed-by: Doug Anderson Reviewed-by: Bartlomiej Zolnierkiewicz Signed-off-by: Kukjin Kim --- arch/arm/configs/exynos_defconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig index 89d2d8f3a7f0..b9902adab07a 100644 --- a/arch/arm/configs/exynos_defconfig +++ b/arch/arm/configs/exynos_defconfig @@ -80,6 +80,7 @@ CONFIG_SPI_S3C64XX=y CONFIG_I2C_S3C2410=y CONFIG_DEBUG_GPIO=y CONFIG_POWER_SUPPLY=y +CONFIG_BATTERY_SBS=y CONFIG_CHARGER_TPS65090=y # CONFIG_HWMON is not set CONFIG_THERMAL=y -- cgit v1.2.3 From b756dc48b7645f8753516c49594157e45ba3e4f1 Mon Sep 17 00:00:00 2001 From: Tomasz Figa Date: Sun, 14 Sep 2014 02:10:35 +0900 Subject: ARM: dts: Fix pull setting in sd4_width8 pin group for exynos4x12 The group has the samsung,pin-pud property set to 4, which is not a correct value. This patch fixes this by replacing it with 3, which is the correct value for pull-up. Signed-off-by: Tomasz Figa Signed-off-by: Kukjin Kim --- arch/arm/boot/dts/exynos4x12-pinctrl.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi b/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi index 99b26df8dbc7..0865a2e33f97 100644 --- a/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi +++ b/arch/arm/boot/dts/exynos4x12-pinctrl.dtsi @@ -675,7 +675,7 @@ sd4_bus8: sd4-bus-width8 { samsung,pins = "gpk1-3", "gpk1-4", "gpk1-5", "gpk1-6"; samsung,pin-function = <4>; - samsung,pin-pud = <4>; + samsung,pin-pud = <3>; samsung,pin-drv = <3>; }; -- cgit v1.2.3 From 2c054716a57c6eac839e94129b17f73930e817eb Mon Sep 17 00:00:00 2001 From: Tomasz Figa Date: Wed, 24 Sep 2014 02:10:04 +0900 Subject: ARM: SAMSUNG: Restore Samsung PM Debug functionality Due to recently merged patches and previous merge conflicts, the Samsung PM Debug functionality no longer can be enabled. This patch fixes incorrect dependency of SAMSUNG_PM_DEBUG on an integer symbol and adds missing header inclusion. Signed-off-by: Tomasz Figa Signed-off-by: Kukjin Kim --- arch/arm/plat-samsung/Kconfig | 5 +++-- arch/arm/plat-samsung/pm-debug.c | 1 + 2 files changed, 4 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig index c87aefbf3a13..9bd2776e7d05 100644 --- a/arch/arm/plat-samsung/Kconfig +++ b/arch/arm/plat-samsung/Kconfig @@ -268,8 +268,9 @@ config S5P_DEV_MFC comment "Power management" config SAMSUNG_PM_DEBUG - bool "S3C2410 PM Suspend debug" - depends on PM && DEBUG_KERNEL && DEBUG_S3C_UART + bool "Samsung PM Suspend debug" + depends on PM && DEBUG_KERNEL + depends on DEBUG_EXYNOS_UART || DEBUG_S3C24XX_UART || DEBUG_S3C2410_UART help Say Y here if you want verbose debugging from the PM Suspend and Resume code. See diff --git a/arch/arm/plat-samsung/pm-debug.c b/arch/arm/plat-samsung/pm-debug.c index 8f19f66388dd..39609601f407 100644 --- a/arch/arm/plat-samsung/pm-debug.c +++ b/arch/arm/plat-samsung/pm-debug.c @@ -14,6 +14,7 @@ */ #include +#include #include #include -- cgit v1.2.3 From 658cff0de56ebb1baa581f605dd92015366c511f Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Wed, 24 Sep 2014 02:18:27 +0900 Subject: ARM: EXYNOS: Fix build with PM_SLEEP=n and ARM_EXYNOS_CPUIDLE=n Fix building of exynos_defconfig with disabled CONFIG_PM_SLEEP by adding checking whether Exynos cpuidle support is enabled before accessing exynos_enter_aftr. The build error message: arch/arm/mach-exynos/built-in.o:(.data+0x74): undefined reference to `exynos_enter_aftr' make: *** [vmlinux] Error 1 This patch has been tested on Exynos4210 based Origen board. Signed-off-by: Bartlomiej Zolnierkiewicz Acked-by: Kyungmin Park Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/exynos.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch') diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index 6a24e111d6e1..d57f136a5a81 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -161,7 +161,9 @@ static void exynos_restart(enum reboot_mode mode, const char *cmd) static struct platform_device exynos_cpuidle = { .name = "exynos_cpuidle", +#ifdef CONFIG_ARM_EXYNOS_CPUIDLE .dev.platform_data = exynos_enter_aftr, +#endif .id = -1, }; -- cgit v1.2.3 From f6f1ae82bd288bceed5a93594a8a081845f11b41 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Wed, 24 Sep 2014 02:18:32 +0900 Subject: ARM: mm: Fix ifdef around cpu_*_do_[suspend, resume] ops Ifdef around cpu_\name\()_do_suspend and cpu_\name\()_do_resume ops in proc-macros.S should check for CONFIG_ARM_CPU_SUSPEND and not CONFIG_PM_SLEEP. Fix it. [ Please note that cpu_v7_do_[suspend,resume] code in proc-v7.S already correctly checks for CONFIG_ARM_CPU_SUSPEND, same is true for functions for other architectures. ] This fix is needed for decoupling suspend/resume and advanced cpuidle support on Exynos platform (next patch fixes build for config with CONFIG_PM_SLEEP=n and CONFIG_ARM_EXYNOS_CPUIDLE=y). If this fix is not present then the following OOPS happens on the first attempt to go into advanced cpuidle mode (AFTR): [ 22.244143] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 22.250759] pgd = c0004000 [ 22.253445] [00000000] *pgd=00000000 [ 22.257012] Internal error: Oops: 80000007 [#1] PREEMPT SMP ARM [ 22.262906] Modules linked in: [ 22.265949] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-next-20140811-dirty #730 [ 22.273757] task: c05dce68 ti: c05d2000 task.ti: c05d2000 [ 22.279139] PC is at 0x0 [ 22.281661] LR is at __cpu_suspend_save+0x4c/0xa8 [ 22.286344] pc : [<00000000>] lr : [] psr: a0000093 [ 22.286344] sp : c05d3ef4 ip : c05da414 fp : 00000001 [ 22.297799] r10: c05da414 r9 : c0609cb0 r8 : 0000000f [ 22.303008] r7 : c05da444 r6 : 00000038 r5 : ea802c00 r4 : c05d3f14 [ 22.309517] r3 : 00000000 r2 : c05d3f4c r1 : 00000038 r0 : c05d3f20 [ 22.316029] Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel [ 22.323406] Control: 10c5387d Table: 69d5404a DAC: 00000015 [ 22.329135] Process swapper/0 (pid: 0, stack limit = 0xc05d2240) [ 22.335124] Stack: (0xc05d3ef4 to 0xc05d4000) [ 22.339466] 3ee0: ea802c00 00000038 c05d3f4c [ 22.347626] 3f00: 00000000 00000007 c00123bc 00000000 c001d468 6a888000 c05d3f4c 80000000 [ 22.355785] 3f20: 00000007 c003d3a0 0000193d eaf9dde4 eaf9dde4 c02ef0c8 c000969c fffffffe [ 22.363944] 3f40: 00000000 c0037b54 eaf9dbb8 e9d1a380 00000000 c001d468 c0609cb0 00000000 [ 22.372103] 3f60: c0609cb0 c061649e 00000001 c001250c eaf9dbb8 00000001 c0609cb0 c001d618 [ 22.380262] 3f80: c001d5d0 c02ef56c 2d9d2e1e 00000005 eaf9dbb8 c02edcc4 2d9d2e1e 00000005 [ 22.388421] 3fa0: c040446c c05da4ec c040446c eaf9dbb8 c05cfbb0 c004c580 c05dce68 c05b3ae8 [ 22.396580] 3fc0: 00000000 c058bb24 ffffffff ffffffff c058b5e4 00000000 00000000 c05b3ae8 [ 22.404740] 3fe0: c0616994 c05da47c c05b3ae4 c05ddeec 4000406a 40008074 00000000 00000000 [ 22.412909] [] (__cpu_suspend_save) from [] (__cpu_suspend+0x5c/0x70) [ 22.421074] [] (__cpu_suspend) from [] (init_thread_union+0x1f4c/0x2000) [ 22.429479] Code: bad PC value [ 22.432518] ---[ end trace fb90ebf4217d0ad9 ]--- [ 22.437116] Kernel panic - not syncing: Attempted to kill the idle task! [ 22.443800] Rebooting in 5 seconds.. This patch has been tested on Exynos4210 based Origen board. Signed-off-by: Bartlomiej Zolnierkiewicz Acked-by: Kyungmin Park Signed-off-by: Kukjin Kim --- arch/arm/mm/proc-macros.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S index ee1d80593958..ba1196c968d8 100644 --- a/arch/arm/mm/proc-macros.S +++ b/arch/arm/mm/proc-macros.S @@ -279,7 +279,7 @@ ENTRY(\name\()_processor_functions) .if \suspend .word cpu_\name\()_suspend_size -#ifdef CONFIG_PM_SLEEP +#ifdef CONFIG_ARM_CPU_SUSPEND .word cpu_\name\()_do_suspend .word cpu_\name\()_do_resume #else -- cgit v1.2.3 From 7a512b03235d422b5d008022bd34b64ed0dcd9a7 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 24 Sep 2014 03:19:29 +0900 Subject: ARM: exynos_defconfig: Enable Maxim 77693 and I2C GPIO drivers The Exynos System-on-Chips have ~7 distinctive I2C IO ports (exact number depends on chip). However some integrated circuits on board, also using I2C protocol for communication, can be connected to the SoC by other GPIO. Enabling the I2C GPIO driver allows using such additional integrated circuits. An example of such chip using I2C and connected over GPIO to SoC is Maxim 77693 MUIC on Trats2 board. The regulator driver of Maxim 77693 offers charger and safeout LDO (necessary for USB OTG). Signed-off-by: Krzysztof Kozlowski Signed-off-by: Kukjin Kim --- arch/arm/configs/exynos_defconfig | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch') diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig index b9902adab07a..b75fbac3894b 100644 --- a/arch/arm/configs/exynos_defconfig +++ b/arch/arm/configs/exynos_defconfig @@ -74,6 +74,7 @@ CONFIG_I2C_CHARDEV=y CONFIG_I2C_MUX=y CONFIG_I2C_ARB_GPIO_CHALLENGE=y CONFIG_I2C_EXYNOS5=y +CONFIG_I2C_GPIO=y CONFIG_I2C_CROS_EC_TUNNEL=y CONFIG_SPI=y CONFIG_SPI_S3C64XX=y @@ -92,6 +93,7 @@ CONFIG_MFD_CROS_EC=y CONFIG_MFD_CROS_EC_I2C=y CONFIG_MFD_CROS_EC_SPI=y CONFIG_MFD_MAX77686=y +CONFIG_MFD_MAX77693=y CONFIG_MFD_MAX8997=y CONFIG_MFD_SEC_CORE=y CONFIG_MFD_TPS65090=y @@ -101,6 +103,7 @@ CONFIG_REGULATOR_GPIO=y CONFIG_REGULATOR_MAX8997=y CONFIG_REGULATOR_MAX77686=y CONFIG_REGULATOR_MAX77802=y +CONFIG_REGULATOR_MAX77693=y CONFIG_REGULATOR_S2MPA01=y CONFIG_REGULATOR_S2MPS11=y CONFIG_REGULATOR_S5M8767=y -- cgit v1.2.3 From 37d181bbfe387346b00bd722acfdf93685ac73b3 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Tue, 11 Mar 2014 13:41:04 -0400 Subject: SH: define syscall_get_arch() for superh This patch defines syscall_get_arch() for the superh platform. It does so in both syscall_32.h and syscall_64.h. I'm not certain if the implementation in syscall_64.h couldn't just be used in syscall.h as I can't really track the setting of CONFIG_64BIT... This way is safe, but we might be able to combine these if a superh person were able to review... [v2] fixed indentation stoopidity (Sergei Shtylyov) use AUDIT_ARCH_SH instead of EM_SH Based-on-patch-by: Richard Briggs Signed-off-by: Eric Paris Cc: linux-sh@vger.kernel.org --- arch/sh/include/asm/syscall_32.h | 10 ++++++++++ arch/sh/include/asm/syscall_64.h | 14 ++++++++++++++ 2 files changed, 24 insertions(+) (limited to 'arch') diff --git a/arch/sh/include/asm/syscall_32.h b/arch/sh/include/asm/syscall_32.h index 7d80df4f09cb..95be3b0ce0ac 100644 --- a/arch/sh/include/asm/syscall_32.h +++ b/arch/sh/include/asm/syscall_32.h @@ -1,6 +1,7 @@ #ifndef __ASM_SH_SYSCALL_32_H #define __ASM_SH_SYSCALL_32_H +#include #include #include #include @@ -93,4 +94,13 @@ static inline void syscall_set_arguments(struct task_struct *task, } } +static inline int syscall_get_arch(void) +{ + int arch = AUDIT_ARCH_SH; + +#ifdef CONFIG_CPU_LITTLE_ENDIAN + arch |= __AUDIT_ARCH_LE; +#endif + return arch; +} #endif /* __ASM_SH_SYSCALL_32_H */ diff --git a/arch/sh/include/asm/syscall_64.h b/arch/sh/include/asm/syscall_64.h index c3561ca72bee..c6a797b90b80 100644 --- a/arch/sh/include/asm/syscall_64.h +++ b/arch/sh/include/asm/syscall_64.h @@ -1,6 +1,7 @@ #ifndef __ASM_SH_SYSCALL_64_H #define __ASM_SH_SYSCALL_64_H +#include #include #include #include @@ -61,4 +62,17 @@ static inline void syscall_set_arguments(struct task_struct *task, memcpy(®s->regs[2 + i], args, n * sizeof(args[0])); } +static inline int syscall_get_arch(void) +{ + int arch = AUDIT_ARCH_SH; + +#ifdef CONFIG_64BIT + arch |= __AUDIT_ARCH_64BIT; +#endif +#ifdef CONFIG_CPU_LITTLE_ENDIAN + arch |= __AUDIT_ARCH_LE; +#endif + + return arch; +} #endif /* __ASM_SH_SYSCALL_64_H */ -- cgit v1.2.3 From 4b4665e13cef9ba66f3ce53548e6bf49530de2e5 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Tue, 18 Mar 2014 15:35:57 -0400 Subject: UM: implement syscall_get_arch() This patch defines syscall_get_arch() for the um platform. It adds a new syscall.h header file to define this. It copies the HOST_AUDIT_ARCH definition from ptrace.h. (that definition will be removed when we switch audit to use this new syscall_get_arch() function) Based-on-patch-by: Richard Briggs Signed-off-by: Eric Paris Cc: user-mode-linux-devel@lists.sourceforge.net --- arch/x86/um/asm/syscall.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 arch/x86/um/asm/syscall.h (limited to 'arch') diff --git a/arch/x86/um/asm/syscall.h b/arch/x86/um/asm/syscall.h new file mode 100644 index 000000000000..9fe77b7b5a0e --- /dev/null +++ b/arch/x86/um/asm/syscall.h @@ -0,0 +1,15 @@ +#ifndef __UM_ASM_SYSCALL_H +#define __UM_ASM_SYSCALL_H + +#include + +static inline int syscall_get_arch(void) +{ +#ifdef CONFIG_X86_32 + return AUDIT_ARCH_I386; +#else + return AUDIT_ARCH_X86_64; +#endif +} + +#endif /* __UM_ASM_SYSCALL_H */ -- cgit v1.2.3 From 0451623ad780a478b11c29736dae506e0059966a Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Wed, 19 Mar 2014 19:04:52 -0400 Subject: Alpha: define syscall_get_arch() Since Alpha supports syscall audit it now needs to have a syscall.h which implements syscall_get_arch() rather than hard coding this value into audit_syscall_entry(). Based-on-patch-by: Richard Briggs Signed-off-by: Eric Paris Cc: linux-alpha@vger.kernel.org --- arch/alpha/include/asm/syscall.h | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 arch/alpha/include/asm/syscall.h (limited to 'arch') diff --git a/arch/alpha/include/asm/syscall.h b/arch/alpha/include/asm/syscall.h new file mode 100644 index 000000000000..88d28eb2a566 --- /dev/null +++ b/arch/alpha/include/asm/syscall.h @@ -0,0 +1,11 @@ +#ifndef _ASM_ALPHA_SYSCALL_H +#define _ASM_ALPHA_SYSCALL_H + +#include + +static inline int syscall_get_arch(void) +{ + return AUDIT_ARCH_ALPHA; +} + +#endif /* _ASM_ALPHA_SYSCALL_H */ -- cgit v1.2.3 From ce5d112827e5c2e9864323d0efd7ec2a62c6dce0 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Tue, 11 Mar 2014 13:50:46 -0400 Subject: ARCH: AUDIT: implement syscall_get_arch for all arches For all arches which support audit implement syscall_get_arch() They are all pretty easy and straight forward, stolen from how the call to audit_syscall_entry() determines the arch. Based-on-patch-by: Richard Briggs Signed-off-by: Eric Paris Cc: linux-ia64@vger.kernel.org Cc: microblaze-uclinux@itee.uq.edu.au Cc: linux-mips@linux-mips.org Cc: linux@lists.openrisc.net Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: sparclinux@vger.kernel.org --- arch/ia64/include/asm/syscall.h | 6 ++++++ arch/microblaze/include/asm/syscall.h | 5 +++++ arch/mips/include/asm/syscall.h | 2 +- arch/openrisc/include/asm/syscall.h | 5 +++++ arch/parisc/include/asm/syscall.h | 11 +++++++++++ arch/powerpc/include/asm/syscall.h | 12 ++++++++++++ arch/sparc/include/asm/syscall.h | 8 ++++++++ include/uapi/linux/audit.h | 1 + 8 files changed, 49 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/ia64/include/asm/syscall.h b/arch/ia64/include/asm/syscall.h index a7ff1c6ab068..1d0b875fec44 100644 --- a/arch/ia64/include/asm/syscall.h +++ b/arch/ia64/include/asm/syscall.h @@ -13,6 +13,7 @@ #ifndef _ASM_SYSCALL_H #define _ASM_SYSCALL_H 1 +#include #include #include @@ -79,4 +80,9 @@ static inline void syscall_set_arguments(struct task_struct *task, ia64_syscall_get_set_arguments(task, regs, i, n, args, 1); } + +static inline int syscall_get_arch(void) +{ + return AUDIT_ARCH_IA64; +} #endif /* _ASM_SYSCALL_H */ diff --git a/arch/microblaze/include/asm/syscall.h b/arch/microblaze/include/asm/syscall.h index 9bc431783105..53cfaf34c343 100644 --- a/arch/microblaze/include/asm/syscall.h +++ b/arch/microblaze/include/asm/syscall.h @@ -1,6 +1,7 @@ #ifndef __ASM_MICROBLAZE_SYSCALL_H #define __ASM_MICROBLAZE_SYSCALL_H +#include #include #include #include @@ -99,4 +100,8 @@ static inline void syscall_set_arguments(struct task_struct *task, asmlinkage long do_syscall_trace_enter(struct pt_regs *regs); asmlinkage void do_syscall_trace_leave(struct pt_regs *regs); +static inline int syscall_get_arch(void) +{ + return AUDIT_ARCH_MICROBLAZE; +} #endif /* __ASM_MICROBLAZE_SYSCALL_H */ diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h index 17960fe7a8ce..93b3b86c293c 100644 --- a/arch/mips/include/asm/syscall.h +++ b/arch/mips/include/asm/syscall.h @@ -129,7 +129,7 @@ extern const unsigned long sysn32_call_table[]; static inline int syscall_get_arch(void) { - int arch = EM_MIPS; + int arch = AUDIT_ARCH_MIPS; #ifdef CONFIG_64BIT if (!test_thread_flag(TIF_32BIT_REGS)) arch |= __AUDIT_ARCH_64BIT; diff --git a/arch/openrisc/include/asm/syscall.h b/arch/openrisc/include/asm/syscall.h index b752bb67891d..2db9f1cf0694 100644 --- a/arch/openrisc/include/asm/syscall.h +++ b/arch/openrisc/include/asm/syscall.h @@ -19,6 +19,7 @@ #ifndef __ASM_OPENRISC_SYSCALL_H__ #define __ASM_OPENRISC_SYSCALL_H__ +#include #include #include @@ -71,4 +72,8 @@ syscall_set_arguments(struct task_struct *task, struct pt_regs *regs, memcpy(®s->gpr[3 + i], args, n * sizeof(args[0])); } +static inline int syscall_get_arch(void) +{ + return AUDIT_ARCH_OPENRISC; +} #endif diff --git a/arch/parisc/include/asm/syscall.h b/arch/parisc/include/asm/syscall.h index 8bdfd2c8c39f..a5eba95d87fe 100644 --- a/arch/parisc/include/asm/syscall.h +++ b/arch/parisc/include/asm/syscall.h @@ -3,6 +3,8 @@ #ifndef _ASM_PARISC_SYSCALL_H_ #define _ASM_PARISC_SYSCALL_H_ +#include +#include #include #include @@ -37,4 +39,13 @@ static inline void syscall_get_arguments(struct task_struct *tsk, } } +static inline int syscall_get_arch(void) +{ + int arch = AUDIT_ARCH_PARISC; +#ifdef CONFIG_64BIT + if (!is_compat_task()) + arch = AUDIT_ARCH_PARISC64; +#endif + return arch; +} #endif /*_ASM_PARISC_SYSCALL_H_*/ diff --git a/arch/powerpc/include/asm/syscall.h b/arch/powerpc/include/asm/syscall.h index b54b2add07be..427154444f6d 100644 --- a/arch/powerpc/include/asm/syscall.h +++ b/arch/powerpc/include/asm/syscall.h @@ -13,6 +13,8 @@ #ifndef _ASM_SYSCALL_H #define _ASM_SYSCALL_H 1 +#include +#include #include /* ftrace syscalls requires exporting the sys_call_table */ @@ -86,4 +88,14 @@ static inline void syscall_set_arguments(struct task_struct *task, memcpy(®s->gpr[3 + i], args, n * sizeof(args[0])); } +static inline int syscall_get_arch(void) +{ + int arch = AUDIT_ARCH_PPC; + +#ifdef CONFIG_PPC64 + if (!is_32bit_task()) + arch = AUDIT_ARCH_PPC64; +#endif + return arch; +} #endif /* _ASM_SYSCALL_H */ diff --git a/arch/sparc/include/asm/syscall.h b/arch/sparc/include/asm/syscall.h index 025a02ad2e31..fed3d511b108 100644 --- a/arch/sparc/include/asm/syscall.h +++ b/arch/sparc/include/asm/syscall.h @@ -1,9 +1,11 @@ #ifndef __ASM_SPARC_SYSCALL_H #define __ASM_SPARC_SYSCALL_H +#include #include #include #include +#include /* * The syscall table always contains 32 bit pointers since we know that the @@ -124,4 +126,10 @@ static inline void syscall_set_arguments(struct task_struct *task, regs->u_regs[UREG_I0 + i + j] = args[j]; } +static inline int syscall_get_arch(void) +{ + return test_thread_flag(TIF_32BIT) ? AUDIT_ARCH_SPARC + : AUDIT_ARCH_SPARC64; +} + #endif /* __ASM_SPARC_SYSCALL_H */ diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h index df71b1d2cbb8..4d100c841c80 100644 --- a/include/uapi/linux/audit.h +++ b/include/uapi/linux/audit.h @@ -351,6 +351,7 @@ enum { #define AUDIT_ARCH_IA64 (EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) #define AUDIT_ARCH_M32R (EM_M32R) #define AUDIT_ARCH_M68K (EM_68K) +#define AUDIT_ARCH_MICROBLAZE (EM_MICROBLAZE) #define AUDIT_ARCH_MIPS (EM_MIPS) #define AUDIT_ARCH_MIPSEL (EM_MIPS|__AUDIT_ARCH_LE) #define AUDIT_ARCH_MIPS64 (EM_MIPS|__AUDIT_ARCH_64BIT) -- cgit v1.2.3 From 91397401bb5072f71e8ce8744ad0bdec3e875a91 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Tue, 11 Mar 2014 13:29:28 -0400 Subject: ARCH: AUDIT: audit_syscall_entry() should not require the arch We have a function where the arch can be queried, syscall_get_arch(). So rather than have every single piece of arch specific code use and/or duplicate syscall_get_arch(), just have the audit code use the syscall_get_arch() code. Based-on-patch-by: Richard Briggs Signed-off-by: Eric Paris Cc: linux-alpha@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-ia64@vger.kernel.org Cc: microblaze-uclinux@itee.uq.edu.au Cc: linux-mips@linux-mips.org Cc: linux@lists.openrisc.net Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-s390@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: sparclinux@vger.kernel.org Cc: user-mode-linux-devel@lists.sourceforge.net Cc: linux-xtensa@linux-xtensa.org Cc: x86@kernel.org --- arch/alpha/kernel/ptrace.c | 2 +- arch/arm/kernel/ptrace.c | 4 ++-- arch/ia64/kernel/ptrace.c | 2 +- arch/microblaze/kernel/ptrace.c | 3 +-- arch/mips/kernel/ptrace.c | 4 +--- arch/openrisc/kernel/ptrace.c | 3 +-- arch/parisc/kernel/ptrace.c | 9 +++------ arch/powerpc/kernel/ptrace.c | 7 ++----- arch/s390/kernel/ptrace.c | 4 +--- arch/sh/kernel/ptrace_32.c | 14 +------------- arch/sh/kernel/ptrace_64.c | 17 +---------------- arch/sparc/kernel/ptrace_64.c | 9 ++------- arch/um/kernel/ptrace.c | 3 +-- arch/x86/kernel/ptrace.c | 8 ++------ arch/x86/um/asm/ptrace.h | 4 ---- arch/xtensa/kernel/ptrace.c | 2 +- include/linux/audit.h | 7 ++++--- 17 files changed, 25 insertions(+), 77 deletions(-) (limited to 'arch') diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c index 86d835157b54..d9ee81769899 100644 --- a/arch/alpha/kernel/ptrace.c +++ b/arch/alpha/kernel/ptrace.c @@ -321,7 +321,7 @@ asmlinkage unsigned long syscall_trace_enter(void) if (test_thread_flag(TIF_SYSCALL_TRACE) && tracehook_report_syscall_entry(current_pt_regs())) ret = -1UL; - audit_syscall_entry(AUDIT_ARCH_ALPHA, regs->r0, regs->r16, regs->r17, regs->r18, regs->r19); + audit_syscall_entry(regs->r0, regs->r16, regs->r17, regs->r18, regs->r19); return ret ?: current_pt_regs()->r0; } diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index 0c27ed6f3f23..6af95986fbf7 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -944,8 +944,8 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs, int scno) if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) trace_sys_enter(regs, scno); - audit_syscall_entry(AUDIT_ARCH_ARM, scno, regs->ARM_r0, regs->ARM_r1, - regs->ARM_r2, regs->ARM_r3); + audit_syscall_entry(scno, regs->ARM_r0, regs->ARM_r1, regs->ARM_r2, + regs->ARM_r3); return scno; } diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c index b7a5fffe0924..6f54d511cc50 100644 --- a/arch/ia64/kernel/ptrace.c +++ b/arch/ia64/kernel/ptrace.c @@ -1219,7 +1219,7 @@ syscall_trace_enter (long arg0, long arg1, long arg2, long arg3, ia64_sync_krbs(); - audit_syscall_entry(AUDIT_ARCH_IA64, regs.r15, arg0, arg1, arg2, arg3); + audit_syscall_entry(regs.r15, arg0, arg1, arg2, arg3); return 0; } diff --git a/arch/microblaze/kernel/ptrace.c b/arch/microblaze/kernel/ptrace.c index 39cf50841f6d..bb10637ce688 100644 --- a/arch/microblaze/kernel/ptrace.c +++ b/arch/microblaze/kernel/ptrace.c @@ -147,8 +147,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) */ ret = -1L; - audit_syscall_entry(EM_MICROBLAZE, regs->r12, regs->r5, regs->r6, - regs->r7, regs->r8); + audit_syscall_entry(regs->r12, regs->r5, regs->r6, regs->r7, regs->r8); return ret ?: regs->r12; } diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index f639ccd5060c..d8a76f97a053 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -649,9 +649,7 @@ asmlinkage long syscall_trace_enter(struct pt_regs *regs, long syscall) if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) trace_sys_enter(regs, regs->regs[2]); - audit_syscall_entry(syscall_get_arch(), - syscall, - regs->regs[4], regs->regs[5], + audit_syscall_entry(syscall, regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]); return syscall; } diff --git a/arch/openrisc/kernel/ptrace.c b/arch/openrisc/kernel/ptrace.c index 71a2a0c34c65..4f59fa4e34e5 100644 --- a/arch/openrisc/kernel/ptrace.c +++ b/arch/openrisc/kernel/ptrace.c @@ -187,8 +187,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) */ ret = -1L; - audit_syscall_entry(AUDIT_ARCH_OPENRISC, regs->gpr[11], - regs->gpr[3], regs->gpr[4], + audit_syscall_entry(regs->gpr[11], regs->gpr[3], regs->gpr[4], regs->gpr[5], regs->gpr[6]); return ret ? : regs->gpr[11]; diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c index e842ee233db4..74814577e4b8 100644 --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -276,14 +276,11 @@ long do_syscall_trace_enter(struct pt_regs *regs) #ifdef CONFIG_64BIT if (!is_compat_task()) - audit_syscall_entry(AUDIT_ARCH_PARISC64, - regs->gr[20], - regs->gr[26], regs->gr[25], - regs->gr[24], regs->gr[23]); + audit_syscall_entry(regs->gr[20], regs->gr[26], regs->gr[25], + regs->gr[24], regs->gr[23]); else #endif - audit_syscall_entry(AUDIT_ARCH_PARISC, - regs->gr[20] & 0xffffffff, + audit_syscall_entry(regs->gr[20] & 0xffffffff, regs->gr[26] & 0xffffffff, regs->gr[25] & 0xffffffff, regs->gr[24] & 0xffffffff, diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index 2e3d2bf536c5..524a943a33bb 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -1788,14 +1788,11 @@ long do_syscall_trace_enter(struct pt_regs *regs) #ifdef CONFIG_PPC64 if (!is_32bit_task()) - audit_syscall_entry(AUDIT_ARCH_PPC64, - regs->gpr[0], - regs->gpr[3], regs->gpr[4], + audit_syscall_entry(regs->gpr[0], regs->gpr[3], regs->gpr[4], regs->gpr[5], regs->gpr[6]); else #endif - audit_syscall_entry(AUDIT_ARCH_PPC, - regs->gpr[0], + audit_syscall_entry(regs->gpr[0], regs->gpr[3] & 0xffffffff, regs->gpr[4] & 0xffffffff, regs->gpr[5] & 0xffffffff, diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 5dc7ad9e2fbf..910f253b22bc 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -828,9 +828,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) trace_sys_enter(regs, regs->gprs[2]); - audit_syscall_entry(is_compat_task() ? - AUDIT_ARCH_S390 : AUDIT_ARCH_S390X, - regs->gprs[2], regs->orig_gpr2, + audit_syscall_entry(regs->gprs[2], regs->orig_gpr2, regs->gprs[3], regs->gprs[4], regs->gprs[5]); out: diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c index 668c81631c08..c1a6b89bfe70 100644 --- a/arch/sh/kernel/ptrace_32.c +++ b/arch/sh/kernel/ptrace_32.c @@ -484,17 +484,6 @@ long arch_ptrace(struct task_struct *child, long request, return ret; } -static inline int audit_arch(void) -{ - int arch = EM_SH; - -#ifdef CONFIG_CPU_LITTLE_ENDIAN - arch |= __AUDIT_ARCH_LE; -#endif - - return arch; -} - asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) { long ret = 0; @@ -513,8 +502,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) trace_sys_enter(regs, regs->regs[0]); - audit_syscall_entry(audit_arch(), regs->regs[3], - regs->regs[4], regs->regs[5], + audit_syscall_entry(regs->regs[3], regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]); return ret ?: regs->regs[0]; diff --git a/arch/sh/kernel/ptrace_64.c b/arch/sh/kernel/ptrace_64.c index af90339dadcd..5cea973a65b2 100644 --- a/arch/sh/kernel/ptrace_64.c +++ b/arch/sh/kernel/ptrace_64.c @@ -504,20 +504,6 @@ asmlinkage int sh64_ptrace(long request, long pid, return sys_ptrace(request, pid, addr, data); } -static inline int audit_arch(void) -{ - int arch = EM_SH; - -#ifdef CONFIG_64BIT - arch |= __AUDIT_ARCH_64BIT; -#endif -#ifdef CONFIG_CPU_LITTLE_ENDIAN - arch |= __AUDIT_ARCH_LE; -#endif - - return arch; -} - asmlinkage long long do_syscall_trace_enter(struct pt_regs *regs) { long long ret = 0; @@ -536,8 +522,7 @@ asmlinkage long long do_syscall_trace_enter(struct pt_regs *regs) if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) trace_sys_enter(regs, regs->regs[9]); - audit_syscall_entry(audit_arch(), regs->regs[1], - regs->regs[2], regs->regs[3], + audit_syscall_entry(regs->regs[1], regs->regs[2], regs->regs[3], regs->regs[4], regs->regs[5]); return ret ?: regs->regs[9]; diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c index c13c9f25d83a..9ddc4928a089 100644 --- a/arch/sparc/kernel/ptrace_64.c +++ b/arch/sparc/kernel/ptrace_64.c @@ -1076,13 +1076,8 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs) if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) trace_sys_enter(regs, regs->u_regs[UREG_G1]); - audit_syscall_entry((test_thread_flag(TIF_32BIT) ? - AUDIT_ARCH_SPARC : - AUDIT_ARCH_SPARC64), - regs->u_regs[UREG_G1], - regs->u_regs[UREG_I0], - regs->u_regs[UREG_I1], - regs->u_regs[UREG_I2], + audit_syscall_entry(regs->u_regs[UREG_G1], regs->u_regs[UREG_I0], + regs->u_regs[UREG_I1], regs->u_regs[UREG_I2], regs->u_regs[UREG_I3]); return ret; diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c index 694d551c8899..62435ef003d9 100644 --- a/arch/um/kernel/ptrace.c +++ b/arch/um/kernel/ptrace.c @@ -165,8 +165,7 @@ static void send_sigtrap(struct task_struct *tsk, struct uml_pt_regs *regs, */ void syscall_trace_enter(struct pt_regs *regs) { - audit_syscall_entry(HOST_AUDIT_ARCH, - UPT_SYSCALL_NR(®s->regs), + audit_syscall_entry(UPT_SYSCALL_NR(®s->regs), UPT_SYSCALL_ARG1(®s->regs), UPT_SYSCALL_ARG2(®s->regs), UPT_SYSCALL_ARG3(®s->regs), diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c index 678c0ada3b3c..eb1c87f0b03b 100644 --- a/arch/x86/kernel/ptrace.c +++ b/arch/x86/kernel/ptrace.c @@ -1488,15 +1488,11 @@ long syscall_trace_enter(struct pt_regs *regs) trace_sys_enter(regs, regs->orig_ax); if (IS_IA32) - audit_syscall_entry(AUDIT_ARCH_I386, - regs->orig_ax, - regs->bx, regs->cx, + audit_syscall_entry(regs->orig_ax, regs->bx, regs->cx, regs->dx, regs->si); #ifdef CONFIG_X86_64 else - audit_syscall_entry(AUDIT_ARCH_X86_64, - regs->orig_ax, - regs->di, regs->si, + audit_syscall_entry(regs->orig_ax, regs->di, regs->si, regs->dx, regs->r10); #endif diff --git a/arch/x86/um/asm/ptrace.h b/arch/x86/um/asm/ptrace.h index 54f8102ccde5..e59eef20647b 100644 --- a/arch/x86/um/asm/ptrace.h +++ b/arch/x86/um/asm/ptrace.h @@ -47,8 +47,6 @@ struct user_desc; #ifdef CONFIG_X86_32 -#define HOST_AUDIT_ARCH AUDIT_ARCH_I386 - extern int ptrace_get_thread_area(struct task_struct *child, int idx, struct user_desc __user *user_desc); @@ -57,8 +55,6 @@ extern int ptrace_set_thread_area(struct task_struct *child, int idx, #else -#define HOST_AUDIT_ARCH AUDIT_ARCH_X86_64 - #define PT_REGS_R8(r) UPT_R8(&(r)->regs) #define PT_REGS_R9(r) UPT_R9(&(r)->regs) #define PT_REGS_R10(r) UPT_R10(&(r)->regs) diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c index 562fac664751..4d54b481123b 100644 --- a/arch/xtensa/kernel/ptrace.c +++ b/arch/xtensa/kernel/ptrace.c @@ -342,7 +342,7 @@ void do_syscall_trace_enter(struct pt_regs *regs) do_syscall_trace(); #if 0 - audit_syscall_entry(current, AUDIT_ARCH_XTENSA..); + audit_syscall_entry(...); #endif } diff --git a/include/linux/audit.h b/include/linux/audit.h index 22cfddb75566..bb1c3ab611bf 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -26,6 +26,7 @@ #include #include #include +#include struct audit_sig_info { uid_t uid; @@ -141,12 +142,12 @@ static inline void audit_free(struct task_struct *task) if (unlikely(task->audit_context)) __audit_free(task); } -static inline void audit_syscall_entry(int arch, int major, unsigned long a0, +static inline void audit_syscall_entry(int major, unsigned long a0, unsigned long a1, unsigned long a2, unsigned long a3) { if (unlikely(current->audit_context)) - __audit_syscall_entry(arch, major, a0, a1, a2, a3); + __audit_syscall_entry(syscall_get_arch(), major, a0, a1, a2, a3); } static inline void audit_syscall_exit(void *pt_regs) { @@ -322,7 +323,7 @@ static inline int audit_alloc(struct task_struct *task) } static inline void audit_free(struct task_struct *task) { } -static inline void audit_syscall_entry(int arch, int major, unsigned long a0, +static inline void audit_syscall_entry(int major, unsigned long a0, unsigned long a1, unsigned long a2, unsigned long a3) { } -- cgit v1.2.3 From 75dddcbd9651eec29708f91149e405cd42cf68d7 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Tue, 22 Apr 2014 12:07:30 -0400 Subject: sparc: simplify syscall_get_arch() Include linux/thread_info.h so we can use is_32_bit_task() cleanly. Then just simplify syscall_get_arch() since is_32_bit_task() works for all configuration options. Suggested-by: Stephen Rothwell Signed-off-by: Eric Paris --- arch/powerpc/include/asm/syscall.h | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/include/asm/syscall.h b/arch/powerpc/include/asm/syscall.h index 427154444f6d..6fa2708da153 100644 --- a/arch/powerpc/include/asm/syscall.h +++ b/arch/powerpc/include/asm/syscall.h @@ -14,8 +14,8 @@ #define _ASM_SYSCALL_H 1 #include -#include #include +#include /* ftrace syscalls requires exporting the sys_call_table */ #ifdef CONFIG_FTRACE_SYSCALLS @@ -90,12 +90,6 @@ static inline void syscall_set_arguments(struct task_struct *task, static inline int syscall_get_arch(void) { - int arch = AUDIT_ARCH_PPC; - -#ifdef CONFIG_PPC64 - if (!is_32bit_task()) - arch = AUDIT_ARCH_PPC64; -#endif - return arch; + return is_32bit_task() ? AUDIT_ARCH_PPC : AUDIT_ARCH_PPC64; } #endif /* _ASM_SYSCALL_H */ -- cgit v1.2.3 From 01ed102c8522a71d6d05824dd4dc3e17ee9b6d29 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Tue, 22 Apr 2014 16:22:07 +1000 Subject: sparc: properly conditionalize use of TIF_32BIT After merging the audit tree, today's linux-next build (sparc defconfig) failed like this: In file included from include/linux/audit.h:29:0, from mm/mmap.c:33: arch/sparc/include/asm/syscall.h: In function 'syscall_get_arch': arch/sparc/include/asm/syscall.h:131:9: error: 'TIF_32BIT' undeclared (first use in this function) arch/sparc/include/asm/syscall.h:131:9: note: each undeclared identifier is reported only once for each function it appears in And many more ... Caused by commit 374c0c054122 ("ARCH: AUDIT: implement syscall_get_arch for all arches"). This patch wraps the usage of TIF_32BIT in: if defined(__sparc__) && defined(__arch64__) Which solves the build problem. Signed-off-by: Stephen Rothwell Acked-by: Richard Guy Briggs Signed-off-by: Eric Paris --- arch/sparc/include/asm/syscall.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch') diff --git a/arch/sparc/include/asm/syscall.h b/arch/sparc/include/asm/syscall.h index fed3d511b108..a5a8153766b3 100644 --- a/arch/sparc/include/asm/syscall.h +++ b/arch/sparc/include/asm/syscall.h @@ -128,8 +128,12 @@ static inline void syscall_set_arguments(struct task_struct *task, static inline int syscall_get_arch(void) { +#if defined(__sparc__) && defined(__arch64__) return test_thread_flag(TIF_32BIT) ? AUDIT_ARCH_SPARC : AUDIT_ARCH_SPARC64; +#else + return AUDIT_ARCH_SPARC; +#endif } #endif /* __ASM_SPARC_SYSCALL_H */ -- cgit v1.2.3 From a17c8b54dc738c4fda31e8be0302cd131a04c19f Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Tue, 22 Apr 2014 12:39:51 -0400 Subject: sparc: implement is_32bit_task We are currently embedding the same check from thread_info.h into syscall.h thanks to the way syscall_get_arch() was implemented in the audit tree. Instead create a new function, is_32bit_task() which is similar to that found on the powerpc arch. This simplifies the syscall.h code and makes the build/Kconfig requirements much easier to understand. Signed-off-by: Eric Paris Cc: Stephen Rothwell Cc: sparclinux@vger.kernel.org --- arch/sparc/include/asm/syscall.h | 7 +------ arch/sparc/include/asm/thread_info_32.h | 2 ++ arch/sparc/include/asm/thread_info_64.h | 2 ++ 3 files changed, 5 insertions(+), 6 deletions(-) (limited to 'arch') diff --git a/arch/sparc/include/asm/syscall.h b/arch/sparc/include/asm/syscall.h index a5a8153766b3..49f71fd5b56e 100644 --- a/arch/sparc/include/asm/syscall.h +++ b/arch/sparc/include/asm/syscall.h @@ -128,12 +128,7 @@ static inline void syscall_set_arguments(struct task_struct *task, static inline int syscall_get_arch(void) { -#if defined(__sparc__) && defined(__arch64__) - return test_thread_flag(TIF_32BIT) ? AUDIT_ARCH_SPARC - : AUDIT_ARCH_SPARC64; -#else - return AUDIT_ARCH_SPARC; -#endif + return is_32bit_task() ? AUDIT_ARCH_SPARC : AUDIT_ARCH_SPARC64; } #endif /* __ASM_SPARC_SYSCALL_H */ diff --git a/arch/sparc/include/asm/thread_info_32.h b/arch/sparc/include/asm/thread_info_32.h index 96efa7adc223..025c98446b1e 100644 --- a/arch/sparc/include/asm/thread_info_32.h +++ b/arch/sparc/include/asm/thread_info_32.h @@ -130,6 +130,8 @@ register struct thread_info *current_thread_info_reg asm("g6"); #define _TIF_DO_NOTIFY_RESUME_MASK (_TIF_NOTIFY_RESUME | \ _TIF_SIGPENDING) +#define is_32bit_task() (1) + #endif /* __KERNEL__ */ #endif /* _ASM_THREAD_INFO_H */ diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h index a5f01ac6d0f1..5a4f6600e624 100644 --- a/arch/sparc/include/asm/thread_info_64.h +++ b/arch/sparc/include/asm/thread_info_64.h @@ -219,6 +219,8 @@ register struct thread_info *current_thread_info_reg asm("g6"); _TIF_NEED_RESCHED) #define _TIF_DO_NOTIFY_RESUME_MASK (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING) +#define is_32bit_task() (test_thread_flag(TIF_32BIT)) + /* * Thread-synchronous status. * -- cgit v1.2.3 From b4f0d3755c5e9cc86292d5fd78261903b4f23d4a Mon Sep 17 00:00:00 2001 From: Richard Guy Briggs Date: Tue, 4 Mar 2014 10:38:06 -0500 Subject: audit: x86: drop arch from __audit_syscall_entry() interface Since the arch is found locally in __audit_syscall_entry(), there is no need to pass it in as a parameter. Delete it from the parameter list. x86* was the only arch to call __audit_syscall_entry() directly and did so from assembly code. Signed-off-by: Richard Guy Briggs Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-audit@redhat.com Signed-off-by: Eric Paris --- As this patch relies on changes in the audit tree, I think it appropriate to send it through my tree rather than the x86 tree. --- arch/x86/ia32/ia32entry.S | 12 ++++++------ arch/x86/kernel/entry_32.S | 11 +++++------ arch/x86/kernel/entry_64.S | 11 +++++------ include/linux/audit.h | 5 ++--- kernel/auditsc.c | 6 ++---- 5 files changed, 20 insertions(+), 25 deletions(-) (limited to 'arch') diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S index 4299eb05023c..f5bdd2881815 100644 --- a/arch/x86/ia32/ia32entry.S +++ b/arch/x86/ia32/ia32entry.S @@ -186,12 +186,12 @@ sysexit_from_sys_call: #ifdef CONFIG_AUDITSYSCALL .macro auditsys_entry_common - movl %esi,%r9d /* 6th arg: 4th syscall arg */ - movl %edx,%r8d /* 5th arg: 3rd syscall arg */ - /* (already in %ecx) 4th arg: 2nd syscall arg */ - movl %ebx,%edx /* 3rd arg: 1st syscall arg */ - movl %eax,%esi /* 2nd arg: syscall number */ - movl $AUDIT_ARCH_I386,%edi /* 1st arg: audit arch */ + movl %esi,%r8d /* 5th arg: 4th syscall arg */ + movl %ecx,%r9d /*swap with edx*/ + movl %edx,%ecx /* 4th arg: 3rd syscall arg */ + movl %r9d,%edx /* 3rd arg: 2nd syscall arg */ + movl %ebx,%esi /* 2nd arg: 1st syscall arg */ + movl %eax,%edi /* 1st arg: syscall number */ call __audit_syscall_entry movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall number */ cmpq $(IA32_NR_syscalls-1),%rax diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 0d0c9d4ab6d5..f9e3fabc8716 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -449,12 +449,11 @@ sysenter_audit: jnz syscall_trace_entry addl $4,%esp CFI_ADJUST_CFA_OFFSET -4 - /* %esi already in 8(%esp) 6th arg: 4th syscall arg */ - /* %edx already in 4(%esp) 5th arg: 3rd syscall arg */ - /* %ecx already in 0(%esp) 4th arg: 2nd syscall arg */ - movl %ebx,%ecx /* 3rd arg: 1st syscall arg */ - movl %eax,%edx /* 2nd arg: syscall number */ - movl $AUDIT_ARCH_I386,%eax /* 1st arg: audit arch */ + movl %esi,4(%esp) /* 5th arg: 4th syscall arg */ + movl %edx,(%esp) /* 4th arg: 3rd syscall arg */ + /* %ecx already in %ecx 3rd arg: 2nd syscall arg */ + movl %ebx,%edx /* 2nd arg: 1st syscall arg */ + /* %eax already in %eax 1st arg: syscall number */ call __audit_syscall_entry pushl_cfi %ebx movl PT_EAX(%esp),%eax /* reload syscall number */ diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index c844f0816ab8..5e8cb2ad9fb3 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -488,12 +488,11 @@ badsys: * jump back to the normal fast path. */ auditsys: - movq %r10,%r9 /* 6th arg: 4th syscall arg */ - movq %rdx,%r8 /* 5th arg: 3rd syscall arg */ - movq %rsi,%rcx /* 4th arg: 2nd syscall arg */ - movq %rdi,%rdx /* 3rd arg: 1st syscall arg */ - movq %rax,%rsi /* 2nd arg: syscall number */ - movl $AUDIT_ARCH_X86_64,%edi /* 1st arg: audit arch */ + movq %r10,%r8 /* 5th arg: 4th syscall arg */ + movq %rdx,%rcx /* 4th arg: 3rd syscall arg */ + movq %rsi,%rdx /* 3rd arg: 2nd syscall arg */ + movq %rdi,%rsi /* 2nd arg: 1st syscall arg */ + movq %rax,%rdi /* 1st arg: syscall number */ call __audit_syscall_entry LOAD_ARGS 0 /* reload call-clobbered registers */ jmp system_call_fastpath diff --git a/include/linux/audit.h b/include/linux/audit.h index 783157b289e8..1ae00891aff9 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -115,8 +115,7 @@ extern void audit_log_session_info(struct audit_buffer *ab); /* Public API */ extern int audit_alloc(struct task_struct *task); extern void __audit_free(struct task_struct *task); -extern void __audit_syscall_entry(int arch, - int major, unsigned long a0, unsigned long a1, +extern void __audit_syscall_entry(int major, unsigned long a0, unsigned long a1, unsigned long a2, unsigned long a3); extern void __audit_syscall_exit(int ret_success, long ret_value); extern struct filename *__audit_reusename(const __user char *uptr); @@ -148,7 +147,7 @@ static inline void audit_syscall_entry(int major, unsigned long a0, unsigned long a3) { if (unlikely(current->audit_context)) - __audit_syscall_entry(syscall_get_arch(), major, a0, a1, a2, a3); + __audit_syscall_entry(major, a0, a1, a2, a3); } static inline void audit_syscall_exit(void *pt_regs) { diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 9f03ac205e1f..4e17443fd1ef 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -1506,7 +1506,6 @@ void __audit_free(struct task_struct *tsk) /** * audit_syscall_entry - fill in an audit record at syscall entry - * @arch: architecture type * @major: major syscall type (function) * @a1: additional syscall register 1 * @a2: additional syscall register 2 @@ -1521,9 +1520,8 @@ void __audit_free(struct task_struct *tsk) * will only be written if another part of the kernel requests that it * be written). */ -void __audit_syscall_entry(int arch, int major, - unsigned long a1, unsigned long a2, - unsigned long a3, unsigned long a4) +void __audit_syscall_entry(int major, unsigned long a1, unsigned long a2, + unsigned long a3, unsigned long a4) { struct task_struct *tsk = current; struct audit_context *context = tsk->audit_context; -- cgit v1.2.3 From 23fed6218d7f6ce6e4cde698579f0f51845f0b25 Mon Sep 17 00:00:00 2001 From: AKASHI Takahiro Date: Fri, 4 Jul 2014 08:28:31 +0100 Subject: arm64: audit: Add audit hook in syscall_trace_enter/exit() This patch adds auditing functions on entry to or exit from every system call invocation. Acked-by: Richard Guy Briggs Acked-by Will Deacon Signed-off-by: AKASHI Takahiro Signed-off-by: Catalin Marinas --- arch/arm64/kernel/ptrace.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch') diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index 9fde010c945f..70526cfda056 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -19,6 +19,7 @@ * along with this program. If not, see . */ +#include #include #include #include @@ -39,6 +40,7 @@ #include #include #include +#include #include #include @@ -1113,11 +1115,16 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs) if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) trace_sys_enter(regs, regs->syscallno); + audit_syscall_entry(syscall_get_arch(), regs->syscallno, + regs->orig_x0, regs->regs[1], regs->regs[2], regs->regs[3]); + return regs->syscallno; } asmlinkage void syscall_trace_exit(struct pt_regs *regs) { + audit_syscall_exit(regs); + if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) trace_sys_exit(regs, regs_return_value(regs)); -- cgit v1.2.3 From 4913c59890b0774990cceb7b0539fee71301dabe Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Tue, 23 Sep 2014 16:25:34 -0400 Subject: audit: arm64: Remove the audit arch argument to audit_syscall_entry The arm64 tree added calls to audit_syscall_entry() and rightly included the syscall number. The interface has since been changed to not need the syscall number. As such, arm64 should no longer pass that value. Signed-off-by: Eric Paris --- arch/arm64/kernel/ptrace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index 70526cfda056..310842e3d477 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -1115,8 +1115,8 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs) if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) trace_sys_enter(regs, regs->syscallno); - audit_syscall_entry(syscall_get_arch(), regs->syscallno, - regs->orig_x0, regs->regs[1], regs->regs[2], regs->regs[3]); + audit_syscall_entry(regs->syscallno, regs->orig_x0, regs->regs[1], + regs->regs[2], regs->regs[3]); return regs->syscallno; } -- cgit v1.2.3 From 508423bebcda29eb0ba7c627f895387dad7cdcd6 Mon Sep 17 00:00:00 2001 From: Sjoerd Simons Date: Thu, 25 Sep 2014 18:20:18 +0900 Subject: ARM: exynos_defconfig: enable USB gadget support Enable USB gadget support without support for any specific gadgets to more easily catch cases where a devices dts doesn't specify the usb controllers dr_mode while it should. Signed-off-by: Sjoerd Simons Signed-off-by: Kukjin Kim --- arch/arm/configs/exynos_defconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig index b75fbac3894b..72058b8a6f4d 100644 --- a/arch/arm/configs/exynos_defconfig +++ b/arch/arm/configs/exynos_defconfig @@ -55,6 +55,7 @@ CONFIG_SMSC911X=y CONFIG_USB_USBNET=y CONFIG_USB_NET_SMSC75XX=y CONFIG_USB_NET_SMSC95XX=y +CONFIG_USB_GADGET=y CONFIG_INPUT_EVDEV=y CONFIG_KEYBOARD_GPIO=y CONFIG_KEYBOARD_CROS_EC=y -- cgit v1.2.3 From 29075feaf1f55e6b1aa4054b44bc141e8d5eab0b Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Fri, 26 Sep 2014 09:05:39 -0700 Subject: next: openrisc: Fix build openrisc:defconfig fails to build in next-20140926 with the following error. In file included from arch/openrisc/kernel/signal.c:31:0: ./arch/openrisc/include/asm/syscall.h: In function 'syscall_get_arch': ./arch/openrisc/include/asm/syscall.h:77:9: error: 'EM_OPENRISC' undeclared Fix by moving EM_OPENRISC to include/uapi/linux/elf-em.h. Fixes: ce5d112827e5 ("ARCH: AUDIT: implement syscall_get_arch for all arches") Cc: Eric Paris Cc: Stefan Kristiansson Cc: Geert Uytterhoeven Cc: Stephen Rothwell Signed-off-by: Guenter Roeck Signed-off-by: Eric Paris --- arch/openrisc/include/uapi/asm/elf.h | 3 +-- include/uapi/linux/elf-em.h | 1 + 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/openrisc/include/uapi/asm/elf.h b/arch/openrisc/include/uapi/asm/elf.h index f02ea5830420..88842760e66f 100644 --- a/arch/openrisc/include/uapi/asm/elf.h +++ b/arch/openrisc/include/uapi/asm/elf.h @@ -55,9 +55,8 @@ typedef elf_greg_t elf_gregset_t[ELF_NGREG]; /* A placeholder; OR32 does not have fp support yes, so no fp regs for now. */ typedef unsigned long elf_fpregset_t; -/* This should be moved to include/linux/elf.h */ +/* EM_OPENRISC is defined in linux/elf-em.h */ #define EM_OR32 0x8472 -#define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor */ /* * These are used to set parameters in the core dumps. diff --git a/include/uapi/linux/elf-em.h b/include/uapi/linux/elf-em.h index 01529bd96438..aa90bc98b6e2 100644 --- a/include/uapi/linux/elf-em.h +++ b/include/uapi/linux/elf-em.h @@ -32,6 +32,7 @@ #define EM_V850 87 /* NEC v850 */ #define EM_M32R 88 /* Renesas M32R */ #define EM_MN10300 89 /* Panasonic/MEI MN10300, AM33 */ +#define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor */ #define EM_BLACKFIN 106 /* ADI Blackfin Processor */ #define EM_TI_C6000 140 /* TI C6X DSPs */ #define EM_AARCH64 183 /* ARM 64 bit */ -- cgit v1.2.3 From 619f30188ff0d10fccc3cd952a79cb56ff62db54 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Thu, 4 Sep 2014 10:57:33 +0530 Subject: ARC: Allow SMP kernel to build/boot on UP-only infrastructure In light of recent SNAFU with SMP build, allow simple platform to build as SMP but run UP. * Remove the dependence on simulation SMP extension to enable quick build/test iterations of SMP kernel. * In absence of platform SMP registration, prevent the NULL smp feature name from borkign the system Signed-off-by: Vineet Gupta --- arch/arc/include/asm/smp.h | 10 +++++++++- arch/arc/kernel/setup.c | 13 +------------ arch/arc/kernel/smp.c | 2 +- arch/arc/plat-arcfpga/Kconfig | 2 +- arch/arc/plat-arcfpga/platform.c | 2 +- 5 files changed, 13 insertions(+), 16 deletions(-) (limited to 'arch') diff --git a/arch/arc/include/asm/smp.h b/arch/arc/include/asm/smp.h index 5d06eee43ea9..3845b9e94f69 100644 --- a/arch/arc/include/asm/smp.h +++ b/arch/arc/include/asm/smp.h @@ -59,7 +59,15 @@ struct plat_smp_ops { /* TBD: stop exporting it for direct population by platform */ extern struct plat_smp_ops plat_smp_ops; -#endif /* CONFIG_SMP */ +#else /* CONFIG_SMP */ + +static inline void smp_init_cpus(void) {} +static inline const char *arc_platform_smp_cpuinfo(void) +{ + return ""; +} + +#endif /* !CONFIG_SMP */ /* * ARC700 doesn't support atomic Read-Modify-Write ops. diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 119dddb752b2..da61f2205dc5 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -24,6 +24,7 @@ #include #include #include +#include #define FIX_PTR(x) __asm__ __volatile__(";" : "+r"(x)) @@ -306,10 +307,7 @@ void setup_processor(void) arc_chk_ccms(); printk(arc_extn_mumbojumbo(cpu_id, str, sizeof(str))); - -#ifdef CONFIG_SMP printk(arc_platform_smp_cpuinfo()); -#endif arc_chk_fpu(); } @@ -360,11 +358,7 @@ void __init setup_arch(char **cmdline_p) machine_desc->init_early(); setup_processor(); - -#ifdef CONFIG_SMP smp_init_cpus(); -#endif - setup_arch_memory(); /* copy flat DT out of .init and then unflatten it */ @@ -424,14 +418,9 @@ static int show_cpuinfo(struct seq_file *m, void *v) (loops_per_jiffy / (5000 / HZ)) % 100); seq_printf(m, arc_mmu_mumbojumbo(cpu_id, str, PAGE_SIZE)); - seq_printf(m, arc_cache_mumbojumbo(cpu_id, str, PAGE_SIZE)); - seq_printf(m, arc_extn_mumbojumbo(cpu_id, str, PAGE_SIZE)); - -#ifdef CONFIG_SMP seq_printf(m, arc_platform_smp_cpuinfo()); -#endif free_page((unsigned long)str); done: diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c index dcd317c47d09..d01df0c517a2 100644 --- a/arch/arc/kernel/smp.c +++ b/arch/arc/kernel/smp.c @@ -101,7 +101,7 @@ void __weak arc_platform_smp_wait_to_boot(int cpu) const char *arc_platform_smp_cpuinfo(void) { - return plat_smp_ops.info; + return plat_smp_ops.info ? : ""; } /* diff --git a/arch/arc/plat-arcfpga/Kconfig b/arch/arc/plat-arcfpga/Kconfig index b9f34cf55acf..4965f9f4ffdc 100644 --- a/arch/arc/plat-arcfpga/Kconfig +++ b/arch/arc/plat-arcfpga/Kconfig @@ -8,7 +8,7 @@ menuconfig ARC_PLAT_FPGA_LEGACY bool "\"Legacy\" ARC FPGA dev Boards" - select ISS_SMP_EXTN if SMP + select ARC_HAS_COH_CACHES if SMP help Support for ARC development boards, provided by Synopsys. These are based on FPGA or ISS. e.g. diff --git a/arch/arc/plat-arcfpga/platform.c b/arch/arc/plat-arcfpga/platform.c index 1038949a99a1..6abc341e276d 100644 --- a/arch/arc/plat-arcfpga/platform.c +++ b/arch/arc/plat-arcfpga/platform.c @@ -71,7 +71,7 @@ MACHINE_START(ML509, "ml509") .dt_compat = ml509_compat, .init_early = plat_fpga_early_init, .init_machine = plat_fpga_populate_dev, -#ifdef CONFIG_SMP +#ifdef CONFIG_ISS_SMP_EXTN .init_smp = iss_model_init_smp, #endif MACHINE_END -- cgit v1.2.3 From 161485e8273001e56b2f20755ad9b6217b601fb3 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Mon, 4 Aug 2014 18:16:00 +0200 Subject: efi: Implement mandatory locking for UEFI Runtime Services According to section 7.1 of the UEFI spec, Runtime Services are not fully reentrant, and there are particular combinations of calls that need to be serialized. Use a spinlock to serialize all Runtime Services with respect to all others, even if this is more than strictly needed. We've managed to get away without requiring a runtime services lock until now because most of the interactions with EFI involve EFI variables, and those operations are already serialised with __efivars->lock. Some of the assumptions underlying the decision whether locks are needed or not (e.g., SetVariable() against ResetSystem()) may not apply universally to all [new] architectures that implement UEFI. Rather than try to reason our way out of this, let's just implement at least what the spec requires in terms of locking. Signed-off-by: Ard Biesheuvel Signed-off-by: Matt Fleming --- arch/x86/include/asm/efi.h | 2 + drivers/firmware/efi/runtime-wrappers.c | 154 +++++++++++++++++++++++++++++--- 2 files changed, 146 insertions(+), 10 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index 044a2fd3c5fe..b39ee5f2c02d 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -86,6 +86,8 @@ extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size, #endif /* CONFIG_X86_32 */ +#define efi_in_nmi() in_nmi() + extern int add_efi_memmap; extern struct efi_scratch efi_scratch; extern void efi_set_executable(efi_memory_desc_t *md, bool executable); diff --git a/drivers/firmware/efi/runtime-wrappers.c b/drivers/firmware/efi/runtime-wrappers.c index 10daa4bbb258..9694cba665c4 100644 --- a/drivers/firmware/efi/runtime-wrappers.c +++ b/drivers/firmware/efi/runtime-wrappers.c @@ -14,10 +14,82 @@ * This file is released under the GPLv2. */ +#include #include -#include /* spinlock_t */ +#include +#include #include +/* + * According to section 7.1 of the UEFI spec, Runtime Services are not fully + * reentrant, and there are particular combinations of calls that need to be + * serialized. (source: UEFI Specification v2.4A) + * + * Table 31. Rules for Reentry Into Runtime Services + * +------------------------------------+-------------------------------+ + * | If previous call is busy in | Forbidden to call | + * +------------------------------------+-------------------------------+ + * | Any | SetVirtualAddressMap() | + * +------------------------------------+-------------------------------+ + * | ConvertPointer() | ConvertPointer() | + * +------------------------------------+-------------------------------+ + * | SetVariable() | ResetSystem() | + * | UpdateCapsule() | | + * | SetTime() | | + * | SetWakeupTime() | | + * | GetNextHighMonotonicCount() | | + * +------------------------------------+-------------------------------+ + * | GetVariable() | GetVariable() | + * | GetNextVariableName() | GetNextVariableName() | + * | SetVariable() | SetVariable() | + * | QueryVariableInfo() | QueryVariableInfo() | + * | UpdateCapsule() | UpdateCapsule() | + * | QueryCapsuleCapabilities() | QueryCapsuleCapabilities() | + * | GetNextHighMonotonicCount() | GetNextHighMonotonicCount() | + * +------------------------------------+-------------------------------+ + * | GetTime() | GetTime() | + * | SetTime() | SetTime() | + * | GetWakeupTime() | GetWakeupTime() | + * | SetWakeupTime() | SetWakeupTime() | + * +------------------------------------+-------------------------------+ + * + * Due to the fact that the EFI pstore may write to the variable store in + * interrupt context, we need to use a spinlock for at least the groups that + * contain SetVariable() and QueryVariableInfo(). That leaves little else, as + * none of the remaining functions are actually ever called at runtime. + * So let's just use a single spinlock to serialize all Runtime Services calls. + */ +static DEFINE_SPINLOCK(efi_runtime_lock); + +/* + * Some runtime services calls can be reentrant under NMI, even if the table + * above says they are not. (source: UEFI Specification v2.4A) + * + * Table 32. Functions that may be called after Machine Check, INIT and NMI + * +----------------------------+------------------------------------------+ + * | Function | Called after Machine Check, INIT and NMI | + * +----------------------------+------------------------------------------+ + * | GetTime() | Yes, even if previously busy. | + * | GetVariable() | Yes, even if previously busy | + * | GetNextVariableName() | Yes, even if previously busy | + * | QueryVariableInfo() | Yes, even if previously busy | + * | SetVariable() | Yes, even if previously busy | + * | UpdateCapsule() | Yes, even if previously busy | + * | QueryCapsuleCapabilities() | Yes, even if previously busy | + * | ResetSystem() | Yes, even if previously busy | + * +----------------------------+------------------------------------------+ + * + * In order to prevent deadlocks under NMI, the wrappers for these functions + * may only grab the efi_runtime_lock or rtc_lock spinlocks if !efi_in_nmi(). + * However, not all of the services listed are reachable through NMI code paths, + * so the the special handling as suggested by the UEFI spec is only implemented + * for QueryVariableInfo() and SetVariable(), as these can be reached in NMI + * context through efi_pstore_write(). + */ +#ifndef efi_in_nmi +#define efi_in_nmi() (0) +#endif + /* * As per commit ef68c8f87ed1 ("x86: Serialize EFI time accesses on rtc_lock"), * the EFI specification requires that callers of the time related runtime @@ -32,7 +104,9 @@ static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc) efi_status_t status; spin_lock_irqsave(&rtc_lock, flags); + spin_lock(&efi_runtime_lock); status = efi_call_virt(get_time, tm, tc); + spin_unlock(&efi_runtime_lock); spin_unlock_irqrestore(&rtc_lock, flags); return status; } @@ -43,7 +117,9 @@ static efi_status_t virt_efi_set_time(efi_time_t *tm) efi_status_t status; spin_lock_irqsave(&rtc_lock, flags); + spin_lock(&efi_runtime_lock); status = efi_call_virt(set_time, tm); + spin_unlock(&efi_runtime_lock); spin_unlock_irqrestore(&rtc_lock, flags); return status; } @@ -56,7 +132,9 @@ static efi_status_t virt_efi_get_wakeup_time(efi_bool_t *enabled, efi_status_t status; spin_lock_irqsave(&rtc_lock, flags); + spin_lock(&efi_runtime_lock); status = efi_call_virt(get_wakeup_time, enabled, pending, tm); + spin_unlock(&efi_runtime_lock); spin_unlock_irqrestore(&rtc_lock, flags); return status; } @@ -67,7 +145,9 @@ static efi_status_t virt_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm) efi_status_t status; spin_lock_irqsave(&rtc_lock, flags); + spin_lock(&efi_runtime_lock); status = efi_call_virt(set_wakeup_time, enabled, tm); + spin_unlock(&efi_runtime_lock); spin_unlock_irqrestore(&rtc_lock, flags); return status; } @@ -78,14 +158,27 @@ static efi_status_t virt_efi_get_variable(efi_char16_t *name, unsigned long *data_size, void *data) { - return efi_call_virt(get_variable, name, vendor, attr, data_size, data); + unsigned long flags; + efi_status_t status; + + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(get_variable, name, vendor, attr, data_size, + data); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } static efi_status_t virt_efi_get_next_variable(unsigned long *name_size, efi_char16_t *name, efi_guid_t *vendor) { - return efi_call_virt(get_next_variable, name_size, name, vendor); + unsigned long flags; + efi_status_t status; + + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(get_next_variable, name_size, name, vendor); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } static efi_status_t virt_efi_set_variable(efi_char16_t *name, @@ -94,7 +187,17 @@ static efi_status_t virt_efi_set_variable(efi_char16_t *name, unsigned long data_size, void *data) { - return efi_call_virt(set_variable, name, vendor, attr, data_size, data); + unsigned long flags; + efi_status_t status; + bool __in_nmi = efi_in_nmi(); + + if (!__in_nmi) + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(set_variable, name, vendor, attr, data_size, + data); + if (!__in_nmi) + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } static efi_status_t virt_efi_query_variable_info(u32 attr, @@ -102,16 +205,31 @@ static efi_status_t virt_efi_query_variable_info(u32 attr, u64 *remaining_space, u64 *max_variable_size) { + unsigned long flags; + efi_status_t status; + bool __in_nmi = efi_in_nmi(); + if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION) return EFI_UNSUPPORTED; - return efi_call_virt(query_variable_info, attr, storage_space, - remaining_space, max_variable_size); + if (!__in_nmi) + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(query_variable_info, attr, storage_space, + remaining_space, max_variable_size); + if (!__in_nmi) + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } static efi_status_t virt_efi_get_next_high_mono_count(u32 *count) { - return efi_call_virt(get_next_high_mono_count, count); + unsigned long flags; + efi_status_t status; + + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(get_next_high_mono_count, count); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } static void virt_efi_reset_system(int reset_type, @@ -119,17 +237,27 @@ static void virt_efi_reset_system(int reset_type, unsigned long data_size, efi_char16_t *data) { + unsigned long flags; + + spin_lock_irqsave(&efi_runtime_lock, flags); __efi_call_virt(reset_system, reset_type, status, data_size, data); + spin_unlock_irqrestore(&efi_runtime_lock, flags); } static efi_status_t virt_efi_update_capsule(efi_capsule_header_t **capsules, unsigned long count, unsigned long sg_list) { + unsigned long flags; + efi_status_t status; + if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION) return EFI_UNSUPPORTED; - return efi_call_virt(update_capsule, capsules, count, sg_list); + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(update_capsule, capsules, count, sg_list); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules, @@ -137,11 +265,17 @@ static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules, u64 *max_size, int *reset_type) { + unsigned long flags; + efi_status_t status; + if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION) return EFI_UNSUPPORTED; - return efi_call_virt(query_capsule_caps, capsules, count, max_size, - reset_type); + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(query_capsule_caps, capsules, count, max_size, + reset_type); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } void efi_native_runtime_setup(void) -- cgit v1.2.3 From 5a17dae422d7de4b776a9753cd4673a343a25b4b Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Tue, 5 Aug 2014 11:52:11 +0100 Subject: efi: Add efi= parameter parsing to the EFI boot stub We need a way to customize the behaviour of the EFI boot stub, in particular, we need a way to disable the "chunking" workaround, used when reading files from the EFI System Partition. One of my machines doesn't cope well when reading files in 1MB chunks to a buffer above the 4GB mark - it appears that the "chunking" bug workaround triggers another firmware bug. This was only discovered with commit 4bf7111f5016 ("x86/efi: Support initrd loaded above 4G"), and that commit is perfectly valid. The symptom I observed was a corrupt initrd rather than any kind of crash. efi= is now used to specify EFI parameters in two very different execution environments, the EFI boot stub and during kernel boot. There is also a slight performance optimization by enabling efi=nochunk, but that's offset by the fact that you're more likely to run into firmware issues, at least on x86. This is the rationale behind leaving the workaround enabled by default. Also provide some documentation for EFI_READ_CHUNK_SIZE and why we're using the current value of 1MB. Tested-by: Ard Biesheuvel Cc: Roy Franz Cc: Maarten Lankhorst Cc: Leif Lindholm Cc: Borislav Petkov Signed-off-by: Matt Fleming --- Documentation/kernel-parameters.txt | 5 ++- arch/x86/boot/compressed/eboot.c | 4 ++ arch/x86/platform/efi/efi.c | 19 +++++++- drivers/firmware/efi/libstub/arm-stub.c | 4 ++ drivers/firmware/efi/libstub/efi-stub-helper.c | 62 +++++++++++++++++++++++++- include/linux/efi.h | 2 + 6 files changed, 91 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 5ae8608ca9f5..67d79597d9d6 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -992,10 +992,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted. Format: {"off" | "on" | "skip[mbr]"} efi= [EFI] - Format: { "old_map" } + Format: { "old_map", "nochunk" } old_map [X86-64]: switch to the old ioremap-based EFI runtime services mapping. 32-bit still uses this one by default. + nochunk: disable reading files in "chunks" in the EFI + boot stub, as chunking can cause problems with some + firmware implementations. efi_no_storage_paranoia [EFI; X86] Using this parameter you can use more than 50% of diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index f277184e2ac1..f4bdab1dbf66 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -1100,6 +1100,10 @@ struct boot_params *make_boot_params(struct efi_config *c) else initrd_addr_max = hdr->initrd_addr_max; + status = efi_parse_options(cmdline_ptr); + if (status != EFI_SUCCESS) + goto fail2; + status = handle_cmdline_files(sys_table, image, (char *)(unsigned long)hdr->cmd_line_ptr, "initrd=", initrd_addr_max, diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 850da94fef30..a1f745b0bf1d 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -943,8 +943,23 @@ static int __init parse_efi_cmdline(char *str) if (*str == '=') str++; - if (!strncmp(str, "old_map", 7)) - set_bit(EFI_OLD_MEMMAP, &efi.flags); + while (*str) { + if (!strncmp(str, "old_map", 7)) { + set_bit(EFI_OLD_MEMMAP, &efi.flags); + str += strlen("old_map"); + } + + /* + * Skip any options we don't understand. Presumably + * they apply to the EFI boot stub. + */ + while (*str && *str != ',') + str++; + + /* If we hit a delimiter, skip it */ + if (*str == ',') + str++; + } return 0; } diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c index 480339b6b110..75ee05964cbc 100644 --- a/drivers/firmware/efi/libstub/arm-stub.c +++ b/drivers/firmware/efi/libstub/arm-stub.c @@ -226,6 +226,10 @@ unsigned long __init efi_entry(void *handle, efi_system_table_t *sys_table, goto fail_free_image; } + status = efi_parse_options(cmdline_ptr); + if (status != EFI_SUCCESS) + pr_efi_err(sys_table, "Failed to parse EFI cmdline options\n"); + /* * Unauthenticated device tree data is a security hazard, so * ignore 'dtb=' unless UEFI Secure Boot is disabled. diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c index 32d5cca30f49..a920fec8fe88 100644 --- a/drivers/firmware/efi/libstub/efi-stub-helper.c +++ b/drivers/firmware/efi/libstub/efi-stub-helper.c @@ -15,8 +15,23 @@ #include "efistub.h" +/* + * Some firmware implementations have problems reading files in one go. + * A read chunk size of 1MB seems to work for most platforms. + * + * Unfortunately, reading files in chunks triggers *other* bugs on some + * platforms, so we provide a way to disable this workaround, which can + * be done by passing "efi=nochunk" on the EFI boot stub command line. + * + * If you experience issues with initrd images being corrupt it's worth + * trying efi=nochunk, but chunking is enabled by default because there + * are far more machines that require the workaround than those that + * break with it enabled. + */ #define EFI_READ_CHUNK_SIZE (1024 * 1024) +static unsigned long __chunk_size = EFI_READ_CHUNK_SIZE; + struct file_info { efi_file_handle_t *handle; u64 size; @@ -281,6 +296,49 @@ void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, efi_call_early(free_pages, addr, nr_pages); } +/* + * Parse the ASCII string 'cmdline' for EFI options, denoted by the efi= + * option, e.g. efi=nochunk. + * + * It should be noted that efi= is parsed in two very different + * environments, first in the early boot environment of the EFI boot + * stub, and subsequently during the kernel boot. + */ +efi_status_t efi_parse_options(char *cmdline) +{ + char *str; + + /* + * If no EFI parameters were specified on the cmdline we've got + * nothing to do. + */ + str = strstr(cmdline, "efi="); + if (!str) + return EFI_SUCCESS; + + /* Skip ahead to first argument */ + str += strlen("efi="); + + /* + * Remember, because efi= is also used by the kernel we need to + * skip over arguments we don't understand. + */ + while (*str) { + if (!strncmp(str, "nochunk", 7)) { + str += strlen("nochunk"); + __chunk_size = -1UL; + } + + /* Group words together, delimited by "," */ + while (*str && *str != ',') + str++; + + if (*str == ',') + str++; + } + + return EFI_SUCCESS; +} /* * Check the cmdline for a LILO-style file= arguments. @@ -423,8 +481,8 @@ efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, size = files[j].size; while (size) { unsigned long chunksize; - if (size > EFI_READ_CHUNK_SIZE) - chunksize = EFI_READ_CHUNK_SIZE; + if (size > __chunk_size) + chunksize = __chunk_size; else chunksize = size; diff --git a/include/linux/efi.h b/include/linux/efi.h index 45cb4ffdea62..518779fb5e90 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1227,4 +1227,6 @@ efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, unsigned long *load_addr, unsigned long *load_size); +efi_status_t efi_parse_options(char *cmdline); + #endif /* _LINUX_EFI_H */ -- cgit v1.2.3 From 1282278ee00b41f314d1bce058a6b28b1bd49c21 Mon Sep 17 00:00:00 2001 From: Josh Triplett Date: Wed, 30 Jul 2014 12:23:32 -0700 Subject: efi-bgrt: Add error handling; inform the user when ignoring the BGRT Gracefully handle failures to allocate memory for the image, which might be arbitrarily large. efi_bgrt_init can fail in various ways as well, usually because the BIOS-provided BGRT structure does not match expectations. Add appropriate error messages rather than failing silently. Reported-by: Srihari Vijayaraghavan Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=81321 Signed-off-by: Josh Triplett Signed-off-by: Matt Fleming --- arch/x86/platform/efi/efi-bgrt.c | 36 ++++++++++++++++++++++++++++++------ 1 file changed, 30 insertions(+), 6 deletions(-) (limited to 'arch') diff --git a/arch/x86/platform/efi/efi-bgrt.c b/arch/x86/platform/efi/efi-bgrt.c index f15103dff4b4..d143d216d52b 100644 --- a/arch/x86/platform/efi/efi-bgrt.c +++ b/arch/x86/platform/efi/efi-bgrt.c @@ -40,20 +40,40 @@ void __init efi_bgrt_init(void) if (ACPI_FAILURE(status)) return; - if (bgrt_tab->header.length < sizeof(*bgrt_tab)) + if (bgrt_tab->header.length < sizeof(*bgrt_tab)) { + pr_err("Ignoring BGRT: invalid length %u (expected %zu)\n", + bgrt_tab->header.length, sizeof(*bgrt_tab)); return; - if (bgrt_tab->version != 1 || bgrt_tab->status != 1) + } + if (bgrt_tab->version != 1) { + pr_err("Ignoring BGRT: invalid version %u (expected 1)\n", + bgrt_tab->version); + return; + } + if (bgrt_tab->status != 1) { + pr_err("Ignoring BGRT: invalid status %u (expected 1)\n", + bgrt_tab->status); + return; + } + if (bgrt_tab->image_type != 0) { + pr_err("Ignoring BGRT: invalid image type %u (expected 0)\n", + bgrt_tab->image_type); return; - if (bgrt_tab->image_type != 0 || !bgrt_tab->image_address) + } + if (!bgrt_tab->image_address) { + pr_err("Ignoring BGRT: null image address\n"); return; + } image = efi_lookup_mapped_addr(bgrt_tab->image_address); if (!image) { image = early_memremap(bgrt_tab->image_address, sizeof(bmp_header)); ioremapped = true; - if (!image) + if (!image) { + pr_err("Ignoring BGRT: failed to map image header memory\n"); return; + } } memcpy_fromio(&bmp_header, image, sizeof(bmp_header)); @@ -61,14 +81,18 @@ void __init efi_bgrt_init(void) early_iounmap(image, sizeof(bmp_header)); bgrt_image_size = bmp_header.size; - bgrt_image = kmalloc(bgrt_image_size, GFP_KERNEL); - if (!bgrt_image) + bgrt_image = kmalloc(bgrt_image_size, GFP_KERNEL | __GFP_NOWARN); + if (!bgrt_image) { + pr_err("Ignoring BGRT: failed to allocate memory for image (wanted %zu bytes)\n", + bgrt_image_size); return; + } if (ioremapped) { image = early_memremap(bgrt_tab->image_address, bmp_header.size); if (!image) { + pr_err("Ignoring BGRT: failed to map image memory\n"); kfree(bgrt_image); bgrt_image = NULL; return; -- cgit v1.2.3 From b2e0a54a1296a91b800f316df7bef7d1905e4fd0 Mon Sep 17 00:00:00 2001 From: Dave Young Date: Thu, 14 Aug 2014 17:15:26 +0800 Subject: efi: Move noefi early param code out of x86 arch code noefi param can be used for arches other than X86 later, thus move it out of x86 platform code. Signed-off-by: Dave Young Signed-off-by: Matt Fleming --- Documentation/kernel-parameters.txt | 2 +- arch/x86/platform/efi/efi.c | 10 +--------- drivers/firmware/efi/efi.c | 13 +++++++++++++ include/linux/efi.h | 1 + 4 files changed, 16 insertions(+), 10 deletions(-) (limited to 'arch') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 67d79597d9d6..08df275eee2b 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -2169,7 +2169,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. nodsp [SH] Disable hardware DSP at boot time. - noefi [X86] Disable EFI runtime services support. + noefi Disable EFI runtime services support. noexec [IA-64] diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index a1f745b0bf1d..c90d3cd2728c 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -70,14 +70,6 @@ static efi_config_table_type_t arch_tables[] __initdata = { u64 efi_setup; /* efi setup_data physical address */ -static bool disable_runtime __initdata = false; -static int __init setup_noefi(char *arg) -{ - disable_runtime = true; - return 0; -} -early_param("noefi", setup_noefi); - int add_efi_memmap; EXPORT_SYMBOL(add_efi_memmap); @@ -492,7 +484,7 @@ void __init efi_init(void) if (!efi_runtime_supported()) pr_info("No EFI runtime due to 32/64-bit mismatch with kernel\n"); else { - if (disable_runtime || efi_runtime_init()) + if (efi_runtime_disabled() || efi_runtime_init()) return; } if (efi_memmap_init()) diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index 64ecbb501c50..c8f01a73edb5 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -41,6 +41,19 @@ struct efi __read_mostly efi = { }; EXPORT_SYMBOL(efi); +static bool disable_runtime; +static int __init setup_noefi(char *arg) +{ + disable_runtime = true; + return 0; +} +early_param("noefi", setup_noefi); + +bool efi_runtime_disabled(void) +{ + return disable_runtime; +} + static struct kobject *efi_kobj; static struct kobject *efivars_kobj; diff --git a/include/linux/efi.h b/include/linux/efi.h index 518779fb5e90..4812ed0b0374 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1229,4 +1229,5 @@ efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, efi_status_t efi_parse_options(char *cmdline); +bool efi_runtime_disabled(void); #endif /* _LINUX_EFI_H */ -- cgit v1.2.3 From 6ccc72b87b83ece31c2a75bbe07f440b0378f7a9 Mon Sep 17 00:00:00 2001 From: Dave Young Date: Thu, 14 Aug 2014 17:15:27 +0800 Subject: lib: Add a generic cmdline parse function parse_option_str There should be a generic function to parse params like a=b,c Adding parse_option_str in lib/cmdline.c which will return true if there's specified option set in the params. Also updated efi=old_map parsing code to use the new function Signed-off-by: Dave Young Signed-off-by: Matt Fleming --- arch/x86/platform/efi/efi.c | 22 ++-------------------- include/linux/kernel.h | 1 + lib/cmdline.c | 29 +++++++++++++++++++++++++++++ 3 files changed, 32 insertions(+), 20 deletions(-) (limited to 'arch') diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index c90d3cd2728c..c73a7df5d37f 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -932,26 +932,8 @@ u64 efi_mem_attributes(unsigned long phys_addr) static int __init parse_efi_cmdline(char *str) { - if (*str == '=') - str++; - - while (*str) { - if (!strncmp(str, "old_map", 7)) { - set_bit(EFI_OLD_MEMMAP, &efi.flags); - str += strlen("old_map"); - } - - /* - * Skip any options we don't understand. Presumably - * they apply to the EFI boot stub. - */ - while (*str && *str != ',') - str++; - - /* If we hit a delimiter, skip it */ - if (*str == ',') - str++; - } + if (parse_option_str(str, "old_map")) + set_bit(EFI_OLD_MEMMAP, &efi.flags); return 0; } diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 95624bed87ef..f66427ef0628 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -407,6 +407,7 @@ int vsscanf(const char *, const char *, va_list); extern int get_option(char **str, int *pint); extern char *get_options(const char *str, int nints, int *ints); extern unsigned long long memparse(const char *ptr, char **retptr); +extern bool parse_option_str(const char *str, const char *option); extern int core_kernel_text(unsigned long addr); extern int core_kernel_data(unsigned long addr); diff --git a/lib/cmdline.c b/lib/cmdline.c index 76a712e6e20e..8f13cf73c2ec 100644 --- a/lib/cmdline.c +++ b/lib/cmdline.c @@ -160,3 +160,32 @@ unsigned long long memparse(const char *ptr, char **retptr) return ret; } EXPORT_SYMBOL(memparse); + +/** + * parse_option_str - Parse a string and check an option is set or not + * @str: String to be parsed + * @option: option name + * + * This function parses a string containing a comma-separated list of + * strings like a=b,c. + * + * Return true if there's such option in the string, or return false. + */ +bool parse_option_str(const char *str, const char *option) +{ + while (*str) { + if (!strncmp(str, option, strlen(option))) { + str += strlen(option); + if (!*str || *str == ',') + return true; + } + + while (*str && *str != ',') + str++; + + if (*str == ',') + str++; + } + + return false; +} -- cgit v1.2.3 From 5ae3683c380e78aebc60d710617ba2c0dccc9e84 Mon Sep 17 00:00:00 2001 From: Dave Young Date: Thu, 14 Aug 2014 17:15:28 +0800 Subject: efi: Add kernel param efi=noruntime noefi kernel param means actually disabling efi runtime, Per suggestion from Leif Lindholm efi=noruntime should be better. But since noefi is already used in X86 thus just adding another param efi=noruntime for same purpose. Signed-off-by: Dave Young Signed-off-by: Matt Fleming --- Documentation/kernel-parameters.txt | 3 ++- arch/x86/platform/efi/efi.c | 4 ++-- drivers/firmware/efi/efi.c | 9 +++++++++ 3 files changed, 13 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 08df275eee2b..d0e431611a04 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -992,13 +992,14 @@ bytes respectively. Such letter suffixes can also be entirely omitted. Format: {"off" | "on" | "skip[mbr]"} efi= [EFI] - Format: { "old_map", "nochunk" } + Format: { "old_map", "nochunk", "noruntime" } old_map [X86-64]: switch to the old ioremap-based EFI runtime services mapping. 32-bit still uses this one by default. nochunk: disable reading files in "chunks" in the EFI boot stub, as chunking can cause problems with some firmware implementations. + noruntime : disable EFI runtime services support efi_no_storage_paranoia [EFI; X86] Using this parameter you can use more than 50% of diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index c73a7df5d37f..00f4cc566adb 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -930,11 +930,11 @@ u64 efi_mem_attributes(unsigned long phys_addr) return 0; } -static int __init parse_efi_cmdline(char *str) +static int __init arch_parse_efi_cmdline(char *str) { if (parse_option_str(str, "old_map")) set_bit(EFI_OLD_MEMMAP, &efi.flags); return 0; } -early_param("efi", parse_efi_cmdline); +early_param("efi", arch_parse_efi_cmdline); diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index c8f01a73edb5..cebfa36a27ae 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -54,6 +54,15 @@ bool efi_runtime_disabled(void) return disable_runtime; } +static int __init parse_efi_cmdline(char *str) +{ + if (parse_option_str(str, "noruntime")) + disable_runtime = true; + + return 0; +} +early_param("efi", parse_efi_cmdline); + static struct kobject *efi_kobj; static struct kobject *efivars_kobj; -- cgit v1.2.3 From 88f8abd594082b9c08789e8527e4e38116a963ec Mon Sep 17 00:00:00 2001 From: Dave Young Date: Thu, 14 Aug 2014 17:15:29 +0800 Subject: arm64/efi: uefi_init error handling fix There's one early memmap leak in uefi_init error path, fix it and slightly tune the error handling code. Signed-off-by: Dave Young Acked-by: Mark Salter Reported-by: Will Deacon Acked-by: Will Deacon Signed-off-by: Matt Fleming --- arch/arm64/kernel/efi.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index e72f3100958f..6ed0362dd579 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -89,7 +89,8 @@ static int __init uefi_init(void) */ if (efi.systab->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) { pr_err("System table signature incorrect\n"); - return -EINVAL; + retval = -EINVAL; + goto out; } if ((efi.systab->hdr.revision >> 16) < 2) pr_warn("Warning: EFI system table version %d.%02d, expected 2.00 or greater\n", @@ -103,6 +104,7 @@ static int __init uefi_init(void) for (i = 0; i < (int) sizeof(vendor) - 1 && *c16; ++i) vendor[i] = c16[i]; vendor[i] = '\0'; + early_memunmap(c16, sizeof(vendor)); } pr_info("EFI v%u.%.02u by %s\n", @@ -113,9 +115,8 @@ static int __init uefi_init(void) if (retval == 0) set_bit(EFI_CONFIG_TABLES, &efi.flags); - early_memunmap(c16, sizeof(vendor)); +out: early_memunmap(efi.systab, sizeof(efi_system_table_t)); - return retval; } -- cgit v1.2.3 From 6632210f50530ea53dd21f786f2854609d928689 Mon Sep 17 00:00:00 2001 From: Dave Young Date: Mon, 18 Aug 2014 09:30:07 +0800 Subject: arm64/efi: Do not enter virtual mode if booting with efi=noruntime or noefi In case efi runtime disabled via noefi kernel cmdline arm64_enter_virtual_mode should error out. At the same time move early_memunmap(memmap.map, mapsize) to the beginning of the function or it will leak early mem. Signed-off-by: Dave Young Reviewed-by: Will Deacon Signed-off-by: Matt Fleming --- arch/arm64/kernel/efi.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index 6ed0362dd579..8f5db4a3c9d9 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -392,11 +392,16 @@ static int __init arm64_enter_virtual_mode(void) return -1; } - pr_info("Remapping and enabling EFI services.\n"); - - /* replace early memmap mapping with permanent mapping */ mapsize = memmap.map_end - memmap.map; early_memunmap(memmap.map, mapsize); + + if (efi_runtime_disabled()) { + pr_info("EFI runtime services will be disabled.\n"); + return -1; + } + + pr_info("Remapping and enabling EFI services.\n"); + /* replace early memmap mapping with permanent mapping */ memmap.map = (__force void *)ioremap_cache((phys_addr_t)memmap.phys_map, mapsize); memmap.map_end = memmap.map + mapsize; -- cgit v1.2.3 From a5a750a98fe2812263546cc20badd32bab21ec52 Mon Sep 17 00:00:00 2001 From: Dave Young Date: Thu, 14 Aug 2014 17:15:31 +0800 Subject: x86/efi: Clear EFI_RUNTIME_SERVICES if failing to enter virtual mode If enter virtual mode failed due to some reason other than the efi call the EFI_RUNTIME_SERVICES bit in efi.flags should be cleared thus users of efi runtime services can check the bit and handle the case instead of assume efi runtime is ok. Per Matt, if efi call SetVirtualAddressMap fails we will be not sure it's safe to make any assumptions about the state of the system. So kernel panics instead of clears EFI_RUNTIME_SERVICES bit. Signed-off-by: Dave Young Signed-off-by: Matt Fleming --- arch/x86/platform/efi/efi.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 00f4cc566adb..d3096c0aa941 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -724,6 +724,7 @@ static void __init kexec_enter_virtual_mode(void) */ if (!efi_is_native()) { efi_unmap_memmap(); + clear_bit(EFI_RUNTIME_SERVICES, &efi.flags); return; } @@ -797,6 +798,7 @@ static void __init __efi_enter_virtual_mode(void) new_memmap = efi_map_regions(&count, &pg_shift); if (!new_memmap) { pr_err("Error reallocating memory, EFI runtime non-functional!\n"); + clear_bit(EFI_RUNTIME_SERVICES, &efi.flags); return; } @@ -804,8 +806,10 @@ static void __init __efi_enter_virtual_mode(void) BUG_ON(!efi.systab); - if (efi_setup_page_tables(__pa(new_memmap), 1 << pg_shift)) + if (efi_setup_page_tables(__pa(new_memmap), 1 << pg_shift)) { + clear_bit(EFI_RUNTIME_SERVICES, &efi.flags); return; + } efi_sync_low_kernel_mappings(); efi_dump_pagetable(); -- cgit v1.2.3 From ace1d1218da536f3138e6e702788bd5d62ba7eca Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Wed, 3 Sep 2014 13:32:21 +0200 Subject: x86: efi: Format EFI memory type & attrs with efi_md_typeattr_format() An example log excerpt demonstrating the change: Before the patch: > efi: mem00: type=7, attr=0xf, range=[0x0000000000000000-0x000000000009f000) (0MB) > efi: mem01: type=2, attr=0xf, range=[0x000000000009f000-0x00000000000a0000) (0MB) > efi: mem02: type=7, attr=0xf, range=[0x0000000000100000-0x0000000000400000) (3MB) > efi: mem03: type=2, attr=0xf, range=[0x0000000000400000-0x0000000000800000) (4MB) > efi: mem04: type=10, attr=0xf, range=[0x0000000000800000-0x0000000000808000) (0MB) > efi: mem05: type=7, attr=0xf, range=[0x0000000000808000-0x0000000000810000) (0MB) > efi: mem06: type=10, attr=0xf, range=[0x0000000000810000-0x0000000000900000) (0MB) > efi: mem07: type=4, attr=0xf, range=[0x0000000000900000-0x0000000001100000) (8MB) > efi: mem08: type=7, attr=0xf, range=[0x0000000001100000-0x0000000001400000) (3MB) > efi: mem09: type=2, attr=0xf, range=[0x0000000001400000-0x0000000002613000) (18MB) > efi: mem10: type=7, attr=0xf, range=[0x0000000002613000-0x0000000004000000) (25MB) > efi: mem11: type=4, attr=0xf, range=[0x0000000004000000-0x0000000004020000) (0MB) > efi: mem12: type=7, attr=0xf, range=[0x0000000004020000-0x00000000068ea000) (40MB) > efi: mem13: type=2, attr=0xf, range=[0x00000000068ea000-0x00000000068f0000) (0MB) > efi: mem14: type=3, attr=0xf, range=[0x00000000068f0000-0x0000000006c7b000) (3MB) > efi: mem15: type=6, attr=0x800000000000000f, range=[0x0000000006c7b000-0x0000000006c7d000) (0MB) > efi: mem16: type=5, attr=0x800000000000000f, range=[0x0000000006c7d000-0x0000000006c85000) (0MB) > efi: mem17: type=6, attr=0x800000000000000f, range=[0x0000000006c85000-0x0000000006c87000) (0MB) > efi: mem18: type=3, attr=0xf, range=[0x0000000006c87000-0x0000000006ca3000) (0MB) > efi: mem19: type=6, attr=0x800000000000000f, range=[0x0000000006ca3000-0x0000000006ca6000) (0MB) > efi: mem20: type=10, attr=0xf, range=[0x0000000006ca6000-0x0000000006cc6000) (0MB) > efi: mem21: type=6, attr=0x800000000000000f, range=[0x0000000006cc6000-0x0000000006d95000) (0MB) > efi: mem22: type=5, attr=0x800000000000000f, range=[0x0000000006d95000-0x0000000006e22000) (0MB) > efi: mem23: type=7, attr=0xf, range=[0x0000000006e22000-0x0000000007165000) (3MB) > efi: mem24: type=4, attr=0xf, range=[0x0000000007165000-0x0000000007d22000) (11MB) > efi: mem25: type=7, attr=0xf, range=[0x0000000007d22000-0x0000000007d25000) (0MB) > efi: mem26: type=3, attr=0xf, range=[0x0000000007d25000-0x0000000007ea2000) (1MB) > efi: mem27: type=5, attr=0x800000000000000f, range=[0x0000000007ea2000-0x0000000007ed2000) (0MB) > efi: mem28: type=6, attr=0x800000000000000f, range=[0x0000000007ed2000-0x0000000007ef6000) (0MB) > efi: mem29: type=7, attr=0xf, range=[0x0000000007ef6000-0x0000000007f00000) (0MB) > efi: mem30: type=9, attr=0xf, range=[0x0000000007f00000-0x0000000007f02000) (0MB) > efi: mem31: type=10, attr=0xf, range=[0x0000000007f02000-0x0000000007f06000) (0MB) > efi: mem32: type=4, attr=0xf, range=[0x0000000007f06000-0x0000000007fd0000) (0MB) > efi: mem33: type=6, attr=0x800000000000000f, range=[0x0000000007fd0000-0x0000000007ff0000) (0MB) > efi: mem34: type=7, attr=0xf, range=[0x0000000007ff0000-0x0000000008000000) (0MB) After the patch: > efi: mem00: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000000000000-0x000000000009f000) (0MB) > efi: mem01: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x000000000009f000-0x00000000000a0000) (0MB) > efi: mem02: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000000100000-0x0000000000400000) (3MB) > efi: mem03: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x0000000000400000-0x0000000000800000) (4MB) > efi: mem04: [ACPI Memory NVS | | | | | |WB|WT|WC|UC] range=[0x0000000000800000-0x0000000000808000) (0MB) > efi: mem05: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000000808000-0x0000000000810000) (0MB) > efi: mem06: [ACPI Memory NVS | | | | | |WB|WT|WC|UC] range=[0x0000000000810000-0x0000000000900000) (0MB) > efi: mem07: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x0000000000900000-0x0000000001100000) (8MB) > efi: mem08: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000001100000-0x0000000001400000) (3MB) > efi: mem09: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x0000000001400000-0x0000000002613000) (18MB) > efi: mem10: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000002613000-0x0000000004000000) (25MB) > efi: mem11: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x0000000004000000-0x0000000004020000) (0MB) > efi: mem12: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000004020000-0x00000000068ea000) (40MB) > efi: mem13: [Loader Data | | | | | |WB|WT|WC|UC] range=[0x00000000068ea000-0x00000000068f0000) (0MB) > efi: mem14: [Boot Code | | | | | |WB|WT|WC|UC] range=[0x00000000068f0000-0x0000000006c7b000) (3MB) > efi: mem15: [Runtime Data |RUN| | | | |WB|WT|WC|UC] range=[0x0000000006c7b000-0x0000000006c7d000) (0MB) > efi: mem16: [Runtime Code |RUN| | | | |WB|WT|WC|UC] range=[0x0000000006c7d000-0x0000000006c85000) (0MB) > efi: mem17: [Runtime Data |RUN| | | | |WB|WT|WC|UC] range=[0x0000000006c85000-0x0000000006c87000) (0MB) > efi: mem18: [Boot Code | | | | | |WB|WT|WC|UC] range=[0x0000000006c87000-0x0000000006ca3000) (0MB) > efi: mem19: [Runtime Data |RUN| | | | |WB|WT|WC|UC] range=[0x0000000006ca3000-0x0000000006ca6000) (0MB) > efi: mem20: [ACPI Memory NVS | | | | | |WB|WT|WC|UC] range=[0x0000000006ca6000-0x0000000006cc6000) (0MB) > efi: mem21: [Runtime Data |RUN| | | | |WB|WT|WC|UC] range=[0x0000000006cc6000-0x0000000006d95000) (0MB) > efi: mem22: [Runtime Code |RUN| | | | |WB|WT|WC|UC] range=[0x0000000006d95000-0x0000000006e22000) (0MB) > efi: mem23: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000006e22000-0x0000000007165000) (3MB) > efi: mem24: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x0000000007165000-0x0000000007d22000) (11MB) > efi: mem25: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000007d22000-0x0000000007d25000) (0MB) > efi: mem26: [Boot Code | | | | | |WB|WT|WC|UC] range=[0x0000000007d25000-0x0000000007ea2000) (1MB) > efi: mem27: [Runtime Code |RUN| | | | |WB|WT|WC|UC] range=[0x0000000007ea2000-0x0000000007ed2000) (0MB) > efi: mem28: [Runtime Data |RUN| | | | |WB|WT|WC|UC] range=[0x0000000007ed2000-0x0000000007ef6000) (0MB) > efi: mem29: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000007ef6000-0x0000000007f00000) (0MB) > efi: mem30: [ACPI Reclaim Memory| | | | | |WB|WT|WC|UC] range=[0x0000000007f00000-0x0000000007f02000) (0MB) > efi: mem31: [ACPI Memory NVS | | | | | |WB|WT|WC|UC] range=[0x0000000007f02000-0x0000000007f06000) (0MB) > efi: mem32: [Boot Data | | | | | |WB|WT|WC|UC] range=[0x0000000007f06000-0x0000000007fd0000) (0MB) > efi: mem33: [Runtime Data |RUN| | | | |WB|WT|WC|UC] range=[0x0000000007fd0000-0x0000000007ff0000) (0MB) > efi: mem34: [Conventional Memory| | | | | |WB|WT|WC|UC] range=[0x0000000007ff0000-0x0000000008000000) (0MB) Both the type enum and the attribute bitmap are decoded, with the additional benefit that the memory ranges line up as well. Signed-off-by: Laszlo Ersek Acked-by: Ard Biesheuvel Signed-off-by: Matt Fleming --- arch/x86/platform/efi/efi.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index d3096c0aa941..f0be3d1da3de 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -202,9 +202,12 @@ static void __init print_efi_memmap(void) for (p = memmap.map, i = 0; p < memmap.map_end; p += memmap.desc_size, i++) { + char buf[64]; + md = p; - pr_info("mem%02u: type=%u, attr=0x%llx, range=[0x%016llx-0x%016llx) (%lluMB)\n", - i, md->type, md->attribute, md->phys_addr, + pr_info("mem%02u: %s range=[0x%016llx-0x%016llx) (%lluMB)\n", + i, efi_md_typeattr_format(buf, sizeof(buf), md), + md->phys_addr, md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT), (md->num_pages >> (20 - EFI_PAGE_SHIFT))); } -- cgit v1.2.3 From 77b12bcfc532b6bb9adc0f898c6b08216056eb89 Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Wed, 3 Sep 2014 13:32:22 +0200 Subject: ia64: efi: Format EFI memory type & attrs with efi_md_typeattr_format() The effects of the patch on the i64 memory map log are similar to those visible in the previous (x86) patch: the type enum and the attribute bitmap are decoded. Signed-off-by: Laszlo Ersek Acked-by: Ard Biesheuvel Signed-off-by: Matt Fleming --- arch/ia64/kernel/efi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c index 741b99c1a0b1..c52d7540dc05 100644 --- a/arch/ia64/kernel/efi.c +++ b/arch/ia64/kernel/efi.c @@ -568,6 +568,7 @@ efi_init (void) { const char *unit; unsigned long size; + char buf[64]; md = p; size = md->num_pages << EFI_PAGE_SHIFT; @@ -586,9 +587,10 @@ efi_init (void) unit = "KB"; } - printk("mem%02d: type=%2u, attr=0x%016lx, " + printk("mem%02d: %s " "range=[0x%016lx-0x%016lx) (%4lu%s)\n", - i, md->type, md->attribute, md->phys_addr, + i, efi_md_typeattr_format(buf, sizeof(buf), md), + md->phys_addr, md->phys_addr + efi_md_size(md), size, unit); } } -- cgit v1.2.3 From 65ba758f3e7d99c49b5710f6010bc6ba1e50d16c Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Wed, 3 Sep 2014 13:32:23 +0200 Subject: arm64: efi: Format EFI memory type & attrs with efi_md_typeattr_format() An example log excerpt demonstrating the change: Before the patch: > Processing EFI memory map: > 0x000040000000-0x000040000fff [Loader Data] > 0x000040001000-0x00004007ffff [Conventional Memory] > 0x000040080000-0x00004072afff [Loader Data] > 0x00004072b000-0x00005fdfffff [Conventional Memory] > 0x00005fe00000-0x00005fe0ffff [Loader Data] > 0x00005fe10000-0x0000964e8fff [Conventional Memory] > 0x0000964e9000-0x0000964e9fff [Loader Data] > 0x0000964ea000-0x000096c52fff [Loader Code] > 0x000096c53000-0x00009709dfff [Boot Code]* > 0x00009709e000-0x0000970b3fff [Runtime Code]* > 0x0000970b4000-0x0000970f4fff [Runtime Data]* > 0x0000970f5000-0x000097117fff [Runtime Code]* > 0x000097118000-0x000097199fff [Runtime Data]* > 0x00009719a000-0x0000971dffff [Runtime Code]* > 0x0000971e0000-0x0000997f8fff [Conventional Memory] > 0x0000997f9000-0x0000998f1fff [Boot Data]* > 0x0000998f2000-0x0000999eafff [Conventional Memory] > 0x0000999eb000-0x00009af09fff [Boot Data]* > 0x00009af0a000-0x00009af21fff [Conventional Memory] > 0x00009af22000-0x00009af46fff [Boot Data]* > 0x00009af47000-0x00009af5bfff [Conventional Memory] > 0x00009af5c000-0x00009afe1fff [Boot Data]* > 0x00009afe2000-0x00009afe2fff [Conventional Memory] > 0x00009afe3000-0x00009c01ffff [Boot Data]* > 0x00009c020000-0x00009efbffff [Conventional Memory] > 0x00009efc0000-0x00009f14efff [Boot Code]* > 0x00009f14f000-0x00009f162fff [Runtime Code]* > 0x00009f163000-0x00009f194fff [Runtime Data]* > 0x00009f195000-0x00009f197fff [Boot Data]* > 0x00009f198000-0x00009f198fff [Runtime Data]* > 0x00009f199000-0x00009f1acfff [Conventional Memory] > 0x00009f1ad000-0x00009f1affff [Boot Data]* > 0x00009f1b0000-0x00009f1b0fff [Runtime Data]* > 0x00009f1b1000-0x00009fffffff [Boot Data]* > 0x000004000000-0x000007ffffff [Memory Mapped I/O] > 0x000009010000-0x000009010fff [Memory Mapped I/O] After the patch: > Processing EFI memory map: > 0x000040000000-0x000040000fff [Loader Data | | | | | |WB|WT|WC|UC] > 0x000040001000-0x00004007ffff [Conventional Memory| | | | | |WB|WT|WC|UC] > 0x000040080000-0x00004072afff [Loader Data | | | | | |WB|WT|WC|UC] > 0x00004072b000-0x00005fdfffff [Conventional Memory| | | | | |WB|WT|WC|UC] > 0x00005fe00000-0x00005fe0ffff [Loader Data | | | | | |WB|WT|WC|UC] > 0x00005fe10000-0x0000964e8fff [Conventional Memory| | | | | |WB|WT|WC|UC] > 0x0000964e9000-0x0000964e9fff [Loader Data | | | | | |WB|WT|WC|UC] > 0x0000964ea000-0x000096c52fff [Loader Code | | | | | |WB|WT|WC|UC] > 0x000096c53000-0x00009709dfff [Boot Code | | | | | |WB|WT|WC|UC]* > 0x00009709e000-0x0000970b3fff [Runtime Code |RUN| | | | |WB|WT|WC|UC]* > 0x0000970b4000-0x0000970f4fff [Runtime Data |RUN| | | | |WB|WT|WC|UC]* > 0x0000970f5000-0x000097117fff [Runtime Code |RUN| | | | |WB|WT|WC|UC]* > 0x000097118000-0x000097199fff [Runtime Data |RUN| | | | |WB|WT|WC|UC]* > 0x00009719a000-0x0000971dffff [Runtime Code |RUN| | | | |WB|WT|WC|UC]* > 0x0000971e0000-0x0000997f8fff [Conventional Memory| | | | | |WB|WT|WC|UC] > 0x0000997f9000-0x0000998f1fff [Boot Data | | | | | |WB|WT|WC|UC]* > 0x0000998f2000-0x0000999eafff [Conventional Memory| | | | | |WB|WT|WC|UC] > 0x0000999eb000-0x00009af09fff [Boot Data | | | | | |WB|WT|WC|UC]* > 0x00009af0a000-0x00009af21fff [Conventional Memory| | | | | |WB|WT|WC|UC] > 0x00009af22000-0x00009af46fff [Boot Data | | | | | |WB|WT|WC|UC]* > 0x00009af47000-0x00009af5bfff [Conventional Memory| | | | | |WB|WT|WC|UC] > 0x00009af5c000-0x00009afe1fff [Boot Data | | | | | |WB|WT|WC|UC]* > 0x00009afe2000-0x00009afe2fff [Conventional Memory| | | | | |WB|WT|WC|UC] > 0x00009afe3000-0x00009c01ffff [Boot Data | | | | | |WB|WT|WC|UC]* > 0x00009c020000-0x00009efbffff [Conventional Memory| | | | | |WB|WT|WC|UC] > 0x00009efc0000-0x00009f14efff [Boot Code | | | | | |WB|WT|WC|UC]* > 0x00009f14f000-0x00009f162fff [Runtime Code |RUN| | | | |WB|WT|WC|UC]* > 0x00009f163000-0x00009f194fff [Runtime Data |RUN| | | | |WB|WT|WC|UC]* > 0x00009f195000-0x00009f197fff [Boot Data | | | | | |WB|WT|WC|UC]* > 0x00009f198000-0x00009f198fff [Runtime Data |RUN| | | | |WB|WT|WC|UC]* > 0x00009f199000-0x00009f1acfff [Conventional Memory| | | | | |WB|WT|WC|UC] > 0x00009f1ad000-0x00009f1affff [Boot Data | | | | | |WB|WT|WC|UC]* > 0x00009f1b0000-0x00009f1b0fff [Runtime Data |RUN| | | | |WB|WT|WC|UC]* > 0x00009f1b1000-0x00009fffffff [Boot Data | | | | | |WB|WT|WC|UC]* > 0x000004000000-0x000007ffffff [Memory Mapped I/O |RUN| | | | | | | |UC] > 0x000009010000-0x000009010fff [Memory Mapped I/O |RUN| | | | | | | |UC] The attribute bitmap is now displayed, in decoded form. Signed-off-by: Laszlo Ersek Tested-by: Ard Biesheuvel Acked-by: Ard Biesheuvel Signed-off-by: Matt Fleming --- arch/arm64/kernel/efi.c | 26 ++++++-------------------- 1 file changed, 6 insertions(+), 20 deletions(-) (limited to 'arch') diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index 8f5db4a3c9d9..865fdf5c7344 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -120,23 +120,6 @@ out: return retval; } -static __initdata char memory_type_name[][32] = { - {"Reserved"}, - {"Loader Code"}, - {"Loader Data"}, - {"Boot Code"}, - {"Boot Data"}, - {"Runtime Code"}, - {"Runtime Data"}, - {"Conventional Memory"}, - {"Unusable Memory"}, - {"ACPI Reclaim Memory"}, - {"ACPI Memory NVS"}, - {"Memory Mapped I/O"}, - {"MMIO Port Space"}, - {"PAL Code"}, -}; - /* * Return true for RAM regions we want to permanently reserve. */ @@ -167,10 +150,13 @@ static __init void reserve_regions(void) paddr = md->phys_addr; npages = md->num_pages; - if (uefi_debug) - pr_info(" 0x%012llx-0x%012llx [%s]", + if (uefi_debug) { + char buf[64]; + + pr_info(" 0x%012llx-0x%012llx %s", paddr, paddr + (npages << EFI_PAGE_SHIFT) - 1, - memory_type_name[md->type]); + efi_md_typeattr_format(buf, sizeof(buf), md)); + } memrange_efi_to_native(&paddr, &npages); size = npages << PAGE_SHIFT; -- cgit v1.2.3 From 24ffd84b606dafa93a5f8f6e6dbaa06fbde11632 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Sep 2014 19:42:14 +0200 Subject: x86/efi: Remove unused efi_call* macros Complement commit 62fa6e69a436 ("x86/efi: Delete most of the efi_call* macros") and delete the stub macros for the !CONFIG_EFI case, too. In fact, there are no EFI calls in this case so we don't need a dummy for efi_call() even. Signed-off-by: Mathias Krause Signed-off-by: Matt Fleming --- arch/x86/include/asm/efi.h | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index b39ee5f2c02d..5375df643818 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -188,16 +188,6 @@ extern struct efi_config *efi_early; extern bool efi_reboot_required(void); #else -/* - * IF EFI is not configured, have the EFI calls return -ENOSYS. - */ -#define efi_call0(_f) (-ENOSYS) -#define efi_call1(_f, _a1) (-ENOSYS) -#define efi_call2(_f, _a1, _a2) (-ENOSYS) -#define efi_call3(_f, _a1, _a2, _a3) (-ENOSYS) -#define efi_call4(_f, _a1, _a2, _a3, _a4) (-ENOSYS) -#define efi_call5(_f, _a1, _a2, _a3, _a4, _a5) (-ENOSYS) -#define efi_call6(_f, _a1, _a2, _a3, _a4, _a5, _a6) (-ENOSYS) static inline void parse_efi_setup(u64 phys_addr, u32 data_len) {} static inline bool efi_reboot_required(void) { -- cgit v1.2.3 From 609206854767559ecbb1c308bbd6ef7af13d8c6e Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Sep 2014 19:42:15 +0200 Subject: x86/efi: Unexport add_efi_memmap variable This variable was accidentally exported, even though it's only used in this compilation unit and only during initialization. Remove the bogus export, make the variable static instead and mark it as __initdata. Fixes: 200001eb140e ("x86 boot: only pick up additional EFI memmap...") Cc: Paul Jackson Signed-off-by: Mathias Krause Signed-off-by: Matt Fleming --- arch/x86/include/asm/efi.h | 1 - arch/x86/platform/efi/efi.c | 4 +--- 2 files changed, 1 insertion(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index 5375df643818..ce7b1c5ff78d 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -88,7 +88,6 @@ extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size, #define efi_in_nmi() in_nmi() -extern int add_efi_memmap; extern struct efi_scratch efi_scratch; extern void efi_set_executable(efi_memory_desc_t *md, bool executable); extern int efi_memblock_x86_reserve_range(void); diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index f0be3d1da3de..03938d17ad6d 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -70,9 +70,7 @@ static efi_config_table_type_t arch_tables[] __initdata = { u64 efi_setup; /* efi setup_data physical address */ -int add_efi_memmap; -EXPORT_SYMBOL(add_efi_memmap); - +static int add_efi_memmap __initdata; static int __init setup_add_efi_memmap(char *arg) { add_efi_memmap = 1; -- cgit v1.2.3 From 0ce4605c9aa7b9c25bb4d117eb07db67cd7f1991 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Sep 2014 19:42:16 +0200 Subject: x86/efi: Update comment regarding required phys mapped EFI services Commit 3f4a7836e331 ("x86/efi: Rip out phys_efi_get_time()") left set_virtual_address_map as the only runtime service needed with a phys mapping but missed to update the preceding comment. Fix that. Signed-off-by: Mathias Krause Signed-off-by: Matt Fleming --- arch/x86/platform/efi/efi.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'arch') diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 03938d17ad6d..1bc2c878e42e 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -337,9 +337,9 @@ static int __init efi_runtime_init32(void) } /* - * We will only need *early* access to the following two - * EFI runtime services before set_virtual_address_map - * is invoked. + * We will only need *early* access to the SetVirtualAddressMap + * EFI runtime service. All other runtime services will be called + * via the virtual mapping. */ efi_phys.set_virtual_address_map = (efi_set_virtual_address_map_t *) @@ -361,9 +361,9 @@ static int __init efi_runtime_init64(void) } /* - * We will only need *early* access to the following two - * EFI runtime services before set_virtual_address_map - * is invoked. + * We will only need *early* access to the SetVirtualAddressMap + * EFI runtime service. All other runtime services will be called + * via the virtual mapping. */ efi_phys.set_virtual_address_map = (efi_set_virtual_address_map_t *) -- cgit v1.2.3 From 4e78eb056136b002ecdfbbf61436fedfb8a3c76b Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Sep 2014 19:42:17 +0200 Subject: x86/efi: Mark initialization code as such The 32 bit and 64 bit implementations differ in their __init annotations for some functions referenced from the common EFI code. Namely, the 32 bit variant is missing some of the __init annotations the 64 bit variant has. To solve the colliding annotations, mark the corresponding functions in efi_32.c as initialization code, too -- as it is such. Actually, quite a few more functions are only used during initialization and therefore can be marked __init. They are therefore annotated, too. Also add the __init annotation to the prototypes in the efi.h header so users of those functions will see it's meant as initialization code only. This patch also fixes the "prelog" typo. ("prologue" / "epilogue" might be more appropriate but this is C code after all, not an opera! :D) Signed-off-by: Mathias Krause Signed-off-by: Matt Fleming --- arch/x86/include/asm/efi.h | 20 ++++++++++---------- arch/x86/platform/efi/efi.c | 4 ++-- arch/x86/platform/efi/efi_32.c | 12 +++++++----- arch/x86/platform/efi/efi_64.c | 6 +++--- arch/x86/platform/efi/efi_stub_32.S | 4 ++-- 5 files changed, 24 insertions(+), 22 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index ce7b1c5ff78d..abba1fe1db5e 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -81,25 +81,25 @@ extern u64 asmlinkage efi_call(void *fp, ...); */ #define __efi_call_virt(f, args...) efi_call_virt(f, args) -extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size, - u32 type, u64 attribute); +extern void __iomem *__init efi_ioremap(unsigned long addr, unsigned long size, + u32 type, u64 attribute); #endif /* CONFIG_X86_32 */ #define efi_in_nmi() in_nmi() extern struct efi_scratch efi_scratch; -extern void efi_set_executable(efi_memory_desc_t *md, bool executable); -extern int efi_memblock_x86_reserve_range(void); -extern void efi_call_phys_prelog(void); -extern void efi_call_phys_epilog(void); -extern void efi_unmap_memmap(void); -extern void efi_memory_uc(u64 addr, unsigned long size); +extern void __init efi_set_executable(efi_memory_desc_t *md, bool executable); +extern int __init efi_memblock_x86_reserve_range(void); +extern void __init efi_call_phys_prolog(void); +extern void __init efi_call_phys_epilog(void); +extern void __init efi_unmap_memmap(void); +extern void __init efi_memory_uc(u64 addr, unsigned long size); extern void __init efi_map_region(efi_memory_desc_t *md); extern void __init efi_map_region_fixed(efi_memory_desc_t *md); extern void efi_sync_low_kernel_mappings(void); -extern int efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages); -extern void efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages); +extern int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages); +extern void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages); extern void __init old_map_region(efi_memory_desc_t *md); extern void __init runtime_code_page_mkexec(void); extern void __init efi_runtime_mkexec(void); diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 1bc2c878e42e..dbc8627a5cdf 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -86,7 +86,7 @@ static efi_status_t __init phys_efi_set_virtual_address_map( { efi_status_t status; - efi_call_phys_prelog(); + efi_call_phys_prolog(); status = efi_call_phys(efi_phys.set_virtual_address_map, memory_map_size, descriptor_size, descriptor_version, virtual_map); @@ -530,7 +530,7 @@ void __init runtime_code_page_mkexec(void) } } -void efi_memory_uc(u64 addr, unsigned long size) +void __init efi_memory_uc(u64 addr, unsigned long size) { unsigned long page_shift = 1UL << EFI_PAGE_SHIFT; u64 npages; diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c index 9ee3491e31fb..40e7cda52936 100644 --- a/arch/x86/platform/efi/efi_32.c +++ b/arch/x86/platform/efi/efi_32.c @@ -33,7 +33,7 @@ /* * To make EFI call EFI runtime service in physical addressing mode we need - * prelog/epilog before/after the invocation to disable interrupt, to + * prolog/epilog before/after the invocation to disable interrupt, to * claim EFI runtime service handler exclusively and to duplicate a memory in * low memory space say 0 - 3G. */ @@ -41,11 +41,13 @@ static unsigned long efi_rt_eflags; void efi_sync_low_kernel_mappings(void) {} void __init efi_dump_pagetable(void) {} -int efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) +int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) { return 0; } -void efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages) {} +void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages) +{ +} void __init efi_map_region(efi_memory_desc_t *md) { @@ -55,7 +57,7 @@ void __init efi_map_region(efi_memory_desc_t *md) void __init efi_map_region_fixed(efi_memory_desc_t *md) {} void __init parse_efi_setup(u64 phys_addr, u32 data_len) {} -void efi_call_phys_prelog(void) +void __init efi_call_phys_prolog(void) { struct desc_ptr gdt_descr; @@ -69,7 +71,7 @@ void efi_call_phys_prelog(void) load_gdt(&gdt_descr); } -void efi_call_phys_epilog(void) +void __init efi_call_phys_epilog(void) { struct desc_ptr gdt_descr; diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 290d397e1dd9..35aecb6042fb 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -79,7 +79,7 @@ static void __init early_code_mapping_set_exec(int executable) } } -void __init efi_call_phys_prelog(void) +void __init efi_call_phys_prolog(void) { unsigned long vaddress; int pgd; @@ -139,7 +139,7 @@ void efi_sync_low_kernel_mappings(void) sizeof(pgd_t) * num_pgds); } -int efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) +int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) { unsigned long text; struct page *page; @@ -192,7 +192,7 @@ int efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) return 0; } -void efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages) +void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages) { pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd); diff --git a/arch/x86/platform/efi/efi_stub_32.S b/arch/x86/platform/efi/efi_stub_32.S index fbe66e626c09..040192b50d02 100644 --- a/arch/x86/platform/efi/efi_stub_32.S +++ b/arch/x86/platform/efi/efi_stub_32.S @@ -27,13 +27,13 @@ ENTRY(efi_call_phys) * set to 0x0010, DS and SS have been set to 0x0018. In EFI, I found * the values of these registers are the same. And, the corresponding * GDT entries are identical. So I will do nothing about segment reg - * and GDT, but change GDT base register in prelog and epilog. + * and GDT, but change GDT base register in prolog and epilog. */ /* * 1. Now I am running with EIP = + PAGE_OFFSET. * But to make it smoothly switch from virtual mode to flat mode. - * The mapping of lower virtual memory has been created in prelog and + * The mapping of lower virtual memory has been created in prolog and * epilog. */ movl $1f, %edx -- cgit v1.2.3 From 77e21e87acec8c857df4bfbc647ea21d0a87364d Mon Sep 17 00:00:00 2001 From: Andre Müller Date: Wed, 10 Sep 2014 01:00:22 +0200 Subject: x86/efi: Adding efi_printks on memory allocationa and pci.reads MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit All other calls to allocate memory seem to make some noise already, with the exception of two calls (for gop, uga) in the setup_graphics path. The purpose is to be noisy on worrysome errors immediately. commit fb86b2440de0 ("x86/efi: Add better error logging to EFI boot stub") introduces printing false alarms for lots of hardware. Rather than playing Whack a Mole with non-fatal exit conditions, try the other way round. This is per Matt Fleming's suggestion: > Where I think we could improve things > is by adding efi_printk() message in certain error paths. Clearly, not > all error paths need such messages, e.g. the EFI_INVALID_PARAMETER path > you highlighted above, but it makes sense for memory allocation and PCI > read failures. Link: http://article.gmane.org/gmane.linux.kernel.efi/4628 Signed-off-by: Andre Müller Cc: Ulf Winkelvos Signed-off-by: Matt Fleming --- arch/x86/boot/compressed/eboot.c | 28 +++++++++++++++++++++------- 1 file changed, 21 insertions(+), 7 deletions(-) (limited to 'arch') diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index f4bdab1dbf66..ed8e06c59a4c 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -323,8 +323,10 @@ __setup_efi_pci32(efi_pci_io_protocol_32 *pci, struct pci_setup_rom **__rom) size = pci->romsize + sizeof(*rom); status = efi_call_early(allocate_pool, EFI_LOADER_DATA, size, &rom); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to alloc mem for rom\n"); return status; + } memset(rom, 0, sizeof(*rom)); @@ -337,14 +339,18 @@ __setup_efi_pci32(efi_pci_io_protocol_32 *pci, struct pci_setup_rom **__rom) status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, PCI_VENDOR_ID, 1, &(rom->vendor)); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to read rom->vendor\n"); goto free_struct; + } status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, PCI_DEVICE_ID, 1, &(rom->devid)); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to read rom->devid\n"); goto free_struct; + } status = efi_early->call(pci->get_location, pci, &(rom->segment), &(rom->bus), &(rom->device), &(rom->function)); @@ -427,8 +433,10 @@ __setup_efi_pci64(efi_pci_io_protocol_64 *pci, struct pci_setup_rom **__rom) size = pci->romsize + sizeof(*rom); status = efi_call_early(allocate_pool, EFI_LOADER_DATA, size, &rom); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to alloc mem for rom\n"); return status; + } rom->data.type = SETUP_PCI; rom->data.len = size - sizeof(struct setup_data); @@ -439,14 +447,18 @@ __setup_efi_pci64(efi_pci_io_protocol_64 *pci, struct pci_setup_rom **__rom) status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, PCI_VENDOR_ID, 1, &(rom->vendor)); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to read rom->vendor\n"); goto free_struct; + } status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, PCI_DEVICE_ID, 1, &(rom->devid)); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to read rom->devid\n"); goto free_struct; + } status = efi_early->call(pci->get_location, pci, &(rom->segment), &(rom->bus), &(rom->device), &(rom->function)); @@ -526,8 +538,10 @@ static efi_status_t setup_efi_pci(struct boot_params *params) EFI_LOADER_DATA, size, (void **)&pci_handle); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to alloc mem for pci_handle\n"); return status; + } status = efi_call_early(locate_handle, EFI_LOCATE_BY_PROTOCOL, &pci_proto, -- cgit v1.2.3 From 60b4dc7720a5251f5dbda69ad404e0bcb3cb6bfb Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Tue, 30 Sep 2014 15:03:38 +0100 Subject: efi: Delete the in_nmi() conditional runtime locking commit 5dc3826d9f08 ("efi: Implement mandatory locking for UEFI Runtime Services") implemented some conditional locking when accessing variable runtime services that Ingo described as "pretty disgusting". The intention with the !efi_in_nmi() checks was to avoid live-locks when trying to write pstore crash data into an EFI variable. Such lockless accesses are allowed according to the UEFI specification when we're in a "non-recoverable" state, but whether or not things are implemented correctly in actual firmware implementations remains an unanswered question, and so it would seem sensible to avoid doing any kind of unsynchronized variable accesses. Furthermore, the efi_in_nmi() tests are inadequate because they don't account for the case where we call EFI variable services from panic or oops callbacks and aren't executing in NMI context. In other words, live-locking is still possible. Let's just remove the conditional locking altogether. Now we've got the ->set_variable_nonblocking() EFI variable operation we can abort if the runtime lock is already held. Aborting is by far the safest option. Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Ard Biesheuvel Cc: Matthew Garrett Signed-off-by: Matt Fleming --- arch/x86/include/asm/efi.h | 2 -- drivers/firmware/efi/runtime-wrappers.c | 17 ++++------------- 2 files changed, 4 insertions(+), 15 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index abba1fe1db5e..408ad6d3222e 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -86,8 +86,6 @@ extern void __iomem *__init efi_ioremap(unsigned long addr, unsigned long size, #endif /* CONFIG_X86_32 */ -#define efi_in_nmi() in_nmi() - extern struct efi_scratch efi_scratch; extern void __init efi_set_executable(efi_memory_desc_t *md, bool executable); extern int __init efi_memblock_x86_reserve_range(void); diff --git a/drivers/firmware/efi/runtime-wrappers.c b/drivers/firmware/efi/runtime-wrappers.c index 4349206198b2..228bbf910461 100644 --- a/drivers/firmware/efi/runtime-wrappers.c +++ b/drivers/firmware/efi/runtime-wrappers.c @@ -86,9 +86,6 @@ static DEFINE_SPINLOCK(efi_runtime_lock); * for QueryVariableInfo() and SetVariable(), as these can be reached in NMI * context through efi_pstore_write(). */ -#ifndef efi_in_nmi -#define efi_in_nmi() (0) -#endif /* * As per commit ef68c8f87ed1 ("x86: Serialize EFI time accesses on rtc_lock"), @@ -189,14 +186,11 @@ static efi_status_t virt_efi_set_variable(efi_char16_t *name, { unsigned long flags; efi_status_t status; - bool __in_nmi = efi_in_nmi(); - if (!__in_nmi) - spin_lock_irqsave(&efi_runtime_lock, flags); + spin_lock_irqsave(&efi_runtime_lock, flags); status = efi_call_virt(set_variable, name, vendor, attr, data_size, data); - if (!__in_nmi) - spin_unlock_irqrestore(&efi_runtime_lock, flags); + spin_unlock_irqrestore(&efi_runtime_lock, flags); return status; } @@ -225,17 +219,14 @@ static efi_status_t virt_efi_query_variable_info(u32 attr, { unsigned long flags; efi_status_t status; - bool __in_nmi = efi_in_nmi(); if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION) return EFI_UNSUPPORTED; - if (!__in_nmi) - spin_lock_irqsave(&efi_runtime_lock, flags); + spin_lock_irqsave(&efi_runtime_lock, flags); status = efi_call_virt(query_variable_info, attr, storage_space, remaining_space, max_variable_size); - if (!__in_nmi) - spin_unlock_irqrestore(&efi_runtime_lock, flags); + spin_unlock_irqrestore(&efi_runtime_lock, flags); return status; } -- cgit v1.2.3 From f2fc42b6ac31f4d808da7a9da460dd433a71e976 Mon Sep 17 00:00:00 2001 From: Suman Anna Date: Thu, 12 Jun 2014 22:30:34 +0530 Subject: mailbox: rename pl320-ipc specific mailbox.h The patch 30058677 "ARM / highbank: add support for pl320 IPC" added a pl320 IPC specific header file as a generic mailbox.h. This file has been renamed appropriately to allow the introduction of the generic mailbox API framework. Acked-by: Mark Langsdorf Cc: Rafael J. Wysocki Signed-off-by: Suman Anna Reviewed-by: Mark Brown Acked-by: Arnd Bergmann --- arch/arm/mach-highbank/highbank.c | 2 +- drivers/cpufreq/highbank-cpufreq.c | 2 +- drivers/mailbox/pl320-ipc.c | 2 +- include/linux/mailbox.h | 17 ----------------- include/linux/pl320-ipc.h | 17 +++++++++++++++++ 5 files changed, 20 insertions(+), 20 deletions(-) delete mode 100644 include/linux/mailbox.h create mode 100644 include/linux/pl320-ipc.h (limited to 'arch') diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c index 8c35ae4ff176..07a09570175d 100644 --- a/arch/arm/mach-highbank/highbank.c +++ b/arch/arm/mach-highbank/highbank.c @@ -20,7 +20,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/drivers/cpufreq/highbank-cpufreq.c b/drivers/cpufreq/highbank-cpufreq.c index bf8902a0866d..b464f29d8d54 100644 --- a/drivers/cpufreq/highbank-cpufreq.c +++ b/drivers/cpufreq/highbank-cpufreq.c @@ -19,7 +19,7 @@ #include #include #include -#include +#include #include #define HB_CPUFREQ_CHANGE_NOTE 0x80000001 diff --git a/drivers/mailbox/pl320-ipc.c b/drivers/mailbox/pl320-ipc.c index d873cbae2fbb..f3755e0aa935 100644 --- a/drivers/mailbox/pl320-ipc.c +++ b/drivers/mailbox/pl320-ipc.c @@ -26,7 +26,7 @@ #include #include -#include +#include #define IPCMxSOURCE(m) ((m) * 0x40) #define IPCMxDSET(m) (((m) * 0x40) + 0x004) diff --git a/include/linux/mailbox.h b/include/linux/mailbox.h deleted file mode 100644 index 5161f63ec1c8..000000000000 --- a/include/linux/mailbox.h +++ /dev/null @@ -1,17 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see . - */ - -int pl320_ipc_transmit(u32 *data); -int pl320_ipc_register_notifier(struct notifier_block *nb); -int pl320_ipc_unregister_notifier(struct notifier_block *nb); diff --git a/include/linux/pl320-ipc.h b/include/linux/pl320-ipc.h new file mode 100644 index 000000000000..5161f63ec1c8 --- /dev/null +++ b/include/linux/pl320-ipc.h @@ -0,0 +1,17 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +int pl320_ipc_transmit(u32 *data); +int pl320_ipc_register_notifier(struct notifier_block *nb); +int pl320_ipc_unregister_notifier(struct notifier_block *nb); -- cgit v1.2.3 From 5c86c5339c566d943606f551332e0efa8cf87d03 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 9 Oct 2014 11:28:34 -0700 Subject: ARM: omap2plus_defconfig: Enable ARM erratum 430973 for omap3 Somehow we don't have this set in omap2plus_defconfig. Without this apps can segfault randomly on omap3. I can reproduce this easily on am37xx-evm by doing apt-get update over NFSroot. Tested-by: Felipe Balbi Signed-off-by: Tony Lindgren --- arch/arm/configs/omap2plus_defconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig index 69c7bed3c634..16e719c268dd 100644 --- a/arch/arm/configs/omap2plus_defconfig +++ b/arch/arm/configs/omap2plus_defconfig @@ -51,6 +51,7 @@ CONFIG_SOC_AM43XX=y CONFIG_SOC_DRA7XX=y CONFIG_ARM_THUMBEE=y CONFIG_ARM_ERRATA_411920=y +CONFIG_ARM_ERRATA_430973=y CONFIG_SMP=y CONFIG_NR_CPUS=2 CONFIG_CMA=y -- cgit v1.2.3 From b16ccfe02313acd829debfccac45531f45d797cd Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 9 Oct 2014 11:28:34 -0700 Subject: ARM: dts: Disable smc91x on n900 until bootloader dependency is removed I added smc91x support but turns out we currently do not set the smc91x timings in gpmc.c but rely on the bootloader timings. This produces the following error unless the smc91x GPMC timings are initialized by the bootloader: Unhandled fault: external abort on non-linefetch (0x1008) at 0xd080630e ... [] (smc_drv_probe) from [] (platform_drv_probe+0x2c/0x5c) [] (platform_drv_probe) from [] (driver_probe_device+0x104/0x22c) [] (driver_probe_device) from [] (__driver_attach+0x94/0x98) [] (__driver_attach) from [] (bus_for_each_dev+0x54/0x88) [] (bus_for_each_dev) from [] (bus_add_driver+0xd8/0x1d8) [] (bus_add_driver) from [] (driver_register+0x78/0xf4) [] (driver_register) from [] (do_one_initcall+0x80/0x1c0) [] (do_one_initcall) from [] (kernel_init_freeable+0x1b8/0x28c) [] (kernel_init_freeable) from [] (kernel_init+0x8/0xec) [] (kernel_init) from [] (ret_from_fork+0x14/0x2c) Let's fix the issue by disabling the smc91x module for now until we have sorted out the issues in gpmc.c. Reported-by: Kevin Hilman Tested-by: Kevin Hilman Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap3-n900.dts | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts index 9b0494a8ab45..739fcf29c643 100644 --- a/arch/arm/boot/dts/omap3-n900.dts +++ b/arch/arm/boot/dts/omap3-n900.dts @@ -659,6 +659,9 @@ ethernet@gpmc { compatible = "smsc,lan91c94"; + + status = "disabled"; + interrupt-parent = <&gpio2>; interrupts = <22 IRQ_TYPE_LEVEL_HIGH>; /* gpio54 */ reg = <1 0x300 0xf>; /* 16 byte IO range at offset 0x300 */ -- cgit v1.2.3 From 1028ccf560b97adbf272381a61a67e17d44d1054 Mon Sep 17 00:00:00 2001 From: Romeo Cane Date: Thu, 2 Oct 2014 15:41:39 +0100 Subject: powerpc: Fix sys_call_table declaration to enable syscall tracing Declaring sys_call_table as a pointer causes the compiler to generate the wrong lookup code in arch_syscall_addr(). : lis r9,-16384 rlwinm r3,r3,2,0,29 - lwz r11,30640(r9) - lwzx r3,r11,r3 + addi r9,r9,30640 + lwzx r3,r9,r3 blr The actual sys_call_table symbol, declared in assembler, is an array. If we lie about that to the compiler we get the wrong code generated, as above. This definition seems only to be used by the syscall tracing code in kernel/trace/trace_syscalls.c. With this patch I can successfully use the syscall tracepoints: bash-3815 [002] .... 333.239082: sys_write -> 0x2 bash-3815 [002] .... 333.239087: sys_dup2(oldfd: a, newfd: 1) bash-3815 [002] .... 333.239088: sys_dup2 -> 0x1 bash-3815 [002] .... 333.239092: sys_fcntl(fd: a, cmd: 1, arg: 0) bash-3815 [002] .... 333.239093: sys_fcntl -> 0x1 bash-3815 [002] .... 333.239094: sys_close(fd: a) bash-3815 [002] .... 333.239094: sys_close -> 0x0 Signed-off-by: Romeo Cane Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/syscall.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/include/asm/syscall.h b/arch/powerpc/include/asm/syscall.h index b54b2add07be..528ba9d8eed5 100644 --- a/arch/powerpc/include/asm/syscall.h +++ b/arch/powerpc/include/asm/syscall.h @@ -17,7 +17,7 @@ /* ftrace syscalls requires exporting the sys_call_table */ #ifdef CONFIG_FTRACE_SYSCALLS -extern const unsigned long *sys_call_table; +extern const unsigned long sys_call_table[]; #endif /* CONFIG_FTRACE_SYSCALLS */ static inline long syscall_get_nr(struct task_struct *task, -- cgit v1.2.3 From c675c7db629bd1abf4a9a36c0200686716eeea05 Mon Sep 17 00:00:00 2001 From: Mahesh Salgaonkar Date: Tue, 7 Oct 2014 15:55:33 +0530 Subject: powerpc/book3s: Don't clear MSR_RI in hmi handler. In HMI interrupt handler we don't touch SRR0/SRR1, instead we touch HSRR0/HSRR1. Hence we don't need to clear MSR_RI bit. Signed-off-by: Mahesh Salgaonkar Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/exceptions-64s.S | 5 ----- 1 file changed, 5 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 050f79a4a168..72e783ea0681 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1270,11 +1270,6 @@ hmi_exception_early: addi r3,r1,STACK_FRAME_OVERHEAD bl hmi_exception_realmode /* Windup the stack. */ - /* Clear MSR_RI before setting SRR0 and SRR1. */ - li r0,MSR_RI - mfmsr r9 /* get MSR value */ - andc r9,r9,r0 - mtmsrd r9,1 /* Clear MSR_RI */ /* Move original HSRR0 and HSRR1 into the respective regs */ ld r9,_MSR(r1) mtspr SPRN_HSRR1,r9 -- cgit v1.2.3 From 6507955c9781a75f1b085f0cf0a77b9df06f0197 Mon Sep 17 00:00:00 2001 From: Mahesh Salgaonkar Date: Fri, 10 Oct 2014 21:28:26 +0530 Subject: powerpc/powernv: Fallback to old HMI handling behavior for old firmware Recently we moved HMI handling into Linux kernel instead of taking HMI directly in OPAL. This new change is dependent on new OPAL call for HMI recovery which was introduced in newer firmware. While this new change works fine with latest OPAL firmware, we broke the HMI handling if we run newer kernel on old OPAL firmware that results in system hang. This patch fixes this issue by falling back to old HMI behavior on older OPAL firmware. This patch introduces a check for opal token OPAL_HANDLE_HMI to see if we are running on newer firmware or old firmware. On newer firmware this check would return OPAL_TOKEN_PRESENT, otherwise we are running on old firmware and fallback to old HMI behavior. Old firmware: POWER8 System Firmware Release as of today <= SV810_087 Action: Let OPAL handle HMIs Newer firmware: in development/yet to be released. Action: Let Linux host handle HMIs. This patch depends on opal check token patch posted at ppc-devel https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-August/120224.html Signed-off-by: Mahesh Salgaonkar [mpe: Minor comment and printk rewording] Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/opal.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'arch') diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index cf85ba86bf5e..34d96615db6c 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -194,6 +194,27 @@ static int __init opal_register_exception_handlers(void) * fwnmi area at 0x7000 to provide the glue space to OPAL */ glue = 0x7000; + + /* + * Check if we are running on newer firmware that exports + * OPAL_HANDLE_HMI token. If yes, then don't ask OPAL to patch + * the HMI interrupt and we catch it directly in Linux. + * + * For older firmware (i.e currently released POWER8 System Firmware + * as of today <= SV810_087), we fallback to old behavior and let OPAL + * patch the HMI vector and handle it inside OPAL firmware. + * + * For newer firmware (in development/yet to be released) we will + * start catching/handling HMI directly in Linux. + */ + if (!opal_check_token(OPAL_HANDLE_HMI)) { + pr_info("opal: Old firmware detected, OPAL handles HMIs.\n"); + opal_register_exception_handler( + OPAL_HYPERVISOR_MAINTENANCE_HANDLER, + 0, glue); + glue += 128; + } + opal_register_exception_handler(OPAL_SOFTPATCH_HANDLER, 0, glue); #endif -- cgit v1.2.3 From 2d15b9b479512f05680541acffd9acbbc831a47c Mon Sep 17 00:00:00 2001 From: Nishanth Aravamudan Date: Thu, 9 Oct 2014 16:41:28 -0700 Subject: powerpc/numa: check error return from proc_create proc_create can fail, we should check the return value and pass up the failure. Suggested-by: Michael Ellerman Signed-off-by: Nishanth Aravamudan Signed-off-by: Michael Ellerman --- arch/powerpc/mm/numa.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 649666d5d1c2..51d707d85b2d 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1801,7 +1801,8 @@ static const struct file_operations topology_ops = { static int topology_update_init(void) { start_topology_update(); - proc_create("powerpc/topology_updates", 0644, NULL, &topology_ops); + if (!proc_create("powerpc/topology_updates", 0644, NULL, &topology_ops)) + return -ENOMEM; return 0; } -- cgit v1.2.3 From 2d73bae12b26db6eba074b70406c707961b6cda9 Mon Sep 17 00:00:00 2001 From: Nishanth Aravamudan Date: Fri, 10 Oct 2014 09:04:49 -0700 Subject: powerpc/numa: Add ability to disable and debug topology updates We have hit a few customer issues with the topology update code (VPHN and PRRN). It would be nice to be able to debug the notifications coming from the hypervisor in both cases to the LPAR, as well as to disable responding to the notifications at boot-time, to narrow down the source of the problems. Add a basic level of such functionality, similar to the numa= command-line parameter. We already have a toggle in /proc/powerpc/topology_updates that allows run-time enabling/disabling, so the updates can be started at run-time if desired. But the bugs we've run into have occured during boot or very shortly after coming to login, and have resulted in a broken NUMA topology. Signed-off-by: Nishanth Aravamudan Signed-off-by: Michael Ellerman --- Documentation/kernel-parameters.txt | 6 ++++++ arch/powerpc/mm/numa.c | 35 ++++++++++++++++++++++++++++++++++- 2 files changed, 40 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 10d51c2f10d7..c536e1c74320 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -3370,6 +3370,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted. e.g. base its process migration decisions on it. Default is on. + topology_updates= [KNL, PPC, NUMA] + Format: {off} + Specify if the kernel should ignore (off) + topology updates sent by the hypervisor to this + LPAR. + tp720= [HW,PS2] tpm_suspend_pcr=[HW,TPM] diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 51d707d85b2d..177659050fa0 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -8,6 +8,8 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ +#define pr_fmt(fmt) "numa: " fmt + #include #include #include @@ -1153,6 +1155,22 @@ static int __init early_numa(char *p) } early_param("numa", early_numa); +static bool topology_updates_enabled = true; + +static int __init early_topology_updates(char *p) +{ + if (!p) + return 0; + + if (!strcmp(p, "off")) { + pr_info("Disabling topology updates\n"); + topology_updates_enabled = false; + } + + return 0; +} +early_param("topology_updates", early_topology_updates); + #ifdef CONFIG_MEMORY_HOTPLUG /* * Find the node associated with a hot added memory section for @@ -1539,6 +1557,9 @@ int arch_update_cpu_topology(void) struct device *dev; int weight, new_nid, i = 0; + if (!prrn_enabled && !vphn_enabled) + return 0; + weight = cpumask_weight(&cpu_associativity_changes_mask); if (!weight) return 0; @@ -1592,6 +1613,15 @@ int arch_update_cpu_topology(void) cpu = cpu_last_thread_sibling(cpu); } + pr_debug("Topology update for the following CPUs:\n"); + if (cpumask_weight(&updated_cpus)) { + for (ud = &updates[0]; ud; ud = ud->next) { + pr_debug("cpu %d moving from node %d " + "to %d\n", ud->cpu, + ud->old_nid, ud->new_nid); + } + } + /* * In cases where we have nothing to update (because the updates list * is too short or because the new topology is same as the old one), @@ -1800,7 +1830,10 @@ static const struct file_operations topology_ops = { static int topology_update_init(void) { - start_topology_update(); + /* Do not poll for changes if disabled at boot */ + if (topology_updates_enabled) + start_topology_update(); + if (!proc_create("powerpc/topology_updates", 0644, NULL, &topology_ops)) return -ENOMEM; -- cgit v1.2.3 From 70e956483efd8a70e86fb2260dcd2395eb1affef Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 10 Sep 2014 11:08:39 +0530 Subject: ARC: [arcfpga] consolidate machine description, DT * AA4/ML509 have same machine descriptions * Rename simulation machine description Signed-off-by: Vineet Gupta --- arch/arc/boot/dts/angel4.dts | 5 ----- arch/arc/boot/dts/nsimosci.dts | 5 ----- arch/arc/plat-arcfpga/platform.c | 27 +++++++-------------------- 3 files changed, 7 insertions(+), 30 deletions(-) (limited to 'arch') diff --git a/arch/arc/boot/dts/angel4.dts b/arch/arc/boot/dts/angel4.dts index 6b57475967a6..757e0c62c4f9 100644 --- a/arch/arc/boot/dts/angel4.dts +++ b/arch/arc/boot/dts/angel4.dts @@ -24,11 +24,6 @@ serial0 = &arcuart0; }; - memory { - device_type = "memory"; - reg = <0x00000000 0x10000000>; /* 256M */ - }; - fpga { compatible = "simple-bus"; #address-cells = <1>; diff --git a/arch/arc/boot/dts/nsimosci.dts b/arch/arc/boot/dts/nsimosci.dts index 4f31b2eb5cdf..825065d66d65 100644 --- a/arch/arc/boot/dts/nsimosci.dts +++ b/arch/arc/boot/dts/nsimosci.dts @@ -27,11 +27,6 @@ serial0 = &uart0; }; - memory { - device_type = "memory"; - reg = <0x80000000 0x10000000>; /* 256M */ - }; - fpga { compatible = "simple-bus"; #address-cells = <1>; diff --git a/arch/arc/plat-arcfpga/platform.c b/arch/arc/plat-arcfpga/platform.c index 6abc341e276d..57bd24f6a4bd 100644 --- a/arch/arc/plat-arcfpga/platform.c +++ b/arch/arc/plat-arcfpga/platform.c @@ -48,27 +48,14 @@ static void __init plat_fpga_populate_dev(void) * callback set, by matching the DT compatible name. */ -static const char *aa4_compat[] __initconst = { +static const char *legacy_fpga_compat[] __initconst = { "snps,arc-angel4", - NULL, -}; - -MACHINE_START(ANGEL4, "angel4") - .dt_compat = aa4_compat, - .init_early = plat_fpga_early_init, - .init_machine = plat_fpga_populate_dev, -#ifdef CONFIG_ISS_SMP_EXTN - .init_smp = iss_model_init_smp, -#endif -MACHINE_END - -static const char *ml509_compat[] __initconst = { "snps,arc-ml509", NULL, }; -MACHINE_START(ML509, "ml509") - .dt_compat = ml509_compat, +MACHINE_START(LEGACY_FPGA, "legacy_fpga") + .dt_compat = legacy_fpga_compat, .init_early = plat_fpga_early_init, .init_machine = plat_fpga_populate_dev, #ifdef CONFIG_ISS_SMP_EXTN @@ -76,13 +63,13 @@ MACHINE_START(ML509, "ml509") #endif MACHINE_END -static const char *nsimosci_compat[] __initconst = { +static const char *simulation_compat[] __initconst = { + "snps,nsim", "snps,nsimosci", NULL, }; -MACHINE_START(NSIMOSCI, "nsimosci") - .dt_compat = nsimosci_compat, - .init_early = NULL, +MACHINE_START(SIMULATION, "simulation") + .dt_compat = simulation_compat, .init_machine = plat_fpga_populate_dev, MACHINE_END -- cgit v1.2.3 From d7f8a085d4f48501b1fa253b48ec4ad7cb4d02cc Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 10 Sep 2014 11:10:54 +0530 Subject: ARC: [plat*] move code out of .init_machine into common All the platforms do the same thing in init_machine callback so move it out of callback into caller of callback Signed-off-by: Vineet Gupta --- arch/arc/Kconfig | 1 + arch/arc/kernel/setup.c | 10 +++++++++- arch/arc/plat-arcfpga/platform.c | 12 ------------ arch/arc/plat-tb10x/Kconfig | 1 - arch/arc/plat-tb10x/tb10x.c | 13 ------------- 5 files changed, 10 insertions(+), 27 deletions(-) (limited to 'arch') diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 9596b0ab108d..bf1e410ee448 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -9,6 +9,7 @@ config ARC def_bool y select BUILDTIME_EXTABLE_SORT + select COMMON_CLK select CLONE_BACKWARDS # ARC Busybox based initramfs absolutely relies on DEVTMPFS for /dev select DEVTMPFS if !INITRAMFS_SOURCE="" diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index da61f2205dc5..686e3fae4420 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -13,7 +13,9 @@ #include #include #include +#include #include +#include #include #include #include @@ -379,7 +381,13 @@ void __init setup_arch(char **cmdline_p) static int __init customize_machine(void) { - /* Add platform devices */ + of_clk_init(NULL); + /* + * Traverses flattened DeviceTree - registering platform devices + * (if any) complete with their resources + */ + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); + if (machine_desc->init_machine) machine_desc->init_machine(); diff --git a/arch/arc/plat-arcfpga/platform.c b/arch/arc/plat-arcfpga/platform.c index 57bd24f6a4bd..b23d5fc59a48 100644 --- a/arch/arc/plat-arcfpga/platform.c +++ b/arch/arc/plat-arcfpga/platform.c @@ -14,7 +14,6 @@ #include #include #include -#include #include #include #include @@ -31,15 +30,6 @@ static void __init plat_fpga_early_init(void) #endif } -static void __init plat_fpga_populate_dev(void) -{ - /* - * Traverses flattened DeviceTree - registering platform devices - * (if any) complete with their resources - */ - of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); -} - /*----------------------- Machine Descriptions ------------------------------ * * Machine description is simply a set of platform/board specific callbacks @@ -57,7 +47,6 @@ static const char *legacy_fpga_compat[] __initconst = { MACHINE_START(LEGACY_FPGA, "legacy_fpga") .dt_compat = legacy_fpga_compat, .init_early = plat_fpga_early_init, - .init_machine = plat_fpga_populate_dev, #ifdef CONFIG_ISS_SMP_EXTN .init_smp = iss_model_init_smp, #endif @@ -71,5 +60,4 @@ static const char *simulation_compat[] __initconst = { MACHINE_START(SIMULATION, "simulation") .dt_compat = simulation_compat, - .init_machine = plat_fpga_populate_dev, MACHINE_END diff --git a/arch/arc/plat-tb10x/Kconfig b/arch/arc/plat-tb10x/Kconfig index 6994c188dc88..d14b3d3c5dfd 100644 --- a/arch/arc/plat-tb10x/Kconfig +++ b/arch/arc/plat-tb10x/Kconfig @@ -18,7 +18,6 @@ menuconfig ARC_PLAT_TB10X bool "Abilis TB10x" - select COMMON_CLK select PINCTRL select PINCTRL_TB10X select PINMUX diff --git a/arch/arc/plat-tb10x/tb10x.c b/arch/arc/plat-tb10x/tb10x.c index 06cb30929460..da0ac0960a4b 100644 --- a/arch/arc/plat-tb10x/tb10x.c +++ b/arch/arc/plat-tb10x/tb10x.c @@ -19,21 +19,9 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - #include -#include -#include -#include - #include - -static void __init tb10x_platform_init(void) -{ - of_clk_init(NULL); - of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); -} - static const char *tb10x_compat[] __initdata = { "abilis,arc-tb10x", NULL, @@ -41,5 +29,4 @@ static const char *tb10x_compat[] __initdata = { MACHINE_START(TB10x, "tb10x") .dt_compat = tb10x_compat, - .init_machine = tb10x_platform_init, MACHINE_END -- cgit v1.2.3 From 72f933e77cfc8c7e38e7214fd774806eb7ecc038 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 10 Sep 2014 11:19:28 +0530 Subject: ARC: [arcfpga] Remove more dead code specifically after switching to generic early arc uart, whole bunch of code is no longer needed Signed-off-by: Vineet Gupta --- arch/arc/plat-arcfpga/include/plat/irq.h | 27 --------------------------- arch/arc/plat-arcfpga/include/plat/memmap.h | 29 ----------------------------- arch/arc/plat-arcfpga/platform.c | 20 +------------------- arch/arc/plat-arcfpga/smp.c | 3 ++- 4 files changed, 3 insertions(+), 76 deletions(-) delete mode 100644 arch/arc/plat-arcfpga/include/plat/irq.h delete mode 100644 arch/arc/plat-arcfpga/include/plat/memmap.h (limited to 'arch') diff --git a/arch/arc/plat-arcfpga/include/plat/irq.h b/arch/arc/plat-arcfpga/include/plat/irq.h deleted file mode 100644 index 2c9dea690ac4..000000000000 --- a/arch/arc/plat-arcfpga/include/plat/irq.h +++ /dev/null @@ -1,27 +0,0 @@ -/* - * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * vineetg: Feb 2009 - * -For AA4 board, IRQ assignments to peripherals - */ - -#ifndef __PLAT_IRQ_H -#define __PLAT_IRQ_H - -#define UART0_IRQ 5 -#define UART1_IRQ 10 -#define UART2_IRQ 11 - -#define IDE_IRQ 13 -#define PCI_IRQ 14 -#define PS2_IRQ 15 - -#ifdef CONFIG_SMP -#define IDU_INTERRUPT_0 16 -#endif - -#endif diff --git a/arch/arc/plat-arcfpga/include/plat/memmap.h b/arch/arc/plat-arcfpga/include/plat/memmap.h deleted file mode 100644 index 5c78e6135a1f..000000000000 --- a/arch/arc/plat-arcfpga/include/plat/memmap.h +++ /dev/null @@ -1,29 +0,0 @@ -/* - * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * vineetg: Feb 2009 - * -For AA4 board, System Memory Map for Peripherals etc - */ - -#ifndef __PLAT_MEMMAP_H -#define __PLAT_MEMMAP_H - -#define UART0_BASE 0xC0FC1000 -#define UART1_BASE 0xC0FC1100 - -#define IDE_CONTROLLER_BASE 0xC0FC9000 - -#define AHB_PCI_HOST_BRG_BASE 0xC0FD0000 - -#define PGU_BASEADDR 0xC0FC8000 -#define VLCK_ADDR 0xC0FCF028 - -#define BVCI_LAT_UNIT_BASE 0xC0FED000 - -#define PS2_BASE_ADDR 0xC0FCC000 - -#endif diff --git a/arch/arc/plat-arcfpga/platform.c b/arch/arc/plat-arcfpga/platform.c index b23d5fc59a48..afc88254acc1 100644 --- a/arch/arc/plat-arcfpga/platform.c +++ b/arch/arc/plat-arcfpga/platform.c @@ -8,27 +8,9 @@ * published by the Free Software Foundation. */ -#include #include -#include -#include -#include -#include -#include -#include #include -#include #include -#include - -static void __init plat_fpga_early_init(void) -{ - pr_info("[plat-arcfpga]: registering early dev resources\n"); - -#ifdef CONFIG_ISS_SMP_EXTN - iss_model_init_early_smp(); -#endif -} /*----------------------- Machine Descriptions ------------------------------ * @@ -46,8 +28,8 @@ static const char *legacy_fpga_compat[] __initconst = { MACHINE_START(LEGACY_FPGA, "legacy_fpga") .dt_compat = legacy_fpga_compat, - .init_early = plat_fpga_early_init, #ifdef CONFIG_ISS_SMP_EXTN + .init_early = iss_model_init_early_smp, .init_smp = iss_model_init_smp, #endif MACHINE_END diff --git a/arch/arc/plat-arcfpga/smp.c b/arch/arc/plat-arcfpga/smp.c index 92bad9122077..64797ba3bbe3 100644 --- a/arch/arc/plat-arcfpga/smp.c +++ b/arch/arc/plat-arcfpga/smp.c @@ -13,9 +13,10 @@ #include #include -#include #include +#define IDU_INTERRUPT_0 16 + static char smp_cpuinfo_buf[128]; /* -- cgit v1.2.3 From b4c43b4908fb53c6cd00281f1b19cc54d7791299 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 23 Sep 2014 11:39:04 +0200 Subject: ARC: [arcfpga] Get rid of ARC_BOARD_ANGEL4 and ARC_BOARD_ML509 Commit c00bfd974fb0 ("ARC: [arcfpga] Get rid of legacy BVCI latency unit support") removed the Kconfig symbol ARC_HAS_BVCI_LAT_UNIT. And that symbol's entry was the only place were the symbols ARC_BOARD_ANGEL4 and ARC_BOARD_ML509 were used. So ARC_BOARD_ANGEL4 and ARC_BOARD_ML509 can be removed too. Signed-off-by: Paul Bolle Signed-off-by: Vineet Gupta --- arch/arc/configs/fpga_defconfig | 1 - arch/arc/configs/fpga_noramfs_defconfig | 1 - arch/arc/configs/nsimosci_defconfig | 1 - arch/arc/plat-arcfpga/Kconfig | 11 ----------- 4 files changed, 14 deletions(-) (limited to 'arch') diff --git a/arch/arc/configs/fpga_defconfig b/arch/arc/configs/fpga_defconfig index e283aa586934..ef4d3bc7b6c0 100644 --- a/arch/arc/configs/fpga_defconfig +++ b/arch/arc/configs/fpga_defconfig @@ -23,7 +23,6 @@ CONFIG_MODULES=y # CONFIG_IOSCHED_DEADLINE is not set # CONFIG_IOSCHED_CFQ is not set CONFIG_ARC_PLAT_FPGA_LEGACY=y -CONFIG_ARC_BOARD_ML509=y # CONFIG_ARC_HAS_RTSC is not set CONFIG_ARC_BUILTIN_DTB_NAME="angel4" CONFIG_PREEMPT=y diff --git a/arch/arc/configs/fpga_noramfs_defconfig b/arch/arc/configs/fpga_noramfs_defconfig index 5276a52f6a2f..49c93011ab96 100644 --- a/arch/arc/configs/fpga_noramfs_defconfig +++ b/arch/arc/configs/fpga_noramfs_defconfig @@ -20,7 +20,6 @@ CONFIG_MODULES=y # CONFIG_IOSCHED_DEADLINE is not set # CONFIG_IOSCHED_CFQ is not set CONFIG_ARC_PLAT_FPGA_LEGACY=y -CONFIG_ARC_BOARD_ML509=y # CONFIG_ARC_HAS_RTSC is not set CONFIG_ARC_BUILTIN_DTB_NAME="angel4" CONFIG_PREEMPT=y diff --git a/arch/arc/configs/nsimosci_defconfig b/arch/arc/configs/nsimosci_defconfig index c01ba35a4eff..278dacf2a3f9 100644 --- a/arch/arc/configs/nsimosci_defconfig +++ b/arch/arc/configs/nsimosci_defconfig @@ -21,7 +21,6 @@ CONFIG_MODULES=y # CONFIG_IOSCHED_DEADLINE is not set # CONFIG_IOSCHED_CFQ is not set CONFIG_ARC_PLAT_FPGA_LEGACY=y -CONFIG_ARC_BOARD_ML509=y # CONFIG_ARC_IDE is not set # CONFIG_ARCTANGENT_EMAC is not set # CONFIG_ARC_HAS_RTSC is not set diff --git a/arch/arc/plat-arcfpga/Kconfig b/arch/arc/plat-arcfpga/Kconfig index 4965f9f4ffdc..217593a70751 100644 --- a/arch/arc/plat-arcfpga/Kconfig +++ b/arch/arc/plat-arcfpga/Kconfig @@ -18,17 +18,6 @@ menuconfig ARC_PLAT_FPGA_LEGACY if ARC_PLAT_FPGA_LEGACY -config ARC_BOARD_ANGEL4 - bool "ARC Angel4" - default y - help - ARC Angel4 FPGA Ref Platform (Xilinx Virtex Based) - -config ARC_BOARD_ML509 - bool "ML509" - help - ARC ML509 FPGA Ref Platform (Xilinx Virtex-5 Based) - config ISS_SMP_EXTN bool "ARC SMP Extensions (ISS Models only)" default n -- cgit v1.2.3 From 5c05483e2db91890faa9a7be0a831701a3f442d6 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Fri, 20 Jun 2014 16:24:49 +0530 Subject: ARC: [nsimosci] Allow "headless" models to boot There are certain test configuration of virtual platform which don't have any real console device (uart/pgu). So add tty0 as a fallback console device to allow system to boot and be accessible via telnet Otherwise with ttyS0 as only console, but 8250 disabled in kernel build, init chokes. Reported-by: Anton Kolesov Signed-off-by: Vineet Gupta Cc: #3.10, 3.12, 3.14, 3.16 --- arch/arc/boot/dts/nsimosci.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arc/boot/dts/nsimosci.dts b/arch/arc/boot/dts/nsimosci.dts index 825065d66d65..cfaedd9c61c9 100644 --- a/arch/arc/boot/dts/nsimosci.dts +++ b/arch/arc/boot/dts/nsimosci.dts @@ -20,7 +20,7 @@ /* this is for console on PGU */ /* bootargs = "console=tty0 consoleblank=0"; */ /* this is for console on serial */ - bootargs = "earlycon=uart8250,mmio32,0xc0000000,115200n8 console=ttyS0,115200n8 consoleblank=0 debug"; + bootargs = "earlycon=uart8250,mmio32,0xc0000000,115200n8 console=tty0 console=ttyS0,115200n8 consoleblank=0 debug"; }; aliases { -- cgit v1.2.3 From 1736a56f3d1d5765fa8953d39a900a494d7e415c Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Mon, 8 Sep 2014 11:18:15 +0530 Subject: ARC: rename kconfig option for unaligned emulation Signed-off-by: Vineet Gupta --- arch/arc/Kconfig | 2 +- arch/arc/include/asm/unaligned.h | 2 +- arch/arc/kernel/Makefile | 2 +- arch/arc/kernel/disasm.c | 4 ++-- 4 files changed, 5 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index bf1e410ee448..cdb6b7596c98 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -355,7 +355,7 @@ config ARC_CURR_IN_REG kernel mode. This saves memory access for each such access -config ARC_MISALIGN_ACCESS +config ARC_EMUL_UNALIGNED bool "Emulate unaligned memory access (userspace only)" select SYSCTL_ARCH_UNALIGN_NO_WARN select SYSCTL_ARCH_UNALIGN_ALLOW diff --git a/arch/arc/include/asm/unaligned.h b/arch/arc/include/asm/unaligned.h index 3e5f071bc00c..6da6b4edaeda 100644 --- a/arch/arc/include/asm/unaligned.h +++ b/arch/arc/include/asm/unaligned.h @@ -14,7 +14,7 @@ #include #include -#ifdef CONFIG_ARC_MISALIGN_ACCESS +#ifdef CONFIG_ARC_EMUL_UNALIGNED int misaligned_fixup(unsigned long address, struct pt_regs *regs, struct callee_regs *cregs); #else diff --git a/arch/arc/kernel/Makefile b/arch/arc/kernel/Makefile index 8004b4fa6461..113f2033da9f 100644 --- a/arch/arc/kernel/Makefile +++ b/arch/arc/kernel/Makefile @@ -16,7 +16,7 @@ obj-$(CONFIG_MODULES) += arcksyms.o module.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_ARC_DW2_UNWIND) += unwind.o obj-$(CONFIG_KPROBES) += kprobes.o -obj-$(CONFIG_ARC_MISALIGN_ACCESS) += unaligned.o +obj-$(CONFIG_ARC_EMUL_UNALIGNED) += unaligned.o obj-$(CONFIG_KGDB) += kgdb.o obj-$(CONFIG_ARC_METAWARE_HLINK) += arc_hostlink.o obj-$(CONFIG_PERF_EVENTS) += perf_event.o diff --git a/arch/arc/kernel/disasm.c b/arch/arc/kernel/disasm.c index b8a549c4f540..3b7cd4864ba2 100644 --- a/arch/arc/kernel/disasm.c +++ b/arch/arc/kernel/disasm.c @@ -15,7 +15,7 @@ #include #include -#if defined(CONFIG_KGDB) || defined(CONFIG_ARC_MISALIGN_ACCESS) || \ +#if defined(CONFIG_KGDB) || defined(CONFIG_ARC_EMUL_UNALIGNED) || \ defined(CONFIG_KPROBES) /* disasm_instr: Analyses instruction at addr, stores @@ -535,4 +535,4 @@ int __kprobes disasm_next_pc(unsigned long pc, struct pt_regs *regs, return instr.is_branch; } -#endif /* CONFIG_KGDB || CONFIG_ARC_MISALIGN_ACCESS || CONFIG_KPROBES */ +#endif /* CONFIG_KGDB || CONFIG_ARC_EMUL_UNALIGNED || CONFIG_KPROBES */ -- cgit v1.2.3 From c4aa49df4dca6d41d3a7488cf582a0ab778ad06d Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Fri, 19 Sep 2014 01:28:24 +0530 Subject: ARC: Update comments about uncached address space Suggested-by: Noam Camus Signed-off-by: Vineet Gupta --- arch/arc/include/asm/cache.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arc/include/asm/cache.h b/arch/arc/include/asm/cache.h index b3c750979aa1..7861255da32d 100644 --- a/arch/arc/include/asm/cache.h +++ b/arch/arc/include/asm/cache.h @@ -20,7 +20,7 @@ #define CACHE_LINE_MASK (~(L1_CACHE_BYTES - 1)) /* - * ARC700 doesn't cache any access in top 256M. + * ARC700 doesn't cache any access in top 1G (0xc000_0000 to 0xFFFF_FFFF) * Ideal for wiring memory mapped peripherals as we don't need to do * explicit uncached accesses (LD.di/ST.di) hence more portable drivers */ -- cgit v1.2.3 From 435abb6daf310b4c1d681097887ea7239c310732 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 10 Sep 2014 10:38:10 +0530 Subject: ARC: RIP @running_on_hw * No active users of this flag anymore * flag itself was no longer usable with new simualtor which acts just like hardware, not providing the special chip-id = 0xffff which good old ISS used to do. Signed-off-by: Vineet Gupta --- arch/arc/include/asm/setup.h | 1 - arch/arc/kernel/head.S | 10 ---------- arch/arc/kernel/setup.c | 2 -- 3 files changed, 13 deletions(-) (limited to 'arch') diff --git a/arch/arc/include/asm/setup.h b/arch/arc/include/asm/setup.h index e10f8cef56a8..6e3ef5ba4f74 100644 --- a/arch/arc/include/asm/setup.h +++ b/arch/arc/include/asm/setup.h @@ -29,7 +29,6 @@ struct cpuinfo_data { }; extern int root_mountflags, end_mem; -extern int running_on_hw; void setup_processor(void); void __init setup_arch_memory(void); diff --git a/arch/arc/kernel/head.S b/arch/arc/kernel/head.S index 4d2481bd8b98..b0e8666fdccc 100644 --- a/arch/arc/kernel/head.S +++ b/arch/arc/kernel/head.S @@ -91,16 +91,6 @@ stext: st r0, [@uboot_tag] st r2, [@uboot_arg] - ; Identify if running on ISS vs Silicon - ; IDENTITY Reg [ 3 2 1 0 ] - ; (chip-id) ^^^^^ ==> 0xffff for ISS - lr r0, [identity] - lsr r3, r0, 16 - cmp r3, 0xffff - mov.z r4, 0 - mov.nz r4, 1 - st r4, [@running_on_hw] - ; setup "current" tsk and optionally cache it in dedicated r25 mov r9, @init_task SET_CURR_TASK_ON_CPU r9, r0 ; r9 = tsk, r0 = scratch diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 686e3fae4420..8fccf0328ad0 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -30,8 +30,6 @@ #define FIX_PTR(x) __asm__ __volatile__(";" : "+r"(x)) -int running_on_hw = 1; /* vs. on ISS */ - /* Part of U-boot ABI: see head.S */ int __initdata uboot_tag; char __initdata *uboot_arg; -- cgit v1.2.3 From 68d8feee85dd9ff68a2d740c90b08dc4ae2fb8e5 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Thu, 7 Aug 2014 16:24:47 -0700 Subject: ARC: remove gcc mpy heuristics Signed-off-by: Vineet Gupta --- arch/arc/Makefile | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) (limited to 'arch') diff --git a/arch/arc/Makefile b/arch/arc/Makefile index 8c0b1aa56f7e..10bc3d4e8a44 100644 --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -25,7 +25,6 @@ ifdef CONFIG_ARC_CURR_IN_REG LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h endif -upto_gcc42 := $(call cc-ifversion, -le, 0402, y) upto_gcc44 := $(call cc-ifversion, -le, 0404, y) atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y) atleast_gcc48 := $(call cc-ifversion, -ge, 0408, y) @@ -60,25 +59,11 @@ ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB # --build-id w/o "-marclinux". Default arc-elf32-ld is OK ldflags-$(upto_gcc44) += -marclinux -ARC_LIBGCC := -mA7 -cflags-$(CONFIG_ARC_HAS_HW_MPY) += -multcost=16 - ifndef CONFIG_ARC_HAS_HW_MPY cflags-y += -mno-mpy - -# newlib for ARC700 assumes MPY to be always present, which is generally true -# However, if someone really doesn't want MPY, we need to use the 600 ver -# which coupled with -mno-mpy will use mpy emulation -# With gcc 4.4.7, -mno-mpy is enough to make any other related adjustments, -# e.g. increased cost of MPY. With gcc 4.2.1 this had to be explicitly hinted - - ifeq ($(upto_gcc42),y) - ARC_LIBGCC := -marc600 - cflags-y += -multcost=30 - endif endif -LIBGCC := $(shell $(CC) $(ARC_LIBGCC) $(cflags-y) --print-libgcc-file-name) +LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name) # Modules with short calls might break for calls into builtin-kernel KBUILD_CFLAGS_MODULE += -mlong-calls -- cgit v1.2.3 From c59414cca188e561d450b77e44ad281579946f18 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 24 Sep 2014 11:36:20 +0530 Subject: ARC: refactoring: reduce the scope of some local vars Signed-off-by: Vineet Gupta --- arch/arc/mm/cache_arc700.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) (limited to 'arch') diff --git a/arch/arc/mm/cache_arc700.c b/arch/arc/mm/cache_arc700.c index 9e1142729fd1..8c3a3e02ba92 100644 --- a/arch/arc/mm/cache_arc700.c +++ b/arch/arc/mm/cache_arc700.c @@ -530,16 +530,9 @@ EXPORT_SYMBOL(dma_cache_wback); */ void flush_icache_range(unsigned long kstart, unsigned long kend) { - unsigned int tot_sz, off, sz; - unsigned long phy, pfn; + unsigned int tot_sz; - /* printk("Kernel Cache Cohenercy: %lx to %lx\n",kstart, kend); */ - - /* This is not the right API for user virtual address */ - if (kstart < TASK_SIZE) { - BUG_ON("Flush icache range for user virtual addr space"); - return; - } + WARN(kstart < TASK_SIZE, "%s() can't handle user vaddr", __func__); /* Shortcut for bigger flush ranges. * Here we don't care if this was kernel virtual or phy addr @@ -572,6 +565,9 @@ void flush_icache_range(unsigned long kstart, unsigned long kend) * straddles across 2 virtual pages and hence need for loop */ while (tot_sz > 0) { + unsigned int off, sz; + unsigned long phy, pfn; + off = kstart % PAGE_SIZE; pfn = vmalloc_to_pfn((void *)kstart); phy = (pfn << PAGE_SHIFT) + off; -- cgit v1.2.3 From 3872d05299b5ab58446f484df18f71cab4628c50 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 24 Sep 2014 16:36:48 +0530 Subject: ARC: BUG() dumps stack after @msg (@msg now same as in generic BUG)) ARC specific version (doesn't panic) still makes sense so that generic code calling BUG doesn't panic and helps debugging more Signed-off-by: Vineet Gupta --- arch/arc/include/asm/bug.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/arc/include/asm/bug.h b/arch/arc/include/asm/bug.h index 5b18e94c6678..ea022d47896c 100644 --- a/arch/arc/include/asm/bug.h +++ b/arch/arc/include/asm/bug.h @@ -21,10 +21,9 @@ void show_kernel_fault_diag(const char *str, struct pt_regs *regs, unsigned long address); void die(const char *str, struct pt_regs *regs, unsigned long address); -#define BUG() do { \ - dump_stack(); \ - pr_warn("Kernel BUG in %s: %s: %d!\n", \ - __FILE__, __func__, __LINE__); \ +#define BUG() do { \ + pr_warn("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __func__); \ + dump_stack(); \ } while (0) #define HAVE_ARCH_BUG -- cgit v1.2.3 From cdd4552686b5225047ce24b8449380e02c1481e1 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Wed, 24 Sep 2014 20:32:22 +0200 Subject: ARC: Remove unneeded Kconfig entry NO_DMA Architectures only need a Kconfig entry for NO_DMA if it is possible that its value will be 'y'. For arc its value will always be 'n', making it pointless. Remove it. Signed-off-by: Paul Bolle Signed-off-by: Vineet Gupta --- arch/arc/Kconfig | 3 --- 1 file changed, 3 deletions(-) (limited to 'arch') diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index cdb6b7596c98..fe44b2494609 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -74,9 +74,6 @@ config STACKTRACE_SUPPORT config HAVE_LATENCYTOP_SUPPORT def_bool y -config NO_DMA - def_bool n - source "init/Kconfig" source "kernel/Kconfig.freezer" -- cgit v1.2.3 From ebc0c74e76cec9c4dd860eb0ca1c0b39dc63c482 Mon Sep 17 00:00:00 2001 From: Anton Kolesov Date: Thu, 25 Sep 2014 13:23:24 +0400 Subject: ARC: Update order of registers in KGDB to match GDB 7.5 Order of registers has changed in GDB moving from 6.8 to 7.5. This patch updates KGDB to work properly with GDB 7.5, though makes it incompatible with 6.8. Signed-off-by: Anton Kolesov Signed-off-by: Vineet Gupta Cc: #3.10, 3.12, 3.14, 3.16 --- arch/arc/include/asm/kgdb.h | 32 ++++++++++++++++++-------------- 1 file changed, 18 insertions(+), 14 deletions(-) (limited to 'arch') diff --git a/arch/arc/include/asm/kgdb.h b/arch/arc/include/asm/kgdb.h index b65fca7ffeb5..fea931634136 100644 --- a/arch/arc/include/asm/kgdb.h +++ b/arch/arc/include/asm/kgdb.h @@ -19,7 +19,7 @@ * register API yet */ #undef DBG_MAX_REG_NUM -#define GDB_MAX_REGS 39 +#define GDB_MAX_REGS 87 #define BREAK_INSTR_SIZE 2 #define CACHE_FLUSH_IS_SAFE 1 @@ -33,23 +33,27 @@ static inline void arch_kgdb_breakpoint(void) extern void kgdb_trap(struct pt_regs *regs); -enum arc700_linux_regnums { +/* This is the numbering of registers according to the GDB. See GDB's + * arc-tdep.h for details. + * + * Registers are ordered for GDB 7.5. It is incompatible with GDB 6.8. */ +enum arc_linux_regnums { _R0 = 0, _R1, _R2, _R3, _R4, _R5, _R6, _R7, _R8, _R9, _R10, _R11, _R12, _R13, _R14, _R15, _R16, _R17, _R18, _R19, _R20, _R21, _R22, _R23, _R24, _R25, _R26, - _BTA = 27, - _LP_START = 28, - _LP_END = 29, - _LP_COUNT = 30, - _STATUS32 = 31, - _BLINK = 32, - _FP = 33, - __SP = 34, - _EFA = 35, - _RET = 36, - _ORIG_R8 = 37, - _STOP_PC = 38 + _FP = 27, + __SP = 28, + _R30 = 30, + _BLINK = 31, + _LP_COUNT = 60, + _STOP_PC = 64, + _RET = 64, + _LP_START = 65, + _LP_END = 66, + _STATUS32 = 67, + _ECR = 76, + _BTA = 82, }; #else -- cgit v1.2.3 From be64c997d96dd29029ed40d9df9cbf80fa1c7ed4 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Sat, 27 Sep 2014 12:49:11 +0530 Subject: ARC: remove extraneous __KERNEL__ guards Verified by doing make headers_install as none of these files are exported to userspace --- arch/arc/include/asm/arcregs.h | 4 ---- arch/arc/include/asm/atomic.h | 4 ---- arch/arc/include/asm/bitops.h | 4 ---- arch/arc/include/asm/current.h | 4 ---- arch/arc/include/asm/irqflags.h | 4 ---- arch/arc/include/asm/processor.h | 4 ---- arch/arc/include/asm/string.h | 3 --- arch/arc/include/asm/syscalls.h | 4 ---- arch/arc/include/asm/thread_info.h | 4 ---- 9 files changed, 35 deletions(-) (limited to 'arch') diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h index 372466b371bf..d6d82577cabe 100644 --- a/arch/arc/include/asm/arcregs.h +++ b/arch/arc/include/asm/arcregs.h @@ -9,8 +9,6 @@ #ifndef _ASM_ARC_ARCREGS_H #define _ASM_ARC_ARCREGS_H -#ifdef __KERNEL__ - /* Build Configuration Registers */ #define ARC_REG_DCCMBASE_BCR 0x61 /* DCCM Base Addr */ #define ARC_REG_CRC_BCR 0x62 @@ -321,6 +319,4 @@ extern struct cpuinfo_arc cpuinfo_arc700[]; #endif /* __ASEMBLY__ */ -#endif /* __KERNEL__ */ - #endif /* _ASM_ARC_ARCREGS_H */ diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h index 83f03ca6caf6..6638a0392f4e 100644 --- a/arch/arc/include/asm/atomic.h +++ b/arch/arc/include/asm/atomic.h @@ -9,8 +9,6 @@ #ifndef _ASM_ARC_ATOMIC_H #define _ASM_ARC_ATOMIC_H -#ifdef __KERNEL__ - #ifndef __ASSEMBLY__ #include @@ -228,5 +226,3 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) #endif #endif - -#endif diff --git a/arch/arc/include/asm/bitops.h b/arch/arc/include/asm/bitops.h index ebc0cf3164dc..1a5bf07eefe2 100644 --- a/arch/arc/include/asm/bitops.h +++ b/arch/arc/include/asm/bitops.h @@ -13,8 +13,6 @@ #error only can be included directly #endif -#ifdef __KERNEL__ - #ifndef __ASSEMBLY__ #include @@ -508,6 +506,4 @@ static inline __attribute__ ((const)) int __ffs(unsigned long word) #endif /* !__ASSEMBLY__ */ -#endif /* __KERNEL__ */ - #endif diff --git a/arch/arc/include/asm/current.h b/arch/arc/include/asm/current.h index 87b918585c4a..c2453ee62801 100644 --- a/arch/arc/include/asm/current.h +++ b/arch/arc/include/asm/current.h @@ -12,8 +12,6 @@ #ifndef _ASM_ARC_CURRENT_H #define _ASM_ARC_CURRENT_H -#ifdef __KERNEL__ - #ifndef __ASSEMBLY__ #ifdef CONFIG_ARC_CURR_IN_REG @@ -27,6 +25,4 @@ register struct task_struct *curr_arc asm("r25"); #endif /* ! __ASSEMBLY__ */ -#endif /* __KERNEL__ */ - #endif /* _ASM_ARC_CURRENT_H */ diff --git a/arch/arc/include/asm/irqflags.h b/arch/arc/include/asm/irqflags.h index 587df8236e8b..742816f1b210 100644 --- a/arch/arc/include/asm/irqflags.h +++ b/arch/arc/include/asm/irqflags.h @@ -15,8 +15,6 @@ * -Conditionally disable interrupts (if they are not enabled, don't disable) */ -#ifdef __KERNEL__ - #include /* status32 Reg bits related to Interrupt Handling */ @@ -169,6 +167,4 @@ static inline int arch_irqs_disabled(void) #endif /* __ASSEMBLY__ */ -#endif /* KERNEL */ - #endif diff --git a/arch/arc/include/asm/processor.h b/arch/arc/include/asm/processor.h index 82588f3ba77f..08fbe2e9d4cc 100644 --- a/arch/arc/include/asm/processor.h +++ b/arch/arc/include/asm/processor.h @@ -14,8 +14,6 @@ #ifndef __ASM_ARC_PROCESSOR_H #define __ASM_ARC_PROCESSOR_H -#ifdef __KERNEL__ - #ifndef __ASSEMBLY__ #include @@ -128,6 +126,4 @@ extern unsigned int get_wchan(struct task_struct *p); */ #define TASK_UNMAPPED_BASE (TASK_SIZE / 3) -#endif /* __KERNEL__ */ - #endif /* __ASM_ARC_PROCESSOR_H */ diff --git a/arch/arc/include/asm/string.h b/arch/arc/include/asm/string.h index 87676c8f1412..95822b550a18 100644 --- a/arch/arc/include/asm/string.h +++ b/arch/arc/include/asm/string.h @@ -17,8 +17,6 @@ #include -#ifdef __KERNEL__ - #define __HAVE_ARCH_MEMSET #define __HAVE_ARCH_MEMCPY #define __HAVE_ARCH_MEMCMP @@ -36,5 +34,4 @@ extern char *strcpy(char *dest, const char *src); extern int strcmp(const char *cs, const char *ct); extern __kernel_size_t strlen(const char *); -#endif /* __KERNEL__ */ #endif /* _ASM_ARC_STRING_H */ diff --git a/arch/arc/include/asm/syscalls.h b/arch/arc/include/asm/syscalls.h index dd785befe7fd..e56f9fcc5581 100644 --- a/arch/arc/include/asm/syscalls.h +++ b/arch/arc/include/asm/syscalls.h @@ -9,8 +9,6 @@ #ifndef _ASM_ARC_SYSCALLS_H #define _ASM_ARC_SYSCALLS_H 1 -#ifdef __KERNEL__ - #include #include #include @@ -22,6 +20,4 @@ int sys_arc_gettls(void); #include -#endif /* __KERNEL__ */ - #endif diff --git a/arch/arc/include/asm/thread_info.h b/arch/arc/include/asm/thread_info.h index 45be21672011..02bc5ec0fb2e 100644 --- a/arch/arc/include/asm/thread_info.h +++ b/arch/arc/include/asm/thread_info.h @@ -16,8 +16,6 @@ #ifndef _ASM_THREAD_INFO_H #define _ASM_THREAD_INFO_H -#ifdef __KERNEL__ - #include #ifdef CONFIG_16KSTACKS @@ -114,6 +112,4 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void) * syscall, so all that reamins to be tested is _TIF_WORK_MASK */ -#endif /* __KERNEL__ */ - #endif /* _ASM_THREAD_INFO_H */ -- cgit v1.2.3 From 52e9bae93802bd29c33be11e9e758ad7daac805f Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Sat, 27 Sep 2014 12:53:41 +0530 Subject: ARC: unbork FPU save/restore Fixes: 2ab402dfd65d15a4b2 "ARC: make start_thread() out-of-line" CC: #3.16 Signed-off-by: Vineet Gupta --- arch/arc/include/asm/arcregs.h | 8 -------- arch/arc/include/asm/processor.h | 9 +++++++++ 2 files changed, 9 insertions(+), 8 deletions(-) (limited to 'arch') diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h index d6d82577cabe..3ea5b437bfb9 100644 --- a/arch/arc/include/asm/arcregs.h +++ b/arch/arc/include/asm/arcregs.h @@ -189,14 +189,6 @@ #define PAGES_TO_KB(n_pages) ((n_pages) << (PAGE_SHIFT - 10)) #define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10) -#ifdef CONFIG_ARC_FPU_SAVE_RESTORE -/* These DPFP regs need to be saved/restored across ctx-sw */ -struct arc_fpu { - struct { - unsigned int l, h; - } aux_dpfp[2]; -}; -#endif /* *************************************************************** diff --git a/arch/arc/include/asm/processor.h b/arch/arc/include/asm/processor.h index 08fbe2e9d4cc..210fe97464c3 100644 --- a/arch/arc/include/asm/processor.h +++ b/arch/arc/include/asm/processor.h @@ -18,6 +18,15 @@ #include +#ifdef CONFIG_ARC_FPU_SAVE_RESTORE +/* These DPFP regs need to be saved/restored across ctx-sw */ +struct arc_fpu { + struct { + unsigned int l, h; + } aux_dpfp[2]; +}; +#endif + /* Arch specific stuff which needs to be saved per task. * However these items are not so important so as to earn a place in * struct thread_info -- cgit v1.2.3 From c4b9856b5e1eb6d4f0d226f3c48be208475fc3d7 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Thu, 25 Sep 2014 16:07:44 +0530 Subject: ARC: boot: consolidate cross-checking of h/w and s/w Signed-off-by: Vineet Gupta --- arch/arc/kernel/setup.c | 44 +++++++++++++++----------------------------- 1 file changed, 15 insertions(+), 29 deletions(-) (limited to 'arch') diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 8fccf0328ad0..5a10b63e2283 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -236,10 +236,10 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len) return buf; } -static void arc_chk_ccms(void) +static void arc_chk_core_config(void) { -#if defined(CONFIG_ARC_HAS_DCCM) || defined(CONFIG_ARC_HAS_ICCM) struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()]; + int fpu_enabled; #ifdef CONFIG_ARC_HAS_DCCM /* @@ -257,33 +257,20 @@ static void arc_chk_ccms(void) if (CONFIG_ARC_ICCM_SZ != cpu->iccm.sz) panic("Linux built with incorrect ICCM Size\n"); #endif -#endif -} -/* - * Ensure that FP hardware and kernel config match - * -If hardware contains DPFP, kernel needs to save/restore FPU state - * across context switches - * -If hardware lacks DPFP, but kernel configured to save FPU state then - * kernel trying to access non-existant DPFP regs will crash - * - * We only check for Dbl precision Floating Point, because only DPFP - * hardware has dedicated regs which need to be saved/restored on ctx-sw - * (Single Precision uses core regs), thus kernel is kind of oblivious to it - */ -static void arc_chk_fpu(void) -{ - struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()]; + /* + * FP hardware/software config sanity + * -If hardware contains DPFP, kernel needs to save/restore FPU state + * -If not, it will crash trying to save/restore the non-existant regs + * + * (only DPDP checked since SP has no arch visible regs) + */ + fpu_enabled = IS_ENABLED(CONFIG_ARC_FPU_SAVE_RESTORE); - if (cpu->dpfp.ver) { -#ifndef CONFIG_ARC_FPU_SAVE_RESTORE - pr_warn("DPFP support broken in this kernel...\n"); -#endif - } else { -#ifdef CONFIG_ARC_FPU_SAVE_RESTORE - panic("H/w lacks DPFP support, apps won't work\n"); -#endif - } + if (cpu->dpfp.ver && !fpu_enabled) + pr_warn("CONFIG_ARC_FPU_SAVE_RESTORE needed for working apps\n"); + else if (!cpu->dpfp.ver && fpu_enabled) + panic("FPU non-existent, disable CONFIG_ARC_FPU_SAVE_RESTORE\n"); } /* @@ -304,12 +291,11 @@ void setup_processor(void) arc_mmu_init(); arc_cache_init(); - arc_chk_ccms(); printk(arc_extn_mumbojumbo(cpu_id, str, sizeof(str))); printk(arc_platform_smp_cpuinfo()); - arc_chk_fpu(); + arc_chk_core_config(); } static inline int is_kernel(unsigned long addr) -- cgit v1.2.3 From 56372082533afb859e6d64707859349a2ee171bf Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Thu, 25 Sep 2014 16:54:43 +0530 Subject: ARC: boot: cpu feature print enhancements Signed-off-by: Vineet Gupta --- arch/arc/include/asm/arcregs.h | 77 ++++++++++----- arch/arc/kernel/perf_event.c | 22 ++--- arch/arc/kernel/setup.c | 207 ++++++++++++++++++++++------------------- arch/arc/mm/tlb.c | 8 +- 4 files changed, 176 insertions(+), 138 deletions(-) (limited to 'arch') diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h index 3ea5b437bfb9..be33db8a2ee3 100644 --- a/arch/arc/include/asm/arcregs.h +++ b/arch/arc/include/asm/arcregs.h @@ -12,14 +12,13 @@ /* Build Configuration Registers */ #define ARC_REG_DCCMBASE_BCR 0x61 /* DCCM Base Addr */ #define ARC_REG_CRC_BCR 0x62 -#define ARC_REG_DVFB_BCR 0x64 -#define ARC_REG_EXTARITH_BCR 0x65 #define ARC_REG_VECBASE_BCR 0x68 #define ARC_REG_PERIBASE_BCR 0x69 -#define ARC_REG_FP_BCR 0x6B /* Single-Precision FPU */ -#define ARC_REG_DPFP_BCR 0x6C /* Dbl Precision FPU */ +#define ARC_REG_FP_BCR 0x6B /* ARCompact: Single-Precision FPU */ +#define ARC_REG_DPFP_BCR 0x6C /* ARCompact: Dbl Precision FPU */ #define ARC_REG_DCCM_BCR 0x74 /* DCCM Present + SZ */ #define ARC_REG_TIMERS_BCR 0x75 +#define ARC_REG_AP_BCR 0x76 #define ARC_REG_ICCM_BCR 0x78 #define ARC_REG_XY_MEM_BCR 0x79 #define ARC_REG_MAC_BCR 0x7a @@ -29,6 +28,9 @@ #define ARC_REG_MIXMAX_BCR 0x7e #define ARC_REG_BARREL_BCR 0x7f #define ARC_REG_D_UNCACH_BCR 0x6A +#define ARC_REG_BPU_BCR 0xc0 +#define ARC_REG_ISA_CFG_BCR 0xc1 +#define ARC_REG_SMART_BCR 0xFF /* status32 Bits Positions */ #define STATUS_AE_BIT 5 /* Exception active */ @@ -202,27 +204,19 @@ struct bcr_identity { #endif }; -#define EXTN_SWAP_VALID 0x1 -#define EXTN_NORM_VALID 0x2 -#define EXTN_MINMAX_VALID 0x2 -#define EXTN_BARREL_VALID 0x2 - -struct bcr_extn { +struct bcr_isa { #ifdef CONFIG_CPU_BIG_ENDIAN - unsigned int pad:20, crc:1, ext_arith:2, mul:2, barrel:2, minmax:2, - norm:2, swap:1; + unsigned int pad1:23, atomic1:1, ver:8; #else - unsigned int swap:1, norm:2, minmax:2, barrel:2, mul:2, ext_arith:2, - crc:1, pad:20; + unsigned int ver:8, atomic1:1, pad1:23; #endif }; -/* DSP Options Ref Manual */ -struct bcr_extn_mac_mul { +struct bcr_mpy { #ifdef CONFIG_CPU_BIG_ENDIAN - unsigned int pad:16, type:8, ver:8; + unsigned int pad:8, x1616:8, dsp:4, cycles:2, type:2, ver:8; #else - unsigned int ver:8, type:8, pad:16; + unsigned int ver:8, type:2, cycles:2, dsp:4, x1616:8, pad:8; #endif }; @@ -241,6 +235,7 @@ struct bcr_perip { unsigned int pad:8, sz:8, pad2:8, start:8; #endif }; + struct bcr_iccm { #ifdef CONFIG_CPU_BIG_ENDIAN unsigned int base:16, pad:5, sz:3, ver:8; @@ -267,8 +262,8 @@ struct bcr_dccm { #endif }; -/* Both SP and DP FPU BCRs have same format */ -struct bcr_fp { +/* ARCompact: Both SP and DP FPU BCRs have same format */ +struct bcr_fp_arcompact { #ifdef CONFIG_CPU_BIG_ENDIAN unsigned int fast:1, ver:8; #else @@ -276,6 +271,30 @@ struct bcr_fp { #endif }; +struct bcr_timer { +#ifdef CONFIG_CPU_BIG_ENDIAN + unsigned int pad2:15, rtsc:1, pad1:6, t1:1, t0:1, ver:8; +#else + unsigned int ver:8, t0:1, t1:1, pad1:6, rtsc:1, pad2:15; +#endif +}; + +struct bcr_bpu_arcompact { +#ifdef CONFIG_CPU_BIG_ENDIAN + unsigned int pad2:19, fam:1, pad:2, ent:2, ver:8; +#else + unsigned int ver:8, ent:2, pad:2, fam:1, pad2:19; +#endif +}; + +struct bcr_generic { +#ifdef CONFIG_CPU_BIG_ENDIAN + unsigned int pad:24, ver:8; +#else + unsigned int ver:8, pad:24; +#endif +}; + /* ******************************************************************* * Generic structures to hold build configuration used at runtime @@ -289,6 +308,10 @@ struct cpuinfo_arc_cache { unsigned int sz_k:8, line_len:8, assoc:4, ver:4, alias:1, vipt:1, pad:6; }; +struct cpuinfo_arc_bpu { + unsigned int ver, full, num_cache, num_pred; +}; + struct cpuinfo_arc_ccm { unsigned int base_addr, sz; }; @@ -296,15 +319,21 @@ struct cpuinfo_arc_ccm { struct cpuinfo_arc { struct cpuinfo_arc_cache icache, dcache; struct cpuinfo_arc_mmu mmu; + struct cpuinfo_arc_bpu bpu; struct bcr_identity core; - unsigned int timers; + struct bcr_isa isa; + struct bcr_timer timers; unsigned int vec_base; unsigned int uncached_base; struct cpuinfo_arc_ccm iccm, dccm; - struct bcr_extn extn; + struct { + unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, pad1:3, + fpu_sp:1, fpu_dp:1, pad2:6, + debug:1, ap:1, smart:1, rtt:1, pad3:4, + pad4:8; + } extn; + struct bcr_mpy extn_mpy; struct bcr_extn_xymem extn_xymem; - struct bcr_extn_mac_mul extn_mac_mul; - struct bcr_fp fp, dpfp; }; extern struct cpuinfo_arc cpuinfo_arc700[]; diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c index b9a5685a990e..ae1c485cbc68 100644 --- a/arch/arc/kernel/perf_event.c +++ b/arch/arc/kernel/perf_event.c @@ -244,25 +244,23 @@ static int arc_pmu_device_probe(struct platform_device *pdev) pr_err("This core does not have performance counters!\n"); return -ENODEV; } + BUG_ON(pct_bcr.c > ARC_PMU_MAX_HWEVENTS); - arc_pmu = devm_kzalloc(&pdev->dev, sizeof(struct arc_pmu), - GFP_KERNEL); + READ_BCR(ARC_REG_CC_BUILD, cc_bcr); + if (!cc_bcr.v) { + pr_err("Performance counters exist, but no countable conditions?\n"); + return -ENODEV; + } + + arc_pmu = devm_kzalloc(&pdev->dev, sizeof(struct arc_pmu), GFP_KERNEL); if (!arc_pmu) return -ENOMEM; arc_pmu->n_counters = pct_bcr.c; - BUG_ON(arc_pmu->n_counters > ARC_PMU_MAX_HWEVENTS); - arc_pmu->counter_size = 32 + (pct_bcr.s << 4); - pr_info("ARC PMU found with %d counters of size %d bits\n", - arc_pmu->n_counters, arc_pmu->counter_size); - - READ_BCR(ARC_REG_CC_BUILD, cc_bcr); - - if (!cc_bcr.v) - pr_err("Strange! Performance counters exist, but no countable conditions?\n"); - pr_info("ARC PMU has %d countable conditions\n", cc_bcr.c); + pr_info("ARC perf\t: %d counters (%d bits), %d countable conditions\n", + arc_pmu->n_counters, arc_pmu->counter_size, cc_bcr.c); cc_name.str[8] = 0; for (i = 0; i < PERF_COUNT_HW_MAX; i++) diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 5a10b63e2283..252bf603db9c 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -43,26 +43,26 @@ struct cpuinfo_arc cpuinfo_arc700[NR_CPUS]; static void read_arc_build_cfg_regs(void) { struct bcr_perip uncached_space; + struct bcr_generic bcr; struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()]; FIX_PTR(cpu); READ_BCR(AUX_IDENTITY, cpu->core); + READ_BCR(ARC_REG_ISA_CFG_BCR, cpu->isa); - cpu->timers = read_aux_reg(ARC_REG_TIMERS_BCR); + READ_BCR(ARC_REG_TIMERS_BCR, cpu->timers); cpu->vec_base = read_aux_reg(AUX_INTR_VEC_BASE); READ_BCR(ARC_REG_D_UNCACH_BCR, uncached_space); cpu->uncached_base = uncached_space.start << 24; - cpu->extn.mul = read_aux_reg(ARC_REG_MUL_BCR); - cpu->extn.swap = read_aux_reg(ARC_REG_SWAP_BCR); - cpu->extn.norm = read_aux_reg(ARC_REG_NORM_BCR); - cpu->extn.minmax = read_aux_reg(ARC_REG_MIXMAX_BCR); - cpu->extn.barrel = read_aux_reg(ARC_REG_BARREL_BCR); - READ_BCR(ARC_REG_MAC_BCR, cpu->extn_mac_mul); + READ_BCR(ARC_REG_MUL_BCR, cpu->extn_mpy); - cpu->extn.ext_arith = read_aux_reg(ARC_REG_EXTARITH_BCR); - cpu->extn.crc = read_aux_reg(ARC_REG_CRC_BCR); + cpu->extn.norm = read_aux_reg(ARC_REG_NORM_BCR) > 1 ? 1 : 0; /* 2,3 */ + cpu->extn.barrel = read_aux_reg(ARC_REG_BARREL_BCR) > 1 ? 1 : 0; /* 2,3 */ + cpu->extn.swap = read_aux_reg(ARC_REG_SWAP_BCR) ? 1 : 0; /* 1,3 */ + cpu->extn.crc = read_aux_reg(ARC_REG_CRC_BCR) ? 1 : 0; + cpu->extn.minmax = read_aux_reg(ARC_REG_MIXMAX_BCR) > 1 ? 1 : 0; /* 2 */ /* Note that we read the CCM BCRs independent of kernel config * This is to catch the cases where user doesn't know that @@ -96,43 +96,76 @@ static void read_arc_build_cfg_regs(void) read_decode_mmu_bcr(); read_decode_cache_bcr(); - READ_BCR(ARC_REG_FP_BCR, cpu->fp); - READ_BCR(ARC_REG_DPFP_BCR, cpu->dpfp); + { + struct bcr_fp_arcompact sp, dp; + struct bcr_bpu_arcompact bpu; + + READ_BCR(ARC_REG_FP_BCR, sp); + READ_BCR(ARC_REG_DPFP_BCR, dp); + cpu->extn.fpu_sp = sp.ver ? 1 : 0; + cpu->extn.fpu_dp = dp.ver ? 1 : 0; + + READ_BCR(ARC_REG_BPU_BCR, bpu); + cpu->bpu.ver = bpu.ver; + cpu->bpu.full = bpu.fam ? 1 : 0; + if (bpu.ent) { + cpu->bpu.num_cache = 256 << (bpu.ent - 1); + cpu->bpu.num_pred = 256 << (bpu.ent - 1); + } + } + + READ_BCR(ARC_REG_AP_BCR, bcr); + cpu->extn.ap = bcr.ver ? 1 : 0; + + READ_BCR(ARC_REG_SMART_BCR, bcr); + cpu->extn.smart = bcr.ver ? 1 : 0; + + cpu->extn.debug = cpu->extn.ap | cpu->extn.smart; } static const struct cpuinfo_data arc_cpu_tbl[] = { - { {0x10, "ARCTangent A5"}, 0x1F}, { {0x20, "ARC 600" }, 0x2F}, { {0x30, "ARC 700" }, 0x33}, { {0x34, "ARC 700 R4.10"}, 0x34}, + { {0x35, "ARC 700 R4.11"}, 0x35}, { {0x00, NULL } } }; +#define IS_AVAIL1(v, str) ((v) ? str : "") +#define IS_USED(cfg) (IS_ENABLED(cfg) ? "" : "(not used) ") +#define IS_AVAIL2(v, str, cfg) IS_AVAIL1(v, str), IS_AVAIL1(v, IS_USED(cfg)) + static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len) { - int n = 0; struct cpuinfo_arc *cpu = &cpuinfo_arc700[cpu_id]; struct bcr_identity *core = &cpu->core; const struct cpuinfo_data *tbl; - int be = 0; -#ifdef CONFIG_CPU_BIG_ENDIAN - be = 1; -#endif + char *isa_nm; + int i, be, atomic; + int n = 0; + FIX_PTR(cpu); + { + isa_nm = "ARCompact"; + be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN); + + atomic = cpu->isa.atomic1; + if (!cpu->isa.ver) /* ISA BCR absent, use Kconfig info */ + atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC); + } + n += scnprintf(buf + n, len - n, - "\nARC IDENTITY\t: Family [%#02x]" - " Cpu-id [%#02x] Chip-id [%#4x]\n", - core->family, core->cpu_id, - core->chip_id); + "\nIDENTITY\t: ARCVER [%#02x] ARCNUM [%#02x] CHIPID [%#4x]\n", + core->family, core->cpu_id, core->chip_id); for (tbl = &arc_cpu_tbl[0]; tbl->info.id != 0; tbl++) { if ((core->family >= tbl->info.id) && (core->family <= tbl->up_range)) { n += scnprintf(buf + n, len - n, - "processor\t: %s %s\n", - tbl->info.str, - be ? "[Big Endian]" : ""); + "processor [%d]\t: %s (%s ISA) %s\n", + cpu_id, tbl->info.str, isa_nm, + IS_AVAIL1(be, "[Big-Endian]")); break; } } @@ -144,34 +177,35 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len) (unsigned int)(arc_get_core_freq() / 1000000), (unsigned int)(arc_get_core_freq() / 10000) % 100); - n += scnprintf(buf + n, len - n, "Timers\t\t: %s %s\n", - (cpu->timers & 0x200) ? "TIMER1" : "", - (cpu->timers & 0x100) ? "TIMER0" : ""); + n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ", + IS_AVAIL1(cpu->timers.t0, "Timer0 "), + IS_AVAIL1(cpu->timers.t1, "Timer1 "), + IS_AVAIL2(cpu->timers.rtsc, "64-bit RTSC ", CONFIG_ARC_HAS_RTSC)); - n += scnprintf(buf + n, len - n, "Vect Tbl Base\t: %#x\n", - cpu->vec_base); + n += i = scnprintf(buf + n, len - n, "%s%s", + IS_AVAIL2(atomic, "atomic ", CONFIG_ARC_HAS_LLSC)); - n += scnprintf(buf + n, len - n, "UNCACHED Base\t: %#x\n", - cpu->uncached_base); + if (i) + n += scnprintf(buf + n, len - n, "\n\t\t: "); - return buf; -} + n += scnprintf(buf + n, len - n, "%s%s%s%s%s%s%s%s\n", + IS_AVAIL1(cpu->extn_mpy.ver, "mpy "), + IS_AVAIL1(cpu->extn.norm, "norm "), + IS_AVAIL1(cpu->extn.barrel, "barrel-shift "), + IS_AVAIL1(cpu->extn.swap, "swap "), + IS_AVAIL1(cpu->extn.minmax, "minmax "), + IS_AVAIL1(cpu->extn.crc, "crc "), + IS_AVAIL2(1, "swape", CONFIG_ARC_HAS_SWAPE)); -static const struct id_to_str mul_type_nm[] = { - { 0x0, "N/A"}, - { 0x1, "32x32 (spl Result Reg)" }, - { 0x2, "32x32 (ANY Result Reg)" } -}; + if (cpu->bpu.ver) + n += scnprintf(buf + n, len - n, + "BPU\t\t: %s%s match, cache:%d, Predict Table:%d\n", + IS_AVAIL1(cpu->bpu.full, "full"), + IS_AVAIL1(!cpu->bpu.full, "partial"), + cpu->bpu.num_cache, cpu->bpu.num_pred); -static const struct id_to_str mac_mul_nm[] = { - {0x0, "N/A"}, - {0x1, "N/A"}, - {0x2, "Dual 16 x 16"}, - {0x3, "N/A"}, - {0x4, "32x16"}, - {0x5, "N/A"}, - {0x6, "Dual 16x16 and 32x16"} -}; + return buf; +} static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len) { @@ -179,57 +213,27 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len) struct cpuinfo_arc *cpu = &cpuinfo_arc700[cpu_id]; FIX_PTR(cpu); -#define IS_AVAIL1(var, str) ((var) ? str : "") -#define IS_AVAIL2(var, str) ((var == 0x2) ? str : "") -#define IS_USED(cfg) (IS_ENABLED(cfg) ? "(in-use)" : "(not used)") n += scnprintf(buf + n, len - n, - "Extn [700-Base]\t: %s %s %s %s %s %s\n", - IS_AVAIL2(cpu->extn.norm, "norm,"), - IS_AVAIL2(cpu->extn.barrel, "barrel-shift,"), - IS_AVAIL1(cpu->extn.swap, "swap,"), - IS_AVAIL2(cpu->extn.minmax, "minmax,"), - IS_AVAIL1(cpu->extn.crc, "crc,"), - IS_AVAIL2(cpu->extn.ext_arith, "ext-arith")); - - n += scnprintf(buf + n, len - n, "Extn [700-MPY]\t: %s", - mul_type_nm[cpu->extn.mul].str); - - n += scnprintf(buf + n, len - n, " MAC MPY: %s\n", - mac_mul_nm[cpu->extn_mac_mul.type].str); - - if (cpu->core.family == 0x34) { - n += scnprintf(buf + n, len - n, - "Extn [700-4.10]\t: LLOCK/SCOND %s, SWAPE %s, RTSC %s\n", - IS_USED(CONFIG_ARC_HAS_LLSC), - IS_USED(CONFIG_ARC_HAS_SWAPE), - IS_USED(CONFIG_ARC_HAS_RTSC)); - } - - n += scnprintf(buf + n, len - n, "Extn [CCM]\t: %s", - !(cpu->dccm.sz || cpu->iccm.sz) ? "N/A" : ""); - - if (cpu->dccm.sz) - n += scnprintf(buf + n, len - n, "DCCM: @ %x, %d KB ", - cpu->dccm.base_addr, TO_KB(cpu->dccm.sz)); - - if (cpu->iccm.sz) - n += scnprintf(buf + n, len - n, "ICCM: @ %x, %d KB", + "Vector Table\t: %#x\nUncached Base\t: %#x\n", + cpu->vec_base, cpu->uncached_base); + + if (cpu->extn.fpu_sp || cpu->extn.fpu_dp) + n += scnprintf(buf + n, len - n, "FPU\t\t: %s%s\n", + IS_AVAIL1(cpu->extn.fpu_sp, "SP "), + IS_AVAIL1(cpu->extn.fpu_dp, "DP ")); + + if (cpu->extn.debug) + n += scnprintf(buf + n, len - n, "DEBUG\t\t: %s%s%s\n", + IS_AVAIL1(cpu->extn.ap, "ActionPoint "), + IS_AVAIL1(cpu->extn.smart, "smaRT "), + IS_AVAIL1(cpu->extn.rtt, "RTT ")); + + if (cpu->dccm.sz || cpu->iccm.sz) + n += scnprintf(buf + n, len - n, "Extn [CCM]\t: DCCM @ %x, %d KB / ICCM: @ %x, %d KB\n", + cpu->dccm.base_addr, TO_KB(cpu->dccm.sz), cpu->iccm.base_addr, TO_KB(cpu->iccm.sz)); - n += scnprintf(buf + n, len - n, "\nExtn [FPU]\t: %s", - !(cpu->fp.ver || cpu->dpfp.ver) ? "N/A" : ""); - - if (cpu->fp.ver) - n += scnprintf(buf + n, len - n, "SP [v%d] %s", - cpu->fp.ver, cpu->fp.fast ? "(fast)" : ""); - - if (cpu->dpfp.ver) - n += scnprintf(buf + n, len - n, "DP [v%d] %s", - cpu->dpfp.ver, cpu->dpfp.fast ? "(fast)" : ""); - - n += scnprintf(buf + n, len - n, "\n"); - n += scnprintf(buf + n, len - n, "OS ABI [v3]\t: no-legacy-syscalls\n"); @@ -241,6 +245,15 @@ static void arc_chk_core_config(void) struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()]; int fpu_enabled; + if (!cpu->timers.t0) + panic("Timer0 is not present!\n"); + + if (!cpu->timers.t1) + panic("Timer1 is not present!\n"); + + if (IS_ENABLED(CONFIG_ARC_HAS_RTSC) && !cpu->timers.rtsc) + panic("RTSC is not present\n"); + #ifdef CONFIG_ARC_HAS_DCCM /* * DCCM can be arbit placed in hardware. @@ -267,9 +280,9 @@ static void arc_chk_core_config(void) */ fpu_enabled = IS_ENABLED(CONFIG_ARC_FPU_SAVE_RESTORE); - if (cpu->dpfp.ver && !fpu_enabled) + if (cpu->extn.fpu_dp && !fpu_enabled) pr_warn("CONFIG_ARC_FPU_SAVE_RESTORE needed for working apps\n"); - else if (!cpu->dpfp.ver && fpu_enabled) + else if (!cpu->extn.fpu_dp && fpu_enabled) panic("FPU non-existent, disable CONFIG_ARC_FPU_SAVE_RESTORE\n"); } @@ -405,7 +418,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) seq_printf(m, arc_cpu_mumbojumbo(cpu_id, str, PAGE_SIZE)); - seq_printf(m, "Bogo MIPS : \t%lu.%02lu\n", + seq_printf(m, "Bogo MIPS\t: %lu.%02lu\n", loops_per_jiffy / (500000 / HZ), (loops_per_jiffy / (5000 / HZ)) % 100); diff --git a/arch/arc/mm/tlb.c b/arch/arc/mm/tlb.c index e1acf0ce5647..7f47d2a56f44 100644 --- a/arch/arc/mm/tlb.c +++ b/arch/arc/mm/tlb.c @@ -609,14 +609,12 @@ char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len) int n = 0; struct cpuinfo_arc_mmu *p_mmu = &cpuinfo_arc700[cpu_id].mmu; - n += scnprintf(buf + n, len - n, "ARC700 MMU [v%x]\t: %dk PAGE, ", - p_mmu->ver, TO_KB(p_mmu->pg_sz)); - n += scnprintf(buf + n, len - n, - "J-TLB %d (%dx%d), uDTLB %d, uITLB %d, %s\n", + "MMU [v%x]\t: %dk PAGE, JTLB %d (%dx%d), uDTLB %d, uITLB %d %s\n", + p_mmu->ver, TO_KB(p_mmu->pg_sz), p_mmu->num_tlb, p_mmu->sets, p_mmu->ways, p_mmu->u_dtlb, p_mmu->u_itlb, - IS_ENABLED(CONFIG_ARC_MMU_SASID) ? "SASID" : ""); + IS_ENABLED(CONFIG_ARC_MMU_SASID) ? ",SASID" : ""); return buf; } -- cgit v1.2.3 From bfe9a2cfe91a1c920f152ce5fd0a9ad74b3daf12 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 13 Oct 2014 19:41:38 +1100 Subject: powerpc: Reimplement __get_SP() as a function not a define Li Zhong points out an issue with our current __get_SP() implementation. If ftrace function tracing is enabled (ie -pg profiling using _mcount) we spill a stack frame on 64bit all the time. If a function calls __get_SP() and later calls a function that is tail call optimised, we will pop the stack frame and the value returned by __get_SP() is no longer valid. An example from Li can be found in save_stack_trace -> save_context_stack: c0000000000432c0 <.save_stack_trace>: c0000000000432c0: mflr r0 c0000000000432c4: std r0,16(r1) c0000000000432c8: stdu r1,-128(r1) <-- stack frame for _mcount c0000000000432cc: std r3,112(r1) c0000000000432d0: bl <._mcount> c0000000000432d4: nop c0000000000432d8: mr r4,r1 <-- __get_SP() c0000000000432dc: ld r5,632(r13) c0000000000432e0: ld r3,112(r1) c0000000000432e4: li r6,1 c0000000000432e8: addi r1,r1,128 <-- pop stack frame c0000000000432ec: ld r0,16(r1) c0000000000432f0: mtlr r0 c0000000000432f4: b <.save_context_stack> <-- tail call optimized save_context_stack ends up with a stack pointer below the current one, and it is likely to be scribbled over. Fix this by making __get_SP() a function which returns the callers stack frame. Also replace inline assembly which grabs the stack pointer in save_stack_trace and show_stack with __get_SP(). This also fixes an issue with perf_arch_fetch_caller_regs(). It currently unwinds the stack once, which will skip a valid stack frame on a leaf function. With the __get_SP() fixes in this patch, we never need to unwind the stack frame to get to the first interesting frame. We have to export __get_SP() because perf_arch_fetch_caller_regs() (which is used in modules) calls it from a header file. Reported-by: Li Zhong Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/perf_event.h | 2 +- arch/powerpc/include/asm/reg.h | 3 +-- arch/powerpc/kernel/misc.S | 4 ++++ arch/powerpc/kernel/ppc_ksyms.c | 2 ++ arch/powerpc/kernel/process.c | 2 +- arch/powerpc/kernel/stacktrace.c | 2 +- 6 files changed, 10 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/include/asm/perf_event.h b/arch/powerpc/include/asm/perf_event.h index 0bb23725b1e7..b058568a850d 100644 --- a/arch/powerpc/include/asm/perf_event.h +++ b/arch/powerpc/include/asm/perf_event.h @@ -34,7 +34,7 @@ do { \ (regs)->result = 0; \ (regs)->nip = __ip; \ - (regs)->gpr[1] = *(unsigned long *)__get_SP(); \ + (regs)->gpr[1] = __get_SP(); \ asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \ } while (0) #endif diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index fe3f9488f321..e539d7e71451 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -1265,8 +1265,7 @@ static inline unsigned long mfvtb (void) #define proc_trap() asm volatile("trap") -#define __get_SP() ({unsigned long sp; \ - asm volatile("mr %0,1": "=r" (sp)); sp;}) +extern unsigned long __get_SP(void); extern unsigned long scom970_read(unsigned int address); extern void scom970_write(unsigned int address, unsigned long value); diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S index 7ce26d45777e..120deb713bc8 100644 --- a/arch/powerpc/kernel/misc.S +++ b/arch/powerpc/kernel/misc.S @@ -114,3 +114,7 @@ _GLOBAL(longjmp) mtlr r0 mr r3,r4 blr + +_GLOBAL(__get_SP) + PPC_LL r3,0(r1) + blr diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c index c4dfff6c2719..9d84efbd7b7a 100644 --- a/arch/powerpc/kernel/ppc_ksyms.c +++ b/arch/powerpc/kernel/ppc_ksyms.c @@ -41,3 +41,5 @@ EXPORT_SYMBOL(giveup_spe); #ifdef CONFIG_EPAPR_PARAVIRT EXPORT_SYMBOL(epapr_hypercall_start); #endif + +EXPORT_SYMBOL(__get_SP); diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index aa1df89c8b2a..3cc643988101 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1545,7 +1545,7 @@ void show_stack(struct task_struct *tsk, unsigned long *stack) tsk = current; if (sp == 0) { if (tsk == current) - asm("mr %0,1" : "=r" (sp)); + sp = __get_SP(); else sp = tsk->thread.ksp; } diff --git a/arch/powerpc/kernel/stacktrace.c b/arch/powerpc/kernel/stacktrace.c index 3d30ef1038e5..7f65baec29f6 100644 --- a/arch/powerpc/kernel/stacktrace.c +++ b/arch/powerpc/kernel/stacktrace.c @@ -50,7 +50,7 @@ void save_stack_trace(struct stack_trace *trace) { unsigned long sp; - asm("mr %0,1" : "=r" (sp)); + sp = __get_SP(); save_context_stack(trace, sp, current, 1); } -- cgit v1.2.3 From acf620ecf56cfc4edaffaf158250e128539cdd26 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 13 Oct 2014 19:41:39 +1100 Subject: powerpc: Rename __get_SP() to current_stack_pointer() Michael points out that __get_SP() is a pretty horrible function name. Let's give it a better name. Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/perf_event.h | 2 +- arch/powerpc/include/asm/reg.h | 2 +- arch/powerpc/kernel/irq.c | 2 +- arch/powerpc/kernel/misc.S | 2 +- arch/powerpc/kernel/ppc_ksyms.c | 2 +- arch/powerpc/kernel/process.c | 2 +- arch/powerpc/kernel/stacktrace.c | 2 +- 7 files changed, 7 insertions(+), 7 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/include/asm/perf_event.h b/arch/powerpc/include/asm/perf_event.h index b058568a850d..8bf1b6351716 100644 --- a/arch/powerpc/include/asm/perf_event.h +++ b/arch/powerpc/include/asm/perf_event.h @@ -34,7 +34,7 @@ do { \ (regs)->result = 0; \ (regs)->nip = __ip; \ - (regs)->gpr[1] = __get_SP(); \ + (regs)->gpr[1] = current_stack_pointer(); \ asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \ } while (0) #endif diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index e539d7e71451..c998279bd85b 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -1265,7 +1265,7 @@ static inline unsigned long mfvtb (void) #define proc_trap() asm volatile("trap") -extern unsigned long __get_SP(void); +extern unsigned long current_stack_pointer(void); extern unsigned long scom970_read(unsigned int address); extern void scom970_write(unsigned int address, unsigned long value); diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 8eb857f216c1..c14383575fe8 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -466,7 +466,7 @@ static inline void check_stack_overflow(void) #ifdef CONFIG_DEBUG_STACKOVERFLOW long sp; - sp = __get_SP() & (THREAD_SIZE-1); + sp = current_stack_pointer() & (THREAD_SIZE-1); /* check for stack overflow: is there less than 2KB free? */ if (unlikely(sp < (sizeof(struct thread_info) + 2048))) { diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S index 120deb713bc8..0d432194c018 100644 --- a/arch/powerpc/kernel/misc.S +++ b/arch/powerpc/kernel/misc.S @@ -115,6 +115,6 @@ _GLOBAL(longjmp) mr r3,r4 blr -_GLOBAL(__get_SP) +_GLOBAL(current_stack_pointer) PPC_LL r3,0(r1) blr diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c index 9d84efbd7b7a..202963ee013a 100644 --- a/arch/powerpc/kernel/ppc_ksyms.c +++ b/arch/powerpc/kernel/ppc_ksyms.c @@ -42,4 +42,4 @@ EXPORT_SYMBOL(giveup_spe); EXPORT_SYMBOL(epapr_hypercall_start); #endif -EXPORT_SYMBOL(__get_SP); +EXPORT_SYMBOL(current_stack_pointer); diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 3cc643988101..923cd2daba89 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1545,7 +1545,7 @@ void show_stack(struct task_struct *tsk, unsigned long *stack) tsk = current; if (sp == 0) { if (tsk == current) - sp = __get_SP(); + sp = current_stack_pointer(); else sp = tsk->thread.ksp; } diff --git a/arch/powerpc/kernel/stacktrace.c b/arch/powerpc/kernel/stacktrace.c index 7f65baec29f6..ea43a347a104 100644 --- a/arch/powerpc/kernel/stacktrace.c +++ b/arch/powerpc/kernel/stacktrace.c @@ -50,7 +50,7 @@ void save_stack_trace(struct stack_trace *trace) { unsigned long sp; - sp = __get_SP(); + sp = current_stack_pointer(); save_context_stack(trace, sp, current, 1); } -- cgit v1.2.3 From 4ff52b4dedcd4226cf1f2817eb14e8d733790eae Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 13 Oct 2014 19:41:40 +1100 Subject: powerpc/pseries: Use dump_stack instead of show_stack We can use the simpler dump_stack() instead of show_stack(current, __get_SP()) Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/pseries/iommu.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index de1ec54a2a57..e32e00976a94 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -30,7 +30,6 @@ #include #include #include -#include /* for show_stack */ #include #include #include @@ -168,7 +167,7 @@ static int tce_build_pSeriesLP(struct iommu_table *tbl, long tcenum, printk("\tindex = 0x%llx\n", (u64)tbl->it_index); printk("\ttcenum = 0x%llx\n", (u64)tcenum); printk("\ttce val = 0x%llx\n", tce ); - show_stack(current, (unsigned long *)__get_SP()); + dump_stack(); } tcenum++; @@ -257,7 +256,7 @@ static int tce_buildmulti_pSeriesLP(struct iommu_table *tbl, long tcenum, printk("\tindex = 0x%llx\n", (u64)tbl->it_index); printk("\tnpages = 0x%llx\n", (u64)npages); printk("\ttce[0] val = 0x%llx\n", tcep[0]); - show_stack(current, (unsigned long *)__get_SP()); + dump_stack(); } return ret; } @@ -273,7 +272,7 @@ static void tce_free_pSeriesLP(struct iommu_table *tbl, long tcenum, long npages printk("tce_free_pSeriesLP: plpar_tce_put failed. rc=%lld\n", rc); printk("\tindex = 0x%llx\n", (u64)tbl->it_index); printk("\ttcenum = 0x%llx\n", (u64)tcenum); - show_stack(current, (unsigned long *)__get_SP()); + dump_stack(); } tcenum++; @@ -292,7 +291,7 @@ static void tce_freemulti_pSeriesLP(struct iommu_table *tbl, long tcenum, long n printk("\trc = %lld\n", rc); printk("\tindex = 0x%llx\n", (u64)tbl->it_index); printk("\tnpages = 0x%llx\n", (u64)npages); - show_stack(current, (unsigned long *)__get_SP()); + dump_stack(); } } @@ -307,7 +306,7 @@ static unsigned long tce_get_pSeriesLP(struct iommu_table *tbl, long tcenum) printk("tce_get_pSeriesLP: plpar_tce_get failed. rc=%lld\n", rc); printk("\tindex = 0x%llx\n", (u64)tbl->it_index); printk("\ttcenum = 0x%llx\n", (u64)tcenum); - show_stack(current, (unsigned long *)__get_SP()); + dump_stack(); } return tce_ret; -- cgit v1.2.3 From d6f1e7abdb95a7ea031e7604829e4b5514d7e2c1 Mon Sep 17 00:00:00 2001 From: Bharata B Rao Date: Tue, 16 Sep 2014 15:15:45 -0500 Subject: powerpc/pseries: Make CPU hotplug path endian safe - ibm,rtas-configure-connector should treat the RTAS data as big endian. - Treat ibm,ppc-interrupt-server#s as big-endian when setting smp_processor_id during hotplug. Signed-off-by: Bharata B Rao Signed-off-by: Thomas Falcon Acked-by: Nathan Fontenot Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/pseries/dlpar.c | 22 +++++++++++----------- arch/powerpc/platforms/pseries/hotplug-cpu.c | 4 ++-- arch/powerpc/platforms/pseries/pseries.h | 3 ++- 3 files changed, 15 insertions(+), 14 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c index fdf01b660d59..6ad83bd11fe2 100644 --- a/arch/powerpc/platforms/pseries/dlpar.c +++ b/arch/powerpc/platforms/pseries/dlpar.c @@ -25,11 +25,11 @@ #include struct cc_workarea { - u32 drc_index; - u32 zero; - u32 name_offset; - u32 prop_length; - u32 prop_offset; + __be32 drc_index; + __be32 zero; + __be32 name_offset; + __be32 prop_length; + __be32 prop_offset; }; void dlpar_free_cc_property(struct property *prop) @@ -49,11 +49,11 @@ static struct property *dlpar_parse_cc_property(struct cc_workarea *ccwa) if (!prop) return NULL; - name = (char *)ccwa + ccwa->name_offset; + name = (char *)ccwa + be32_to_cpu(ccwa->name_offset); prop->name = kstrdup(name, GFP_KERNEL); - prop->length = ccwa->prop_length; - value = (char *)ccwa + ccwa->prop_offset; + prop->length = be32_to_cpu(ccwa->prop_length); + value = (char *)ccwa + be32_to_cpu(ccwa->prop_offset); prop->value = kmemdup(value, prop->length, GFP_KERNEL); if (!prop->value) { dlpar_free_cc_property(prop); @@ -79,7 +79,7 @@ static struct device_node *dlpar_parse_cc_node(struct cc_workarea *ccwa, if (!dn) return NULL; - name = (char *)ccwa + ccwa->name_offset; + name = (char *)ccwa + be32_to_cpu(ccwa->name_offset); dn->full_name = kasprintf(GFP_KERNEL, "%s/%s", path, name); if (!dn->full_name) { kfree(dn); @@ -126,7 +126,7 @@ void dlpar_free_cc_nodes(struct device_node *dn) #define CALL_AGAIN -2 #define ERR_CFG_USE -9003 -struct device_node *dlpar_configure_connector(u32 drc_index, +struct device_node *dlpar_configure_connector(__be32 drc_index, struct device_node *parent) { struct device_node *dn; @@ -414,7 +414,7 @@ static ssize_t dlpar_cpu_probe(const char *buf, size_t count) if (!parent) return -ENODEV; - dn = dlpar_configure_connector(drc_index, parent); + dn = dlpar_configure_connector(cpu_to_be32(drc_index), parent); if (!dn) return -EINVAL; diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index b174fa751d26..5c375f93c669 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -247,7 +247,7 @@ static int pseries_add_processor(struct device_node *np) unsigned int cpu; cpumask_var_t candidate_mask, tmp; int err = -ENOSPC, len, nthreads, i; - const u32 *intserv; + const __be32 *intserv; intserv = of_get_property(np, "ibm,ppc-interrupt-server#s", &len); if (!intserv) @@ -293,7 +293,7 @@ static int pseries_add_processor(struct device_node *np) for_each_cpu(cpu, tmp) { BUG_ON(cpu_present(cpu)); set_cpu_present(cpu, true); - set_hard_smp_processor_id(cpu, *intserv++); + set_hard_smp_processor_id(cpu, be32_to_cpu(*intserv++)); } err = 0; out_unlock: diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/platforms/pseries/pseries.h index 361add62abf1..1796c5438cc6 100644 --- a/arch/powerpc/platforms/pseries/pseries.h +++ b/arch/powerpc/platforms/pseries/pseries.h @@ -56,7 +56,8 @@ extern void hvc_vio_init_early(void); /* Dynamic logical Partitioning/Mobility */ extern void dlpar_free_cc_nodes(struct device_node *); extern void dlpar_free_cc_property(struct property *); -extern struct device_node *dlpar_configure_connector(u32, struct device_node *); +extern struct device_node *dlpar_configure_connector(__be32, + struct device_node *); extern int dlpar_attach_node(struct device_node *); extern int dlpar_detach_node(struct device_node *); -- cgit v1.2.3 From 8315070c07e7ef5f58ce9e317dc91fd727ecd419 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Wed, 1 Oct 2014 17:07:49 +1000 Subject: powerpc/eeh: Fix condition for isolated state Function eeh_pe_state_mark() could possibly have combination of multiple EEH PE state as its argument. The patch fixes the condition used to check if EEH_PE_ISOLATED is included. Signed-off-by: Gavin Shan Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/eeh_pe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c index 53dd0915e690..37f21284809c 100644 --- a/arch/powerpc/kernel/eeh_pe.c +++ b/arch/powerpc/kernel/eeh_pe.c @@ -525,7 +525,7 @@ static void *__eeh_pe_state_mark(void *data, void *flag) pe->state |= state; /* Offline PCI devices if applicable */ - if (state != EEH_PE_ISOLATED) + if (!(state & EEH_PE_ISOLATED)) return NULL; eeh_pe_for_each_dev(pe, edev, tmp) { -- cgit v1.2.3 From 8a6b3710ccc33da1fd5c85144ad3db01c4457552 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Wed, 1 Oct 2014 17:07:50 +1000 Subject: powerpc/eeh: Rename flag EEH_PE_RESET to EEH_PE_CFG_BLOCKED The flag EEH_PE_RESET indicates blocking config space of the PE during reset time. We potentially need block PE's config space other than reset time. So it's reasonable to replace it with EEH_PE_CFG_BLOCKED to indicate its usage. There are no substantial code or logic changes in this patch. Signed-off-by: Gavin Shan Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/eeh.h | 2 +- arch/powerpc/kernel/eeh.c | 12 ++++++------ arch/powerpc/kernel/eeh_driver.c | 12 ++++++------ arch/powerpc/kernel/rtas_pci.c | 4 ++-- arch/powerpc/platforms/powernv/eeh-ioda.c | 2 +- arch/powerpc/platforms/powernv/pci.c | 2 +- 6 files changed, 17 insertions(+), 17 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h index 3b260efbfbf9..6a2ad90e6d8c 100644 --- a/arch/powerpc/include/asm/eeh.h +++ b/arch/powerpc/include/asm/eeh.h @@ -71,7 +71,7 @@ struct device_node; #define EEH_PE_ISOLATED (1 << 0) /* Isolated PE */ #define EEH_PE_RECOVERING (1 << 1) /* Recovering PE */ -#define EEH_PE_RESET (1 << 2) /* PE reset in progress */ +#define EEH_PE_CFG_BLOCKED (1 << 2) /* Block config access */ #define EEH_PE_KEEP (1 << 8) /* Keep PE on hotplug */ diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index d543e4179c18..4d83f50cc614 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -673,18 +673,18 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state stat switch (state) { case pcie_deassert_reset: eeh_ops->reset(pe, EEH_RESET_DEACTIVATE); - eeh_pe_state_clear(pe, EEH_PE_RESET); + eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED); break; case pcie_hot_reset: - eeh_pe_state_mark(pe, EEH_PE_RESET); + eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED); eeh_ops->reset(pe, EEH_RESET_HOT); break; case pcie_warm_reset: - eeh_pe_state_mark(pe, EEH_PE_RESET); + eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED); eeh_ops->reset(pe, EEH_RESET_FUNDAMENTAL); break; default: - eeh_pe_state_clear(pe, EEH_PE_RESET); + eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED); return -EINVAL; }; @@ -1523,7 +1523,7 @@ int eeh_pe_reset(struct eeh_pe *pe, int option) switch (option) { case EEH_RESET_DEACTIVATE: ret = eeh_ops->reset(pe, option); - eeh_pe_state_clear(pe, EEH_PE_RESET); + eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED); if (ret) break; @@ -1538,7 +1538,7 @@ int eeh_pe_reset(struct eeh_pe *pe, int option) */ eeh_ops->set_option(pe, EEH_OPT_FREEZE_PE); - eeh_pe_state_mark(pe, EEH_PE_RESET); + eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED); ret = eeh_ops->reset(pe, option); break; default: diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c index 3fd514f8e4b2..6535936bdf27 100644 --- a/arch/powerpc/kernel/eeh_driver.c +++ b/arch/powerpc/kernel/eeh_driver.c @@ -528,13 +528,13 @@ int eeh_pe_reset_and_recover(struct eeh_pe *pe) eeh_pe_dev_traverse(pe, eeh_report_error, &result); /* Issue reset */ - eeh_pe_state_mark(pe, EEH_PE_RESET); + eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED); ret = eeh_reset_pe(pe); if (ret) { - eeh_pe_state_clear(pe, EEH_PE_RECOVERING | EEH_PE_RESET); + eeh_pe_state_clear(pe, EEH_PE_RECOVERING | EEH_PE_CFG_BLOCKED); return ret; } - eeh_pe_state_clear(pe, EEH_PE_RESET); + eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED); /* Unfreeze the PE */ ret = eeh_clear_pe_frozen_state(pe, true); @@ -601,10 +601,10 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus) * config accesses. So we prefer to block them. However, controlled * PCI config accesses initiated from EEH itself are allowed. */ - eeh_pe_state_mark(pe, EEH_PE_RESET); + eeh_pe_state_mark(pe, EEH_PE_CFG_BLOCKED); rc = eeh_reset_pe(pe); if (rc) { - eeh_pe_state_clear(pe, EEH_PE_RESET); + eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED); return rc; } @@ -613,7 +613,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus) /* Restore PE */ eeh_ops->configure_bridge(pe); eeh_pe_restore_bars(pe); - eeh_pe_state_clear(pe, EEH_PE_RESET); + eeh_pe_state_clear(pe, EEH_PE_CFG_BLOCKED); /* Clear frozen state */ rc = eeh_clear_pe_frozen_state(pe, false); diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c index c168337aef9d..ce7c8b6a8602 100644 --- a/arch/powerpc/kernel/rtas_pci.c +++ b/arch/powerpc/kernel/rtas_pci.c @@ -111,7 +111,7 @@ static int rtas_pci_read_config(struct pci_bus *bus, return PCIBIOS_DEVICE_NOT_FOUND; #ifdef CONFIG_EEH edev = of_node_to_eeh_dev(dn); - if (edev && edev->pe && edev->pe->state & EEH_PE_RESET) + if (edev && edev->pe && edev->pe->state & EEH_PE_CFG_BLOCKED) return PCIBIOS_DEVICE_NOT_FOUND; #endif @@ -175,7 +175,7 @@ static int rtas_pci_write_config(struct pci_bus *bus, return PCIBIOS_DEVICE_NOT_FOUND; #ifdef CONFIG_EEH edev = of_node_to_eeh_dev(dn); - if (edev && edev->pe && (edev->pe->state & EEH_PE_RESET)) + if (edev && edev->pe && (edev->pe->state & EEH_PE_CFG_BLOCKED)) return PCIBIOS_DEVICE_NOT_FOUND; #endif ret = rtas_write_config(pdn, where, size, val); diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c index 426814a2ede3..eba9cb10619c 100644 --- a/arch/powerpc/platforms/powernv/eeh-ioda.c +++ b/arch/powerpc/platforms/powernv/eeh-ioda.c @@ -373,7 +373,7 @@ static int ioda_eeh_get_pe_state(struct eeh_pe *pe) * moving forward, we have to return operational * state during PE reset. */ - if (pe->state & EEH_PE_RESET) { + if (pe->state & EEH_PE_CFG_BLOCKED) { result = (EEH_STATE_MMIO_ACTIVE | EEH_STATE_DMA_ACTIVE | EEH_STATE_MMIO_ENABLED | diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index e9f509bbc078..b1b7ac2d494f 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -513,7 +513,7 @@ static bool pnv_pci_cfg_check(struct pci_controller *hose, edev = of_node_to_eeh_dev(dn); if (edev) { if (edev->pe && - (edev->pe->state & EEH_PE_RESET)) + (edev->pe->state & EEH_PE_CFG_BLOCKED)) return false; if (edev->mode & EEH_DEV_REMOVED) -- cgit v1.2.3 From d2cfbcd7c8136bc4d944eb64f7f0479dd2b129b8 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Wed, 1 Oct 2014 17:07:51 +1000 Subject: powerpc/powernv: Drop config requests in EEH accessors It's bad idea to access the PCI config registers of the adapters, which is experiencing reset. It leads to recursive EEH error without exception. The patch drops PCI config requests in EEH accessors if the PE has been marked to accept PCI config requests, for example during PE reseet time. Signed-off-by: Gavin Shan Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/eeh-powernv.c | 37 ++++++++++++++++++++++++++-- 1 file changed, 35 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c index 3e89cbf55885..04e42f78a37a 100644 --- a/arch/powerpc/platforms/powernv/eeh-powernv.c +++ b/arch/powerpc/platforms/powernv/eeh-powernv.c @@ -383,6 +383,39 @@ static int powernv_eeh_err_inject(struct eeh_pe *pe, int type, int func, return ret; } +static inline bool powernv_eeh_cfg_blocked(struct device_node *dn) +{ + struct eeh_dev *edev = of_node_to_eeh_dev(dn); + + if (!edev || !edev->pe) + return false; + + if (edev->pe->state & EEH_PE_CFG_BLOCKED) + return true; + + return false; +} + +static int powernv_eeh_read_config(struct device_node *dn, + int where, int size, u32 *val) +{ + if (powernv_eeh_cfg_blocked(dn)) { + *val = 0xFFFFFFFF; + return PCIBIOS_SET_FAILED; + } + + return pnv_pci_cfg_read(dn, where, size, val); +} + +static int powernv_eeh_write_config(struct device_node *dn, + int where, int size, u32 val) +{ + if (powernv_eeh_cfg_blocked(dn)) + return PCIBIOS_SET_FAILED; + + return pnv_pci_cfg_write(dn, where, size, val); +} + /** * powernv_eeh_next_error - Retrieve next EEH error to handle * @pe: Affected PE @@ -440,8 +473,8 @@ static struct eeh_ops powernv_eeh_ops = { .get_log = powernv_eeh_get_log, .configure_bridge = powernv_eeh_configure_bridge, .err_inject = powernv_eeh_err_inject, - .read_config = pnv_pci_cfg_read, - .write_config = pnv_pci_cfg_write, + .read_config = powernv_eeh_read_config, + .write_config = powernv_eeh_write_config, .next_error = powernv_eeh_next_error, .restore_config = powernv_eeh_restore_config }; -- cgit v1.2.3 From 3409eb4e69e1150202bc4ec61801115da32aa380 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Wed, 1 Oct 2014 17:07:52 +1000 Subject: powerpc/pseries: Drop config requests in EEH accessors The pSeires EEH config accessors rely on rtas_{read, write}_config() and the condition to check if the PE's config space is blocked should be moved to those 2 functions so that config requests from kernel, userland, EEH core can be dropped to avoid recursive EEH error if necessary. Signed-off-by: Gavin Shan Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/rtas_pci.c | 30 +++++++++++------------------- 1 file changed, 11 insertions(+), 19 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c index ce7c8b6a8602..7c55b86206b3 100644 --- a/arch/powerpc/kernel/rtas_pci.c +++ b/arch/powerpc/kernel/rtas_pci.c @@ -66,6 +66,11 @@ int rtas_read_config(struct pci_dn *pdn, int where, int size, u32 *val) return PCIBIOS_DEVICE_NOT_FOUND; if (!config_access_valid(pdn, where)) return PCIBIOS_BAD_REGISTER_NUMBER; +#ifdef CONFIG_EEH + if (pdn->edev && pdn->edev->pe && + (pdn->edev->pe->state & EEH_PE_CFG_BLOCKED)) + return PCIBIOS_SET_FAILED; +#endif addr = rtas_config_addr(pdn->busno, pdn->devfn, where); buid = pdn->phb->buid; @@ -90,9 +95,6 @@ static int rtas_pci_read_config(struct pci_bus *bus, struct device_node *busdn, *dn; struct pci_dn *pdn; bool found = false; -#ifdef CONFIG_EEH - struct eeh_dev *edev; -#endif int ret; /* Search only direct children of the bus */ @@ -109,11 +111,6 @@ static int rtas_pci_read_config(struct pci_bus *bus, if (!found) return PCIBIOS_DEVICE_NOT_FOUND; -#ifdef CONFIG_EEH - edev = of_node_to_eeh_dev(dn); - if (edev && edev->pe && edev->pe->state & EEH_PE_CFG_BLOCKED) - return PCIBIOS_DEVICE_NOT_FOUND; -#endif ret = rtas_read_config(pdn, where, size, val); if (*val == EEH_IO_ERROR_VALUE(size) && @@ -132,6 +129,11 @@ int rtas_write_config(struct pci_dn *pdn, int where, int size, u32 val) return PCIBIOS_DEVICE_NOT_FOUND; if (!config_access_valid(pdn, where)) return PCIBIOS_BAD_REGISTER_NUMBER; +#ifdef CONFIG_EEH + if (pdn->edev && pdn->edev->pe && + (pdn->edev->pe->state & EEH_PE_CFG_BLOCKED)) + return PCIBIOS_SET_FAILED; +#endif addr = rtas_config_addr(pdn->busno, pdn->devfn, where); buid = pdn->phb->buid; @@ -155,10 +157,6 @@ static int rtas_pci_write_config(struct pci_bus *bus, struct device_node *busdn, *dn; struct pci_dn *pdn; bool found = false; -#ifdef CONFIG_EEH - struct eeh_dev *edev; -#endif - int ret; /* Search only direct children of the bus */ busdn = pci_bus_to_OF_node(bus); @@ -173,14 +171,8 @@ static int rtas_pci_write_config(struct pci_bus *bus, if (!found) return PCIBIOS_DEVICE_NOT_FOUND; -#ifdef CONFIG_EEH - edev = of_node_to_eeh_dev(dn); - if (edev && edev->pe && (edev->pe->state & EEH_PE_CFG_BLOCKED)) - return PCIBIOS_DEVICE_NOT_FOUND; -#endif - ret = rtas_write_config(pdn, where, size, val); - return ret; + return rtas_write_config(pdn, where, size, val); } static struct pci_ops rtas_pci_ops = { -- cgit v1.2.3 From b6541db1395298b326ae1bf59fae6fbb2c6e8f77 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Wed, 1 Oct 2014 17:07:53 +1000 Subject: powerpc/eeh: Block PCI config access upon frozen PE The problem was found when I tried to inject PCI config error by PHB3 PAPR error injection registers into Broadcom Austin 4-ports NIC adapter. The frozen PE was reported successfully and EEH core started to recover it. However, I run into fenced PHB when dumping PCI config space as EEH logs. I was told that PCI config requests should not be progagated to the adapter until PE reset is done successfully. Otherise, we would run out of PHB internal credits and trigger PCT (PCIE Completion Timeout), which leads to the fenced PHB. The patch introduces another PE flag EEH_PE_CFG_RESTRICTED, which is set during PE initialization time if the PE includes the specific PCI devices that need block PCI config access until PE reset is done. When the PE becomes frozen for the first time, EEH_PE_CFG_BLOCKED is set if the PE has flag EEH_PE_CFG_RESTRICTED. Then the PCI config access to the PE will be dropped by platform PCI accessors until PE reset is done successfully. The mechanism is shared by PowerNV platform owned PE or userland owned ones. It's not used on pSeries platform yet. Signed-off-by: Gavin Shan Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/eeh.h | 1 + arch/powerpc/kernel/eeh_pe.c | 8 ++++++++ arch/powerpc/platforms/powernv/eeh-powernv.c | 19 +++++++++++++++++++ 3 files changed, 28 insertions(+) (limited to 'arch') diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h index 6a2ad90e6d8c..ca07f9c27335 100644 --- a/arch/powerpc/include/asm/eeh.h +++ b/arch/powerpc/include/asm/eeh.h @@ -74,6 +74,7 @@ struct device_node; #define EEH_PE_CFG_BLOCKED (1 << 2) /* Block config access */ #define EEH_PE_KEEP (1 << 8) /* Keep PE on hotplug */ +#define EEH_PE_CFG_RESTRICTED (1 << 9) /* Block config on error */ struct eeh_pe { int type; /* PE type: PHB/Bus/Device */ diff --git a/arch/powerpc/kernel/eeh_pe.c b/arch/powerpc/kernel/eeh_pe.c index 37f21284809c..5a63e2b0f65b 100644 --- a/arch/powerpc/kernel/eeh_pe.c +++ b/arch/powerpc/kernel/eeh_pe.c @@ -534,6 +534,10 @@ static void *__eeh_pe_state_mark(void *data, void *flag) pdev->error_state = pci_channel_io_frozen; } + /* Block PCI config access if required */ + if (pe->state & EEH_PE_CFG_RESTRICTED) + pe->state |= EEH_PE_CFG_BLOCKED; + return NULL; } @@ -611,6 +615,10 @@ static void *__eeh_pe_state_clear(void *data, void *flag) pdev->error_state = pci_channel_io_normal; } + /* Unblock PCI config access if required */ + if (pe->state & EEH_PE_CFG_RESTRICTED) + pe->state &= ~EEH_PE_CFG_BLOCKED; + return NULL; } diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c index 04e42f78a37a..443ce965a5b0 100644 --- a/arch/powerpc/platforms/powernv/eeh-powernv.c +++ b/arch/powerpc/platforms/powernv/eeh-powernv.c @@ -168,6 +168,25 @@ static int powernv_eeh_dev_probe(struct pci_dev *dev, void *flag) return ret; } + /* + * If the PE contains any one of following adapters, the + * PCI config space can't be accessed when dumping EEH log. + * Otherwise, we will run into fenced PHB caused by shortage + * of outbound credits in the adapter. The PCI config access + * should be blocked until PE reset. MMIO access is dropped + * by hardware certainly. In order to drop PCI config requests, + * one more flag (EEH_PE_CFG_RESTRICTED) is introduced, which + * will be checked in the backend for PE state retrival. If + * the PE becomes frozen for the first time and the flag has + * been set for the PE, we will set EEH_PE_CFG_BLOCKED for + * that PE to block its config space. + * + * Broadcom Austin 4-ports NICs (14e4:1657) + */ + if (dev->vendor == PCI_VENDOR_ID_BROADCOM && + dev->device == 0x1657) + edev->pe->state |= EEH_PE_CFG_RESTRICTED; + /* * Cache the PE primary bus, which can't be fetched when * full hotplug is in progress. In that case, all child -- cgit v1.2.3 From c59004cc83c3f8b182c32ca9d366d222a59ab63f Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Wed, 1 Oct 2014 17:07:54 +1000 Subject: powerpc/eeh: Don't collect logs on PE with blocked config space When the PE's config space is marked as blocked, PCI config read requests always return 0xFF's. It's pointless to collect logs in this case. Signed-off-by: Gavin Shan Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/eeh.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch') diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index 4d83f50cc614..2248a1999c64 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -257,6 +257,13 @@ static void *eeh_dump_pe_log(void *data, void *flag) struct eeh_dev *edev, *tmp; size_t *plen = flag; + /* If the PE's config space is blocked, 0xFF's will be + * returned. It's pointless to collect the log in this + * case. + */ + if (pe->state & EEH_PE_CFG_BLOCKED) + return NULL; + eeh_pe_for_each_dev(pe, edev, tmp) *plen += eeh_dump_dev_log(edev, pci_regs_buf + *plen, EEH_PCI_REGS_LOG_LEN - *plen); -- cgit v1.2.3 From 179ea48bc7c04dba3526d66d9f358c2f4f3b3776 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Fri, 3 Oct 2014 14:58:32 +1000 Subject: powerpc/eeh: Block CFG upon frozen Shiner adapter The Broadcom Shiner 2-ports 10G ethernet adapter has same problem commit 6f20bda0 ("powerpc/eeh: Block PCI config access upon frozen PE") fixes. Put it to the black list as well. # lspci -s 0004:01:00.0 0004:01:00.0 Ethernet controller: Broadcom Corporation \ NetXtreme II BCM57810 10 Gigabit Ethernet (rev 10) # lspci -n -s 0004:01:00.0 0004:01:00.0 0200: 14e4:168e (rev 10) Reported-by: John Walthour Signed-off-by: Gavin Shan Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/eeh-powernv.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c index 443ce965a5b0..1d19e7917d7f 100644 --- a/arch/powerpc/platforms/powernv/eeh-powernv.c +++ b/arch/powerpc/platforms/powernv/eeh-powernv.c @@ -182,9 +182,10 @@ static int powernv_eeh_dev_probe(struct pci_dev *dev, void *flag) * that PE to block its config space. * * Broadcom Austin 4-ports NICs (14e4:1657) + * Broadcom Shiner 2-ports 10G NICs (14e4:168e) */ - if (dev->vendor == PCI_VENDOR_ID_BROADCOM && - dev->device == 0x1657) + if ((dev->vendor == PCI_VENDOR_ID_BROADCOM && dev->device == 0x1657) || + (dev->vendor == PCI_VENDOR_ID_BROADCOM && dev->device == 0x168e)) edev->pe->state |= EEH_PE_CFG_RESTRICTED; /* -- cgit v1.2.3 From 695911fb1f0e00aebe6c5636b9c08bf0fd51a2fd Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Fri, 10 Oct 2014 19:04:24 +1100 Subject: powerpc/msi: Fix the msi bitmap alignment tests When we added the alignment tests recently we failed to check they were actually passing - oops. They weren't passing, because the bitmap was full. We should also be a bit more careful when checking the return code, a negative error return could by divisible by our alignment value. Fixes: b0345bbc6d09 ("powerpc/msi: Improve IRQ bitmap allocator") Signed-off-by: Michael Ellerman --- arch/powerpc/sysdev/msi_bitmap.c | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/sysdev/msi_bitmap.c b/arch/powerpc/sysdev/msi_bitmap.c index 0c75214b6f92..8155d93dee1d 100644 --- a/arch/powerpc/sysdev/msi_bitmap.c +++ b/arch/powerpc/sysdev/msi_bitmap.c @@ -151,7 +151,7 @@ void msi_bitmap_free(struct msi_bitmap *bmp) static void __init test_basics(void) { struct msi_bitmap bmp; - int i, size = 512; + int rc, i, size = 512; /* Can't allocate a bitmap of 0 irqs */ check(msi_bitmap_alloc(&bmp, 0, NULL) != 0); @@ -185,14 +185,24 @@ static void __init test_basics(void) msi_bitmap_free_hwirqs(&bmp, size / 2, 1); check(msi_bitmap_alloc_hwirqs(&bmp, 1) == size / 2); + /* Free most of them for the alignment tests */ + msi_bitmap_free_hwirqs(&bmp, 3, size - 3); + /* Check we get a naturally aligned offset */ - check(msi_bitmap_alloc_hwirqs(&bmp, 2) % 2 == 0); - check(msi_bitmap_alloc_hwirqs(&bmp, 4) % 4 == 0); - check(msi_bitmap_alloc_hwirqs(&bmp, 8) % 8 == 0); - check(msi_bitmap_alloc_hwirqs(&bmp, 9) % 16 == 0); - check(msi_bitmap_alloc_hwirqs(&bmp, 3) % 4 == 0); - check(msi_bitmap_alloc_hwirqs(&bmp, 7) % 8 == 0); - check(msi_bitmap_alloc_hwirqs(&bmp, 121) % 128 == 0); + rc = msi_bitmap_alloc_hwirqs(&bmp, 2); + check(rc >= 0 && rc % 2 == 0); + rc = msi_bitmap_alloc_hwirqs(&bmp, 4); + check(rc >= 0 && rc % 4 == 0); + rc = msi_bitmap_alloc_hwirqs(&bmp, 8); + check(rc >= 0 && rc % 8 == 0); + rc = msi_bitmap_alloc_hwirqs(&bmp, 9); + check(rc >= 0 && rc % 16 == 0); + rc = msi_bitmap_alloc_hwirqs(&bmp, 3); + check(rc >= 0 && rc % 4 == 0); + rc = msi_bitmap_alloc_hwirqs(&bmp, 7); + check(rc >= 0 && rc % 8 == 0); + rc = msi_bitmap_alloc_hwirqs(&bmp, 121); + check(rc >= 0 && rc % 128 == 0); msi_bitmap_free(&bmp); -- cgit v1.2.3 From 4a77f2bdbdef289a02bd02fac483a9350e039705 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Fri, 10 Oct 2014 19:04:25 +1100 Subject: powerpc/msi: Use WARN_ON() in msi bitmap selftests As demonstrated in the previous commit, the failure message from the msi bitmap selftests is a bit subtle, it's easy to miss a failure in a busy boot log. So drop our check() macro and use WARN_ON() instead. This necessitates inverting all the conditions as well. Signed-off-by: Michael Ellerman --- arch/powerpc/sysdev/msi_bitmap.c | 54 ++++++++++++++++++---------------------- 1 file changed, 24 insertions(+), 30 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/sysdev/msi_bitmap.c b/arch/powerpc/sysdev/msi_bitmap.c index 8155d93dee1d..73b64c73505b 100644 --- a/arch/powerpc/sysdev/msi_bitmap.c +++ b/arch/powerpc/sysdev/msi_bitmap.c @@ -145,69 +145,64 @@ void msi_bitmap_free(struct msi_bitmap *bmp) #ifdef CONFIG_MSI_BITMAP_SELFTEST -#define check(x) \ - if (!(x)) printk("msi_bitmap: test failed at line %d\n", __LINE__); - static void __init test_basics(void) { struct msi_bitmap bmp; int rc, i, size = 512; /* Can't allocate a bitmap of 0 irqs */ - check(msi_bitmap_alloc(&bmp, 0, NULL) != 0); + WARN_ON(msi_bitmap_alloc(&bmp, 0, NULL) == 0); /* of_node may be NULL */ - check(0 == msi_bitmap_alloc(&bmp, size, NULL)); + WARN_ON(msi_bitmap_alloc(&bmp, size, NULL)); /* Should all be free by default */ - check(0 == bitmap_find_free_region(bmp.bitmap, size, - get_count_order(size))); + WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size))); bitmap_release_region(bmp.bitmap, 0, get_count_order(size)); /* With no node, there's no msi-available-ranges, so expect > 0 */ - check(msi_bitmap_reserve_dt_hwirqs(&bmp) > 0); + WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0); /* Should all still be free */ - check(0 == bitmap_find_free_region(bmp.bitmap, size, - get_count_order(size))); + WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size))); bitmap_release_region(bmp.bitmap, 0, get_count_order(size)); /* Check we can fill it up and then no more */ for (i = 0; i < size; i++) - check(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0); + WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0); - check(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0); + WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0); /* Should all be allocated */ - check(bitmap_find_free_region(bmp.bitmap, size, 0) < 0); + WARN_ON(bitmap_find_free_region(bmp.bitmap, size, 0) >= 0); /* And if we free one we can then allocate another */ msi_bitmap_free_hwirqs(&bmp, size / 2, 1); - check(msi_bitmap_alloc_hwirqs(&bmp, 1) == size / 2); + WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) != size / 2); /* Free most of them for the alignment tests */ msi_bitmap_free_hwirqs(&bmp, 3, size - 3); /* Check we get a naturally aligned offset */ rc = msi_bitmap_alloc_hwirqs(&bmp, 2); - check(rc >= 0 && rc % 2 == 0); + WARN_ON(rc < 0 && rc % 2 != 0); rc = msi_bitmap_alloc_hwirqs(&bmp, 4); - check(rc >= 0 && rc % 4 == 0); + WARN_ON(rc < 0 && rc % 4 != 0); rc = msi_bitmap_alloc_hwirqs(&bmp, 8); - check(rc >= 0 && rc % 8 == 0); + WARN_ON(rc < 0 && rc % 8 != 0); rc = msi_bitmap_alloc_hwirqs(&bmp, 9); - check(rc >= 0 && rc % 16 == 0); + WARN_ON(rc < 0 && rc % 16 != 0); rc = msi_bitmap_alloc_hwirqs(&bmp, 3); - check(rc >= 0 && rc % 4 == 0); + WARN_ON(rc < 0 && rc % 4 != 0); rc = msi_bitmap_alloc_hwirqs(&bmp, 7); - check(rc >= 0 && rc % 8 == 0); + WARN_ON(rc < 0 && rc % 8 != 0); rc = msi_bitmap_alloc_hwirqs(&bmp, 121); - check(rc >= 0 && rc % 128 == 0); + WARN_ON(rc < 0 && rc % 128 != 0); msi_bitmap_free(&bmp); - /* Clients may check bitmap == NULL for "not-allocated" */ - check(bmp.bitmap == NULL); + /* Clients may WARN_ON bitmap == NULL for "not-allocated" */ + WARN_ON(bmp.bitmap != NULL); kfree(bmp.bitmap); } @@ -229,14 +224,13 @@ static void __init test_of_node(void) of_node_init(&of_node); of_node.full_name = node_name; - check(0 == msi_bitmap_alloc(&bmp, size, &of_node)); + WARN_ON(msi_bitmap_alloc(&bmp, size, &of_node)); /* No msi-available-ranges, so expect > 0 */ - check(msi_bitmap_reserve_dt_hwirqs(&bmp) > 0); + WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0); /* Should all still be free */ - check(0 == bitmap_find_free_region(bmp.bitmap, size, - get_count_order(size))); + WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size))); bitmap_release_region(bmp.bitmap, 0, get_count_order(size)); /* Now create a fake msi-available-ranges property */ @@ -250,11 +244,11 @@ static void __init test_of_node(void) of_node.properties = ∝ /* msi-available-ranges, so expect == 0 */ - check(msi_bitmap_reserve_dt_hwirqs(&bmp) == 0); + WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp)); /* Check we got the expected result */ - check(0 == bitmap_parselist(expected_str, expected, size)); - check(bitmap_equal(expected, bmp.bitmap, size)); + WARN_ON(bitmap_parselist(expected_str, expected, size)); + WARN_ON(!bitmap_equal(expected, bmp.bitmap, size)); msi_bitmap_free(&bmp); kfree(bmp.bitmap); -- cgit v1.2.3 From 9a2ad529ed26c4dd81368d0bc87fc77db1febb35 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Tue, 14 Oct 2014 23:26:56 -0700 Subject: ARM: sunxi_defconfig: enable CONFIG_REGULATOR Commit 97a13e5289ba ('net: phy: mdio-sun4i: don't select REGULATOR') removed the select of REGULATOR, which means that it now has to be explicitly enabled in the defconfig or things won't work very well. In particular, this fixes a problem with SD/MMC not probing on my A31-based board. Cc: Beniamino Galvani Signed-off-by: Olof Johansson --- arch/arm/configs/sunxi_defconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm/configs/sunxi_defconfig b/arch/arm/configs/sunxi_defconfig index c1a4ca4f6e6d..847045313101 100644 --- a/arch/arm/configs/sunxi_defconfig +++ b/arch/arm/configs/sunxi_defconfig @@ -75,6 +75,7 @@ CONFIG_POWER_RESET_SUN6I=y CONFIG_WATCHDOG=y CONFIG_SUNXI_WATCHDOG=y CONFIG_MFD_AXP20X=y +CONFIG_REGULATOR=y CONFIG_REGULATOR_GPIO=y CONFIG_USB=y CONFIG_USB_EHCI_HCD=y -- cgit v1.2.3 From 66e9bbdb3dbb335b158bb88de2642966af816ffe Mon Sep 17 00:00:00 2001 From: Dominik Dingel Date: Mon, 6 Oct 2014 16:34:44 +0200 Subject: s390/mm: fixing calls of pte_unmap_unlock pte_unmap works on page table entry pointers, derefencing should be avoided. As on s390 pte_unmap is a NOP, this is more a cleanup if we want to supply later such function. Signed-off-by: Dominik Dingel Reviewed-by: Thomas Huth Signed-off-by: Martin Schwidefsky --- arch/s390/mm/pgtable.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 296b61a4af59..1b79ca67392f 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -656,7 +656,7 @@ void __gmap_zap(struct gmap *gmap, unsigned long gaddr) } pgste_set_unlock(ptep, pgste); out_pte: - pte_unmap_unlock(*ptep, ptl); + pte_unmap_unlock(ptep, ptl); } EXPORT_SYMBOL_GPL(__gmap_zap); @@ -943,7 +943,7 @@ retry: } if (!(pte_val(*ptep) & _PAGE_INVALID) && (pte_val(*ptep) & _PAGE_PROTECT)) { - pte_unmap_unlock(*ptep, ptl); + pte_unmap_unlock(ptep, ptl); if (fixup_user_fault(current, mm, addr, FAULT_FLAG_WRITE)) { up_read(&mm->mmap_sem); return -EFAULT; @@ -974,7 +974,7 @@ retry: pgste_val(new) |= PGSTE_UC_BIT; pgste_set_unlock(ptep, new); - pte_unmap_unlock(*ptep, ptl); + pte_unmap_unlock(ptep, ptl); up_read(&mm->mmap_sem); return 0; } -- cgit v1.2.3 From 5c9fb1899400096c6818181c525897a31d57e488 Mon Sep 17 00:00:00 2001 From: Greg Kurz Date: Wed, 15 Oct 2014 12:42:58 +0200 Subject: powerpc/vphn: NUMA node code expects big-endian The associativity domain numbers are obtained from the hypervisor through registers and written into memory by the guest: the packed array passed to vphn_unpack_associativity() is then native-endian, unlike what was assumed in the following commit: commit b08a2a12e44eaec5024b2b969f4fcb98169d1ca3 Author: Alistair Popple Date: Wed Aug 7 02:01:44 2013 +1000 powerpc: Make NUMA device node code endian safe This issue fills the topology with bogus data and makes it unusable. It may lead to severe performance breakdowns. We should ideally patch the vphn_unpack_associativity() function to do the 64-bit loads, but this requires some more brain storming. In the meantime, let's go for a suboptimal and temporary bug fix: this patch converts each 64-bit value of the packed array to big endian, as expected by the current parsing code in vphn_unpack_associativity(). Signed-off-by: Greg Kurz Signed-off-by: Michael Ellerman --- arch/powerpc/mm/numa.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch') diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 177659050fa0..e5236c24dc07 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1460,8 +1460,11 @@ static long hcall_vphn(unsigned long cpu, __be32 *associativity) long retbuf[PLPAR_HCALL9_BUFSIZE] = {0}; u64 flags = 1; int hwcpu = get_hard_smp_processor_id(cpu); + int i; rc = plpar_hcall9(H_HOME_NODE_ASSOCIATIVITY, retbuf, flags, hwcpu); + for (i = 0; i < 6; i++) + retbuf[i] = cpu_to_be64(retbuf[i]); vphn_unpack_associativity(retbuf, associativity); return rc; -- cgit v1.2.3 From 2c186e05a5c6dc8fcfb1e8bf6901ad1598c40db6 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 13 Oct 2014 20:21:22 +1100 Subject: powerpc: Add printk levels to setup_system output Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/setup_64.c | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index cd07d79ad21c..4f3cfe1b6a33 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -522,36 +522,36 @@ void __init setup_system(void) smp_release_cpus(); #endif - printk("Starting Linux PPC64 %s\n", init_utsname()->version); + pr_info("Starting Linux PPC64 %s\n", init_utsname()->version); - printk("-----------------------------------------------------\n"); - printk("ppc64_pft_size = 0x%llx\n", ppc64_pft_size); - printk("phys_mem_size = 0x%llx\n", memblock_phys_mem_size()); + pr_info("-----------------------------------------------------\n"); + pr_info("ppc64_pft_size = 0x%llx\n", ppc64_pft_size); + pr_info("phys_mem_size = 0x%llx\n", memblock_phys_mem_size()); if (ppc64_caches.dline_size != 0x80) - printk("dcache_line_size = 0x%x\n", ppc64_caches.dline_size); + pr_info("dcache_line_size = 0x%x\n", ppc64_caches.dline_size); if (ppc64_caches.iline_size != 0x80) - printk("icache_line_size = 0x%x\n", ppc64_caches.iline_size); + pr_info("icache_line_size = 0x%x\n", ppc64_caches.iline_size); - printk("cpu_features = 0x%016lx\n", cur_cpu_spec->cpu_features); - printk(" possible = 0x%016lx\n", CPU_FTRS_POSSIBLE); - printk(" always = 0x%016lx\n", CPU_FTRS_ALWAYS); - printk("cpu_user_features = 0x%08x 0x%08x\n", cur_cpu_spec->cpu_user_features, + pr_info("cpu_features = 0x%016lx\n", cur_cpu_spec->cpu_features); + pr_info(" possible = 0x%016lx\n", CPU_FTRS_POSSIBLE); + pr_info(" always = 0x%016lx\n", CPU_FTRS_ALWAYS); + pr_info("cpu_user_features = 0x%08x 0x%08x\n", cur_cpu_spec->cpu_user_features, cur_cpu_spec->cpu_user_features2); - printk("mmu_features = 0x%08x\n", cur_cpu_spec->mmu_features); - printk("firmware_features = 0x%016lx\n", powerpc_firmware_features); + pr_info("mmu_features = 0x%08x\n", cur_cpu_spec->mmu_features); + pr_info("firmware_features = 0x%016lx\n", powerpc_firmware_features); #ifdef CONFIG_PPC_STD_MMU_64 if (htab_address) - printk("htab_address = 0x%p\n", htab_address); + pr_info("htab_address = 0x%p\n", htab_address); - printk("htab_hash_mask = 0x%lx\n", htab_hash_mask); + pr_info("htab_hash_mask = 0x%lx\n", htab_hash_mask); #endif if (PHYSICAL_START > 0) - printk("physical_start = 0x%llx\n", + pr_info("physical_start = 0x%llx\n", (unsigned long long)PHYSICAL_START); - printk("-----------------------------------------------------\n"); + pr_info("-----------------------------------------------------\n"); DBG(" <- setup_system()\n"); } -- cgit v1.2.3 From 86be175a730bd98de2b75522eae08160ec2dec91 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 13 Oct 2014 20:17:33 +1100 Subject: powerpc: sync pseries_le_defconfig with pseries_defconfig Now KVM is working on LE, enable it. Also enable transarent hugepage which has already been enabled on BE. Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman --- arch/powerpc/configs/pseries_le_defconfig | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/configs/pseries_le_defconfig b/arch/powerpc/configs/pseries_le_defconfig index 4428ee428f4e..96a230cd5ca7 100644 --- a/arch/powerpc/configs/pseries_le_defconfig +++ b/arch/powerpc/configs/pseries_le_defconfig @@ -48,7 +48,6 @@ CONFIG_KEXEC=y CONFIG_IRQ_ALL_CPUS=y CONFIG_MEMORY_HOTPLUG=y CONFIG_MEMORY_HOTREMOVE=y -CONFIG_CMA=y CONFIG_PPC_64K_PAGES=y CONFIG_PPC_SUBPAGE_PROT=y CONFIG_SCHED_SMT=y @@ -137,6 +136,7 @@ CONFIG_NETCONSOLE=y CONFIG_NETPOLL_TRAP=y CONFIG_TUN=m CONFIG_VIRTIO_NET=m +CONFIG_VHOST_NET=m CONFIG_VORTEX=y CONFIG_ACENIC=m CONFIG_ACENIC_OMIT_TIGON_I=y @@ -302,4 +302,9 @@ CONFIG_CRYPTO_LZO=m # CONFIG_CRYPTO_ANSI_CPRNG is not set CONFIG_CRYPTO_DEV_NX=y CONFIG_CRYPTO_DEV_NX_ENCRYPT=m +CONFIG_VIRTUALIZATION=y +CONFIG_KVM_BOOK3S_64=m +CONFIG_KVM_BOOK3S_64_HV=y +CONFIG_TRANSPARENT_HUGEPAGE=y +CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y -- cgit v1.2.3 From e512448f6e98fb77f2be8ec7155f0ed941855796 Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Tue, 23 Sep 2014 13:21:41 -0500 Subject: ARM: dts: qcom: Add SATA support on IPQ8064/AP148 Add SATA PHY and SATA AHCI controller nodes to device tree to enable generic ahci support on the IPQ8064/AP148 board. Signed-off-by: Kumar Gala --- arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 8 ++++++++ arch/arm/boot/dts/qcom-ipq8064.dtsi | 33 ++++++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts index 95e64955fb8e..55b2910efd87 100644 --- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts +++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts @@ -81,5 +81,13 @@ }; }; }; + + sata-phy@1b400000 { + status = "ok"; + }; + + sata@29000000 { + status = "ok"; + }; }; }; diff --git a/arch/arm/boot/dts/qcom-ipq8064.dtsi b/arch/arm/boot/dts/qcom-ipq8064.dtsi index 244f857f0e6f..63b2146f563b 100644 --- a/arch/arm/boot/dts/qcom-ipq8064.dtsi +++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi @@ -234,6 +234,39 @@ }; }; + sata_phy: sata-phy@1b400000 { + compatible = "qcom,ipq806x-sata-phy"; + reg = <0x1b400000 0x200>; + + clocks = <&gcc SATA_PHY_CFG_CLK>; + clock-names = "cfg"; + + #phy-cells = <0>; + status = "disabled"; + }; + + sata@29000000 { + compatible = "qcom,ipq806x-ahci", "generic-ahci"; + reg = <0x29000000 0x180>; + + interrupts = <0 209 0x0>; + + clocks = <&gcc SFAB_SATA_S_H_CLK>, + <&gcc SATA_H_CLK>, + <&gcc SATA_A_CLK>, + <&gcc SATA_RXOOB_CLK>, + <&gcc SATA_PMALIVE_CLK>; + clock-names = "slave_face", "iface", "core", + "rxoob", "pmalive"; + + assigned-clocks = <&gcc SATA_RXOOB_CLK>, <&gcc SATA_PMALIVE_CLK>; + assigned-clock-rates = <100000000>, <100000000>; + + phys = <&sata_phy>; + phy-names = "sata-phy"; + status = "disabled"; + }; + qcom,ssbi@500000 { compatible = "qcom,ssbi"; reg = <0x00500000 0x1000>; -- cgit v1.2.3 From 71b5235ab69bc65a19f5b15a7fa01a0a5de89cb5 Mon Sep 17 00:00:00 2001 From: Tim Bird Date: Tue, 30 Sep 2014 15:49:49 -0700 Subject: ARM: dts: qcom: Add initial DTS file for Sony Xperia Z1 phone This DTS has support for the Sony Xperia Z1 phone (codenamed Honami). This first version of the DTS supports just a serial console. Signed-off-by: Tim Bird Tested-by: Kevin Hilman Signed-off-by: Kumar Gala --- Documentation/devicetree/bindings/vendor-prefixes.txt | 1 + arch/arm/boot/dts/Makefile | 3 ++- arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts | 17 +++++++++++++++++ 3 files changed, 20 insertions(+), 1 deletion(-) create mode 100644 arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts (limited to 'arch') diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index ac7269f90764..d3a45796d249 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -128,6 +128,7 @@ sirf SiRF Technology, Inc. smsc Standard Microsystems Corporation snps Synopsys, Inc. solidrun SolidRun +sony Sony Corporation spansion Spansion Inc. st STMicroelectronics ste ST-Ericsson diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index aaa1a685d319..1e7b833bf489 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -345,7 +345,8 @@ dtb-$(CONFIG_ARCH_QCOM) += \ qcom-apq8084-mtp.dtb \ qcom-ipq8064-ap148.dtb \ qcom-msm8660-surf.dtb \ - qcom-msm8960-cdp.dtb + qcom-msm8960-cdp.dtb \ + qcom-msm8974-sony-xperia-honami.dtb dtb-$(CONFIG_ARCH_ROCKCHIP) += \ rk3066a-bqcurie2.dtb \ rk3188-radxarock.dtb \ diff --git a/arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts b/arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts new file mode 100644 index 000000000000..cccc21b7c8fd --- /dev/null +++ b/arch/arm/boot/dts/qcom-msm8974-sony-xperia-honami.dts @@ -0,0 +1,17 @@ +#include "qcom-msm8974.dtsi" + +/ { + model = "Sony Xperia Z1"; + compatible = "sony,xperia-honami", "qcom,msm8974"; + + memory@0 { + reg = <0 0x40000000>, <0x40000000 0x40000000>; + device_type = "memory"; + }; +}; + +&soc { + serial@f991e000 { + status = "ok"; + }; +}; -- cgit v1.2.3 From 7dac24bdc1dd561573cd8ce534a63dc975f51ca8 Mon Sep 17 00:00:00 2001 From: Mike Rapoport Date: Wed, 1 Oct 2014 19:09:11 +0300 Subject: ARM: dts: qcom: add CM-QS600 board CM-QS600 is a APQ8064 based computer on module. The details are available at http://compulab.co.il/products/computer-on-modules/cm-qs600/ Signed-off-by: Mike Rapoport Acked-by: Igor Grinberg Signed-off-by: Kumar Gala --- arch/arm/boot/dts/Makefile | 1 + arch/arm/boot/dts/qcom-apq8064-cm-qs600.dts | 59 +++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+) create mode 100644 arch/arm/boot/dts/qcom-apq8064-cm-qs600.dts (limited to 'arch') diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 1e7b833bf489..91aa4766e3ce 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -339,6 +339,7 @@ dtb-$(CONFIG_ARCH_ORION5X) += orion5x-lacie-d2-network.dtb \ orion5x-rd88f5182-nas.dtb dtb-$(CONFIG_ARCH_PRIMA2) += prima2-evb.dtb dtb-$(CONFIG_ARCH_QCOM) += \ + qcom-apq8064-cm-qs600.dtb \ qcom-apq8064-ifc6410.dtb \ qcom-apq8074-dragonboard.dtb \ qcom-apq8084-ifc6540.dtb \ diff --git a/arch/arm/boot/dts/qcom-apq8064-cm-qs600.dts b/arch/arm/boot/dts/qcom-apq8064-cm-qs600.dts new file mode 100644 index 000000000000..5d75666f7f6c --- /dev/null +++ b/arch/arm/boot/dts/qcom-apq8064-cm-qs600.dts @@ -0,0 +1,59 @@ +#include "qcom-apq8064-v2.0.dtsi" + +/ { + model = "CompuLab CM-QS600"; + compatible = "qcom,apq8064-cm-qs600", "qcom,apq8064"; + + soc { + pinctrl@800000 { + i2c1_pins: i2c1 { + mux { + pins = "gpio20", "gpio21"; + function = "gsbi1"; + }; + }; + }; + + gsbi@12440000 { + status = "okay"; + qcom,mode = ; + + i2c@12460000 { + status = "okay"; + clock-frequency = <200000>; + pinctrl-0 = <&i2c1_pins>; + pinctrl-names = "default"; + + eeprom: eeprom@50 { + compatible = "24c02"; + reg = <0x50>; + pagesize = <32>; + }; + }; + }; + + gsbi@16600000 { + status = "ok"; + qcom,mode = ; + serial@16640000 { + status = "ok"; + }; + }; + + amba { + /* eMMC */ + sdcc1: sdcc@12400000 { + status = "okay"; + }; + + /* External micro SD card */ + sdcc3: sdcc@12180000 { + status = "okay"; + }; + /* WLAN */ + sdcc4: sdcc@121c0000 { + status = "okay"; + }; + }; + }; +}; -- cgit v1.2.3 From e89dafb5ca5022d3bc63602018adfc766c73bc2b Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Thu, 16 Oct 2014 17:43:02 +1100 Subject: powerpc: Only do dynamic DMA zone limits on platforms that need it Scott's patch 1c98025c6c95 "Dynamic DMA zone limits" changed dma_direct_alloc_coherent() to start using dev->coherent_dma_mask. That seems fair enough, but it exposes the fact that some of the drivers we care about on IBM platforms aren't setting the coherent mask. The proper fix is to have drivers set the coherent mask and also have the platform code honor it. For now, just restrict the dynamic DMA zone limits to the platforms that need it. Signed-off-by: Michael Ellerman Acked-by: Scott Wood --- arch/powerpc/kernel/dma.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch') diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c index adac9dc54aee..484b2d4462c1 100644 --- a/arch/powerpc/kernel/dma.c +++ b/arch/powerpc/kernel/dma.c @@ -53,9 +53,16 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t size, #else struct page *page; int node = dev_to_node(dev); +#ifdef CONFIG_FSL_SOC u64 pfn = get_pfn_limit(dev); int zone; + /* + * This code should be OK on other platforms, but we have drivers that + * don't set coherent_dma_mask. As a workaround we just ifdef it. This + * whole routine needs some serious cleanup. + */ + zone = dma_pfn_limit_to_zone(pfn); if (zone < 0) { dev_err(dev, "%s: No suitable zone for pfn %#llx\n", @@ -73,6 +80,7 @@ void *dma_direct_alloc_coherent(struct device *dev, size_t size, break; #endif }; +#endif /* CONFIG_FSL_SOC */ /* ignore region specifiers */ flag &= ~(__GFP_HIGHMEM); -- cgit v1.2.3 From e1c69efc52bbad7fa289694672d467ab4fdf9f52 Mon Sep 17 00:00:00 2001 From: Sjoerd Simons Date: Thu, 25 Sep 2014 17:32:14 +0900 Subject: ARM: dts: Explicitly set dr_mode on exynos Peach boards In case the optional dr_mode property isn't set in the dwc3 nodes the the controller will go into OTG mode if both USB host and USB gadget functionality are enabled in the kernel configuration. Unfortunately this results in USB not working on exynos5420-peach-pit and exynos5800-peach-pi with such a kernel configuration unless manually change the mode. To resolve that explicitly configure the dual role mode as host. Signed-off-by: Sjoerd Simons Reviewed-by: Andreas Faerber Signed-off-by: Kukjin Kim --- arch/arm/boot/dts/exynos5420-peach-pit.dts | 8 ++++++++ arch/arm/boot/dts/exynos5420.dtsi | 4 ++-- arch/arm/boot/dts/exynos5800-peach-pi.dts | 8 ++++++++ 3 files changed, 18 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts index 228a6b1e0aa1..29d3a5994df4 100644 --- a/arch/arm/boot/dts/exynos5420-peach-pit.dts +++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts @@ -427,6 +427,14 @@ status = "okay"; }; +&usbdrd_dwc3_0 { + dr_mode = "host"; +}; + +&usbdrd_dwc3_1 { + dr_mode = "host"; +}; + &usbdrd_phy0 { vbus-supply = <&usb300_vbus_reg>; }; diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi index bfe056d9148c..8617a031cbc0 100644 --- a/arch/arm/boot/dts/exynos5420.dtsi +++ b/arch/arm/boot/dts/exynos5420.dtsi @@ -815,7 +815,7 @@ #size-cells = <1>; ranges; - dwc3 { + usbdrd_dwc3_0: dwc3 { compatible = "snps,dwc3"; reg = <0x12000000 0x10000>; interrupts = <0 72 0>; @@ -841,7 +841,7 @@ #size-cells = <1>; ranges; - dwc3 { + usbdrd_dwc3_1: dwc3 { compatible = "snps,dwc3"; reg = <0x12400000 0x10000>; interrupts = <0 73 0>; diff --git a/arch/arm/boot/dts/exynos5800-peach-pi.dts b/arch/arm/boot/dts/exynos5800-peach-pi.dts index f3ee48bbe05f..20645502fecb 100644 --- a/arch/arm/boot/dts/exynos5800-peach-pi.dts +++ b/arch/arm/boot/dts/exynos5800-peach-pi.dts @@ -425,6 +425,14 @@ status = "okay"; }; +&usbdrd_dwc3_0 { + dr_mode = "host"; +}; + +&usbdrd_dwc3_1 { + dr_mode = "host"; +}; + &usbdrd_phy0 { vbus-supply = <&usb300_vbus_reg>; }; -- cgit v1.2.3 From 4e03394e939135adcd453bd538ea02d98a30473b Mon Sep 17 00:00:00 2001 From: Sjoerd Simons Date: Thu, 25 Sep 2014 17:32:31 +0900 Subject: ARM: dts: Explicitly set dr_mode on exynos5420-arndale-octa Explicitly set the dr_mode for the second dwc3 controller on the Arndale Octa board to host mode. This is required to ensure the controller is initialized in the right mode if the kernel is build with USB gadget support. Reported-By: Andreas Faerber Signed-off-by: Sjoerd Simons Signed-off-by: Kukjin Kim --- arch/arm/boot/dts/exynos5420-arndale-octa.dts | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts index 434fd9d3e09d..fc2e983cb344 100644 --- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts +++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts @@ -375,3 +375,7 @@ }; }; }; + +&usbdrd_dwc3_1 { + dr_mode = "host"; +}; -- cgit v1.2.3 From fcb1c2d75b55fe52c40cd9692fda73da061f19aa Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Thu, 9 Oct 2014 12:58:25 +0200 Subject: s390: wire up bpf syscall Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/include/uapi/asm/unistd.h | 3 ++- arch/s390/kernel/compat_wrapper.c | 1 + arch/s390/kernel/syscalls.S | 1 + 3 files changed, 4 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/s390/include/uapi/asm/unistd.h b/arch/s390/include/uapi/asm/unistd.h index 940ac49198db..4197c89c52d4 100644 --- a/arch/s390/include/uapi/asm/unistd.h +++ b/arch/s390/include/uapi/asm/unistd.h @@ -286,7 +286,8 @@ #define __NR_seccomp 348 #define __NR_getrandom 349 #define __NR_memfd_create 350 -#define NR_syscalls 351 +#define __NR_bpf 351 +#define NR_syscalls 352 /* * There are some system calls that are not present on 64 bit, some diff --git a/arch/s390/kernel/compat_wrapper.c b/arch/s390/kernel/compat_wrapper.c index faf6caa510dc..c4f7a3d655b8 100644 --- a/arch/s390/kernel/compat_wrapper.c +++ b/arch/s390/kernel/compat_wrapper.c @@ -217,3 +217,4 @@ COMPAT_SYSCALL_WRAP5(renameat2, int, olddfd, const char __user *, oldname, int, COMPAT_SYSCALL_WRAP3(seccomp, unsigned int, op, unsigned int, flags, const char __user *, uargs) COMPAT_SYSCALL_WRAP3(getrandom, char __user *, buf, size_t, count, unsigned int, flags) COMPAT_SYSCALL_WRAP2(memfd_create, const char __user *, uname, unsigned int, flags) +COMPAT_SYSCALL_WRAP3(bpf, int, cmd, union bpf_attr *, attr, unsigned int, size); diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index 6fe886ac2db5..9f7087fd58de 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -359,3 +359,4 @@ SYSCALL(sys_renameat2,sys_renameat2,compat_sys_renameat2) SYSCALL(sys_seccomp,sys_seccomp,compat_sys_seccomp) SYSCALL(sys_getrandom,sys_getrandom,compat_sys_getrandom) SYSCALL(sys_memfd_create,sys_memfd_create,compat_sys_memfd_create) /* 350 */ +SYSCALL(sys_bpf,sys_bpf,compat_sys_bpf) -- cgit v1.2.3 From d6fe5be34cf03e7db36d99c1b9d8e472ad3bdb87 Mon Sep 17 00:00:00 2001 From: Jan Willeke Date: Wed, 8 Oct 2014 10:16:08 +0200 Subject: s390/uprobes: fix kprobes dependency If kprobes is disabled uprobes will not compile. Fix this by including the correct header files. Signed-off-by: Jan Willeke Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/uprobes.c | 2 +- arch/s390/lib/probes.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/s390/kernel/uprobes.c b/arch/s390/kernel/uprobes.c index 956f4f7a591c..f6b3cd056ec2 100644 --- a/arch/s390/kernel/uprobes.c +++ b/arch/s390/kernel/uprobes.c @@ -5,13 +5,13 @@ * Author(s): Jan Willeke, */ -#include #include #include #include #include #include #include +#include #include #include "entry.h" diff --git a/arch/s390/lib/probes.c b/arch/s390/lib/probes.c index c5d64a099719..ae90e1ae3607 100644 --- a/arch/s390/lib/probes.c +++ b/arch/s390/lib/probes.c @@ -4,7 +4,7 @@ * Copyright IBM Corp. 2014 */ -#include +#include #include int probe_is_prohibited_opcode(u16 *insn) -- cgit v1.2.3 From 7fc150543c73de71859631c8a6b17e3067fe7617 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 15 Oct 2014 22:37:13 +0100 Subject: ARM: Blacklist GCC 4.8.0 to GCC 4.8.2 - PR58854 These stock GCC versions miscompile the kernel by incorrectly optimising the function epilogue code - by first increasing the stack pointer, and then loading entries from below the stack. This means that an opportune interrupt or exception will corrupt the current function's saved state, which may result in the parent function seeing different register values. As this bug has been known to result in corrupted filesystems, and these buggy compiler versions seem to be frequently used, we have little option but to blacklist these compiler versions. Distributions may have fixed PR58854, but as their compilers are totally indistinguishable from the buggy versions, it is unfortunate that this also results in those also being blacklisted. Given the filesystem corruption potential of the original, this is the lesser evil. People who want to build with their fixed compiler versions will need to adjust the kernel source. (Distros need to think about the implications of fixing such a compiler bug, and consider how to ensure that their fixed compiler versions can be detected if they wish to avoid this.) Signed-off-by: Russell King --- arch/arm/kernel/asm-offsets.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 713e807621d2..2d2d6087b9b1 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -10,6 +10,7 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ +#include #include #include #include @@ -39,10 +40,19 @@ * GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c * (http://gcc.gnu.org/PR8896) and incorrect structure * initialisation in fs/jffs2/erase.c + * GCC 4.8.0-4.8.2: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854 + * miscompiles find_get_entry(), and can result in EXT3 and EXT4 + * filesystem corruption (possibly other FS too). */ +#ifdef __GNUC__ #if (__GNUC__ == 3 && __GNUC_MINOR__ < 3) #error Your compiler is too buggy; it is known to miscompile kernels. -#error Known good compilers: 3.3 +#error Known good compilers: 3.3, 4.x +#endif +#if GCC_VERSION >= 40800 && GCC_VERSION < 40803 +#error Your compiler is too buggy; it is known to miscompile kernels +#error and result in filesystem corruption and oopses. +#endif #endif int main(void) -- cgit v1.2.3 From db6a00b4bed3abbb038077ba4fdc5be481fe5559 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sun, 19 Oct 2014 11:41:52 +0200 Subject: x86/smpboot: Move data structure to its primary usage scope MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Makes the code more readable by moving variable and usage closer to each other, which also avoids this build warning in the !CONFIG_HOTPLUG_CPU case: arch/x86/kernel/smpboot.c:105:42: warning: ‘die_complete’ defined but not used [-Wunused-variable] Cc: Prarit Bhargava Cc: Lan Tianyu Cc: Borislav Petkov Cc: Peter Zijlstra Cc: srostedt@redhat.com Cc: toshi.kani@hp.com Cc: imammedo@redhat.com Cc: Linus Torvalds Link: http://lkml.kernel.org/r/1409039025-32310-1-git-send-email-tianyu.lan@intel.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/smpboot.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 2d5200e56357..4d2128ac70bd 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -102,8 +102,6 @@ DEFINE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_llc_shared_map); DEFINE_PER_CPU_SHARED_ALIGNED(struct cpuinfo_x86, cpu_info); EXPORT_PER_CPU_SYMBOL(cpu_info); -static DEFINE_PER_CPU(struct completion, die_complete); - atomic_t init_deasserted; /* @@ -1318,6 +1316,8 @@ void cpu_disable_common(void) fixup_irqs(); } +static DEFINE_PER_CPU(struct completion, die_complete); + int native_cpu_disable(void) { int ret; -- cgit v1.2.3 From b5241fb1ca7941fe7d4e2d446e8d753737761a84 Mon Sep 17 00:00:00 2001 From: Soren Brinkmann Date: Tue, 16 Sep 2014 08:08:38 -0700 Subject: ARM: zynq: DT: Fix GEM register area size The size of the GEM's register area is only 0x1000 bytes. Signed-off-by: Soren Brinkmann Signed-off-by: Michal Simek --- arch/arm/boot/dts/zynq-7000.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi index 24036c440440..a5130541200a 100644 --- a/arch/arm/boot/dts/zynq-7000.dtsi +++ b/arch/arm/boot/dts/zynq-7000.dtsi @@ -195,7 +195,7 @@ gem0: ethernet@e000b000 { compatible = "cdns,gem"; - reg = <0xe000b000 0x4000>; + reg = <0xe000b000 0x1000>; status = "disabled"; interrupts = <0 22 4>; clocks = <&clkc 30>, <&clkc 30>, <&clkc 13>; @@ -206,7 +206,7 @@ gem1: ethernet@e000c000 { compatible = "cdns,gem"; - reg = <0xe000c000 0x4000>; + reg = <0xe000c000 0x1000>; status = "disabled"; interrupts = <0 45 4>; clocks = <&clkc 31>, <&clkc 31>, <&clkc 14>; -- cgit v1.2.3 From e8b397754a712f1b3c3fbf448ad836034ecc6643 Mon Sep 17 00:00:00 2001 From: Soren Brinkmann Date: Tue, 23 Sep 2014 11:55:20 -0700 Subject: ARM: zynq: DT: Remove 222 MHz OPP Due to dependencies between timer and CPU frequency, only changes by powers of two are allowed. The clocksource driver prevents other changes, but with cpufreq and its governors it can result in being spammed with error messages constantly. Hence, remove the 222 MHz OPP. Signed-off-by: Soren Brinkmann Signed-off-by: Michal Simek --- arch/arm/boot/dts/zynq-7000.dtsi | 1 - 1 file changed, 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi index a5130541200a..1836a60444fa 100644 --- a/arch/arm/boot/dts/zynq-7000.dtsi +++ b/arch/arm/boot/dts/zynq-7000.dtsi @@ -30,7 +30,6 @@ /* kHz uV */ 666667 1000000 333334 1000000 - 222223 1000000 >; }; -- cgit v1.2.3 From 8abef06b63e639b910d202319be9e8151ac3a1ed Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Wed, 24 Sep 2014 15:16:01 +0200 Subject: ARM: zynq: DT: Add missing address for L2 pl310 By in sync with others node and add also baseaddr to the node name. Signed-off-by: Michal Simek --- arch/arm/boot/dts/zynq-7000.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi index 1836a60444fa..772381fe07bb 100644 --- a/arch/arm/boot/dts/zynq-7000.dtsi +++ b/arch/arm/boot/dts/zynq-7000.dtsi @@ -136,7 +136,7 @@ <0xF8F00100 0x100>; }; - L2: cache-controller { + L2: cache-controller@f8f02000 { compatible = "arm,pl310-cache"; reg = <0xF8F02000 0x1000>; arm,data-latency = <3 2 2>; -- cgit v1.2.3 From 70472c432821f663ff6a404dfae7e8785f0259ea Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Wed, 24 Sep 2014 15:28:59 +0200 Subject: ARM: zynq: DT: Add missing reference for ADC Add missing reference for ADC node. Signed-off-by: Michal Simek --- arch/arm/boot/dts/zynq-7000.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi index 772381fe07bb..fc90f47f9c03 100644 --- a/arch/arm/boot/dts/zynq-7000.dtsi +++ b/arch/arm/boot/dts/zynq-7000.dtsi @@ -64,7 +64,7 @@ interrupt-parent = <&intc>; ranges; - adc@f8007100 { + adc: adc@f8007100 { compatible = "xlnx,zynq-xadc-1.00.a"; reg = <0xf8007100 0x20>; interrupts = <0 7 4>; -- cgit v1.2.3 From 6c7ba4157bfcec1d264c79095eeeae846527cd96 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Wed, 24 Sep 2014 15:53:39 +0200 Subject: ARM: zynq: DT: Add missing reference for memory-controller Add missing reference for memory-controller. Signed-off-by: Michal Simek --- arch/arm/boot/dts/zynq-7000.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi index fc90f47f9c03..2690e6d01f71 100644 --- a/arch/arm/boot/dts/zynq-7000.dtsi +++ b/arch/arm/boot/dts/zynq-7000.dtsi @@ -145,7 +145,7 @@ cache-level = <2>; }; - memory-controller@f8006000 { + mc: memory-controller@f8006000 { compatible = "xlnx,zynq-ddrc-a05"; reg = <0xf8006000 0x1000>; } ; -- cgit v1.2.3 From 6714297b1bb472d3b475af47ed0f91bbe012eea4 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Thu, 2 Oct 2014 15:09:15 +0200 Subject: ARM: zynq: DT: Add cadence watchdog node Add the cadence watchdog node to the Zynq devicetree. Signed-off-by: Michal Simek --- arch/arm/boot/dts/zynq-7000.dtsi | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi index 2690e6d01f71..ea2651cd92ec 100644 --- a/arch/arm/boot/dts/zynq-7000.dtsi +++ b/arch/arm/boot/dts/zynq-7000.dtsi @@ -314,5 +314,16 @@ reg = <0xf8f00600 0x20>; clocks = <&clkc 4>; }; + + watchdog0: watchdog@f8005000 { + clocks = <&clkc 45>; + compatible = "xlnx,zynq-wdt-r1p2"; + device_type = "watchdog"; + interrupt-parent = <&intc>; + interrupts = <0 9 1>; + reg = <0xf8005000 0x1000>; + reset = <0>; + timeout-sec = <10>; + }; }; }; -- cgit v1.2.3 From 2329efbbca2943f03fa1c7306ef2f6a053be0ae5 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Mon, 20 Oct 2014 15:15:47 +0200 Subject: ARM: zynq: DT: trivial: Fix mc node sed -i 's/}\ ;/};/g' Signed-off-by: Michal Simek --- arch/arm/boot/dts/zynq-7000.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi index ea2651cd92ec..ce2ef5bec4f2 100644 --- a/arch/arm/boot/dts/zynq-7000.dtsi +++ b/arch/arm/boot/dts/zynq-7000.dtsi @@ -148,7 +148,7 @@ mc: memory-controller@f8006000 { compatible = "xlnx,zynq-ddrc-a05"; reg = <0xf8006000 0x1000>; - } ; + }; uart0: serial@e0000000 { compatible = "xlnx,xuartps", "cdns,uart-r1p8"; -- cgit v1.2.3 From 961b6a7003acec4f9d70dabc1a253b783cb74272 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 20 Oct 2014 22:45:27 +0800 Subject: x86: ACPI: Do not translate GSI number if IOAPIC is disabled When IOAPIC is disabled, acpi_gsi_to_irq() should return gsi directly instead of calling mp_map_gsi_to_irq() to translate gsi to IRQ by IOAPIC. It fixes https://bugzilla.kernel.org/show_bug.cgi?id=84381. This regression was introduced with commit 6b9fb7082409 "x86, ACPI, irq: Consolidate algorithm of mapping (ioapic, pin) to IRQ number" Reported-and-Tested-by: Thomas Richter Signed-off-by: Jiang Liu Cc: Tony Luck Cc: Thomas Richter Cc: rui.zhang@intel.com Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: # 3.17 Link: http://lkml.kernel.org/r/1413816327-12850-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner --- arch/x86/kernel/acpi/boot.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index b436fc735aa4..d5c887216fb3 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -604,14 +604,18 @@ void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp) { - int irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK); + int irq; - if (irq >= 0) { + if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { + *irqp = gsi; + } else { + irq = mp_map_gsi_to_irq(gsi, + IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK); + if (irq < 0) + return -1; *irqp = irq; - return 0; } - - return -1; + return 0; } EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); -- cgit v1.2.3 From 04f905a9569ca2b6964a35563f135fabbb2470bc Mon Sep 17 00:00:00 2001 From: Christoffer Dall Date: Fri, 10 Oct 2014 11:14:30 +0100 Subject: arm64: Allow 48-bits VA space without ARM_SMMU Now when KVM has been reworked to support 48-bits host VA space, we can allow systems to be configured with this option. However, the ARM SMMU driver also needs to be tweaked for 48-bit support so only allow the config option to be set when not including support for theSMMU. Signed-off-by: Christoffer Dall Signed-off-by: Catalin Marinas --- arch/arm64/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index ac9afde76dea..b8053be1d803 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -232,7 +232,7 @@ config ARM64_VA_BITS_42 config ARM64_VA_BITS_48 bool "48-bit" - depends on BROKEN + depends on !ARM_SMMU endchoice -- cgit v1.2.3 From 2a0b5c0d19298cad54573682321b5fe015fa5a0d Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Fri, 10 Oct 2014 15:37:28 +0100 Subject: arm64: Align less than PAGE_SIZE pgds naturally When the pgd size is smaller than PAGE_SIZE, pgd_alloc() uses kzalloc() to save space. However, this is not always naturally aligned as required by the architecture. This patch creates a kmem_cache for pgd allocations with the correct alignment. The current kernel configurations with 4K pages + 39-bit VA and 64K pages + 42-bit VA use a full page for the pgd and are not affected. The patch is required for 48-bit VA with 64K pages where the pgd is 512 bytes. Reported-by: Christoffer Dall Reviewed-by: Christoffer Dall Signed-off-by: Catalin Marinas --- arch/arm64/mm/pgd.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm64/mm/pgd.c b/arch/arm64/mm/pgd.c index 62c6101df260..6682b361d3ac 100644 --- a/arch/arm64/mm/pgd.c +++ b/arch/arm64/mm/pgd.c @@ -30,12 +30,14 @@ #define PGD_SIZE (PTRS_PER_PGD * sizeof(pgd_t)) +static struct kmem_cache *pgd_cache; + pgd_t *pgd_alloc(struct mm_struct *mm) { if (PGD_SIZE == PAGE_SIZE) return (pgd_t *)get_zeroed_page(GFP_KERNEL); else - return kzalloc(PGD_SIZE, GFP_KERNEL); + return kmem_cache_zalloc(pgd_cache, GFP_KERNEL); } void pgd_free(struct mm_struct *mm, pgd_t *pgd) @@ -43,5 +45,17 @@ void pgd_free(struct mm_struct *mm, pgd_t *pgd) if (PGD_SIZE == PAGE_SIZE) free_page((unsigned long)pgd); else - kfree(pgd); + kmem_cache_free(pgd_cache, pgd); +} + +static int __init pgd_cache_init(void) +{ + /* + * Naturally aligned pgds required by the architecture. + */ + if (PGD_SIZE != PAGE_SIZE) + pgd_cache = kmem_cache_create("pgd_cache", PGD_SIZE, PGD_SIZE, + SLAB_PANIC, NULL); + return 0; } +core_initcall(pgd_cache_init); -- cgit v1.2.3 From 971a5b6fe634bb7b617d8c5f25b6a3ddbc600194 Mon Sep 17 00:00:00 2001 From: Victor Kamensky Date: Tue, 14 Oct 2014 06:55:05 +0100 Subject: arm64: compat: fix compat types affecting struct compat_elf_prpsinfo The compat_elf_prpsinfo structure does not match the arch/arm struct elf_pspsinfo definition. As result NT_PRPSINFO note in core file created by arm64 kernel for aarch32 (compat) process has wrong size. So gdb cannot display command that caused process crash. Fix is to change size of __compat_uid_t, __compat_gid_t so it would match size of similar fields in arch/arm case. Signed-off-by: Victor Kamensky Acked-by: Arnd Bergmann Cc: Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/compat.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h index 253e33bc94fb..56de5aadede2 100644 --- a/arch/arm64/include/asm/compat.h +++ b/arch/arm64/include/asm/compat.h @@ -37,8 +37,8 @@ typedef s32 compat_ssize_t; typedef s32 compat_time_t; typedef s32 compat_clock_t; typedef s32 compat_pid_t; -typedef u32 __compat_uid_t; -typedef u32 __compat_gid_t; +typedef u16 __compat_uid_t; +typedef u16 __compat_gid_t; typedef u16 __compat_uid16_t; typedef u16 __compat_gid16_t; typedef u32 __compat_uid32_t; -- cgit v1.2.3 From c0260ba906c4dfbcccd6414c3e2c0e73a7d7e35a Mon Sep 17 00:00:00 2001 From: Steve Capper Date: Fri, 17 Oct 2014 15:27:38 +0100 Subject: arm64: mm: Correct fixmap pagetable types MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Compiling with STRICT_MM_TYPECHECKS gives the following arch/arm64/mm/ioremap.c: In function ‘early_ioremap_init’: arch/arm64/mm/ioremap.c:152:2: warning: passing argument 3 of ‘pud_populate’ from incompatible pointer type pud_populate(&init_mm, pud, bm_pmd); The data types for bm_pmd and bm_pud are incorrectly set to pte_t. This patch corrects these types. Signed-off-by: Steve Capper Signed-off-by: Catalin Marinas --- arch/arm64/mm/ioremap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm64/mm/ioremap.c b/arch/arm64/mm/ioremap.c index fa324bd5a5c4..4a07630a6616 100644 --- a/arch/arm64/mm/ioremap.c +++ b/arch/arm64/mm/ioremap.c @@ -105,10 +105,10 @@ EXPORT_SYMBOL(ioremap_cache); static pte_t bm_pte[PTRS_PER_PTE] __page_aligned_bss; #if CONFIG_ARM64_PGTABLE_LEVELS > 2 -static pte_t bm_pmd[PTRS_PER_PMD] __page_aligned_bss; +static pmd_t bm_pmd[PTRS_PER_PMD] __page_aligned_bss; #endif #if CONFIG_ARM64_PGTABLE_LEVELS > 3 -static pte_t bm_pud[PTRS_PER_PUD] __page_aligned_bss; +static pud_t bm_pud[PTRS_PER_PUD] __page_aligned_bss; #endif static inline pud_t * __init early_ioremap_pud(unsigned long addr) -- cgit v1.2.3 From b569c1c622c5e60c960a6ae5bd0880e0cdbd56b1 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Tue, 16 Sep 2014 08:48:50 +0100 Subject: net: bpf: arm64: address randomize and write protect JIT code This is the ARM64 variant for 314beb9bcab ("x86: bpf_jit_comp: secure bpf jit against spraying attacks"). Thanks to commit 11d91a770f1f ("arm64: Add CONFIG_DEBUG_SET_MODULE_RONX support") which added necessary infrastructure, we can now implement RO marking of eBPF generated JIT image pages and randomize start offset for the JIT code, so that it does not reside directly on a page boundary anymore. Likewise, the holes are filled with illegal instructions: here we use BRK #0x100 (opcode 0xd4202000) to trigger a fault in the kernel (unallocated BRKs would trigger a fault through do_debug_exception). This seems more reliable as we don't have a guaranteed undefined instruction space on ARM64. This is basically the ARM64 variant of what we already have in ARM via commit 55309dd3d4cd ("net: bpf: arm: address randomize and write protect JIT code"). Moreover, this commit also presents a merge resolution due to conflicts with commit 60a3b2253c41 ("net: bpf: make eBPF interpreter images read-only") as we don't use kfree() in bpf_jit_free() anymore to release the locked bpf_prog structure, but instead bpf_prog_unlock_free() through a different allocator. JIT tested on aarch64 with BPF test suite. Reference: http://mainisusuallyafunction.blogspot.com/2012/11/attacking-hardened-linux-systems-with.html Signed-off-by: Daniel Borkmann Reviewed-by: Zi Shen Lim Acked-by: Will Deacon Cc: David S. Miller Cc: Alexei Starovoitov Signed-off-by: Catalin Marinas --- arch/arm64/net/bpf_jit_comp.c | 39 ++++++++++++++++++++++++++++++--------- 1 file changed, 30 insertions(+), 9 deletions(-) (limited to 'arch') diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 7ae33545535b..71088952ed27 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -19,12 +19,13 @@ #define pr_fmt(fmt) "bpf_jit: " fmt #include -#include #include #include #include + #include #include +#include #include "bpf_jit.h" @@ -119,6 +120,14 @@ static inline int bpf2a64_offset(int bpf_to, int bpf_from, return to - from; } +static void jit_fill_hole(void *area, unsigned int size) +{ + u32 *ptr; + /* We are guaranteed to have aligned memory. */ + for (ptr = area; size >= sizeof(u32); size -= sizeof(u32)) + *ptr++ = cpu_to_le32(AARCH64_BREAK_FAULT); +} + static inline int epilogue_offset(const struct jit_ctx *ctx) { int to = ctx->offset[ctx->prog->len - 1]; @@ -613,8 +622,10 @@ void bpf_jit_compile(struct bpf_prog *prog) void bpf_int_jit_compile(struct bpf_prog *prog) { + struct bpf_binary_header *header; struct jit_ctx ctx; int image_size; + u8 *image_ptr; if (!bpf_jit_enable) return; @@ -636,23 +647,25 @@ void bpf_int_jit_compile(struct bpf_prog *prog) goto out; build_prologue(&ctx); - build_epilogue(&ctx); /* Now we know the actual image size. */ image_size = sizeof(u32) * ctx.idx; - ctx.image = module_alloc(image_size); - if (unlikely(ctx.image == NULL)) + header = bpf_jit_binary_alloc(image_size, &image_ptr, + sizeof(u32), jit_fill_hole); + if (header == NULL) goto out; /* 2. Now, the actual pass. */ + ctx.image = (u32 *)image_ptr; ctx.idx = 0; + build_prologue(&ctx); ctx.body_offset = ctx.idx; if (build_body(&ctx)) { - module_free(NULL, ctx.image); + bpf_jit_binary_free(header); goto out; } @@ -663,17 +676,25 @@ void bpf_int_jit_compile(struct bpf_prog *prog) bpf_jit_dump(prog->len, image_size, 2, ctx.image); bpf_flush_icache(ctx.image, ctx.image + ctx.idx); + + set_memory_ro((unsigned long)header, header->pages); prog->bpf_func = (void *)ctx.image; prog->jited = 1; - out: kfree(ctx.offset); } void bpf_jit_free(struct bpf_prog *prog) { - if (prog->jited) - module_free(NULL, prog->bpf_func); + unsigned long addr = (unsigned long)prog->bpf_func & PAGE_MASK; + struct bpf_binary_header *header = (void *)addr; + + if (!prog->jited) + goto free_filter; + + set_memory_rw(addr, header->pages); + bpf_jit_binary_free(header); - kfree(prog); +free_filter: + bpf_prog_unlock_free(prog); } -- cgit v1.2.3 From d65a634a0acefd6b6e8718e2399b6771ccb17b24 Mon Sep 17 00:00:00 2001 From: Zi Shen Lim Date: Tue, 16 Sep 2014 19:37:35 +0100 Subject: arm64: bpf: add 'shift by register' instructions Commit 72b603ee8cfc ("bpf: x86: add missing 'shift by register' instructions to x64 eBPF JIT") noted support for 'shift by register' in eBPF and added support for it for x64. Let's enable this for arm64 as well. The arm64 eBPF JIT compiler now passes the new 'shift by register' test case introduced in the same commit 72b603ee8cfc. Signed-off-by: Zi Shen Lim Cc: Will Deacon Cc: David S. Miller Cc: Alexei Starovoitov Signed-off-by: Catalin Marinas --- arch/arm64/net/bpf_jit.h | 8 ++++++-- arch/arm64/net/bpf_jit_comp.c | 12 ++++++++++++ 2 files changed, 18 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm64/net/bpf_jit.h b/arch/arm64/net/bpf_jit.h index 2134f7e6c288..de0a81a539a0 100644 --- a/arch/arm64/net/bpf_jit.h +++ b/arch/arm64/net/bpf_jit.h @@ -144,8 +144,12 @@ /* Data-processing (2 source) */ /* Rd = Rn OP Rm */ -#define A64_UDIV(sf, Rd, Rn, Rm) aarch64_insn_gen_data2(Rd, Rn, Rm, \ - A64_VARIANT(sf), AARCH64_INSN_DATA2_UDIV) +#define A64_DATA2(sf, Rd, Rn, Rm, type) aarch64_insn_gen_data2(Rd, Rn, Rm, \ + A64_VARIANT(sf), AARCH64_INSN_DATA2_##type) +#define A64_UDIV(sf, Rd, Rn, Rm) A64_DATA2(sf, Rd, Rn, Rm, UDIV) +#define A64_LSLV(sf, Rd, Rn, Rm) A64_DATA2(sf, Rd, Rn, Rm, LSLV) +#define A64_LSRV(sf, Rd, Rn, Rm) A64_DATA2(sf, Rd, Rn, Rm, LSRV) +#define A64_ASRV(sf, Rd, Rn, Rm) A64_DATA2(sf, Rd, Rn, Rm, ASRV) /* Data-processing (3 source) */ /* Rd = Ra + Rn * Rm */ diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 71088952ed27..80cc76972798 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -261,6 +261,18 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) emit(A64_MUL(is64, tmp, tmp, src), ctx); emit(A64_SUB(is64, dst, dst, tmp), ctx); break; + case BPF_ALU | BPF_LSH | BPF_X: + case BPF_ALU64 | BPF_LSH | BPF_X: + emit(A64_LSLV(is64, dst, dst, src), ctx); + break; + case BPF_ALU | BPF_RSH | BPF_X: + case BPF_ALU64 | BPF_RSH | BPF_X: + emit(A64_LSRV(is64, dst, dst, src), ctx); + break; + case BPF_ALU | BPF_ARSH | BPF_X: + case BPF_ALU64 | BPF_ARSH | BPF_X: + emit(A64_ASRV(is64, dst, dst, src), ctx); + break; /* dst = -dst */ case BPF_ALU | BPF_NEG: case BPF_ALU64 | BPF_NEG: -- cgit v1.2.3 From 30d3d94cc3d507a23dcb09e5c365464e4aa9f580 Mon Sep 17 00:00:00 2001 From: Zi Shen Lim Date: Tue, 16 Sep 2014 21:29:23 +0100 Subject: arm64: bpf: add 'load 64-bit immediate' instruction Commit 02ab695bb37e (net: filter: add "load 64-bit immediate" eBPF instruction) introduced a new eBPF instruction. Let's add support for this for arm64 as well. Our arm64 eBPF JIT compiler now passes the new "load 64-bit immediate" test case introduced in the same commit 02ab695bb37e. Signed-off-by: Zi Shen Lim Cc: Will Deacon Cc: David S. Miller Cc: Alexei Starovoitov Signed-off-by: Catalin Marinas --- arch/arm64/net/bpf_jit_comp.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'arch') diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 80cc76972798..618d2cdc2f1b 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -205,6 +205,12 @@ static void build_epilogue(struct jit_ctx *ctx) emit(A64_RET(A64_LR), ctx); } +/* JITs an eBPF instruction. + * Returns: + * 0 - successfully JITed an 8-byte eBPF instruction. + * >0 - successfully JITed a 16-byte eBPF instruction. + * <0 - failed to JIT. + */ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) { const u8 code = insn->code; @@ -464,6 +470,27 @@ emit_cond_jmp: emit(A64_B(jmp_offset), ctx); break; + /* dst = imm64 */ + case BPF_LD | BPF_IMM | BPF_DW: + { + const struct bpf_insn insn1 = insn[1]; + u64 imm64; + + if (insn1.code != 0 || insn1.src_reg != 0 || + insn1.dst_reg != 0 || insn1.off != 0) { + /* Note: verifier in BPF core must catch invalid + * instructions. + */ + pr_err_once("Invalid BPF_LD_IMM64 instruction\n"); + return -EINVAL; + } + + imm64 = (u64)insn1.imm << 32 | imm; + emit_a64_mov_i64(dst, imm64, ctx); + + return 1; + } + /* LDX: dst = *(size *)(src + off) */ case BPF_LDX | BPF_MEM | BPF_W: case BPF_LDX | BPF_MEM | BPF_H: @@ -615,6 +642,10 @@ static int build_body(struct jit_ctx *ctx) ctx->offset[i] = ctx->idx; ret = build_insn(insn, ctx); + if (ret > 0) { + i++; + continue; + } if (ret) return ret; } -- cgit v1.2.3 From 74c3deacb2a903bcb9d5a20dc885159142245010 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Sat, 11 Oct 2014 10:00:43 +0100 Subject: net: bpf: arm64: minor fix of type in jited Commit 286aad3c4014 ("net: bpf: be friendly to kmemcheck") changed the type of jited from a bitfield into a bool. As this commmit wasn't available at the time when arm64 eBPF JIT was merged, fix it up now as net is merged into mainline. Signed-off-by: Daniel Borkmann Cc: Zi Shen Lim Signed-off-by: Catalin Marinas --- arch/arm64/net/bpf_jit_comp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 618d2cdc2f1b..41f1e3e2ea24 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -722,7 +722,7 @@ void bpf_int_jit_compile(struct bpf_prog *prog) set_memory_ro((unsigned long)header, header->pages); prog->bpf_func = (void *)ctx.image; - prog->jited = 1; + prog->jited = true; out: kfree(ctx.offset); } -- cgit v1.2.3 From 69a160a0543fd569661048a8692c10afcdb1914b Mon Sep 17 00:00:00 2001 From: Carlo Caione Date: Sat, 20 Sep 2014 19:06:52 +0200 Subject: ARM: defconfig: update multi_v7_defconfig Update the multi_v7_defconfig enabling the watchdog driver for Meson SoCs. Signed-off-by: Carlo Caione Reviewed-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- arch/arm/configs/multi_v7_defconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 491b7d5523bf..9702b140ae04 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -261,6 +261,7 @@ CONFIG_WATCHDOG=y CONFIG_XILINX_WATCHDOG=y CONFIG_ORION_WATCHDOG=y CONFIG_SUNXI_WATCHDOG=y +CONFIG_MESON_WATCHDOG=y CONFIG_MFD_AS3722=y CONFIG_MFD_BCM590XX=y CONFIG_MFD_CROS_EC=y -- cgit v1.2.3 From a5466d7bba9af83a82cc7c081b2a7d557cde3204 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Tue, 21 Oct 2014 10:21:54 +0100 Subject: MIPS: cp1emu: Fix ISA restrictions for cop1x_op instructions Commit 08a07904e1828 ("MIPS: math-emu: Remove most ifdefery") removed the #ifdef ISA conditions and switched to runtime detection. However, according to the instruction set manual, the cop1x_op instructions are available in >=MIPS32r2 as well. This fixes a problem on MIPS32r2 with the ntpd package which failed to execute with a SIGILL exit code due to the fact that a madd.d instruction was not being emulated. Signed-off-by: Markos Chandras Fixes: 08a07904e1828 ("MIPS: math-emu: Remove most ifdefery") Cc: # v3.16+ Cc: linux-mips@linux-mips.org Reviewed-by: Paul Burton Reviewed-by: James Hogan Cc: Markos Chandras Patchwork: https://patchwork.linux-mips.org/patch/8173/ Signed-off-by: Ralf Baechle --- arch/mips/math-emu/cp1emu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index 7a4727795a70..51a0fde4bec1 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -1023,7 +1023,7 @@ emul: goto emul; case cop1x_op: - if (cpu_has_mips_4_5 || cpu_has_mips64) + if (cpu_has_mips_4_5 || cpu_has_mips64 || cpu_has_mips32r2) /* its one of ours */ goto emul; @@ -1068,7 +1068,7 @@ emul: break; case cop1x_op: - if (!cpu_has_mips_4_5 && !cpu_has_mips64) + if (!cpu_has_mips_4_5 && !cpu_has_mips64 && !cpu_has_mips32r2) return SIGILL; sig = fpux_emu(xcp, ctx, ir, fault_addr); -- cgit v1.2.3 From 507a369e126bf094ffcef77735a56e25a61e9041 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Tue, 21 Oct 2014 13:23:11 +0100 Subject: MIPS: Lasat: Add missing CONFIG_PROC_FS dependency to PICVUE_PROC The picvue_proc.c file creates the /proc interface for the PICVUE LCD display driver. As a result of which, it needs to depend on the PROC_FS symbol to avoid build problems like the following one when CONFIG_PROC_FS is not enabled. arch/mips/lasat/picvue_proc.c:26:14: error: 'pvc_linename' defined but not used [-Werror=unused-variable] static char *pvc_linename[PVC_NLINES] = {"line1", "line2"}; ^ Signed-off-by: Markos Chandras Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8174/ Signed-off-by: Ralf Baechle --- arch/mips/lasat/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/mips/lasat/Kconfig b/arch/mips/lasat/Kconfig index 1d2ee8a9be13..8776d0a34274 100644 --- a/arch/mips/lasat/Kconfig +++ b/arch/mips/lasat/Kconfig @@ -4,7 +4,7 @@ config PICVUE config PICVUE_PROC tristate "PICVUE LCD display driver /proc interface" - depends on PICVUE + depends on PICVUE && PROC_FS config DS1603 bool "DS1603 RTC driver" -- cgit v1.2.3 From 178c3dfe853a18391b029e6b62e1eed22be1871e Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 19 Oct 2014 22:42:42 +0100 Subject: ARM: fix some printk formats GCC 4.9 complains if we take the difference of two pointers, and it's printed with "%d". Fix this by using the proper flag - "t" for ptrdiff_t. Signed-off-by: Russell King --- arch/arm/mm/init.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 659c75d808dc..1dfcc0822074 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -559,10 +559,10 @@ void __init mem_init(void) #ifdef CONFIG_MODULES " modules : 0x%08lx - 0x%08lx (%4ld MB)\n" #endif - " .text : 0x%p" " - 0x%p" " (%4d kB)\n" - " .init : 0x%p" " - 0x%p" " (%4d kB)\n" - " .data : 0x%p" " - 0x%p" " (%4d kB)\n" - " .bss : 0x%p" " - 0x%p" " (%4d kB)\n", + " .text : 0x%p" " - 0x%p" " (%4td kB)\n" + " .init : 0x%p" " - 0x%p" " (%4td kB)\n" + " .data : 0x%p" " - 0x%p" " (%4td kB)\n" + " .bss : 0x%p" " - 0x%p" " (%4td kB)\n", MLK(UL(CONFIG_VECTORS_BASE), UL(CONFIG_VECTORS_BASE) + (PAGE_SIZE)), -- cgit v1.2.3 From ceab3fe69408cb98f437dad3b4b4bb79434370ef Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Tue, 21 Oct 2014 17:01:07 +0100 Subject: arm64: Fix compilation error on UP builds In file included from ./arch/arm64/include/asm/irq_work.h:4:0, from include/linux/irq_work.h:46, from include/linux/perf_event.h:49, from include/linux/ftrace_event.h:9, from include/trace/syscall.h:6, from include/linux/syscalls.h:81, from init/main.c:18: ./arch/arm64/include/asm/smp.h:24:3: error: #error " included in non-SMP build" # error " included in non-SMP build" Signed-off-by: Catalin Marinas Fixes: 3631073659d0 ("arm64: Tell irq work about self IPI support") Reported-by: Guenter Roeck Tested-by: Guenter Roeck --- arch/arm64/include/asm/irq_work.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'arch') diff --git a/arch/arm64/include/asm/irq_work.h b/arch/arm64/include/asm/irq_work.h index 8e24ef3f7c82..b4f6b19a8a68 100644 --- a/arch/arm64/include/asm/irq_work.h +++ b/arch/arm64/include/asm/irq_work.h @@ -1,6 +1,8 @@ #ifndef __ASM_IRQ_WORK_H #define __ASM_IRQ_WORK_H +#ifdef CONFIG_SMP + #include static inline bool arch_irq_work_has_interrupt(void) @@ -8,4 +10,13 @@ static inline bool arch_irq_work_has_interrupt(void) return !!__smp_cross_call; } +#else + +static inline bool arch_irq_work_has_interrupt(void) +{ + return false; +} + +#endif + #endif /* __ASM_IRQ_WORK_H */ -- cgit v1.2.3 From 3a4356c0c042a5f340c8d6ee1a4feaa1c8e51ea2 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Wed, 1 Oct 2014 05:44:48 -0500 Subject: arm: socfpga: fix fetching cpu1start_addr for SMP When CPU1 is brought out of reset, it's MMU is not turned on yet, so it will only be able to use physical addresses. For systems with that have the MMU page configured for 0xC0000000, 0x80000000, or 0x40000000 "BIC 0x40000000" will work just fine, as it was just converting the virtual address of &cpu1start_addr into a physical address, ie. 0xC0000000 became 0x80000000. So for systems where the SDRAM controller was able to do a wrap-around access, this was working fine, as it was just dropping the MSB, but for systems where out of bounds memory access is not allowed, this would not allow CPU1 to correctly fetch &cpu1start_addr. This patch fixes the secondary_trampoline code to correctly fetch the physical address of cpu1start_addr directly. The patch will subtract the correct PAGE_OFFSET from &cpu1start_addr. And since on this platform, the physical memory will always start at 0x0, subtracting PAGE_OFFSET from &cpu1start_addr will allow CPU1 to correctly fetch the value of cpu1start_addr. While at it, change the name of cpu1start_addr to socfpga_cpu1start_addr to avoid any future naming collisions for multiplatform image. Signed-off-by: Dinh Nguyen --- v4: Updated commit log to correctly lay out the usage of PAGE_OFFSET and add comments to the same effect. v3: Used PAGE_OFFSET to get the physical address v2: Correctly get the physical address instead of just a BIC hack. --- arch/arm/mach-socfpga/core.h | 2 +- arch/arm/mach-socfpga/headsmp.S | 25 +++++++++++++++---------- arch/arm/mach-socfpga/platsmp.c | 4 ++-- arch/arm/mach-socfpga/socfpga.c | 4 ++-- 4 files changed, 20 insertions(+), 15 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-socfpga/core.h b/arch/arm/mach-socfpga/core.h index 572b8f719ffb..60c443dadb58 100644 --- a/arch/arm/mach-socfpga/core.h +++ b/arch/arm/mach-socfpga/core.h @@ -40,7 +40,7 @@ extern void __iomem *rst_manager_base_addr; extern struct smp_operations socfpga_smp_ops; extern char secondary_trampoline, secondary_trampoline_end; -extern unsigned long cpu1start_addr; +extern unsigned long socfpga_cpu1start_addr; #define SOCFPGA_SCU_VIRT_BASE 0xfffec000 diff --git a/arch/arm/mach-socfpga/headsmp.S b/arch/arm/mach-socfpga/headsmp.S index 95c115d8b5ee..f65ea0af4af3 100644 --- a/arch/arm/mach-socfpga/headsmp.S +++ b/arch/arm/mach-socfpga/headsmp.S @@ -9,21 +9,26 @@ */ #include #include +#include .arch armv7-a ENTRY(secondary_trampoline) - movw r2, #:lower16:cpu1start_addr - movt r2, #:upper16:cpu1start_addr - - /* The socfpga VT cannot handle a 0xC0000000 page offset when loading - the cpu1start_addr, we bit clear it. Tested on HW and VT. */ - bic r2, r2, #0x40000000 - - ldr r0, [r2] - ldr r1, [r0] - bx r1 + /* CPU1 will always fetch from 0x0 when it is brought out of reset. + * Thus, we can just subtract the PAGE_OFFSET to get the physical + * address of &cpu1start_addr. This would not work for platforms + * where the physical memory does not start at 0x0. + */ + adr r0, 1f + ldmia r0, {r1, r2} + sub r2, r2, #PAGE_OFFSET + ldr r3, [r2] + ldr r4, [r3] + bx r4 + .align +1: .long . + .long socfpga_cpu1start_addr ENTRY(secondary_trampoline_end) ENTRY(socfpga_secondary_startup) diff --git a/arch/arm/mach-socfpga/platsmp.c b/arch/arm/mach-socfpga/platsmp.c index 5356a72bc8ce..16ca97b039f9 100644 --- a/arch/arm/mach-socfpga/platsmp.c +++ b/arch/arm/mach-socfpga/platsmp.c @@ -33,11 +33,11 @@ static int socfpga_boot_secondary(unsigned int cpu, struct task_struct *idle) { int trampoline_size = &secondary_trampoline_end - &secondary_trampoline; - if (cpu1start_addr) { + if (socfpga_cpu1start_addr) { memcpy(phys_to_virt(0), &secondary_trampoline, trampoline_size); __raw_writel(virt_to_phys(socfpga_secondary_startup), - (sys_manager_base_addr + (cpu1start_addr & 0x000000ff))); + (sys_manager_base_addr + (socfpga_cpu1start_addr & 0x000000ff))); flush_cache_all(); smp_wmb(); diff --git a/arch/arm/mach-socfpga/socfpga.c b/arch/arm/mach-socfpga/socfpga.c index adbf38314ca8..383d61e138af 100644 --- a/arch/arm/mach-socfpga/socfpga.c +++ b/arch/arm/mach-socfpga/socfpga.c @@ -29,7 +29,7 @@ void __iomem *socfpga_scu_base_addr = ((void __iomem *)(SOCFPGA_SCU_VIRT_BASE)); void __iomem *sys_manager_base_addr; void __iomem *rst_manager_base_addr; -unsigned long cpu1start_addr; +unsigned long socfpga_cpu1start_addr; static struct map_desc scu_io_desc __initdata = { .virtual = SOCFPGA_SCU_VIRT_BASE, @@ -70,7 +70,7 @@ void __init socfpga_sysmgr_init(void) np = of_find_compatible_node(NULL, NULL, "altr,sys-mgr"); if (of_property_read_u32(np, "cpu1-start-addr", - (u32 *) &cpu1start_addr)) + (u32 *) &socfpga_cpu1start_addr)) pr_err("SMP: Need cpu1-start-addr in device tree.\n"); sys_manager_base_addr = of_iomap(np, 0); -- cgit v1.2.3 From 6643773ce1a17c99a3ce29ee8ac2b114d2ba771f Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Tue, 21 Oct 2014 14:25:38 +1100 Subject: powerpc/mm: Fix build error with hugetlfs disabled MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit arch/powerpc/mm/slice.c:704:5: error: expected identifier or ‘(’ before numeric constant int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, ^ make[1]: *** [arch/powerpc/mm/slice.o] Error 1 make: *** [arch/powerpc/mm/slice.o] Error 2 This got introduced via 1217d34b531c76362217057ca70a8ce8950574e0 "powerpc: Ensure global functions include their prototype". We started including linux/hugetlb.h with that patch and now we have #define is_hugepage_only_range(mm, addr, len) 0 with hugetlbfs disabled. Fixes: 1217d34b531c ("powerpc: Ensure global functions include their prototype") Signed-off-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman --- arch/powerpc/mm/slice.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c index 8d7bda94d196..ded0ea1afde4 100644 --- a/arch/powerpc/mm/slice.c +++ b/arch/powerpc/mm/slice.c @@ -682,6 +682,7 @@ void slice_set_range_psize(struct mm_struct *mm, unsigned long start, slice_convert(mm, mask, psize); } +#ifdef CONFIG_HUGETLB_PAGE /* * is_hugepage_only_range() is used by generic code to verify whether * a normal mmap mapping (non hugetlbfs) is valid on a given area. @@ -726,4 +727,4 @@ int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, #endif return !slice_check_fit(mask, available); } - +#endif -- cgit v1.2.3 From ca5f1d16a51900d23d2cf834d3aa62dfe3a37881 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Tue, 21 Oct 2014 14:25:59 +1100 Subject: powerpc/mm: Remove redundant #if case Remove the check of CONFIG_PPC_SUBPAGE_PROT when deciding if is_hugepage_only_range() is extern or inline. The extern version is in slice.c and is built if CONFIG_PPC_MM_SLICES=y. There was no build break possible because CONFIG_PPC_SUBPAGE_PROT is only selectable under conditions which also mean CONFIG_PPC_MM_SLICES will be selected. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/hugetlb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h index 623f2971ce0e..766b77d527ac 100644 --- a/arch/powerpc/include/asm/hugetlb.h +++ b/arch/powerpc/include/asm/hugetlb.h @@ -71,7 +71,7 @@ pte_t *huge_pte_offset_and_shift(struct mm_struct *mm, void flush_dcache_icache_hugepage(struct page *page); -#if defined(CONFIG_PPC_MM_SLICES) || defined(CONFIG_PPC_SUBPAGE_PROT) +#if defined(CONFIG_PPC_MM_SLICES) int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, unsigned long len); #else -- cgit v1.2.3 From fcbb539f279f7d854bd49819b889fea0612909f8 Mon Sep 17 00:00:00 2001 From: Pranith Kumar Date: Fri, 10 Oct 2014 01:53:45 -0400 Subject: powerpc: Wire up sys_bpf() syscall This patch wires up the new syscall sys_bpf() on powerpc. Passes the tests in samples/bpf: #0 add+sub+mul OK #1 unreachable OK #2 unreachable2 OK #3 out of range jump OK #4 out of range jump2 OK #5 test1 ld_imm64 OK #6 test2 ld_imm64 OK #7 test3 ld_imm64 OK #8 test4 ld_imm64 OK #9 test5 ld_imm64 OK #10 no bpf_exit OK #11 loop (back-edge) OK #12 loop2 (back-edge) OK #13 conditional loop OK #14 read uninitialized register OK #15 read invalid register OK #16 program doesn't init R0 before exit OK #17 stack out of bounds OK #18 invalid call insn1 OK #19 invalid call insn2 OK #20 invalid function call OK #21 uninitialized stack1 OK #22 uninitialized stack2 OK #23 check valid spill/fill OK #24 check corrupted spill/fill OK #25 invalid src register in STX OK #26 invalid dst register in STX OK #27 invalid dst register in ST OK #28 invalid src register in LDX OK #29 invalid dst register in LDX OK #30 junk insn OK #31 junk insn2 OK #32 junk insn3 OK #33 junk insn4 OK #34 junk insn5 OK #35 misaligned read from stack OK #36 invalid map_fd for function call OK #37 don't check return value before access OK #38 access memory with incorrect alignment OK #39 sometimes access memory with incorrect alignment OK #40 jump test 1 OK #41 jump test 2 OK #42 jump test 3 OK #43 jump test 4 OK Signed-off-by: Pranith Kumar [mpe: test using samples/bpf] Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/systbl.h | 1 + arch/powerpc/include/asm/unistd.h | 2 +- arch/powerpc/include/uapi/asm/unistd.h | 1 + 3 files changed, 3 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h index 7d8a60068805..ce9577d693be 100644 --- a/arch/powerpc/include/asm/systbl.h +++ b/arch/powerpc/include/asm/systbl.h @@ -365,3 +365,4 @@ SYSCALL_SPU(renameat2) SYSCALL_SPU(seccomp) SYSCALL_SPU(getrandom) SYSCALL_SPU(memfd_create) +SYSCALL_SPU(bpf) diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h index 4e9af3fd43e7..e0da021caa00 100644 --- a/arch/powerpc/include/asm/unistd.h +++ b/arch/powerpc/include/asm/unistd.h @@ -12,7 +12,7 @@ #include -#define __NR_syscalls 361 +#define __NR_syscalls 362 #define __NR__exit __NR_exit #define NR_syscalls __NR_syscalls diff --git a/arch/powerpc/include/uapi/asm/unistd.h b/arch/powerpc/include/uapi/asm/unistd.h index 0688fc06e183..f55351f2e66e 100644 --- a/arch/powerpc/include/uapi/asm/unistd.h +++ b/arch/powerpc/include/uapi/asm/unistd.h @@ -383,5 +383,6 @@ #define __NR_seccomp 358 #define __NR_getrandom 359 #define __NR_memfd_create 360 +#define __NR_bpf 361 #endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */ -- cgit v1.2.3 From 106c67af2fb938880edbf43b49dabbd8d2534839 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Fri, 10 Oct 2014 15:50:21 +0200 Subject: ARM: at91/dt: sam9263: fix PLLB frequencies PLLB input and output ranges were wrongly copied from at91sam9261 as the datasheet didn't mention explicitly PLLB. Correct their values. This fixes USB. Reported-by: Andreas Henriksson Signed-off-by: Boris Brezillon Acked-by: Alexandre Belloni Tested-by: Andreas Henriksson Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91sam9263.dtsi | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi index d68b3c4862bc..51416c7d0625 100644 --- a/arch/arm/boot/dts/at91sam9263.dtsi +++ b/arch/arm/boot/dts/at91sam9263.dtsi @@ -122,9 +122,10 @@ interrupts-extended = <&pmc AT91_PMC_LOCKB>; clocks = <&main>; reg = <1>; - atmel,clk-input-range = <1000000 5000000>; + atmel,clk-input-range = <1000000 32000000>; #atmel,pll-clk-output-range-cells = <4>; - atmel,pll-clk-output-ranges = <70000000 130000000 1 1>; + atmel,pll-clk-output-ranges = <80000000 200000000 0 1>, + <190000000 240000000 2 1>; }; mck: masterck { -- cgit v1.2.3 From e2b6b35ee77522c2e15e770aded0b05c25ca0616 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Thu, 4 Oct 2012 14:22:23 +0100 Subject: arm64: vexpress: Add CLCD support to the ARMv8 model platform This patch enables CLCD support for the VE platform emulated by the ARMv8 software model (DT bindings are based on Pawel's vexpress patches) together with defconfig entries for SERIO_AMBAKMI and FB_ARMCLCD. Signed-off-by: Catalin Marinas Acked-by: Pawel Moll --- arch/arm64/boot/dts/rtsm_ve-motherboard.dtsi | 35 +++++++++++++++++++++++++++- arch/arm64/configs/defconfig | 2 ++ 2 files changed, 36 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm64/boot/dts/rtsm_ve-motherboard.dtsi b/arch/arm64/boot/dts/rtsm_ve-motherboard.dtsi index ac2cb2418025..c46cbb29f3c6 100644 --- a/arch/arm64/boot/dts/rtsm_ve-motherboard.dtsi +++ b/arch/arm64/boot/dts/rtsm_ve-motherboard.dtsi @@ -22,7 +22,7 @@ bank-width = <4>; }; - vram@2,00000000 { + v2m_video_ram: vram@2,00000000 { compatible = "arm,vexpress-vram"; reg = <2 0x00000000 0x00800000>; }; @@ -179,9 +179,42 @@ clcd@1f0000 { compatible = "arm,pl111", "arm,primecell"; reg = <0x1f0000 0x1000>; + interrupt-names = "combined"; interrupts = <14>; clocks = <&v2m_oscclk1>, <&v2m_clk24mhz>; clock-names = "clcdclk", "apb_pclk"; + arm,pl11x,framebuffer = <0x18000000 0x00180000>; + memory-region = <&v2m_video_ram>; + max-memory-bandwidth = <130000000>; /* 16bpp @ 63.5MHz */ + + port { + v2m_clcd_pads: endpoint { + remote-endpoint = <&v2m_clcd_panel>; + arm,pl11x,tft-r0g0b0-pads = <0 8 16>; + }; + }; + + panel { + compatible = "panel-dpi"; + + port { + v2m_clcd_panel: endpoint { + remote-endpoint = <&v2m_clcd_pads>; + }; + }; + + panel-timing { + clock-frequency = <63500127>; + hactive = <1024>; + hback-porch = <152>; + hfront-porch = <48>; + hsync-len = <104>; + vactive = <768>; + vback-porch = <23>; + vfront-porch = <3>; + vsync-len = <4>; + }; + }; }; virtio_block@0130000 { diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 9cd37de9aa8d..4ce602c2c6de 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -78,6 +78,7 @@ CONFIG_NET_XGENE=y # CONFIG_WLAN is not set CONFIG_INPUT_EVDEV=y # CONFIG_SERIO_SERPORT is not set +CONFIG_SERIO_AMBAKMI=y CONFIG_LEGACY_PTY_COUNT=16 CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y @@ -90,6 +91,7 @@ CONFIG_VIRTIO_CONSOLE=y CONFIG_REGULATOR=y CONFIG_REGULATOR_FIXED_VOLTAGE=y CONFIG_FB=y +CONFIG_FB_ARMCLCD=y CONFIG_FRAMEBUFFER_CONSOLE=y CONFIG_LOGO=y # CONFIG_LOGO_LINUX_MONO is not set -- cgit v1.2.3 From 5a1e73ffe57a86a196c08dffcbd9866776594a38 Mon Sep 17 00:00:00 2001 From: Varka Bhadram Date: Wed, 22 Oct 2014 09:31:15 +0530 Subject: pci: pci-lantiq: remove duplicate check on resource Sanity check on resource happening with devm_ioremap_resource() Signed-off-by: Varka Bhadram Acked-by: John Crispin Cc: linux-mips@linux-mips.org Cc: Varka Bhadram Patchwork: https://patchwork.linux-mips.org/patch/8199/ Signed-off-by: Ralf Baechle --- arch/mips/pci/pci-lantiq.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) (limited to 'arch') diff --git a/arch/mips/pci/pci-lantiq.c b/arch/mips/pci/pci-lantiq.c index 37fe8e7887e2..d3ed15b2b2d1 100644 --- a/arch/mips/pci/pci-lantiq.c +++ b/arch/mips/pci/pci-lantiq.c @@ -215,17 +215,12 @@ static int ltq_pci_probe(struct platform_device *pdev) pci_clear_flags(PCI_PROBE_ONLY); - res_cfg = platform_get_resource(pdev, IORESOURCE_MEM, 0); res_bridge = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (!res_cfg || !res_bridge) { - dev_err(&pdev->dev, "missing memory resources\n"); - return -EINVAL; - } - ltq_pci_membase = devm_ioremap_resource(&pdev->dev, res_bridge); if (IS_ERR(ltq_pci_membase)) return PTR_ERR(ltq_pci_membase); + res_cfg = platform_get_resource(pdev, IORESOURCE_MEM, 0); ltq_pci_mapped_cfg = devm_ioremap_resource(&pdev->dev, res_cfg); if (IS_ERR(ltq_pci_mapped_cfg)) return PTR_ERR(ltq_pci_mapped_cfg); -- cgit v1.2.3 From aa08ed55442ac6f9810c055e1474be34e785e556 Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Sun, 21 Sep 2014 15:38:43 +0300 Subject: MIPS: loongson2_cpufreq: Fix CPU clock rate setting mismerge During 3.16 merge window, parts of the commit 8e8acb32960f (MIPS/loongson2_cpufreq: Fix CPU clock rate setting) seem to have been deleted probably due to a mismerge, and as a result cpufreq is broken again on Loongson2 boards in 3.16 and newer kernels. Fix by repeating the fix. Signed-off-by: Aaro Koskinen Cc: stable@vger.kernel.org # 3.16 Cc: Rafael J. Wysocki Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/7835/ Signed-off-by: Ralf Baechle --- arch/mips/loongson/lemote-2f/clock.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/mips/loongson/lemote-2f/clock.c b/arch/mips/loongson/lemote-2f/clock.c index a217061beee3..462e34d46b4a 100644 --- a/arch/mips/loongson/lemote-2f/clock.c +++ b/arch/mips/loongson/lemote-2f/clock.c @@ -91,6 +91,7 @@ EXPORT_SYMBOL(clk_put); int clk_set_rate(struct clk *clk, unsigned long rate) { + unsigned int rate_khz = rate / 1000; struct cpufreq_frequency_table *pos; int ret = 0; int regval; @@ -107,9 +108,9 @@ int clk_set_rate(struct clk *clk, unsigned long rate) propagate_rate(clk); cpufreq_for_each_valid_entry(pos, loongson2_clockmod_table) - if (rate == pos->frequency) + if (rate_khz == pos->frequency) break; - if (rate != pos->frequency) + if (rate_khz != pos->frequency) return -ENOTSUPP; clk->rate = rate; -- cgit v1.2.3 From 9e0f162a36914937a937358fcb45e0609ef2bfc4 Mon Sep 17 00:00:00 2001 From: David Daney Date: Mon, 20 Oct 2014 15:34:23 -0700 Subject: MIPS: tlbex: Properly fix HUGE TLB Refill exception handler In commit 8393c524a25609 (MIPS: tlbex: Fix a missing statement for HUGETLB), the TLB Refill handler was fixed so that non-OCTEON targets would work properly with huge pages. The change was incorrect in that it broke the OCTEON case. The problem is shown here: xxx0: df7a0000 ld k0,0(k1) . . . xxxc0: df610000 ld at,0(k1) xxxc4: 335a0ff0 andi k0,k0,0xff0 xxxc8: e825ffcd bbit1 at,0x5,0x0 xxxcc: 003ad82d daddu k1,at,k0 . . . In the non-octeon case there is a destructive test for the huge PTE bit, and then at 0, $k0 is reloaded (that is what the 8393c524a25609 patch added). In the octeon case, we modify k1 in the branch delay slot, but we never need k0 again, so the new load is not needed, but since k1 is modified, if we do the load, we load from a garbage location and then get a nested TLB Refill, which is seen in userspace as either SIGBUS or SIGSEGV (depending on the garbage). The real fix is to only do this reloading if it is needed, and never where it is harmful. Signed-off-by: David Daney Cc: Huacai Chen Cc: Fuxin Zhang Cc: Zhangjin Wu Cc: stable@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8151/ Signed-off-by: Ralf Baechle --- arch/mips/mm/tlbex.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c index a08dd53a1cc5..b5f228e7eae6 100644 --- a/arch/mips/mm/tlbex.c +++ b/arch/mips/mm/tlbex.c @@ -1062,6 +1062,7 @@ static void build_update_entries(u32 **p, unsigned int tmp, unsigned int ptep) struct mips_huge_tlb_info { int huge_pte; int restore_scratch; + bool need_reload_pte; }; static struct mips_huge_tlb_info @@ -1076,6 +1077,7 @@ build_fast_tlb_refill_handler (u32 **p, struct uasm_label **l, rv.huge_pte = scratch; rv.restore_scratch = 0; + rv.need_reload_pte = false; if (check_for_high_segbits) { UASM_i_MFC0(p, tmp, C0_BADVADDR); @@ -1264,6 +1266,7 @@ static void build_r4000_tlb_refill_handler(void) } else { htlb_info.huge_pte = K0; htlb_info.restore_scratch = 0; + htlb_info.need_reload_pte = true; vmalloc_mode = refill_noscratch; /* * create the plain linear handler @@ -1300,7 +1303,8 @@ static void build_r4000_tlb_refill_handler(void) } #ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT uasm_l_tlb_huge_update(&l, p); - UASM_i_LW(&p, K0, 0, K1); + if (htlb_info.need_reload_pte) + UASM_i_LW(&p, htlb_info.huge_pte, 0, K1); build_huge_update_entries(&p, htlb_info.huge_pte, K1); build_huge_tlb_write_entry(&p, &l, &r, K0, tlb_random, htlb_info.restore_scratch); -- cgit v1.2.3 From b61cd31ee6cbe65f67a6ccba2bcbd3c702f52778 Mon Sep 17 00:00:00 2001 From: David Daney Date: Mon, 20 Oct 2014 15:44:24 -0700 Subject: MIPS: Octeon: Remove special case for simulator command line. There is no reason to have the kernel to append commands when running under the simulator, the simulator is perfectly capable of supplying the necessary command line arguments. Furthermore, if the simulator needs something different than what is hard coded in the kernel, it cannot get it if the kernel overrides it. Fix/Simplify the whole thing by removing this bit. Signed-off-by: David Daney Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8152/ Signed-off-by: Ralf Baechle --- arch/mips/cavium-octeon/setup.c | 9 --------- 1 file changed, 9 deletions(-) (limited to 'arch') diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c index 38f4c32e2816..5ebdb32d9a2b 100644 --- a/arch/mips/cavium-octeon/setup.c +++ b/arch/mips/cavium-octeon/setup.c @@ -806,15 +806,6 @@ void __init prom_init(void) #endif } - if (octeon_is_simulation()) { - /* - * The simulator uses a mtdram device pre filled with - * the filesystem. Also specify the calibration delay - * to avoid calculating it every time. - */ - strcat(arcs_cmdline, " rw root=1f00 slram=root,0x40000000,+1073741824"); - } - mips_hpt_frequency = octeon_get_clock_rate(); octeon_init_cvmcount(); -- cgit v1.2.3 From b47dcbdc5161d3d5756f430191e2840d9b855492 Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Wed, 15 Oct 2014 10:12:07 -0700 Subject: x86, apic: Handle a bad TSC more gracefully If the TSC is unusable or disabled, then this patch fixes: - Confusion while trying to clear old APIC interrupts. - Division by zero and incorrect programming of the TSC deadline timer. This fixes boot if the CPU has a TSC deadline timer but a missing or broken TSC. The failure to boot can be observed with qemu using -cpu qemu64,-tsc,+tsc-deadline This also happens to me in nested KVM for unknown reasons. With this patch, I can boot cleanly (although without a TSC). Signed-off-by: Andy Lutomirski Cc: Bandan Das Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/e2fa274e498c33988efac0ba8b7e3120f7f92d78.1413393027.git.luto@amacapital.net Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apic/apic.c | 4 ++-- arch/x86/kernel/tsc.c | 5 ++++- 2 files changed, 6 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 67760275544b..24b5894396a0 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1297,7 +1297,7 @@ void setup_local_APIC(void) unsigned int value, queued; int i, j, acked = 0; unsigned long long tsc = 0, ntsc; - long long max_loops = cpu_khz; + long long max_loops = cpu_khz ? cpu_khz : 1000000; if (cpu_has_tsc) rdtscll(tsc); @@ -1383,7 +1383,7 @@ void setup_local_APIC(void) break; } if (queued) { - if (cpu_has_tsc) { + if (cpu_has_tsc && cpu_khz) { rdtscll(ntsc); max_loops = (cpu_khz << 10) - (ntsc - tsc); } else diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index b6025f9e36c6..b7e50bba3bbb 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -1166,14 +1166,17 @@ void __init tsc_init(void) x86_init.timers.tsc_pre_init(); - if (!cpu_has_tsc) + if (!cpu_has_tsc) { + setup_clear_cpu_cap(X86_FEATURE_TSC_DEADLINE_TIMER); return; + } tsc_khz = x86_platform.calibrate_tsc(); cpu_khz = tsc_khz; if (!tsc_khz) { mark_tsc_unstable("could not calculate TSC khz"); + setup_clear_cpu_cap(X86_FEATURE_TSC_DEADLINE_TIMER); return; } -- cgit v1.2.3 From cd3d6438b4cdbe39fe8daf1a0abeebabcf9521d5 Mon Sep 17 00:00:00 2001 From: Stefan Hengelein Date: Mon, 20 Oct 2014 18:33:39 +0200 Subject: MIPS: MSP71xx: Remove compilation error when CONFIG_MIPS_MT is present When CONFIG_MIPS_MT is defined, code is enabled that tries to call 'set_vi_handler()'. This function is declared in but the header is never included. Therefore, the compilation breaks. arch/mips/pmcs-msp71xx/msp_irq.c:133: error: implicit declaration of function 'set_vi_handler' This error was found with vampyr. Signed-off-by: Stefan Hengelein Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: ryazanov.s.a@gmail.com Patchwork: https://patchwork.linux-mips.org/patch/8122/ Signed-off-by: Ralf Baechle --- arch/mips/pmcs-msp71xx/msp_irq.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/mips/pmcs-msp71xx/msp_irq.c b/arch/mips/pmcs-msp71xx/msp_irq.c index f914c753de21..8d53d7a2ed45 100644 --- a/arch/mips/pmcs-msp71xx/msp_irq.c +++ b/arch/mips/pmcs-msp71xx/msp_irq.c @@ -16,6 +16,7 @@ #include #include +#include #include -- cgit v1.2.3 From 44da7623e307bba3eefd7eaf11e605e15a923d72 Mon Sep 17 00:00:00 2001 From: Stefan Hengelein Date: Mon, 20 Oct 2014 15:11:39 +0200 Subject: MIPS: ath79: Fix compilation error when CONFIG_PCI is disabled When CONFIG_PCI is disabled, 'db120_pci_init()' had a different signature than when was enabled. Therefore, compilation failed when CONFIG_PCI was not present. arch/mips/ath79/mach-db120.c:132: error: too many arguments to function 'db120_pci_init' This error was found with vampyr. Signed-off-by: Stefan Hengelein Reviewed-by: Markos Chandras Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: geert@linux-m68k.org Patchwork: https://patchwork.linux-mips.org/patch/8119/ Signed-off-by: Ralf Baechle --- arch/mips/ath79/mach-db120.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/mips/ath79/mach-db120.c b/arch/mips/ath79/mach-db120.c index 4d661a1d2dae..9423f5aed287 100644 --- a/arch/mips/ath79/mach-db120.c +++ b/arch/mips/ath79/mach-db120.c @@ -113,7 +113,7 @@ static void __init db120_pci_init(u8 *eeprom) ath79_register_pci(); } #else -static inline void db120_pci_init(void) {} +static inline void db120_pci_init(u8 *eeprom) {} #endif /* CONFIG_PCI */ static void __init db120_setup(void) -- cgit v1.2.3 From 754f0da0dc33e8322f7f447aac8e16d581c324ab Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Mon, 13 Oct 2014 18:01:34 -0600 Subject: x86, intel-mid: Remove "weak" from function declarations For the following interfaces: get_penwell_ops() get_cloverview_ops() get_tangier_ops() there is only one implementation, so they do not need to be marked "weak". Remove the "weak" attribute from their declarations. Signed-off-by: Bjorn Helgaas Acked-by: Ingo Molnar CC: David Cohen CC: Kuppuswamy Sathyanarayanan CC: x86@kernel.org --- arch/x86/platform/intel-mid/intel_mid_weak_decls.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/x86/platform/intel-mid/intel_mid_weak_decls.h b/arch/x86/platform/intel-mid/intel_mid_weak_decls.h index 46aa25c8ce06..3c1c3866d82b 100644 --- a/arch/x86/platform/intel-mid/intel_mid_weak_decls.h +++ b/arch/x86/platform/intel-mid/intel_mid_weak_decls.h @@ -10,10 +10,9 @@ */ -/* __attribute__((weak)) makes these declarations overridable */ /* For every CPU addition a new get__ops interface needs * to be added. */ -extern void *get_penwell_ops(void) __attribute__((weak)); -extern void *get_cloverview_ops(void) __attribute__((weak)); -extern void *get_tangier_ops(void) __attribute__((weak)); +extern void *get_penwell_ops(void); +extern void *get_cloverview_ops(void); +extern void *get_tangier_ops(void); -- cgit v1.2.3 From 4fbf81ca53805ff89336c70bff58365ef1e1ab70 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Mon, 20 Oct 2014 10:17:04 -0600 Subject: ARC: kgdb: generic kgdb_arch_pc() suffices The ARC version of kgdb_arch_pc() is identical to the generic version in kernel/debug/debug_core.c. Drop the ARC version so we use the generic one. Signed-off-by: Vineet Gupta Signed-off-by: Bjorn Helgaas --- arch/arc/kernel/kgdb.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'arch') diff --git a/arch/arc/kernel/kgdb.c b/arch/arc/kernel/kgdb.c index a2ff5c5d1450..ecf6a7869375 100644 --- a/arch/arc/kernel/kgdb.c +++ b/arch/arc/kernel/kgdb.c @@ -158,11 +158,6 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, return -1; } -unsigned long kgdb_arch_pc(int exception, struct pt_regs *regs) -{ - return instruction_pointer(regs); -} - int kgdb_arch_init(void) { single_step_data.armed = 0; -- cgit v1.2.3 From d11ac1d2d556ca8495e06d7c00fe5a96e4934e98 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Wed, 22 Oct 2014 13:00:42 -0500 Subject: ARM: dts: socfpga: rename gpio nodes Since the Synopsys GPIO IP can support multiple ports of varying widths, it would make more sense to have the GPIO node DTS entry as this: gpio0: gpio@ff708000{ porta{ }; }; Also, this is documented in the snps-dwapb-gpio.txt. Suggested-by: Doug Anderson Reviewed-by: Doug Anderson Signed-off-by: Dinh Nguyen --- arch/arm/boot/dts/socfpga.dtsi | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/socfpga.dtsi b/arch/arm/boot/dts/socfpga.dtsi index 45fce2cf6fed..4472fd92685c 100644 --- a/arch/arm/boot/dts/socfpga.dtsi +++ b/arch/arm/boot/dts/socfpga.dtsi @@ -547,7 +547,7 @@ status = "disabled"; }; - gpio@ff708000 { + gpio0: gpio@ff708000 { #address-cells = <1>; #size-cells = <0>; compatible = "snps,dw-apb-gpio"; @@ -555,7 +555,7 @@ clocks = <&per_base_clk>; status = "disabled"; - gpio0: gpio-controller@0 { + porta: gpio-controller@0 { compatible = "snps,dw-apb-gpio-port"; gpio-controller; #gpio-cells = <2>; @@ -567,7 +567,7 @@ }; }; - gpio@ff709000 { + gpio1: gpio@ff709000 { #address-cells = <1>; #size-cells = <0>; compatible = "snps,dw-apb-gpio"; @@ -575,7 +575,7 @@ clocks = <&per_base_clk>; status = "disabled"; - gpio1: gpio-controller@0 { + portb: gpio-controller@0 { compatible = "snps,dw-apb-gpio-port"; gpio-controller; #gpio-cells = <2>; @@ -587,7 +587,7 @@ }; }; - gpio@ff70a000 { + gpio2: gpio@ff70a000 { #address-cells = <1>; #size-cells = <0>; compatible = "snps,dw-apb-gpio"; @@ -595,7 +595,7 @@ clocks = <&per_base_clk>; status = "disabled"; - gpio2: gpio-controller@0 { + portc: gpio-controller@0 { compatible = "snps,dw-apb-gpio-port"; gpio-controller; #gpio-cells = <2>; -- cgit v1.2.3 From 23920c0552a462a095b9afa044ebedf8f9201c53 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Thu, 16 Oct 2014 14:54:51 -0500 Subject: ARM: dts: socfpga: Fix SD card detect Without this patch, the booting the SOCFPGA platform would hang at the SDMMC driver loading. The issue, debugged by Doug Anderson, turned out to be that the GPIO bank used by the SD card-detect was not set to status="okay". Also update the cd-gpios to point to portb of the &gpio1 GPIO IP. Suggested-by: Doug Anderson Reviewed-by: Doug Anderson Signed-off-by: Dinh Nguyen --- v4: Use &gpio1 to set status="okay" and update cd-gpio=&portb v3: Correctly degugged the issue to be a gpio node not having status="okay" --- arch/arm/boot/dts/socfpga_cyclone5_socdk.dts | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts index d7296a5f750c..d91c9437ba19 100644 --- a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts +++ b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts @@ -53,6 +53,10 @@ rxc-skew-ps = <2000>; }; +&gpio1 { + status = "okay"; +}; + &i2c0 { status = "okay"; @@ -69,7 +73,7 @@ }; &mmc0 { - cd-gpios = <&gpio1 18 0>; + cd-gpios = <&portb 18 0>; }; &usb1 { -- cgit v1.2.3 From efb4a44e24df2b98464977aee5be41148936fc7c Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Thu, 16 Oct 2014 14:43:53 -0500 Subject: ARM: dts: socfpga: Add a 3.3V fixed regulator node Without the 3.3V regulator node, the SDMMC driver will give these warnings: dw_mmc ff704000.dwmmc0: No vmmc regulator found dw_mmc ff704000.dwmmc0: No vqmmc regulator found This patch adds the regulator node, and points the SD/MMC to the regulator. Signed-off-by: Dinh Nguyen Reviewed-by: Doug Anderson --- v3: Rename nodes to have schematic-name_regulator and remove "boot-on" and "always-on" v2: Move the regulator nodes to their respective board dts file and correctly rename them to match the schematic --- arch/arm/boot/dts/socfpga_arria5.dtsi | 2 +- arch/arm/boot/dts/socfpga_arria5_socdk.dts | 12 ++++++++++++ arch/arm/boot/dts/socfpga_cyclone5_socdk.dts | 9 +++++++++ arch/arm/boot/dts/socfpga_cyclone5_sockit.dts | 12 ++++++++++++ 4 files changed, 34 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/socfpga_arria5.dtsi b/arch/arm/boot/dts/socfpga_arria5.dtsi index 03e8268ae219..1907cc600452 100644 --- a/arch/arm/boot/dts/socfpga_arria5.dtsi +++ b/arch/arm/boot/dts/socfpga_arria5.dtsi @@ -29,7 +29,7 @@ }; }; - dwmmc0@ff704000 { + mmc0: dwmmc0@ff704000 { num-slots = <1>; broken-cd; bus-width = <4>; diff --git a/arch/arm/boot/dts/socfpga_arria5_socdk.dts b/arch/arm/boot/dts/socfpga_arria5_socdk.dts index 27d551c384d0..ccaf41742fc3 100644 --- a/arch/arm/boot/dts/socfpga_arria5_socdk.dts +++ b/arch/arm/boot/dts/socfpga_arria5_socdk.dts @@ -37,6 +37,13 @@ */ ethernet0 = &gmac1; }; + + regulator_3_3v: 3-3-v-regulator { + compatible = "regulator-fixed"; + regulator-name = "3.3V"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + }; }; &gmac1 { @@ -68,6 +75,11 @@ }; }; +&mmc0 { + vmmc-supply = <®ulator_3_3v>; + vqmmc-supply = <®ulator_3_3v>; +}; + &usb1 { status = "okay"; }; diff --git a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts index d91c9437ba19..258865da8f6a 100644 --- a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts +++ b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts @@ -37,6 +37,13 @@ */ ethernet0 = &gmac1; }; + + regulator_3_3v: 3-3-v-regulator { + compatible = "regulator-fixed"; + regulator-name = "3.3V"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + }; }; &gmac1 { @@ -74,6 +81,8 @@ &mmc0 { cd-gpios = <&portb 18 0>; + vmmc-supply = <®ulator_3_3v>; + vqmmc-supply = <®ulator_3_3v>; }; &usb1 { diff --git a/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts b/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts index d26f155f5fd9..16ea6f5f2ab8 100644 --- a/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts +++ b/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts @@ -37,6 +37,13 @@ */ ethernet0 = &gmac1; }; + + regulator_3_3v: vcc3p3-regulator { + compatible = "regulator-fixed"; + regulator-name = "VCC3P3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + }; }; &gmac1 { @@ -53,6 +60,11 @@ rxc-skew-ps = <2000>; }; +&mmc0 { + vmmc-supply = <®ulator_3_3v>; + vqmmc-supply = <®ulator_3_3v>; +}; + &usb1 { status = "okay"; }; -- cgit v1.2.3 From 19d36c2152aaf093c97431b5b4d13d29305a63a3 Mon Sep 17 00:00:00 2001 From: Jeremy Kerr Date: Wed, 22 Oct 2014 11:32:52 +0800 Subject: powernv: Use _GLOBAL_TOC for opal wrappers Currently, we can't call opal wrappers from modules when using the LE ABIv2, which requires a TOC init. If we do we'll try and load the opal entry point using the wrong toc and probably explode or worse jump to the wrong address. Nothing in upstream is making opal calls from a module, but we do export one of the wrappers so we should fix this anyway. This change uses the _GLOBAL_TOC() macro (rather than _GLOBAL) for the opal wrappers, so that we can do non-local calls to them. Signed-off-by: Jeremy Kerr Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/opal-wrappers.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S index e9e2450c1fdd..feb549aa3eea 100644 --- a/arch/powerpc/platforms/powernv/opal-wrappers.S +++ b/arch/powerpc/platforms/powernv/opal-wrappers.S @@ -58,7 +58,7 @@ END_FTR_SECTION(0, 1); \ */ #define OPAL_CALL(name, token) \ - _GLOBAL(name); \ + _GLOBAL_TOC(name); \ mflr r0; \ std r0,16(r1); \ li r0,token; \ -- cgit v1.2.3 From cdb685ad44996e9a113a10002cb42d40ff29db99 Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Tue, 14 Oct 2014 00:42:08 +0300 Subject: MIPS: ptrace.h: Add a missing include Commit a79ebea62010 (MIPS: ptrace: Fix user pt_regs definition, use in ptrace_{get, set}regs()) converted struct pt_regs to use __u64. Some userspace applications (e.g. GDB) include this file directly, and fail to see this type. Fix by including . The patch fixes the following build failure with GDB 7.8 when using GLIBC headers created against Linux 3.17: In file included from /home/aaro/los/work/shared/gdb-7.8/gdb/mips-linux-nat.c:37:0: /home/aaro/los/work/mips/rootfs/mips-linux-gnu/usr/include/asm/ptrace.h:32:2: error: unknown type name '__u64' __u64 regs[32]; ^ /home/aaro/los/work/mips/rootfs/mips-linux-gnu/usr/include/asm/ptrace.h:35:2: error: unknown type name '__u64' __u64 lo; ^ /home/aaro/los/work/mips/rootfs/mips-linux-gnu/usr/include/asm/ptrace.h:36:2: error: unknown type name '__u64' __u64 hi; ^ Fixes: a79ebea62010 ("MIPS: ptrace: Fix user pt_regs definition, use in ptrace_{get, set}regs()") Cc: stable@vger.kernel.org # 3.17 Signed-off-by: Aaro Koskinen Cc: Alex Smith Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8067/ Signed-off-by: Ralf Baechle --- arch/mips/include/uapi/asm/ptrace.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch') diff --git a/arch/mips/include/uapi/asm/ptrace.h b/arch/mips/include/uapi/asm/ptrace.h index bbcfb8ba8106..91a3d197ede3 100644 --- a/arch/mips/include/uapi/asm/ptrace.h +++ b/arch/mips/include/uapi/asm/ptrace.h @@ -9,6 +9,8 @@ #ifndef _UAPI_ASM_PTRACE_H #define _UAPI_ASM_PTRACE_H +#include + /* 0 - 31 are integer registers, 32 - 63 are fp registers. */ #define FPR_BASE 32 #define PC 64 -- cgit v1.2.3 From 3d1f9dda48d429d9b252e5df23c1ee23617461af Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Fri, 17 Oct 2014 10:49:38 +0100 Subject: MIPS: Sibyte: Include the swarm subdir to the sb1250 LittleSur builds Fixes the following randconfig build problem: arch/mips/built-in.o: In function `show_cpuinfo': proc.c:(.text+0xde84): undefined reference to `get_system_type' arch/mips/built-in.o: In function `sb1250_setup': (.init.text+0x428): undefined reference to `get_system_type' arch/mips/built-in.o: In function `setup_arch': (.init.text+0x178c): undefined reference to `plat_mem_setup' Makefile:930: recipe for target 'vmlinux' failed Signed-off-by: Markos Chandras Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8106/ Signed-off-by: Ralf Baechle --- arch/mips/sibyte/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/mips/sibyte/Makefile b/arch/mips/sibyte/Makefile index c8ed2c807e69..455c40d6d625 100644 --- a/arch/mips/sibyte/Makefile +++ b/arch/mips/sibyte/Makefile @@ -25,3 +25,4 @@ obj-$(CONFIG_SIBYTE_RHONE) += swarm/ obj-$(CONFIG_SIBYTE_SENTOSA) += swarm/ obj-$(CONFIG_SIBYTE_SWARM) += swarm/ obj-$(CONFIG_SIBYTE_BIGSUR) += swarm/ +obj-$(CONFIG_SIBYTE_LITTLESUR) += swarm/ -- cgit v1.2.3 From 239af7c7132a617f9dcd05da1dc92b96bc6d0645 Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Tue, 14 Oct 2014 11:00:18 +0200 Subject: x86/xen: avoid writing to freed memory after race in p2m handling In case a race was detected during allocation of a new p2m tree element in alloc_p2m() the new allocated mid_mfn page is freed without updating the pointer to the found value in the tree. This will result in overwriting the just freed page with the mfn of the p2m leaf. Signed-off-by: Juergen Gross Signed-off-by: David Vrabel --- arch/x86/xen/p2m.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 9f5983b01ed9..4534320e66e4 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -566,6 +566,7 @@ static bool alloc_p2m(unsigned long pfn) /* Separately check the mid mfn level */ unsigned long missing_mfn; unsigned long mid_mfn_mfn; + unsigned long old_mfn; mid_mfn = alloc_p2m_page(); if (!mid_mfn) @@ -575,10 +576,13 @@ static bool alloc_p2m(unsigned long pfn) missing_mfn = virt_to_mfn(p2m_mid_missing_mfn); mid_mfn_mfn = virt_to_mfn(mid_mfn); - if (cmpxchg(top_mfn_p, missing_mfn, mid_mfn_mfn) != missing_mfn) + old_mfn = cmpxchg(top_mfn_p, missing_mfn, mid_mfn_mfn); + if (old_mfn != missing_mfn) { free_p2m_page(mid_mfn); - else + mid_mfn = mfn_to_virt(old_mfn); + } else { p2m_top_mfn_p[topidx] = mid_mfn; + } } if (p2m_top[topidx][mididx] == p2m_identity || -- cgit v1.2.3 From 2c185687ab016954557aac80074f5d7f7f5d275c Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Tue, 14 Oct 2014 13:33:46 +0200 Subject: x86/xen: delay construction of mfn_list_list The 3 level p2m tree for the Xen tools is constructed very early at boot by calling xen_build_mfn_list_list(). Memory needed for this tree is allocated via extend_brk(). As this tree (other than the kernel internal p2m tree) is only needed for domain save/restore, live migration and crash dump analysis it doesn't matter whether it is constructed very early or just some milliseconds later when memory allocation is possible by other means. This patch moves the call of xen_build_mfn_list_list() just after calling xen_pagetable_p2m_copy() simplifying this function, too, as it doesn't have to bother with two parallel trees now. The same applies for some other internal functions. While simplifying code, make early_can_reuse_p2m_middle() static and drop the unused second parameter. p2m_mid_identity_mfn can be removed as well, it isn't used either. Signed-off-by: Juergen Gross Signed-off-by: David Vrabel --- arch/x86/xen/enlighten.c | 3 --- arch/x86/xen/mmu.c | 5 +++- arch/x86/xen/p2m.c | 65 +++++++++++------------------------------------- 3 files changed, 18 insertions(+), 55 deletions(-) (limited to 'arch') diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 1a3f0445432a..fac5e4f9607c 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1636,9 +1636,6 @@ asmlinkage __visible void __init xen_start_kernel(void) xen_raw_console_write("mapping kernel into physical memory\n"); xen_setup_kernel_pagetable((pgd_t *)xen_start_info->pt_base, xen_start_info->nr_pages); - /* Allocate and initialize top and mid mfn levels for p2m structure */ - xen_build_mfn_list_list(); - /* keep using Xen gdt for now; no urgent need to change it */ #ifdef CONFIG_X86_32 diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index f62af7647ec9..a8a1a3d08d4d 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1217,10 +1217,13 @@ static void __init xen_pagetable_p2m_copy(void) static void __init xen_pagetable_init(void) { paging_init(); - xen_setup_shared_info(); #ifdef CONFIG_X86_64 xen_pagetable_p2m_copy(); #endif + /* Allocate and initialize top and mid mfn levels for p2m structure */ + xen_build_mfn_list_list(); + + xen_setup_shared_info(); xen_post_allocator_init(); } static void xen_write_cr2(unsigned long cr2) diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 4534320e66e4..d1b3da2960ab 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -163,6 +163,7 @@ #include #include #include +#include #include #include @@ -181,21 +182,20 @@ static void __init m2p_override_init(void); unsigned long xen_max_p2m_pfn __read_mostly; +static unsigned long *p2m_mid_missing_mfn; +static unsigned long *p2m_top_mfn; +static unsigned long **p2m_top_mfn_p; + /* Placeholders for holes in the address space */ static RESERVE_BRK_ARRAY(unsigned long, p2m_missing, P2M_PER_PAGE); static RESERVE_BRK_ARRAY(unsigned long *, p2m_mid_missing, P2M_MID_PER_PAGE); -static RESERVE_BRK_ARRAY(unsigned long, p2m_mid_missing_mfn, P2M_MID_PER_PAGE); static RESERVE_BRK_ARRAY(unsigned long **, p2m_top, P2M_TOP_PER_PAGE); -static RESERVE_BRK_ARRAY(unsigned long, p2m_top_mfn, P2M_TOP_PER_PAGE); -static RESERVE_BRK_ARRAY(unsigned long *, p2m_top_mfn_p, P2M_TOP_PER_PAGE); static RESERVE_BRK_ARRAY(unsigned long, p2m_identity, P2M_PER_PAGE); static RESERVE_BRK_ARRAY(unsigned long *, p2m_mid_identity, P2M_MID_PER_PAGE); -static RESERVE_BRK_ARRAY(unsigned long, p2m_mid_identity_mfn, P2M_MID_PER_PAGE); RESERVE_BRK(p2m_mid, PAGE_SIZE * (MAX_DOMAIN_PAGES / (P2M_PER_PAGE * P2M_MID_PER_PAGE))); -RESERVE_BRK(p2m_mid_mfn, PAGE_SIZE * (MAX_DOMAIN_PAGES / (P2M_PER_PAGE * P2M_MID_PER_PAGE))); /* For each I/O range remapped we may lose up to two leaf pages for the boundary * violations and three mid pages to cover up to 3GB. With @@ -272,11 +272,11 @@ static void p2m_init(unsigned long *p2m) * Build the parallel p2m_top_mfn and p2m_mid_mfn structures * * This is called both at boot time, and after resuming from suspend: - * - At boot time we're called very early, and must use extend_brk() + * - At boot time we're called rather early, and must use alloc_bootmem*() * to allocate memory. * * - After resume we're called from within stop_machine, but the mfn - * tree should alreay be completely allocated. + * tree should already be completely allocated. */ void __ref xen_build_mfn_list_list(void) { @@ -287,20 +287,17 @@ void __ref xen_build_mfn_list_list(void) /* Pre-initialize p2m_top_mfn to be completely missing */ if (p2m_top_mfn == NULL) { - p2m_mid_missing_mfn = extend_brk(PAGE_SIZE, PAGE_SIZE); + p2m_mid_missing_mfn = alloc_bootmem_align(PAGE_SIZE, PAGE_SIZE); p2m_mid_mfn_init(p2m_mid_missing_mfn, p2m_missing); - p2m_mid_identity_mfn = extend_brk(PAGE_SIZE, PAGE_SIZE); - p2m_mid_mfn_init(p2m_mid_identity_mfn, p2m_identity); - p2m_top_mfn_p = extend_brk(PAGE_SIZE, PAGE_SIZE); + p2m_top_mfn_p = alloc_bootmem_align(PAGE_SIZE, PAGE_SIZE); p2m_top_mfn_p_init(p2m_top_mfn_p); - p2m_top_mfn = extend_brk(PAGE_SIZE, PAGE_SIZE); + p2m_top_mfn = alloc_bootmem_align(PAGE_SIZE, PAGE_SIZE); p2m_top_mfn_init(p2m_top_mfn); } else { /* Reinitialise, mfn's all change after migration */ p2m_mid_mfn_init(p2m_mid_missing_mfn, p2m_missing); - p2m_mid_mfn_init(p2m_mid_identity_mfn, p2m_identity); } for (pfn = 0; pfn < xen_max_p2m_pfn; pfn += P2M_PER_PAGE) { @@ -328,10 +325,9 @@ void __ref xen_build_mfn_list_list(void) /* * XXX boot-time only! We should never find * missing parts of the mfn tree after - * runtime. extend_brk() will BUG if we call - * it too late. + * runtime. */ - mid_mfn_p = extend_brk(PAGE_SIZE, PAGE_SIZE); + mid_mfn_p = alloc_bootmem_align(PAGE_SIZE, PAGE_SIZE); p2m_mid_mfn_init(mid_mfn_p, p2m_missing); p2m_top_mfn_p[topidx] = mid_mfn_p; @@ -415,7 +411,6 @@ void __init xen_build_dynamic_phys_to_machine(void) m2p_override_init(); } #ifdef CONFIG_X86_64 -#include unsigned long __init xen_revector_p2m_tree(void) { unsigned long va_start; @@ -477,7 +472,6 @@ unsigned long __init xen_revector_p2m_tree(void) copy_page(new, mid_p); p2m_top[topidx][mididx] = &mfn_list[pfn_free]; - p2m_top_mfn_p[topidx][mididx] = virt_to_mfn(&mfn_list[pfn_free]); pfn_free += P2M_PER_PAGE; @@ -610,7 +604,6 @@ static bool __init early_alloc_p2m(unsigned long pfn, bool check_boundary) { unsigned topidx, mididx, idx; unsigned long *p2m; - unsigned long *mid_mfn_p; topidx = p2m_top_index(pfn); mididx = p2m_mid_index(pfn); @@ -637,43 +630,21 @@ static bool __init early_alloc_p2m(unsigned long pfn, bool check_boundary) p2m_top[topidx][mididx] = p2m; - /* For save/restore we need to MFN of the P2M saved */ - - mid_mfn_p = p2m_top_mfn_p[topidx]; - WARN(mid_mfn_p[mididx] != virt_to_mfn(p2m_missing), - "P2M_TOP_P[%d][%d] != MFN of p2m_missing!\n", - topidx, mididx); - mid_mfn_p[mididx] = virt_to_mfn(p2m); - return true; } static bool __init early_alloc_p2m_middle(unsigned long pfn) { unsigned topidx = p2m_top_index(pfn); - unsigned long *mid_mfn_p; unsigned long **mid; mid = p2m_top[topidx]; - mid_mfn_p = p2m_top_mfn_p[topidx]; if (mid == p2m_mid_missing) { mid = extend_brk(PAGE_SIZE, PAGE_SIZE); p2m_mid_init(mid, p2m_missing); p2m_top[topidx] = mid; - - BUG_ON(mid_mfn_p != p2m_mid_missing_mfn); - } - /* And the save/restore P2M tables.. */ - if (mid_mfn_p == p2m_mid_missing_mfn) { - mid_mfn_p = extend_brk(PAGE_SIZE, PAGE_SIZE); - p2m_mid_mfn_init(mid_mfn_p, p2m_missing); - - p2m_top_mfn_p[topidx] = mid_mfn_p; - p2m_top_mfn[topidx] = virt_to_mfn(mid_mfn_p); - /* Note: we don't set mid_mfn_p[midix] here, - * look in early_alloc_p2m() */ } return true; } @@ -684,14 +655,13 @@ static bool __init early_alloc_p2m_middle(unsigned long pfn) * replace the P2M leaf with a p2m_missing or p2m_identity. * Stick the old page in the new P2M tree location. */ -bool __init early_can_reuse_p2m_middle(unsigned long set_pfn, unsigned long set_mfn) +static bool __init early_can_reuse_p2m_middle(unsigned long set_pfn) { unsigned topidx; unsigned mididx; unsigned ident_pfns; unsigned inv_pfns; unsigned long *p2m; - unsigned long *mid_mfn_p; unsigned idx; unsigned long pfn; @@ -737,11 +707,6 @@ bool __init early_can_reuse_p2m_middle(unsigned long set_pfn, unsigned long set_ found: /* Found one, replace old with p2m_identity or p2m_missing */ p2m_top[topidx][mididx] = (ident_pfns ? p2m_identity : p2m_missing); - /* And the other for save/restore.. */ - mid_mfn_p = p2m_top_mfn_p[topidx]; - /* NOTE: Even if it is a p2m_identity it should still be point to - * a page filled with INVALID_P2M_ENTRY entries. */ - mid_mfn_p[mididx] = virt_to_mfn(p2m_missing); /* Reset where we want to stick the old page in. */ topidx = p2m_top_index(set_pfn); @@ -756,8 +721,6 @@ found: p2m_init(p2m); p2m_top[topidx][mididx] = p2m; - mid_mfn_p = p2m_top_mfn_p[topidx]; - mid_mfn_p[mididx] = virt_to_mfn(p2m); return true; } @@ -767,7 +730,7 @@ bool __init early_set_phys_to_machine(unsigned long pfn, unsigned long mfn) if (!early_alloc_p2m_middle(pfn)) return false; - if (early_can_reuse_p2m_middle(pfn, mfn)) + if (early_can_reuse_p2m_middle(pfn)) return __set_phys_to_machine(pfn, mfn); if (!early_alloc_p2m(pfn, false /* boundary crossover OK!*/)) -- cgit v1.2.3 From 3a0e94f8ead4a58b9719db0f78e13d02d059604f Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Fri, 17 Oct 2014 13:16:06 +0200 Subject: x86/xen: avoid race in p2m handling When a new p2m leaf is allocated this leaf is linked into the p2m tree via cmpxchg. Unfortunately the compare value for checking the success of the update is read after checking for the need of a new leaf. It is possible that a new leaf has been linked into the tree concurrently in between. This could lead to a leaked memory page and to the loss of some p2m entries. Avoid the race by using the read compare value for checking the need of a new p2m leaf and use ACCESS_ONCE() to get it. There are other places which seem to need ACCESS_ONCE() to ensure proper operation. Change them accordingly. Signed-off-by: Juergen Gross Signed-off-by: David Vrabel --- arch/x86/xen/p2m.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index d1b3da2960ab..b456b048eca9 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -532,12 +532,13 @@ static bool alloc_p2m(unsigned long pfn) unsigned topidx, mididx; unsigned long ***top_p, **mid; unsigned long *top_mfn_p, *mid_mfn; + unsigned long *p2m_orig; topidx = p2m_top_index(pfn); mididx = p2m_mid_index(pfn); top_p = &p2m_top[topidx]; - mid = *top_p; + mid = ACCESS_ONCE(*top_p); if (mid == p2m_mid_missing) { /* Mid level is missing, allocate a new one */ @@ -552,7 +553,7 @@ static bool alloc_p2m(unsigned long pfn) } top_mfn_p = &p2m_top_mfn[topidx]; - mid_mfn = p2m_top_mfn_p[topidx]; + mid_mfn = ACCESS_ONCE(p2m_top_mfn_p[topidx]); BUG_ON(virt_to_mfn(mid_mfn) != *top_mfn_p); @@ -579,11 +580,10 @@ static bool alloc_p2m(unsigned long pfn) } } - if (p2m_top[topidx][mididx] == p2m_identity || - p2m_top[topidx][mididx] == p2m_missing) { + p2m_orig = ACCESS_ONCE(p2m_top[topidx][mididx]); + if (p2m_orig == p2m_identity || p2m_orig == p2m_missing) { /* p2m leaf page is missing */ unsigned long *p2m; - unsigned long *p2m_orig = p2m_top[topidx][mididx]; p2m = alloc_p2m_page(); if (!p2m) -- cgit v1.2.3 From 3251f20b897f955ab7f153181b4ebfbb2317cbb9 Mon Sep 17 00:00:00 2001 From: Boris Ostrovsky Date: Thu, 16 Oct 2014 17:02:15 -0400 Subject: x86/xen: Fix incorrect per_cpu accessor in xen_clocksource_read() Commit 89cbc76768c2 ("x86: Replace __get_cpu_var uses") replaced __get_cpu_var() with this_cpu_ptr() in xen_clocksource_read() in such a way that instead of accessing a structure pointed to by a per-cpu pointer we are trying to get to a per-cpu structure. __this_cpu_read() of the pointer is the more appropriate accessor. Signed-off-by: Boris Ostrovsky Signed-off-by: David Vrabel --- arch/x86/xen/time.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index a1d430b112b3..f473d268d387 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -158,7 +158,7 @@ cycle_t xen_clocksource_read(void) cycle_t ret; preempt_disable_notrace(); - src = this_cpu_ptr(&xen_vcpu->time); + src = &__this_cpu_read(xen_vcpu)->time; ret = pvclock_clocksource_read(src); preempt_enable_notrace(); return ret; -- cgit v1.2.3 From 1ea644c8f93f3435760d8b88c25d56475d8b7778 Mon Sep 17 00:00:00 2001 From: Martin Kelly Date: Thu, 16 Oct 2014 20:48:11 -0700 Subject: x86/xen: panic on bad Xen-provided memory map Panic if Xen provides a memory map with 0 entries. Although this is unlikely, it is better to catch the error at the point of seeing the map than later on as a symptom of some other crash. Signed-off-by: Martin Kelly Signed-off-by: David Vrabel --- arch/x86/xen/setup.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index af7216128d93..29834b3fd87f 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -595,6 +595,7 @@ char * __init xen_memory_setup(void) rc = 0; } BUG_ON(rc); + BUG_ON(memmap.nr_entries == 0); /* * Xen won't allow a 1:1 mapping to be created to UNUSABLE -- cgit v1.2.3 From 9d26024c964718c6307a96f387b24fc06dac4d91 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Tue, 16 Sep 2014 13:57:08 +0100 Subject: MIPS: idle: Remove leftover __pastwait symbol and its references The __pastwait symbol was only used by the address_is_in_r4k_wait_irqoff function but this is no longer used since the SMTC removal in commit b633648c5ad3 ('MIPS: MT: Remove SMTC support'). That symbol also led to build failures under certain random configuration due to the way the compiler compiled the r4k_wait_irqoff function. If that function was called multiple times, the __pastwait symbol was redefined breaking the build like this: CHK include/generated/compile.h CC arch/mips/kernel/idle.o {standard input}: Assembler messages: {standard input}:527: Error: symbol `__pastwait' is already defined Link: http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=1244879922.24479.30.camel%40falcon Signed-off-by: Markos Chandras Cc: linux-mips@linux-mips.org Cc: Markos Chandras Patchwork: https://patchwork.linux-mips.org/patch/7791/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/idle.h | 7 ------- arch/mips/kernel/idle.c | 3 --- 2 files changed, 10 deletions(-) (limited to 'arch') diff --git a/arch/mips/include/asm/idle.h b/arch/mips/include/asm/idle.h index d9f932de80e9..1c967abd545c 100644 --- a/arch/mips/include/asm/idle.h +++ b/arch/mips/include/asm/idle.h @@ -8,19 +8,12 @@ extern void (*cpu_wait)(void); extern void r4k_wait(void); extern asmlinkage void __r4k_wait(void); extern void r4k_wait_irqoff(void); -extern void __pastwait(void); static inline int using_rollback_handler(void) { return cpu_wait == r4k_wait; } -static inline int address_is_in_r4k_wait_irqoff(unsigned long addr) -{ - return addr >= (unsigned long)r4k_wait_irqoff && - addr < (unsigned long)__pastwait; -} - extern int mips_cpuidle_wait_enter(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index); diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c index 09ce45980758..0b9082b6b683 100644 --- a/arch/mips/kernel/idle.c +++ b/arch/mips/kernel/idle.c @@ -68,9 +68,6 @@ void r4k_wait_irqoff(void) " wait \n" " .set pop \n"); local_irq_enable(); - __asm__( - " .globl __pastwait \n" - "__pastwait: \n"); } /* -- cgit v1.2.3 From 39a595935576cd56e3974830f6114e1a70bac65d Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Thu, 18 Sep 2014 16:09:49 +0100 Subject: MIPS: Kconfig: Add missing MIPS_CPS dependencies to PM and cpuidle The MIPS_CPS_PM and MIPS_CPS_CPUIDLE implementation should depend on the MIPS_CPS symbol to avoid the following build problem arch/mips/kernel/pm-cps.c: In function 'cps_pm_enter_state': arch/mips/kernel/pm-cps.c:164:26: error: 'cpu_coherent_mask' undeclared (first use in this function) cpumask_clear_cpu(cpu, &cpu_coherent_mask); ^ Signed-off-by: Markos Chandras Cc: Paul Burton Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/7798/ Signed-off-by: Ralf Baechle --- arch/mips/Kconfig | 1 + drivers/cpuidle/Kconfig.mips | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index ad6badb6be71..f43aa536c517 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -2066,6 +2066,7 @@ config MIPS_CPS support is unavailable. config MIPS_CPS_PM + depends on MIPS_CPS select MIPS_CPC bool diff --git a/drivers/cpuidle/Kconfig.mips b/drivers/cpuidle/Kconfig.mips index 0e70ee28a5ca..4102be01d06a 100644 --- a/drivers/cpuidle/Kconfig.mips +++ b/drivers/cpuidle/Kconfig.mips @@ -3,7 +3,7 @@ # config MIPS_CPS_CPUIDLE bool "CPU Idle driver for MIPS CPS platforms" - depends on CPU_IDLE + depends on CPU_IDLE && MIPS_CPS depends on SYS_SUPPORTS_MIPS_CPS select ARCH_NEEDS_CPU_IDLE_COUPLED if MIPS_MT select GENERIC_CLOCKEVENTS_BROADCAST if SMP -- cgit v1.2.3 From b89f30683970fd2011eeae83b5161764aab3e21b Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Thu, 25 Sep 2014 10:26:15 +0100 Subject: MIPS: Prevent compiler warning from cop2_{save,restore} The no-op cases of cop2_save & cop2_restore lead to the following warnings being emitted during build with recent versions of gcc (tested using gcc 4.8.3 from the Mentor Sourcery CodeBench 2014.05 toolchain): In file included from ./arch/mips/include/asm/switch_to.h:18:0, from kernel/sched/core.c:78: kernel/sched/core.c: In function 'finish_task_switch': include/asm-generic/current.h:6:45: warning: value computed is not used [-Wunused-value] #define get_current() (current_thread_info()->task) ^ ./arch/mips/include/asm/cop2.h:48:32: note: in definition of macro 'cop2_restore' #define cop2_restore(r) do { (r); } while (0) ^ include/asm-generic/current.h:7:17: note: in expansion of macro 'get_current' #define current get_current() ^ ./arch/mips/include/asm/switch_to.h:114:16: note: in expansion of macro 'current' cop2_restore(current); \ ^ kernel/sched/core.c:2225:2: note: in expansion of macro 'finish_arch_switch' finish_arch_switch(prev); ^ Avoid the warning by "using" the value by casting to void. Signed-off-by: Paul Burton Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/7880/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/cop2.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/mips/include/asm/cop2.h b/arch/mips/include/asm/cop2.h index 51f80bd36fcc..63b3468ede4c 100644 --- a/arch/mips/include/asm/cop2.h +++ b/arch/mips/include/asm/cop2.h @@ -37,15 +37,15 @@ extern void nlm_cop2_restore(struct nlm_cop2_state *); #define cop2_present 1 #define cop2_lazy_restore 1 -#define cop2_save(r) do { (r); } while (0) -#define cop2_restore(r) do { (r); } while (0) +#define cop2_save(r) do { (void)(r); } while (0) +#define cop2_restore(r) do { (void)(r); } while (0) #else #define cop2_present 0 #define cop2_lazy_restore 0 -#define cop2_save(r) do { (r); } while (0) -#define cop2_restore(r) do { (r); } while (0) +#define cop2_save(r) do { (void)(r); } while (0) +#define cop2_restore(r) do { (void)(r); } while (0) #endif enum cu2_ops { -- cgit v1.2.3 From 5e9e3a5f69cab3f14f1f91c33ab391d403617575 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Thu, 9 Oct 2014 10:34:19 +0100 Subject: MIPS: Malta: Do not build the malta-amon.c file if CMP is not enabled The malta-amon.c file provides functions to access the YAMON Monitoring interface to bring up secondary VPEs in case of SMP/CMP. As a result of which, there is no need to build it if CMP is not used. Signed-off-by: Markos Chandras Reviewed-by: Paul Burton Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/7993/ Signed-off-by: Ralf Baechle --- arch/mips/mti-malta/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/mips/mti-malta/Makefile b/arch/mips/mti-malta/Makefile index b9510ea8db56..6510ace272d4 100644 --- a/arch/mips/mti-malta/Makefile +++ b/arch/mips/mti-malta/Makefile @@ -5,8 +5,9 @@ # Copyright (C) 2008 Wind River Systems, Inc. # written by Ralf Baechle # -obj-y := malta-amon.o malta-display.o malta-init.o \ +obj-y := malta-display.o malta-init.o \ malta-int.o malta-memory.o malta-platform.o \ malta-reset.o malta-setup.o malta-time.o +obj-$(CONFIG_MIPS_CMP) += malta-amon.o obj-$(CONFIG_MIPS_MALTA_PM) += malta-pm.o -- cgit v1.2.3 From 6fa88d9e0886ad646ef5706539fc314cbaccd690 Mon Sep 17 00:00:00 2001 From: Stefan Hengelein Date: Sun, 19 Oct 2014 20:04:26 +0200 Subject: MIPS: MSP71xx: Fix build error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When CONFIG_MIPS_MT_SMP is enabled, the following compilation error occurs: arch/mips/pmcs-msp71xx/msp_irq_cic.c:134: error: ‘irq’ undeclared This code clearly never saw a compiler. The surrounding code suggests, that 'd->irq' was intended, not 'irq'. This error was found with vampyr. Signed-off-by: Stefan Hengelein Fixes: d7881fbdf866d7d0 ("MIPS: msp71xx: Convert to new irq_chip functions") Acked-by: Geert Uytterhoeven Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8116/ Signed-off-by: Ralf Baechle --- arch/mips/pmcs-msp71xx/msp_irq_cic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/mips/pmcs-msp71xx/msp_irq_cic.c b/arch/mips/pmcs-msp71xx/msp_irq_cic.c index b8df2f7b3328..1207ec4dfb77 100644 --- a/arch/mips/pmcs-msp71xx/msp_irq_cic.c +++ b/arch/mips/pmcs-msp71xx/msp_irq_cic.c @@ -131,11 +131,11 @@ static int msp_cic_irq_set_affinity(struct irq_data *d, int cpu; unsigned long flags; unsigned int mtflags; - unsigned long imask = (1 << (irq - MSP_CIC_INTBASE)); + unsigned long imask = (1 << (d->irq - MSP_CIC_INTBASE)); volatile u32 *cic_mask = (volatile u32 *)CIC_VPE0_MSK_REG; /* timer balancing should be disabled in kernel code */ - BUG_ON(irq == MSP_INT_VPE0_TIMER || irq == MSP_INT_VPE1_TIMER); + BUG_ON(d->irq == MSP_INT_VPE0_TIMER || d->irq == MSP_INT_VPE1_TIMER); LOCK_CORE(flags, mtflags); /* enable if any of each VPE's TCs require this IRQ */ -- cgit v1.2.3 From aedd153f5bb5b1f1d6d9142014f521ae2ec294cc Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Mon, 20 Oct 2014 09:39:31 +0100 Subject: MIPS: ftrace: Fix a microMIPS build problem Code before the .fixup section needs to have the .insn directive. This has no side effects on MIPS32/64 but it affects the way microMIPS loads the address for the return label. Fixes the following build problem: mips-linux-gnu-ld: arch/mips/built-in.o: .fixup+0x4a0: Unsupported jump between ISA modes; consider recompiling with interlinking enabled. mips-linux-gnu-ld: final link failed: Bad value Makefile:819: recipe for target 'vmlinux' failed The fix is similar to 1658f914ff91c3bf ("MIPS: microMIPS: Disable LL/SC and fix linker bug.") Signed-off-by: Markos Chandras Cc: stable@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8117/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/ftrace.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/mips/include/asm/ftrace.h b/arch/mips/include/asm/ftrace.h index 992aaba603b5..b463f2aa5a61 100644 --- a/arch/mips/include/asm/ftrace.h +++ b/arch/mips/include/asm/ftrace.h @@ -24,7 +24,7 @@ do { \ asm volatile ( \ "1: " load " %[tmp_dst], 0(%[tmp_src])\n" \ " li %[tmp_err], 0\n" \ - "2:\n" \ + "2: .insn\n" \ \ ".section .fixup, \"ax\"\n" \ "3: li %[tmp_err], 1\n" \ @@ -46,7 +46,7 @@ do { \ asm volatile ( \ "1: " store " %[tmp_src], 0(%[tmp_dst])\n"\ " li %[tmp_err], 0\n" \ - "2:\n" \ + "2: .insn\n" \ \ ".section .fixup, \"ax\"\n" \ "3: li %[tmp_err], 1\n" \ -- cgit v1.2.3 From 3e10dccc82baaf243114d046d9757d7f368cdfb5 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Sun, 19 Oct 2014 14:29:14 -0700 Subject: ARM: sunxi_defconfig: enable CONFIG_REGULATOR_FIXED_VOLTAGE I missed in 9a2ad529ed26 that REGULATOR_FIXED_VOLTAGE had also gotten deselected, so it needs to be added back as an explicit option. Signed-off-by: Olof Johansson --- arch/arm/configs/sunxi_defconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm/configs/sunxi_defconfig b/arch/arm/configs/sunxi_defconfig index 847045313101..f7ac0379850f 100644 --- a/arch/arm/configs/sunxi_defconfig +++ b/arch/arm/configs/sunxi_defconfig @@ -76,6 +76,7 @@ CONFIG_WATCHDOG=y CONFIG_SUNXI_WATCHDOG=y CONFIG_MFD_AXP20X=y CONFIG_REGULATOR=y +CONFIG_REGULATOR_FIXED_VOLTAGE=y CONFIG_REGULATOR_GPIO=y CONFIG_USB=y CONFIG_USB_EHCI_HCD=y -- cgit v1.2.3 From 90f0845ce640c1154cdea7c87da328c123e73b75 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Mon, 20 Oct 2014 00:18:50 -0700 Subject: ARM: multi_v7_defconfig: enable CONFIG_MMC_DW_ROCKCHIP Allows booting from SD/MMC on RK3288 and other platforms. Added here so I can enable the board in the boot farm. Signed-off-by: Olof Johansson --- arch/arm/configs/multi_v7_defconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 491b7d5523bf..709ecc9009ec 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -353,6 +353,7 @@ CONFIG_MMC_MVSDIO=y CONFIG_MMC_SUNXI=y CONFIG_MMC_DW=y CONFIG_MMC_DW_EXYNOS=y +CONFIG_MMC_DW_ROCKCHIP=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y CONFIG_LEDS_GPIO=y -- cgit v1.2.3 From 854e8bb1aa06c578c2c9145fa6bfe3680ef63b23 Mon Sep 17 00:00:00 2001 From: Nadav Amit Date: Tue, 16 Sep 2014 03:24:05 +0300 Subject: KVM: x86: Check non-canonical addresses upon WRMSR Upon WRMSR, the CPU should inject #GP if a non-canonical value (address) is written to certain MSRs. The behavior is "almost" identical for AMD and Intel (ignoring MSRs that are not implemented in either architecture since they would anyhow #GP). However, IA32_SYSENTER_ESP and IA32_SYSENTER_EIP cause #GP if non-canonical address is written on Intel but not on AMD (which ignores the top 32-bits). Accordingly, this patch injects a #GP on the MSRs which behave identically on Intel and AMD. To eliminate the differences between the architecutres, the value which is written to IA32_SYSENTER_ESP and IA32_SYSENTER_EIP is turned to canonical value before writing instead of injecting a #GP. Some references from Intel and AMD manuals: According to Intel SDM description of WRMSR instruction #GP is expected on WRMSR "If the source register contains a non-canonical address and ECX specifies one of the following MSRs: IA32_DS_AREA, IA32_FS_BASE, IA32_GS_BASE, IA32_KERNEL_GS_BASE, IA32_LSTAR, IA32_SYSENTER_EIP, IA32_SYSENTER_ESP." According to AMD manual instruction manual: LSTAR/CSTAR (SYSCALL): "The WRMSR instruction loads the target RIP into the LSTAR and CSTAR registers. If an RIP written by WRMSR is not in canonical form, a general-protection exception (#GP) occurs." IA32_GS_BASE and IA32_FS_BASE (WRFSBASE/WRGSBASE): "The address written to the base field must be in canonical form or a #GP fault will occur." IA32_KERNEL_GS_BASE (SWAPGS): "The address stored in the KernelGSbase MSR must be in canonical form." This patch fixes CVE-2014-3610. Cc: stable@vger.kernel.org Signed-off-by: Nadav Amit Signed-off-by: Paolo Bonzini --- arch/x86/include/asm/kvm_host.h | 14 ++++++++++++++ arch/x86/kvm/svm.c | 2 +- arch/x86/kvm/vmx.c | 2 +- arch/x86/kvm/x86.c | 27 ++++++++++++++++++++++++++- 4 files changed, 42 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 7d603a71ab3a..ccc94de4ac49 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -989,6 +989,20 @@ static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code) kvm_queue_exception_e(vcpu, GP_VECTOR, error_code); } +static inline u64 get_canonical(u64 la) +{ + return ((int64_t)la << 16) >> 16; +} + +static inline bool is_noncanonical_address(u64 la) +{ +#ifdef CONFIG_X86_64 + return get_canonical(la) != la; +#else + return false; +#endif +} + #define TSS_IOPB_BASE_OFFSET 0x66 #define TSS_BASE_SIZE 0x68 #define TSS_IOPB_SIZE (65536 / 8) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 65510f624dfe..00bed2c5e948 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -3251,7 +3251,7 @@ static int wrmsr_interception(struct vcpu_svm *svm) msr.host_initiated = false; svm->next_rip = kvm_rip_read(&svm->vcpu) + 2; - if (svm_set_msr(&svm->vcpu, &msr)) { + if (kvm_set_msr(&svm->vcpu, &msr)) { trace_kvm_msr_write_ex(ecx, data); kvm_inject_gp(&svm->vcpu, 0); } else { diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 0acac81f198b..148020a7dd98 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5291,7 +5291,7 @@ static int handle_wrmsr(struct kvm_vcpu *vcpu) msr.data = data; msr.index = ecx; msr.host_initiated = false; - if (vmx_set_msr(vcpu, &msr) != 0) { + if (kvm_set_msr(vcpu, &msr) != 0) { trace_kvm_msr_write_ex(ecx, data); kvm_inject_gp(vcpu, 0); return 1; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 34c8f94331f8..5a7195573a32 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -987,7 +987,6 @@ void kvm_enable_efer_bits(u64 mask) } EXPORT_SYMBOL_GPL(kvm_enable_efer_bits); - /* * Writes msr value into into the appropriate "register". * Returns 0 on success, non-0 otherwise. @@ -995,8 +994,34 @@ EXPORT_SYMBOL_GPL(kvm_enable_efer_bits); */ int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr) { + switch (msr->index) { + case MSR_FS_BASE: + case MSR_GS_BASE: + case MSR_KERNEL_GS_BASE: + case MSR_CSTAR: + case MSR_LSTAR: + if (is_noncanonical_address(msr->data)) + return 1; + break; + case MSR_IA32_SYSENTER_EIP: + case MSR_IA32_SYSENTER_ESP: + /* + * IA32_SYSENTER_ESP and IA32_SYSENTER_EIP cause #GP if + * non-canonical address is written on Intel but not on + * AMD (which ignores the top 32-bits, because it does + * not implement 64-bit SYSENTER). + * + * 64-bit code should hence be able to write a non-canonical + * value on AMD. Making the address canonical ensures that + * vmentry does not fail on Intel after writing a non-canonical + * value, and that something deterministic happens if the guest + * invokes 64-bit SYSENTER. + */ + msr->data = get_canonical(msr->data); + } return kvm_x86_ops->set_msr(vcpu, msr); } +EXPORT_SYMBOL_GPL(kvm_set_msr); /* * Adapt set_msr() to msr_io()'s calling convention -- cgit v1.2.3 From 8b3c3104c3f4f706e99365c3e0d2aa61b95f969f Mon Sep 17 00:00:00 2001 From: Andy Honig Date: Wed, 27 Aug 2014 11:16:44 -0700 Subject: KVM: x86: Prevent host from panicking on shared MSR writes. The previous patch blocked invalid writes directly when the MSR is written. As a precaution, prevent future similar mistakes by gracefulling handle GPs caused by writes to shared MSRs. Cc: stable@vger.kernel.org Signed-off-by: Andrew Honig [Remove parts obsoleted by Nadav's patch. - Paolo] Signed-off-by: Paolo Bonzini --- arch/x86/include/asm/kvm_host.h | 2 +- arch/x86/kvm/vmx.c | 7 +++++-- arch/x86/kvm/x86.c | 11 ++++++++--- 3 files changed, 14 insertions(+), 6 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index ccc94de4ac49..6ed0c30d6a0c 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1064,7 +1064,7 @@ void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm, unsigned long address); void kvm_define_shared_msr(unsigned index, u32 msr); -void kvm_set_shared_msr(unsigned index, u64 val, u64 mask); +int kvm_set_shared_msr(unsigned index, u64 val, u64 mask); bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip); diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 148020a7dd98..7e2c098b59c9 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2659,12 +2659,15 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info) default: msr = find_msr_entry(vmx, msr_index); if (msr) { + u64 old_msr_data = msr->data; msr->data = data; if (msr - vmx->guest_msrs < vmx->save_nmsrs) { preempt_disable(); - kvm_set_shared_msr(msr->index, msr->data, - msr->mask); + ret = kvm_set_shared_msr(msr->index, msr->data, + msr->mask); preempt_enable(); + if (ret) + msr->data = old_msr_data; } break; } diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 5a7195573a32..0033df32a745 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -229,20 +229,25 @@ static void kvm_shared_msr_cpu_online(void) shared_msr_update(i, shared_msrs_global.msrs[i]); } -void kvm_set_shared_msr(unsigned slot, u64 value, u64 mask) +int kvm_set_shared_msr(unsigned slot, u64 value, u64 mask) { unsigned int cpu = smp_processor_id(); struct kvm_shared_msrs *smsr = per_cpu_ptr(shared_msrs, cpu); + int err; if (((value ^ smsr->values[slot].curr) & mask) == 0) - return; + return 0; smsr->values[slot].curr = value; - wrmsrl(shared_msrs_global.msrs[slot], value); + err = wrmsrl_safe(shared_msrs_global.msrs[slot], value); + if (err) + return 1; + if (!smsr->registered) { smsr->urn.on_user_return = kvm_on_user_return; user_return_notifier_register(&smsr->urn); smsr->registered = true; } + return 0; } EXPORT_SYMBOL_GPL(kvm_set_shared_msr); -- cgit v1.2.3 From 2febc839133280d5a5e8e1179c94ea674489dae2 Mon Sep 17 00:00:00 2001 From: Andy Honig Date: Wed, 27 Aug 2014 14:42:54 -0700 Subject: KVM: x86: Improve thread safety in pit There's a race condition in the PIT emulation code in KVM. In __kvm_migrate_pit_timer the pit_timer object is accessed without synchronization. If the race condition occurs at the wrong time this can crash the host kernel. This fixes CVE-2014-3611. Cc: stable@vger.kernel.org Signed-off-by: Andrew Honig Signed-off-by: Paolo Bonzini --- arch/x86/kvm/i8254.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch') diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index 518d86471b76..298781d4cfb4 100644 --- a/arch/x86/kvm/i8254.c +++ b/arch/x86/kvm/i8254.c @@ -262,8 +262,10 @@ void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu) return; timer = &pit->pit_state.timer; + mutex_lock(&pit->pit_state.lock); if (hrtimer_cancel(timer)) hrtimer_start_expires(timer, HRTIMER_MODE_ABS); + mutex_unlock(&pit->pit_state.lock); } static void destroy_pit_timer(struct kvm_pit *pit) -- cgit v1.2.3 From 05c83ec9b73c8124555b706f6af777b10adf0862 Mon Sep 17 00:00:00 2001 From: Nadav Amit Date: Thu, 18 Sep 2014 22:39:37 +0300 Subject: KVM: x86: Fix wrong masking on relative jump/call Relative jumps and calls do the masking according to the operand size, and not according to the address size as the KVM emulator does today. This patch fixes KVM behavior. Cc: stable@vger.kernel.org Signed-off-by: Nadav Amit Signed-off-by: Paolo Bonzini --- arch/x86/kvm/emulate.c | 27 ++++++++++++++++++++++----- 1 file changed, 22 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index a46207a05835..047698974799 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -504,11 +504,6 @@ static void rsp_increment(struct x86_emulate_ctxt *ctxt, int inc) masked_increment(reg_rmw(ctxt, VCPU_REGS_RSP), stack_mask(ctxt), inc); } -static inline void jmp_rel(struct x86_emulate_ctxt *ctxt, int rel) -{ - register_address_increment(ctxt, &ctxt->_eip, rel); -} - static u32 desc_limit_scaled(struct desc_struct *desc) { u32 limit = get_desc_limit(desc); @@ -569,6 +564,28 @@ static int emulate_nm(struct x86_emulate_ctxt *ctxt) return emulate_exception(ctxt, NM_VECTOR, 0, false); } +static inline void assign_eip_near(struct x86_emulate_ctxt *ctxt, ulong dst) +{ + switch (ctxt->op_bytes) { + case 2: + ctxt->_eip = (u16)dst; + break; + case 4: + ctxt->_eip = (u32)dst; + break; + case 8: + ctxt->_eip = dst; + break; + default: + WARN(1, "unsupported eip assignment size\n"); + } +} + +static inline void jmp_rel(struct x86_emulate_ctxt *ctxt, int rel) +{ + assign_eip_near(ctxt, ctxt->_eip + rel); +} + static u16 get_segment_selector(struct x86_emulate_ctxt *ctxt, unsigned seg) { u16 selector; -- cgit v1.2.3 From 234f3ce485d54017f15cf5e0699cff4100121601 Mon Sep 17 00:00:00 2001 From: Nadav Amit Date: Thu, 18 Sep 2014 22:39:38 +0300 Subject: KVM: x86: Emulator fixes for eip canonical checks on near branches Before changing rip (during jmp, call, ret, etc.) the target should be asserted to be canonical one, as real CPUs do. During sysret, both target rsp and rip should be canonical. If any of these values is noncanonical, a #GP exception should occur. The exception to this rule are syscall and sysenter instructions in which the assigned rip is checked during the assignment to the relevant MSRs. This patch fixes the emulator to behave as real CPUs do for near branches. Far branches are handled by the next patch. This fixes CVE-2014-3647. Cc: stable@vger.kernel.org Signed-off-by: Nadav Amit Signed-off-by: Paolo Bonzini --- arch/x86/kvm/emulate.c | 78 ++++++++++++++++++++++++++++++++++---------------- 1 file changed, 54 insertions(+), 24 deletions(-) (limited to 'arch') diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 047698974799..a1b9139169f6 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -564,7 +564,8 @@ static int emulate_nm(struct x86_emulate_ctxt *ctxt) return emulate_exception(ctxt, NM_VECTOR, 0, false); } -static inline void assign_eip_near(struct x86_emulate_ctxt *ctxt, ulong dst) +static inline int assign_eip_far(struct x86_emulate_ctxt *ctxt, ulong dst, + int cs_l) { switch (ctxt->op_bytes) { case 2: @@ -574,16 +575,25 @@ static inline void assign_eip_near(struct x86_emulate_ctxt *ctxt, ulong dst) ctxt->_eip = (u32)dst; break; case 8: + if ((cs_l && is_noncanonical_address(dst)) || + (!cs_l && (dst & ~(u32)-1))) + return emulate_gp(ctxt, 0); ctxt->_eip = dst; break; default: WARN(1, "unsupported eip assignment size\n"); } + return X86EMUL_CONTINUE; +} + +static inline int assign_eip_near(struct x86_emulate_ctxt *ctxt, ulong dst) +{ + return assign_eip_far(ctxt, dst, ctxt->mode == X86EMUL_MODE_PROT64); } -static inline void jmp_rel(struct x86_emulate_ctxt *ctxt, int rel) +static inline int jmp_rel(struct x86_emulate_ctxt *ctxt, int rel) { - assign_eip_near(ctxt, ctxt->_eip + rel); + return assign_eip_near(ctxt, ctxt->_eip + rel); } static u16 get_segment_selector(struct x86_emulate_ctxt *ctxt, unsigned seg) @@ -1998,13 +2008,15 @@ static int em_grp45(struct x86_emulate_ctxt *ctxt) case 2: /* call near abs */ { long int old_eip; old_eip = ctxt->_eip; - ctxt->_eip = ctxt->src.val; + rc = assign_eip_near(ctxt, ctxt->src.val); + if (rc != X86EMUL_CONTINUE) + break; ctxt->src.val = old_eip; rc = em_push(ctxt); break; } case 4: /* jmp abs */ - ctxt->_eip = ctxt->src.val; + rc = assign_eip_near(ctxt, ctxt->src.val); break; case 5: /* jmp far */ rc = em_jmp_far(ctxt); @@ -2039,10 +2051,14 @@ static int em_cmpxchg8b(struct x86_emulate_ctxt *ctxt) static int em_ret(struct x86_emulate_ctxt *ctxt) { - ctxt->dst.type = OP_REG; - ctxt->dst.addr.reg = &ctxt->_eip; - ctxt->dst.bytes = ctxt->op_bytes; - return em_pop(ctxt); + int rc; + unsigned long eip; + + rc = emulate_pop(ctxt, &eip, ctxt->op_bytes); + if (rc != X86EMUL_CONTINUE) + return rc; + + return assign_eip_near(ctxt, eip); } static int em_ret_far(struct x86_emulate_ctxt *ctxt) @@ -2323,7 +2339,7 @@ static int em_sysexit(struct x86_emulate_ctxt *ctxt) { const struct x86_emulate_ops *ops = ctxt->ops; struct desc_struct cs, ss; - u64 msr_data; + u64 msr_data, rcx, rdx; int usermode; u16 cs_sel = 0, ss_sel = 0; @@ -2339,6 +2355,9 @@ static int em_sysexit(struct x86_emulate_ctxt *ctxt) else usermode = X86EMUL_MODE_PROT32; + rcx = reg_read(ctxt, VCPU_REGS_RCX); + rdx = reg_read(ctxt, VCPU_REGS_RDX); + cs.dpl = 3; ss.dpl = 3; ops->get_msr(ctxt, MSR_IA32_SYSENTER_CS, &msr_data); @@ -2356,6 +2375,9 @@ static int em_sysexit(struct x86_emulate_ctxt *ctxt) ss_sel = cs_sel + 8; cs.d = 0; cs.l = 1; + if (is_noncanonical_address(rcx) || + is_noncanonical_address(rdx)) + return emulate_gp(ctxt, 0); break; } cs_sel |= SELECTOR_RPL_MASK; @@ -2364,8 +2386,8 @@ static int em_sysexit(struct x86_emulate_ctxt *ctxt) ops->set_segment(ctxt, cs_sel, &cs, 0, VCPU_SREG_CS); ops->set_segment(ctxt, ss_sel, &ss, 0, VCPU_SREG_SS); - ctxt->_eip = reg_read(ctxt, VCPU_REGS_RDX); - *reg_write(ctxt, VCPU_REGS_RSP) = reg_read(ctxt, VCPU_REGS_RCX); + ctxt->_eip = rdx; + *reg_write(ctxt, VCPU_REGS_RSP) = rcx; return X86EMUL_CONTINUE; } @@ -2905,10 +2927,13 @@ static int em_aad(struct x86_emulate_ctxt *ctxt) static int em_call(struct x86_emulate_ctxt *ctxt) { + int rc; long rel = ctxt->src.val; ctxt->src.val = (unsigned long)ctxt->_eip; - jmp_rel(ctxt, rel); + rc = jmp_rel(ctxt, rel); + if (rc != X86EMUL_CONTINUE) + return rc; return em_push(ctxt); } @@ -2940,11 +2965,12 @@ static int em_call_far(struct x86_emulate_ctxt *ctxt) static int em_ret_near_imm(struct x86_emulate_ctxt *ctxt) { int rc; + unsigned long eip; - ctxt->dst.type = OP_REG; - ctxt->dst.addr.reg = &ctxt->_eip; - ctxt->dst.bytes = ctxt->op_bytes; - rc = emulate_pop(ctxt, &ctxt->dst.val, ctxt->op_bytes); + rc = emulate_pop(ctxt, &eip, ctxt->op_bytes); + if (rc != X86EMUL_CONTINUE) + return rc; + rc = assign_eip_near(ctxt, eip); if (rc != X86EMUL_CONTINUE) return rc; rsp_increment(ctxt, ctxt->src.val); @@ -3271,20 +3297,24 @@ static int em_lmsw(struct x86_emulate_ctxt *ctxt) static int em_loop(struct x86_emulate_ctxt *ctxt) { + int rc = X86EMUL_CONTINUE; + register_address_increment(ctxt, reg_rmw(ctxt, VCPU_REGS_RCX), -1); if ((address_mask(ctxt, reg_read(ctxt, VCPU_REGS_RCX)) != 0) && (ctxt->b == 0xe2 || test_cc(ctxt->b ^ 0x5, ctxt->eflags))) - jmp_rel(ctxt, ctxt->src.val); + rc = jmp_rel(ctxt, ctxt->src.val); - return X86EMUL_CONTINUE; + return rc; } static int em_jcxz(struct x86_emulate_ctxt *ctxt) { + int rc = X86EMUL_CONTINUE; + if (address_mask(ctxt, reg_read(ctxt, VCPU_REGS_RCX)) == 0) - jmp_rel(ctxt, ctxt->src.val); + rc = jmp_rel(ctxt, ctxt->src.val); - return X86EMUL_CONTINUE; + return rc; } static int em_in(struct x86_emulate_ctxt *ctxt) @@ -4743,7 +4773,7 @@ special_insn: break; case 0x70 ... 0x7f: /* jcc (short) */ if (test_cc(ctxt->b, ctxt->eflags)) - jmp_rel(ctxt, ctxt->src.val); + rc = jmp_rel(ctxt, ctxt->src.val); break; case 0x8d: /* lea r16/r32, m */ ctxt->dst.val = ctxt->src.addr.mem.ea; @@ -4773,7 +4803,7 @@ special_insn: break; case 0xe9: /* jmp rel */ case 0xeb: /* jmp rel short */ - jmp_rel(ctxt, ctxt->src.val); + rc = jmp_rel(ctxt, ctxt->src.val); ctxt->dst.type = OP_NONE; /* Disable writeback. */ break; case 0xf4: /* hlt */ @@ -4898,7 +4928,7 @@ twobyte_insn: break; case 0x80 ... 0x8f: /* jnz rel, etc*/ if (test_cc(ctxt->b, ctxt->eflags)) - jmp_rel(ctxt, ctxt->src.val); + rc = jmp_rel(ctxt, ctxt->src.val); break; case 0x90 ... 0x9f: /* setcc r/m8 */ ctxt->dst.val = test_cc(ctxt->b, ctxt->eflags); -- cgit v1.2.3 From d1442d85cc30ea75f7d399474ca738e0bc96f715 Mon Sep 17 00:00:00 2001 From: Nadav Amit Date: Thu, 18 Sep 2014 22:39:39 +0300 Subject: KVM: x86: Handle errors when RIP is set during far jumps Far jmp/call/ret may fault while loading a new RIP. Currently KVM does not handle this case, and may result in failed vm-entry once the assignment is done. The tricky part of doing so is that loading the new CS affects the VMCS/VMCB state, so if we fail during loading the new RIP, we are left in unconsistent state. Therefore, this patch saves on 64-bit the old CS descriptor and restores it if loading RIP failed. This fixes CVE-2014-3647. Cc: stable@vger.kernel.org Signed-off-by: Nadav Amit Signed-off-by: Paolo Bonzini --- arch/x86/kvm/emulate.c | 118 ++++++++++++++++++++++++++++++++++++------------- 1 file changed, 88 insertions(+), 30 deletions(-) (limited to 'arch') diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index a1b9139169f6..c0deaff8d9f0 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -1443,7 +1443,9 @@ static int write_segment_descriptor(struct x86_emulate_ctxt *ctxt, /* Does not support long mode */ static int __load_segment_descriptor(struct x86_emulate_ctxt *ctxt, - u16 selector, int seg, u8 cpl, bool in_task_switch) + u16 selector, int seg, u8 cpl, + bool in_task_switch, + struct desc_struct *desc) { struct desc_struct seg_desc, old_desc; u8 dpl, rpl; @@ -1584,6 +1586,8 @@ static int __load_segment_descriptor(struct x86_emulate_ctxt *ctxt, } load: ctxt->ops->set_segment(ctxt, selector, &seg_desc, base3, seg); + if (desc) + *desc = seg_desc; return X86EMUL_CONTINUE; exception: return emulate_exception(ctxt, err_vec, err_code, true); @@ -1593,7 +1597,7 @@ static int load_segment_descriptor(struct x86_emulate_ctxt *ctxt, u16 selector, int seg) { u8 cpl = ctxt->ops->cpl(ctxt); - return __load_segment_descriptor(ctxt, selector, seg, cpl, false); + return __load_segment_descriptor(ctxt, selector, seg, cpl, false, NULL); } static void write_register_operand(struct operand *op) @@ -1987,17 +1991,31 @@ static int em_iret(struct x86_emulate_ctxt *ctxt) static int em_jmp_far(struct x86_emulate_ctxt *ctxt) { int rc; - unsigned short sel; + unsigned short sel, old_sel; + struct desc_struct old_desc, new_desc; + const struct x86_emulate_ops *ops = ctxt->ops; + u8 cpl = ctxt->ops->cpl(ctxt); + + /* Assignment of RIP may only fail in 64-bit mode */ + if (ctxt->mode == X86EMUL_MODE_PROT64) + ops->get_segment(ctxt, &old_sel, &old_desc, NULL, + VCPU_SREG_CS); memcpy(&sel, ctxt->src.valptr + ctxt->op_bytes, 2); - rc = load_segment_descriptor(ctxt, sel, VCPU_SREG_CS); + rc = __load_segment_descriptor(ctxt, sel, VCPU_SREG_CS, cpl, false, + &new_desc); if (rc != X86EMUL_CONTINUE) return rc; - ctxt->_eip = 0; - memcpy(&ctxt->_eip, ctxt->src.valptr, ctxt->op_bytes); - return X86EMUL_CONTINUE; + rc = assign_eip_far(ctxt, ctxt->src.val, new_desc.l); + if (rc != X86EMUL_CONTINUE) { + WARN_ON(!ctxt->mode != X86EMUL_MODE_PROT64); + /* assigning eip failed; restore the old cs */ + ops->set_segment(ctxt, old_sel, &old_desc, 0, VCPU_SREG_CS); + return rc; + } + return rc; } static int em_grp45(struct x86_emulate_ctxt *ctxt) @@ -2064,21 +2082,34 @@ static int em_ret(struct x86_emulate_ctxt *ctxt) static int em_ret_far(struct x86_emulate_ctxt *ctxt) { int rc; - unsigned long cs; + unsigned long eip, cs; + u16 old_cs; int cpl = ctxt->ops->cpl(ctxt); + struct desc_struct old_desc, new_desc; + const struct x86_emulate_ops *ops = ctxt->ops; + + if (ctxt->mode == X86EMUL_MODE_PROT64) + ops->get_segment(ctxt, &old_cs, &old_desc, NULL, + VCPU_SREG_CS); - rc = emulate_pop(ctxt, &ctxt->_eip, ctxt->op_bytes); + rc = emulate_pop(ctxt, &eip, ctxt->op_bytes); if (rc != X86EMUL_CONTINUE) return rc; - if (ctxt->op_bytes == 4) - ctxt->_eip = (u32)ctxt->_eip; rc = emulate_pop(ctxt, &cs, ctxt->op_bytes); if (rc != X86EMUL_CONTINUE) return rc; /* Outer-privilege level return is not implemented */ if (ctxt->mode >= X86EMUL_MODE_PROT16 && (cs & 3) > cpl) return X86EMUL_UNHANDLEABLE; - rc = load_segment_descriptor(ctxt, (u16)cs, VCPU_SREG_CS); + rc = __load_segment_descriptor(ctxt, (u16)cs, VCPU_SREG_CS, 0, false, + &new_desc); + if (rc != X86EMUL_CONTINUE) + return rc; + rc = assign_eip_far(ctxt, eip, new_desc.l); + if (rc != X86EMUL_CONTINUE) { + WARN_ON(!ctxt->mode != X86EMUL_MODE_PROT64); + ops->set_segment(ctxt, old_cs, &old_desc, 0, VCPU_SREG_CS); + } return rc; } @@ -2505,19 +2536,24 @@ static int load_state_from_tss16(struct x86_emulate_ctxt *ctxt, * Now load segment descriptors. If fault happens at this stage * it is handled in a context of new task */ - ret = __load_segment_descriptor(ctxt, tss->ldt, VCPU_SREG_LDTR, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ldt, VCPU_SREG_LDTR, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; @@ -2642,25 +2678,32 @@ static int load_state_from_tss32(struct x86_emulate_ctxt *ctxt, * Now load segment descriptors. If fault happenes at this stage * it is handled in a context of new task */ - ret = __load_segment_descriptor(ctxt, tss->ldt_selector, VCPU_SREG_LDTR, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ldt_selector, VCPU_SREG_LDTR, + cpl, true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->fs, VCPU_SREG_FS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->fs, VCPU_SREG_FS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->gs, VCPU_SREG_GS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->gs, VCPU_SREG_GS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; @@ -2942,24 +2985,39 @@ static int em_call_far(struct x86_emulate_ctxt *ctxt) u16 sel, old_cs; ulong old_eip; int rc; + struct desc_struct old_desc, new_desc; + const struct x86_emulate_ops *ops = ctxt->ops; + int cpl = ctxt->ops->cpl(ctxt); - old_cs = get_segment_selector(ctxt, VCPU_SREG_CS); old_eip = ctxt->_eip; + ops->get_segment(ctxt, &old_cs, &old_desc, NULL, VCPU_SREG_CS); memcpy(&sel, ctxt->src.valptr + ctxt->op_bytes, 2); - if (load_segment_descriptor(ctxt, sel, VCPU_SREG_CS)) + rc = __load_segment_descriptor(ctxt, sel, VCPU_SREG_CS, cpl, false, + &new_desc); + if (rc != X86EMUL_CONTINUE) return X86EMUL_CONTINUE; - ctxt->_eip = 0; - memcpy(&ctxt->_eip, ctxt->src.valptr, ctxt->op_bytes); + rc = assign_eip_far(ctxt, ctxt->src.val, new_desc.l); + if (rc != X86EMUL_CONTINUE) + goto fail; ctxt->src.val = old_cs; rc = em_push(ctxt); if (rc != X86EMUL_CONTINUE) - return rc; + goto fail; ctxt->src.val = old_eip; - return em_push(ctxt); + rc = em_push(ctxt); + /* If we failed, we tainted the memory, but the very least we should + restore cs */ + if (rc != X86EMUL_CONTINUE) + goto fail; + return rc; +fail: + ops->set_segment(ctxt, old_cs, &old_desc, 0, VCPU_SREG_CS); + return rc; + } static int em_ret_near_imm(struct x86_emulate_ctxt *ctxt) -- cgit v1.2.3 From a642fc305053cc1c6e47e4f4df327895747ab485 Mon Sep 17 00:00:00 2001 From: Petr Matousek Date: Tue, 23 Sep 2014 20:22:30 +0200 Subject: kvm: vmx: handle invvpid vm exit gracefully On systems with invvpid instruction support (corresponding bit in IA32_VMX_EPT_VPID_CAP MSR is set) guest invocation of invvpid causes vm exit, which is currently not handled and results in propagation of unknown exit to userspace. Fix this by installing an invvpid vm exit handler. This is CVE-2014-3646. Cc: stable@vger.kernel.org Signed-off-by: Petr Matousek Signed-off-by: Paolo Bonzini --- arch/x86/include/uapi/asm/vmx.h | 2 ++ arch/x86/kvm/vmx.c | 9 ++++++++- 2 files changed, 10 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/include/uapi/asm/vmx.h b/arch/x86/include/uapi/asm/vmx.h index 0e79420376eb..990a2fe1588d 100644 --- a/arch/x86/include/uapi/asm/vmx.h +++ b/arch/x86/include/uapi/asm/vmx.h @@ -67,6 +67,7 @@ #define EXIT_REASON_EPT_MISCONFIG 49 #define EXIT_REASON_INVEPT 50 #define EXIT_REASON_PREEMPTION_TIMER 52 +#define EXIT_REASON_INVVPID 53 #define EXIT_REASON_WBINVD 54 #define EXIT_REASON_XSETBV 55 #define EXIT_REASON_APIC_WRITE 56 @@ -114,6 +115,7 @@ { EXIT_REASON_EOI_INDUCED, "EOI_INDUCED" }, \ { EXIT_REASON_INVALID_STATE, "INVALID_STATE" }, \ { EXIT_REASON_INVD, "INVD" }, \ + { EXIT_REASON_INVVPID, "INVVPID" }, \ { EXIT_REASON_INVPCID, "INVPCID" } #endif /* _UAPIVMX_H */ diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 7e2c098b59c9..cf3cd079ec52 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -6746,6 +6746,12 @@ static int handle_invept(struct kvm_vcpu *vcpu) return 1; } +static int handle_invvpid(struct kvm_vcpu *vcpu) +{ + kvm_queue_exception(vcpu, UD_VECTOR); + return 1; +} + /* * The exit handlers return 1 if the exit was handled fully and guest execution * may resume. Otherwise they set the kvm_run parameter to indicate what needs @@ -6791,6 +6797,7 @@ static int (*const kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu) = { [EXIT_REASON_MWAIT_INSTRUCTION] = handle_mwait, [EXIT_REASON_MONITOR_INSTRUCTION] = handle_monitor, [EXIT_REASON_INVEPT] = handle_invept, + [EXIT_REASON_INVVPID] = handle_invvpid, }; static const int kvm_vmx_max_exit_handlers = @@ -7026,7 +7033,7 @@ static bool nested_vmx_exit_handled(struct kvm_vcpu *vcpu) case EXIT_REASON_VMPTRST: case EXIT_REASON_VMREAD: case EXIT_REASON_VMRESUME: case EXIT_REASON_VMWRITE: case EXIT_REASON_VMOFF: case EXIT_REASON_VMON: - case EXIT_REASON_INVEPT: + case EXIT_REASON_INVEPT: case EXIT_REASON_INVVPID: /* * VMX instructions trap unconditionally. This allows L1 to * emulate them for its L2 guest, i.e., allows 3-level nesting! -- cgit v1.2.3 From 2bc19dc3754fc066c43799659f0d848631c44cfe Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 18 Sep 2014 16:21:16 +0300 Subject: kvm: x86: don't kill guest on unknown exit reason KVM_EXIT_UNKNOWN is a kvm bug, we don't really know whether it was triggered by a priveledged application. Let's not kill the guest: WARN and inject #UD instead. Cc: stable@vger.kernel.org Signed-off-by: Michael S. Tsirkin Signed-off-by: Paolo Bonzini --- arch/x86/kvm/svm.c | 6 +++--- arch/x86/kvm/vmx.c | 6 +++--- 2 files changed, 6 insertions(+), 6 deletions(-) (limited to 'arch') diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 00bed2c5e948..7527cefc5a43 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -3551,9 +3551,9 @@ static int handle_exit(struct kvm_vcpu *vcpu) if (exit_code >= ARRAY_SIZE(svm_exit_handlers) || !svm_exit_handlers[exit_code]) { - kvm_run->exit_reason = KVM_EXIT_UNKNOWN; - kvm_run->hw.hardware_exit_reason = exit_code; - return 0; + WARN_ONCE(1, "vmx: unexpected exit reason 0x%x\n", exit_code); + kvm_queue_exception(vcpu, UD_VECTOR); + return 1; } return svm_exit_handlers[exit_code](svm); diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index cf3cd079ec52..a8b76c4c95e2 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -7174,10 +7174,10 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu) && kvm_vmx_exit_handlers[exit_reason]) return kvm_vmx_exit_handlers[exit_reason](vcpu); else { - vcpu->run->exit_reason = KVM_EXIT_UNKNOWN; - vcpu->run->hw.hardware_exit_reason = exit_reason; + WARN_ONCE(1, "vmx: unexpected exit reason 0x%x\n", exit_reason); + kvm_queue_exception(vcpu, UD_VECTOR); + return 1; } - return 0; } static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr) -- cgit v1.2.3 From 08da44aedba0f493e10695fa334348a7a4f72eb3 Mon Sep 17 00:00:00 2001 From: Nadav Amit Date: Fri, 3 Oct 2014 01:10:04 +0300 Subject: KVM: x86: Decoding guest instructions which cross page boundary may fail Once an instruction crosses a page boundary, the size read from the second page disregards the common case that part of the operand resides on the first page. As a result, fetch of long insturctions may fail, and thereby cause the decoding to fail as well. Cc: stable@vger.kernel.org Fixes: 5cfc7e0f5e5e1adf998df94f8e36edaf5d30d38e Signed-off-by: Nadav Amit Signed-off-by: Paolo Bonzini --- arch/x86/kvm/emulate.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index c0deaff8d9f0..02c8ea804aaf 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -778,8 +778,10 @@ static int __do_insn_fetch_bytes(struct x86_emulate_ctxt *ctxt, int op_size) static __always_inline int do_insn_fetch_bytes(struct x86_emulate_ctxt *ctxt, unsigned size) { - if (unlikely(ctxt->fetch.end - ctxt->fetch.ptr < size)) - return __do_insn_fetch_bytes(ctxt, size); + unsigned done_size = ctxt->fetch.end - ctxt->fetch.ptr; + + if (unlikely(done_size < size)) + return __do_insn_fetch_bytes(ctxt, size - done_size); else return X86EMUL_CONTINUE; } -- cgit v1.2.3 From cc08d25a88a396798ebf3ab659fe684add368285 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Fri, 24 Oct 2014 13:27:37 +0200 Subject: MIPS: SEAD3: Nuke PIC32 I2C driver. A platform driver for which nothing ever registers the corresponding platform device. Also it was driving the same hardware as sead3-i2c-drv.c so redundant anyway and couldn't co-exist with that driver because each of them was using a private spinlock to protect access to the same hardware resources. This also fixes a randconfig problem: arch/mips/mti-sead3/sead3-pic32-i2c-drv.c: In function 'i2c_platform_probe': arch/mips/mti-sead3/sead3-pic32-i2c-drv.c:345:2: error: implicit declaration of function 'i2c_add_numbered_adapter' [-Werror=implicit-function-declaration] ret = i2c_add_numbered_adapter(&priv->adap); ^ arch/mips/mti-sead3/sead3-pic32-i2c-drv.c: In function 'i2c_platform_remove': arch/mips/mti-sead3/sead3-pic32-i2c-drv.c:361:2: error: implicit declaration of function 'i2c_del_adapter' [-Werror=implicit-function-declaration] i2c_del_adapter(&priv->adap); Signed-off-by: Ralf Baechle --- arch/mips/mti-sead3/Makefile | 1 - arch/mips/mti-sead3/sead3-pic32-bus.c | 102 ------- arch/mips/mti-sead3/sead3-pic32-i2c-drv.c | 423 ------------------------------ 3 files changed, 526 deletions(-) delete mode 100644 arch/mips/mti-sead3/sead3-pic32-bus.c delete mode 100644 arch/mips/mti-sead3/sead3-pic32-i2c-drv.c (limited to 'arch') diff --git a/arch/mips/mti-sead3/Makefile b/arch/mips/mti-sead3/Makefile index febf4334545e..2ae49e99eb67 100644 --- a/arch/mips/mti-sead3/Makefile +++ b/arch/mips/mti-sead3/Makefile @@ -14,7 +14,6 @@ obj-y := sead3-lcd.o sead3-display.o sead3-init.o \ sead3-setup.o sead3-time.o obj-y += sead3-i2c-dev.o sead3-i2c.o \ - sead3-pic32-i2c-drv.o sead3-pic32-bus.o \ leds-sead3.o sead3-leds.o obj-$(CONFIG_EARLY_PRINTK) += sead3-console.o diff --git a/arch/mips/mti-sead3/sead3-pic32-bus.c b/arch/mips/mti-sead3/sead3-pic32-bus.c deleted file mode 100644 index 3b12aa5a7c88..000000000000 --- a/arch/mips/mti-sead3/sead3-pic32-bus.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. - */ -#include -#include -#include -#include -#include - -#define PIC32_NULL 0x00 -#define PIC32_RD 0x01 -#define PIC32_SYSRD 0x02 -#define PIC32_WR 0x10 -#define PIC32_SYSWR 0x20 -#define PIC32_IRQ_CLR 0x40 -#define PIC32_STATUS 0x80 - -#define DELAY() udelay(100) /* FIXME: needed? */ - -/* spinlock to ensure atomic access to PIC32 */ -static DEFINE_SPINLOCK(pic32_bus_lock); - -/* FIXME: io_remap these */ -static void __iomem *bus_xfer = (void __iomem *)0xbf000600; -static void __iomem *bus_status = (void __iomem *)0xbf000060; - -static inline unsigned int ioready(void) -{ - return readl(bus_status) & 1; -} - -static inline void wait_ioready(void) -{ - do { } while (!ioready()); -} - -static inline void wait_ioclear(void) -{ - do { } while (ioready()); -} - -static inline void check_ioclear(void) -{ - if (ioready()) { - pr_debug("ioclear: initially busy\n"); - do { - (void) readl(bus_xfer); - DELAY(); - } while (ioready()); - pr_debug("ioclear: cleared busy\n"); - } -} - -u32 pic32_bus_readl(u32 reg) -{ - unsigned long flags; - u32 status, val; - - spin_lock_irqsave(&pic32_bus_lock, flags); - - check_ioclear(); - - writel((PIC32_RD << 24) | (reg & 0x00ffffff), bus_xfer); - DELAY(); - wait_ioready(); - status = readl(bus_xfer); - DELAY(); - val = readl(bus_xfer); - wait_ioclear(); - - pr_debug("pic32_bus_readl: *%x -> %x (status=%x)\n", reg, val, status); - - spin_unlock_irqrestore(&pic32_bus_lock, flags); - - return val; -} - -void pic32_bus_writel(u32 val, u32 reg) -{ - unsigned long flags; - u32 status; - - spin_lock_irqsave(&pic32_bus_lock, flags); - - check_ioclear(); - - writel((PIC32_WR << 24) | (reg & 0x00ffffff), bus_xfer); - DELAY(); - writel(val, bus_xfer); - DELAY(); - wait_ioready(); - status = readl(bus_xfer); - wait_ioclear(); - - pr_debug("pic32_bus_writel: *%x <- %x (status=%x)\n", reg, val, status); - - spin_unlock_irqrestore(&pic32_bus_lock, flags); -} diff --git a/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c b/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c deleted file mode 100644 index 80fe194cfa53..000000000000 --- a/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c +++ /dev/null @@ -1,423 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define PIC32_I2CxCON 0x0000 -#define PIC32_I2CxCONCLR 0x0004 -#define PIC32_I2CxCONSET 0x0008 -#define PIC32_I2CxCONINV 0x000C -#define I2CCON_ON (1<<15) -#define I2CCON_FRZ (1<<14) -#define I2CCON_SIDL (1<<13) -#define I2CCON_SCLREL (1<<12) -#define I2CCON_STRICT (1<<11) -#define I2CCON_A10M (1<<10) -#define I2CCON_DISSLW (1<<9) -#define I2CCON_SMEN (1<<8) -#define I2CCON_GCEN (1<<7) -#define I2CCON_STREN (1<<6) -#define I2CCON_ACKDT (1<<5) -#define I2CCON_ACKEN (1<<4) -#define I2CCON_RCEN (1<<3) -#define I2CCON_PEN (1<<2) -#define I2CCON_RSEN (1<<1) -#define I2CCON_SEN (1<<0) - -#define PIC32_I2CxSTAT 0x0010 -#define PIC32_I2CxSTATCLR 0x0014 -#define PIC32_I2CxSTATSET 0x0018 -#define PIC32_I2CxSTATINV 0x001C -#define I2CSTAT_ACKSTAT (1<<15) -#define I2CSTAT_TRSTAT (1<<14) -#define I2CSTAT_BCL (1<<10) -#define I2CSTAT_GCSTAT (1<<9) -#define I2CSTAT_ADD10 (1<<8) -#define I2CSTAT_IWCOL (1<<7) -#define I2CSTAT_I2COV (1<<6) -#define I2CSTAT_DA (1<<5) -#define I2CSTAT_P (1<<4) -#define I2CSTAT_S (1<<3) -#define I2CSTAT_RW (1<<2) -#define I2CSTAT_RBF (1<<1) -#define I2CSTAT_TBF (1<<0) - -#define PIC32_I2CxADD 0x0020 -#define PIC32_I2CxADDCLR 0x0024 -#define PIC32_I2CxADDSET 0x0028 -#define PIC32_I2CxADDINV 0x002C -#define PIC32_I2CxMSK 0x0030 -#define PIC32_I2CxMSKCLR 0x0034 -#define PIC32_I2CxMSKSET 0x0038 -#define PIC32_I2CxMSKINV 0x003C -#define PIC32_I2CxBRG 0x0040 -#define PIC32_I2CxBRGCLR 0x0044 -#define PIC32_I2CxBRGSET 0x0048 -#define PIC32_I2CxBRGINV 0x004C -#define PIC32_I2CxTRN 0x0050 -#define PIC32_I2CxTRNCLR 0x0054 -#define PIC32_I2CxTRNSET 0x0058 -#define PIC32_I2CxTRNINV 0x005C -#define PIC32_I2CxRCV 0x0060 - -struct i2c_platform_data { - u32 base; - struct i2c_adapter adap; - u32 xfer_timeout; - u32 ack_timeout; - u32 ctl_timeout; -}; - -extern u32 pic32_bus_readl(u32 reg); -extern void pic32_bus_writel(u32 val, u32 reg); - -static inline void -StartI2C(struct i2c_platform_data *adap) -{ - pr_debug("StartI2C\n"); - pic32_bus_writel(I2CCON_SEN, adap->base + PIC32_I2CxCONSET); -} - -static inline void -StopI2C(struct i2c_platform_data *adap) -{ - pr_debug("StopI2C\n"); - pic32_bus_writel(I2CCON_PEN, adap->base + PIC32_I2CxCONSET); -} - -static inline void -AckI2C(struct i2c_platform_data *adap) -{ - pr_debug("AckI2C\n"); - pic32_bus_writel(I2CCON_ACKDT, adap->base + PIC32_I2CxCONCLR); - pic32_bus_writel(I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); -} - -static inline void -NotAckI2C(struct i2c_platform_data *adap) -{ - pr_debug("NakI2C\n"); - pic32_bus_writel(I2CCON_ACKDT, adap->base + PIC32_I2CxCONSET); - pic32_bus_writel(I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); -} - -static inline int -IdleI2C(struct i2c_platform_data *adap) -{ - int i; - - pr_debug("IdleI2C\n"); - for (i = 0; i < adap->ctl_timeout; i++) { - if (((pic32_bus_readl(adap->base + PIC32_I2CxCON) & - (I2CCON_ACKEN | I2CCON_RCEN | I2CCON_PEN | I2CCON_RSEN | - I2CCON_SEN)) == 0) && - ((pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & - (I2CSTAT_TRSTAT)) == 0)) - return 0; - udelay(1); - } - return -ETIMEDOUT; -} - -static inline u32 -MasterWriteI2C(struct i2c_platform_data *adap, u32 byte) -{ - pr_debug("MasterWriteI2C\n"); - - pic32_bus_writel(byte, adap->base + PIC32_I2CxTRN); - - return pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & I2CSTAT_IWCOL; -} - -static inline u32 -MasterReadI2C(struct i2c_platform_data *adap) -{ - pr_debug("MasterReadI2C\n"); - - pic32_bus_writel(I2CCON_RCEN, adap->base + PIC32_I2CxCONSET); - - while (pic32_bus_readl(adap->base + PIC32_I2CxCON) & I2CCON_RCEN) - ; - - pic32_bus_writel(I2CSTAT_I2COV, adap->base + PIC32_I2CxSTATCLR); - - return pic32_bus_readl(adap->base + PIC32_I2CxRCV); -} - -static int -do_address(struct i2c_platform_data *adap, unsigned int addr, int rd) -{ - pr_debug("doaddress\n"); - - IdleI2C(adap); - StartI2C(adap); - IdleI2C(adap); - - addr <<= 1; - if (rd) - addr |= 1; - - if (MasterWriteI2C(adap, addr)) - return -EIO; - IdleI2C(adap); - if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & I2CSTAT_ACKSTAT) - return -EIO; - return 0; -} - -static int -i2c_read(struct i2c_platform_data *adap, unsigned char *buf, - unsigned int len) -{ - int i; - u32 data; - - pr_debug("i2c_read\n"); - - i = 0; - while (i < len) { - data = MasterReadI2C(adap); - buf[i++] = data; - if (i < len) - AckI2C(adap); - else - NotAckI2C(adap); - } - - StopI2C(adap); - IdleI2C(adap); - return 0; -} - -static int -i2c_write(struct i2c_platform_data *adap, unsigned char *buf, - unsigned int len) -{ - int i; - u32 data; - - pr_debug("i2c_write\n"); - - i = 0; - while (i < len) { - data = buf[i]; - if (MasterWriteI2C(adap, data)) - return -EIO; - IdleI2C(adap); - if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & - I2CSTAT_ACKSTAT) - return -EIO; - i++; - } - - StopI2C(adap); - IdleI2C(adap); - return 0; -} - -static int -platform_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num) -{ - struct i2c_platform_data *adap = i2c_adap->algo_data; - struct i2c_msg *p; - int i, err = 0; - - pr_debug("platform_xfer\n"); - for (i = 0; i < num; i++) { -#define __BUFSIZE 80 - int ii; - static char buf[__BUFSIZE]; - char *b = buf; - - p = &msgs[i]; - b += sprintf(buf, " [%d bytes]", p->len); - if ((p->flags & I2C_M_RD) == 0) { - for (ii = 0; ii < p->len; ii++) { - if (b < &buf[__BUFSIZE-4]) { - b += sprintf(b, " %02x", p->buf[ii]); - } else { - strcat(b, "..."); - break; - } - } - } - pr_debug("xfer%d: DevAddr: %04x Op:%s Data:%s\n", i, p->addr, - (p->flags & I2C_M_RD) ? "Rd" : "Wr", buf); - } - - - for (i = 0; !err && i < num; i++) { - p = &msgs[i]; - err = do_address(adap, p->addr, p->flags & I2C_M_RD); - if (err || !p->len) - continue; - if (p->flags & I2C_M_RD) - err = i2c_read(adap, p->buf, p->len); - else - err = i2c_write(adap, p->buf, p->len); - } - - /* Return the number of messages processed, or the error code. */ - if (err == 0) - err = num; - - return err; -} - -static u32 -platform_func(struct i2c_adapter *adap) -{ - pr_debug("platform_algo\n"); - return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; -} - -static const struct i2c_algorithm platform_algo = { - .master_xfer = platform_xfer, - .functionality = platform_func, -}; - -static void i2c_platform_setup(struct i2c_platform_data *priv) -{ - pr_debug("i2c_platform_setup\n"); - - pic32_bus_writel(500, priv->base + PIC32_I2CxBRG); - pic32_bus_writel(I2CCON_ON, priv->base + PIC32_I2CxCONCLR); - pic32_bus_writel(I2CCON_ON, priv->base + PIC32_I2CxCONSET); - pic32_bus_writel((I2CSTAT_BCL | I2CSTAT_IWCOL), - (priv->base + PIC32_I2CxSTATCLR)); -} - -static void i2c_platform_disable(struct i2c_platform_data *priv) -{ - pr_debug("i2c_platform_disable\n"); -} - -static int i2c_platform_probe(struct platform_device *pdev) -{ - struct i2c_platform_data *priv; - struct resource *r; - int ret; - - pr_debug("i2c_platform_probe\n"); - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!r) - return -ENODEV; - - priv = devm_kzalloc(&pdev->dev, sizeof(struct i2c_platform_data), - GFP_KERNEL); - if (!priv) - return -ENOMEM; - - /* FIXME: need to allocate resource in PIC32 space */ -#if 0 - priv->base = bus_request_region(r->start, resource_size(r), - pdev->name); -#else - priv->base = r->start; -#endif - if (!priv->base) - return -EBUSY; - - priv->xfer_timeout = 200; - priv->ack_timeout = 200; - priv->ctl_timeout = 200; - - priv->adap.nr = pdev->id; - priv->adap.algo = &platform_algo; - priv->adap.algo_data = priv; - priv->adap.dev.parent = &pdev->dev; - strlcpy(priv->adap.name, "PIC32 I2C", sizeof(priv->adap.name)); - - i2c_platform_setup(priv); - - ret = i2c_add_numbered_adapter(&priv->adap); - if (ret) { - i2c_platform_disable(priv); - return ret; - } - - platform_set_drvdata(pdev, priv); - return 0; -} - -static int i2c_platform_remove(struct platform_device *pdev) -{ - struct i2c_platform_data *priv = platform_get_drvdata(pdev); - - pr_debug("i2c_platform_remove\n"); - platform_set_drvdata(pdev, NULL); - i2c_del_adapter(&priv->adap); - i2c_platform_disable(priv); - return 0; -} - -#ifdef CONFIG_PM -static int -i2c_platform_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct i2c_platform_data *priv = platform_get_drvdata(pdev); - - dev_dbg(&pdev->dev, "i2c_platform_disable\n"); - i2c_platform_disable(priv); - - return 0; -} - -static int -i2c_platform_resume(struct platform_device *pdev) -{ - struct i2c_platform_data *priv = platform_get_drvdata(pdev); - - dev_dbg(&pdev->dev, "i2c_platform_setup\n"); - i2c_platform_setup(priv); - - return 0; -} -#else -#define i2c_platform_suspend NULL -#define i2c_platform_resume NULL -#endif - -static struct platform_driver i2c_platform_driver = { - .driver = { - .name = "i2c_pic32", - .owner = THIS_MODULE, - }, - .probe = i2c_platform_probe, - .remove = i2c_platform_remove, - .suspend = i2c_platform_suspend, - .resume = i2c_platform_resume, -}; - -static int __init -i2c_platform_init(void) -{ - pr_debug("i2c_platform_init\n"); - return platform_driver_register(&i2c_platform_driver); -} - -static void __exit -i2c_platform_exit(void) -{ - pr_debug("i2c_platform_exit\n"); - platform_driver_unregister(&i2c_platform_driver); -} - -MODULE_AUTHOR("Chris Dearman, MIPS Technologies INC."); -MODULE_DESCRIPTION("PIC32 I2C driver"); -MODULE_LICENSE("GPL"); - -module_init(i2c_platform_init); -module_exit(i2c_platform_exit); -- cgit v1.2.3 From a430c9166312e1aa3d80bce32374233bdbfeba32 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 23 Oct 2014 14:54:14 +0200 Subject: KVM: emulate: avoid accessing NULL ctxt->memopp A failure to decode the instruction can cause a NULL pointer access. This is fixed simply by moving the "done" label as close as possible to the return. This fixes CVE-2014-8481. Reported-by: Andy Lutomirski Cc: stable@vger.kernel.org Fixes: 41061cdb98a0bec464278b4db8e894a3121671f5 Signed-off-by: Paolo Bonzini --- arch/x86/kvm/emulate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 02c8ea804aaf..eb3b1c46f995 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -4580,10 +4580,10 @@ done_prefixes: /* Decode and fetch the destination operand: register or memory. */ rc = decode_operand(ctxt, &ctxt->dst, (ctxt->d >> DstShift) & OpMask); -done: if (ctxt->rip_relative) ctxt->memopp->addr.mem.ea += ctxt->_eip; +done: return (rc != X86EMUL_CONTINUE) ? EMULATION_FAILED : EMULATION_OK; } -- cgit v1.2.3 From 13e457e0eebf0a0c82c38ceb890d93eb826d62a6 Mon Sep 17 00:00:00 2001 From: Nadav Amit Date: Mon, 13 Oct 2014 13:04:13 +0300 Subject: KVM: x86: Emulator does not decode clflush well Currently, all group15 instructions are decoded as clflush (e.g., mfence, xsave). In addition, the clflush instruction requires no prefix (66/f2/f3) would exist. If prefix exists it may encode a different instruction (e.g., clflushopt). Creating a group for clflush, and different group for each prefix. This has been the case forever, but the next patch needs the cflush group in order to fix a bug introduced in 3.17. Fixes: 41061cdb98a0bec464278b4db8e894a3121671f5 Cc: stable@vger.kernel.org Signed-off-by: Nadav Amit Signed-off-by: Paolo Bonzini --- arch/x86/kvm/emulate.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index eb3b1c46f995..97da5034d812 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -3462,6 +3462,12 @@ static int em_bswap(struct x86_emulate_ctxt *ctxt) return X86EMUL_CONTINUE; } +static int em_clflush(struct x86_emulate_ctxt *ctxt) +{ + /* emulating clflush regardless of cpuid */ + return X86EMUL_CONTINUE; +} + static bool valid_cr(int nr) { switch (nr) { @@ -3800,6 +3806,16 @@ static const struct opcode group11[] = { X7(D(Undefined)), }; +static const struct gprefix pfx_0f_ae_7 = { + I(0, em_clflush), N, N, N, +}; + +static const struct group_dual group15 = { { + N, N, N, N, N, N, N, GP(0, &pfx_0f_ae_7), +}, { + N, N, N, N, N, N, N, N, +} }; + static const struct gprefix pfx_0f_6f_0f_7f = { I(Mmx, em_mov), I(Sse | Aligned, em_mov), N, I(Sse | Unaligned, em_mov), }; @@ -4063,7 +4079,7 @@ static const struct opcode twobyte_table[256] = { F(DstMem | SrcReg | ModRM | BitOp | Lock | PageTable, em_bts), F(DstMem | SrcReg | Src2ImmByte | ModRM, em_shrd), F(DstMem | SrcReg | Src2CL | ModRM, em_shrd), - D(ModRM), F(DstReg | SrcMem | ModRM, em_imul), + GD(0, &group15), F(DstReg | SrcMem | ModRM, em_imul), /* 0xB0 - 0xB7 */ I2bv(DstMem | SrcReg | ModRM | Lock | PageTable, em_cmpxchg), I(DstReg | SrcMemFAddr | ModRM | Src2SS, em_lseg), @@ -4993,8 +5009,6 @@ twobyte_insn: case 0x90 ... 0x9f: /* setcc r/m8 */ ctxt->dst.val = test_cc(ctxt->b, ctxt->eflags); break; - case 0xae: /* clflush */ - break; case 0xb6 ... 0xb7: /* movzx */ ctxt->dst.bytes = ctxt->op_bytes; ctxt->dst.val = (ctxt->src.bytes == 1) ? (u8) ctxt->src.val -- cgit v1.2.3 From 3f6f1480d86bf9fc16c160d803ab1d006e3058d5 Mon Sep 17 00:00:00 2001 From: Nadav Amit Date: Mon, 13 Oct 2014 13:04:14 +0300 Subject: KVM: x86: PREFETCH and HINT_NOP should have SrcMem flag The decode phase of the x86 emulator assumes that every instruction with the ModRM flag, and which can be used with RIP-relative addressing, has either SrcMem or DstMem. This is not the case for several instructions - prefetch, hint-nop and clflush. Adding SrcMem|NoAccess for prefetch and hint-nop and SrcMem for clflush. This fixes CVE-2014-8480. Fixes: 41061cdb98a0bec464278b4db8e894a3121671f5 Cc: stable@vger.kernel.org Signed-off-by: Nadav Amit Signed-off-by: Paolo Bonzini --- arch/x86/kvm/emulate.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 97da5034d812..749f9fa38254 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -3807,7 +3807,7 @@ static const struct opcode group11[] = { }; static const struct gprefix pfx_0f_ae_7 = { - I(0, em_clflush), N, N, N, + I(SrcMem | ByteOp, em_clflush), N, N, N, }; static const struct group_dual group15 = { { @@ -4024,10 +4024,11 @@ static const struct opcode twobyte_table[256] = { N, I(ImplicitOps | EmulateOnUD, em_syscall), II(ImplicitOps | Priv, em_clts, clts), N, DI(ImplicitOps | Priv, invd), DI(ImplicitOps | Priv, wbinvd), N, N, - N, D(ImplicitOps | ModRM), N, N, + N, D(ImplicitOps | ModRM | SrcMem | NoAccess), N, N, /* 0x10 - 0x1F */ N, N, N, N, N, N, N, N, - D(ImplicitOps | ModRM), N, N, N, N, N, N, D(ImplicitOps | ModRM), + D(ImplicitOps | ModRM | SrcMem | NoAccess), + N, N, N, N, N, N, D(ImplicitOps | ModRM | SrcMem | NoAccess), /* 0x20 - 0x2F */ DIP(ModRM | DstMem | Priv | Op3264 | NoMod, cr_read, check_cr_read), DIP(ModRM | DstMem | Priv | Op3264 | NoMod, dr_read, check_dr_read), -- cgit v1.2.3 From 1715d0dcb0d4231983f1580e265c748cd3371f55 Mon Sep 17 00:00:00 2001 From: Nadav Amit Date: Tue, 30 Sep 2014 20:49:18 +0300 Subject: KVM: x86: Wrong assertion on paging_tmpl.h Even after the recent fix, the assertion on paging_tmpl.h is triggered. Apparently, the assertion wants to check that the PAE is always set on long-mode, but does it in incorrect way. Note that the assertion is not enabled unless the code is debugged by defining MMU_DEBUG. Signed-off-by: Nadav Amit Signed-off-by: Paolo Bonzini --- arch/x86/kvm/paging_tmpl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 806d58e3c320..fd49c867b25a 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -298,7 +298,7 @@ retry_walk: } #endif walker->max_level = walker->level; - ASSERT(!is_long_mode(vcpu) && is_pae(vcpu)); + ASSERT(!(is_long_mode(vcpu) && !is_pae(vcpu))); accessed_dirty = PT_GUEST_ACCESSED_MASK; pt_access = pte_access = ACC_ALL; -- cgit v1.2.3 From 4846f1181635e1f68aed0725f71700c15c2fb449 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Fri, 24 Oct 2014 12:23:26 +0200 Subject: MIPS: SEAD3: Fix I2C device registration. This isn't a module and shouldn't be one. Signed-off-by: Ralf Baechle --- arch/mips/mti-sead3/sead3-i2c.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) (limited to 'arch') diff --git a/arch/mips/mti-sead3/sead3-i2c.c b/arch/mips/mti-sead3/sead3-i2c.c index f70d5fc58ef5..795ae83894e0 100644 --- a/arch/mips/mti-sead3/sead3-i2c.c +++ b/arch/mips/mti-sead3/sead3-i2c.c @@ -5,10 +5,8 @@ * * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. */ -#include #include #include -#include struct resource sead3_i2c_resources[] = { { @@ -30,8 +28,4 @@ static int __init sead3_i2c_init(void) return platform_device_register(&sead3_i2c_device); } -module_init(sead3_i2c_init); - -MODULE_AUTHOR("Chris Dearman "); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("I2C probe driver for SEAD3"); +device_initcall(sead3_i2c_init); -- cgit v1.2.3 From 92980405f3537136b8e81007a9df576762f49bbb Mon Sep 17 00:00:00 2001 From: Arun Chandran Date: Fri, 10 Oct 2014 12:31:24 +0100 Subject: arm64: ASLR: Don't randomise text when randomise_va_space == 0 When user asks to turn off ASLR by writing "0" to /proc/sys/kernel/randomize_va_space there should not be any randomization to mmap base, stack, VDSO, libs, text and heap Currently arm64 violates this behavior by randomising text. Fix this by defining a constant ELF_ET_DYN_BASE. The randomisation of mm->mmap_base is done by setup_new_exec -> arch_pick_mmap_layout -> mmap_base -> mmap_rnd. Signed-off-by: Arun Chandran Signed-off-by: Catalin Marinas --- arch/arm64/Kconfig | 1 + arch/arm64/include/asm/elf.h | 4 ++-- arch/arm64/kernel/process.c | 5 ----- 3 files changed, 3 insertions(+), 7 deletions(-) (limited to 'arch') diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index b8053be1d803..9532f8d5857e 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1,5 +1,6 @@ config ARM64 def_bool y + select ARCH_BINFMT_ELF_RANDOMIZE_PIE select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select ARCH_HAS_SG_CHAIN select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h index 01d3aab64b79..1f65be393139 100644 --- a/arch/arm64/include/asm/elf.h +++ b/arch/arm64/include/asm/elf.h @@ -126,7 +126,7 @@ typedef struct user_fpsimd_state elf_fpregset_t; * that it will "exec", and that there is sufficient room for the brk. */ extern unsigned long randomize_et_dyn(unsigned long base); -#define ELF_ET_DYN_BASE (randomize_et_dyn(2 * TASK_SIZE_64 / 3)) +#define ELF_ET_DYN_BASE (2 * TASK_SIZE_64 / 3) /* * When the program starts, a1 contains a pointer to a function to be @@ -169,7 +169,7 @@ extern unsigned long arch_randomize_brk(struct mm_struct *mm); #define COMPAT_ELF_PLATFORM ("v8l") #endif -#define COMPAT_ELF_ET_DYN_BASE (randomize_et_dyn(2 * TASK_SIZE_32 / 3)) +#define COMPAT_ELF_ET_DYN_BASE (2 * TASK_SIZE_32 / 3) /* AArch32 registers. */ #define COMPAT_ELF_NGREG 18 diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index c3065dbc4fa2..fde9923af859 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -378,8 +378,3 @@ unsigned long arch_randomize_brk(struct mm_struct *mm) { return randomize_base(mm->brk); } - -unsigned long randomize_et_dyn(unsigned long base) -{ - return randomize_base(base); -} -- cgit v1.2.3 From ef3e035c3a9b81da8a778bc333d10637acf6c199 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 23 Oct 2014 12:58:13 -0700 Subject: sparc64: Fix register corruption in top-most kernel stack frame during boot. Meelis Roos reported that kernels built with gcc-4.9 do not boot, we eventually narrowed this down to only impacting machines using UltraSPARC-III and derivitive cpus. The crash happens right when the first user process is spawned: [ 54.451346] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004 [ 54.451346] [ 54.571516] CPU: 1 PID: 1 Comm: init Not tainted 3.16.0-rc2-00211-gd7933ab #96 [ 54.666431] Call Trace: [ 54.698453] [0000000000762f8c] panic+0xb0/0x224 [ 54.759071] [000000000045cf68] do_exit+0x948/0x960 [ 54.823123] [000000000042cbc0] fault_in_user_windows+0xe0/0x100 [ 54.902036] [0000000000404ad0] __handle_user_windows+0x0/0x10 [ 54.978662] Press Stop-A (L1-A) to return to the boot prom [ 55.050713] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004 Further investigation showed that compiling only per_cpu_patch() with an older compiler fixes the boot. Detailed analysis showed that the function is not being miscompiled by gcc-4.9, but it is using a different register allocation ordering. With the gcc-4.9 compiled function, something during the code patching causes some of the %i* input registers to get corrupted. Perhaps we have a TLB miss path into the firmware that is deep enough to cause a register window spill and subsequent restore when we get back from the TLB miss trap. Let's plug this up by doing two things: 1) Stop using the firmware stack for client interface calls into the firmware. Just use the kernel's stack. 2) As soon as we can, call into a new function "start_early_boot()" to put a one-register-window buffer between the firmware's deepest stack frame and the top-most initial kernel one. Reported-by: Meelis Roos Tested-by: Meelis Roos Signed-off-by: David S. Miller --- arch/sparc/include/asm/oplib_64.h | 3 ++- arch/sparc/include/asm/setup.h | 2 ++ arch/sparc/kernel/entry.h | 3 --- arch/sparc/kernel/head_64.S | 40 ++++----------------------------------- arch/sparc/kernel/hvtramp.S | 1 - arch/sparc/kernel/setup_64.c | 28 +++++++++++++++++++-------- arch/sparc/kernel/trampoline_64.S | 12 +++++++----- arch/sparc/prom/cif.S | 5 ++--- arch/sparc/prom/init_64.c | 6 +++--- arch/sparc/prom/p1275.c | 2 -- 10 files changed, 40 insertions(+), 62 deletions(-) (limited to 'arch') diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h index f34682430fcf..2e3a4add8591 100644 --- a/arch/sparc/include/asm/oplib_64.h +++ b/arch/sparc/include/asm/oplib_64.h @@ -62,7 +62,8 @@ struct linux_mem_p1275 { /* You must call prom_init() before using any of the library services, * preferably as early as possible. Pass it the romvec pointer. */ -void prom_init(void *cif_handler, void *cif_stack); +void prom_init(void *cif_handler); +void prom_init_report(void); /* Boot argument acquisition, returns the boot command line string. */ char *prom_getbootargs(void); diff --git a/arch/sparc/include/asm/setup.h b/arch/sparc/include/asm/setup.h index f5fffd84d0dd..29d64b1758ed 100644 --- a/arch/sparc/include/asm/setup.h +++ b/arch/sparc/include/asm/setup.h @@ -48,6 +48,8 @@ unsigned long safe_compute_effective_address(struct pt_regs *, unsigned int); #endif #ifdef CONFIG_SPARC64 +void __init start_early_boot(void); + /* unaligned_64.c */ int handle_ldf_stq(u32 insn, struct pt_regs *regs); void handle_ld_nf(u32 insn, struct pt_regs *regs); diff --git a/arch/sparc/kernel/entry.h b/arch/sparc/kernel/entry.h index ebaba6167dd4..88d322b67fac 100644 --- a/arch/sparc/kernel/entry.h +++ b/arch/sparc/kernel/entry.h @@ -65,13 +65,10 @@ struct pause_patch_entry { extern struct pause_patch_entry __pause_3insn_patch, __pause_3insn_patch_end; -void __init per_cpu_patch(void); void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *, struct sun4v_1insn_patch_entry *); void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *, struct sun4v_2insn_patch_entry *); -void __init sun4v_patch(void); -void __init boot_cpu_id_too_large(int cpu); extern unsigned int dcache_parity_tl1_occurred; extern unsigned int icache_parity_tl1_occurred; diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S index 4fdeb8040d4d..3d61fcae7ee3 100644 --- a/arch/sparc/kernel/head_64.S +++ b/arch/sparc/kernel/head_64.S @@ -672,14 +672,12 @@ tlb_fixup_done: sethi %hi(init_thread_union), %g6 or %g6, %lo(init_thread_union), %g6 ldx [%g6 + TI_TASK], %g4 - mov %sp, %l6 wr %g0, ASI_P, %asi mov 1, %g1 sllx %g1, THREAD_SHIFT, %g1 sub %g1, (STACKFRAME_SZ + STACK_BIAS), %g1 add %g6, %g1, %sp - mov 0, %fp /* Set per-cpu pointer initially to zero, this makes * the boot-cpu use the in-kernel-image per-cpu areas @@ -706,44 +704,14 @@ tlb_fixup_done: nop #endif - mov %l6, %o1 ! OpenPROM stack call prom_init mov %l7, %o0 ! OpenPROM cif handler - /* Initialize current_thread_info()->cpu as early as possible. - * In order to do that accurately we have to patch up the get_cpuid() - * assembler sequences. And that, in turn, requires that we know - * if we are on a Starfire box or not. While we're here, patch up - * the sun4v sequences as well. + /* To create a one-register-window buffer between the kernel's + * initial stack and the last stack frame we use from the firmware, + * do the rest of the boot from a C helper function. */ - call check_if_starfire - nop - call per_cpu_patch - nop - call sun4v_patch - nop - -#ifdef CONFIG_SMP - call hard_smp_processor_id - nop - cmp %o0, NR_CPUS - blu,pt %xcc, 1f - nop - call boot_cpu_id_too_large - nop - /* Not reached... */ - -1: -#else - mov 0, %o0 -#endif - sth %o0, [%g6 + TI_CPU] - - call prom_init_report - nop - - /* Off we go.... */ - call start_kernel + call start_early_boot nop /* Not reached... */ diff --git a/arch/sparc/kernel/hvtramp.S b/arch/sparc/kernel/hvtramp.S index b7ddcdd1dea9..cdbfec299f2f 100644 --- a/arch/sparc/kernel/hvtramp.S +++ b/arch/sparc/kernel/hvtramp.S @@ -109,7 +109,6 @@ hv_cpu_startup: sllx %g5, THREAD_SHIFT, %g5 sub %g5, (STACKFRAME_SZ + STACK_BIAS), %g5 add %g6, %g5, %sp - mov 0, %fp call init_irqwork_curcpu nop diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c index e629b8377587..c38d19fc27ba 100644 --- a/arch/sparc/kernel/setup_64.c +++ b/arch/sparc/kernel/setup_64.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include @@ -162,7 +163,7 @@ char reboot_command[COMMAND_LINE_SIZE]; static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 }; -void __init per_cpu_patch(void) +static void __init per_cpu_patch(void) { struct cpuid_patch_entry *p; unsigned long ver; @@ -254,7 +255,7 @@ void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *start, } } -void __init sun4v_patch(void) +static void __init sun4v_patch(void) { extern void sun4v_hvapi_init(void); @@ -323,14 +324,25 @@ static void __init pause_patch(void) } } -#ifdef CONFIG_SMP -void __init boot_cpu_id_too_large(int cpu) +void __init start_early_boot(void) { - prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n", - cpu, NR_CPUS); - prom_halt(); + int cpu; + + check_if_starfire(); + per_cpu_patch(); + sun4v_patch(); + + cpu = hard_smp_processor_id(); + if (cpu >= NR_CPUS) { + prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n", + cpu, NR_CPUS); + prom_halt(); + } + current_thread_info()->cpu = cpu; + + prom_init_report(); + start_kernel(); } -#endif /* On Ultra, we support all of the v8 capabilities. */ unsigned long sparc64_elf_hwcap = (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | diff --git a/arch/sparc/kernel/trampoline_64.S b/arch/sparc/kernel/trampoline_64.S index 737f8cbc7d56..88ede1d53b4c 100644 --- a/arch/sparc/kernel/trampoline_64.S +++ b/arch/sparc/kernel/trampoline_64.S @@ -109,10 +109,13 @@ startup_continue: brnz,pn %g1, 1b nop - sethi %hi(p1275buf), %g2 - or %g2, %lo(p1275buf), %g2 - ldx [%g2 + 0x10], %l2 - add %l2, -(192 + 128), %sp + /* Get onto temporary stack which will be in the locked + * kernel image. + */ + sethi %hi(tramp_stack), %g1 + or %g1, %lo(tramp_stack), %g1 + add %g1, TRAMP_STACK_SIZE, %g1 + sub %g1, STACKFRAME_SZ + STACK_BIAS + 256, %sp flushw /* Setup the loop variables: @@ -394,7 +397,6 @@ after_lock_tlb: sllx %g5, THREAD_SHIFT, %g5 sub %g5, (STACKFRAME_SZ + STACK_BIAS), %g5 add %g6, %g5, %sp - mov 0, %fp rdpr %pstate, %o1 or %o1, PSTATE_IE, %o1 diff --git a/arch/sparc/prom/cif.S b/arch/sparc/prom/cif.S index 9c86b4b7d429..8050f381f518 100644 --- a/arch/sparc/prom/cif.S +++ b/arch/sparc/prom/cif.S @@ -11,11 +11,10 @@ .text .globl prom_cif_direct prom_cif_direct: + save %sp, -192, %sp sethi %hi(p1275buf), %o1 or %o1, %lo(p1275buf), %o1 - ldx [%o1 + 0x0010], %o2 ! prom_cif_stack - save %o2, -192, %sp - ldx [%i1 + 0x0008], %l2 ! prom_cif_handler + ldx [%o1 + 0x0008], %l2 ! prom_cif_handler mov %g4, %l0 mov %g5, %l1 mov %g6, %l3 diff --git a/arch/sparc/prom/init_64.c b/arch/sparc/prom/init_64.c index d95db755828f..110b0d78b864 100644 --- a/arch/sparc/prom/init_64.c +++ b/arch/sparc/prom/init_64.c @@ -26,13 +26,13 @@ phandle prom_chosen_node; * It gets passed the pointer to the PROM vector. */ -extern void prom_cif_init(void *, void *); +extern void prom_cif_init(void *); -void __init prom_init(void *cif_handler, void *cif_stack) +void __init prom_init(void *cif_handler) { phandle node; - prom_cif_init(cif_handler, cif_stack); + prom_cif_init(cif_handler); prom_chosen_node = prom_finddevice(prom_chosen_path); if (!prom_chosen_node || (s32)prom_chosen_node == -1) diff --git a/arch/sparc/prom/p1275.c b/arch/sparc/prom/p1275.c index b2340f008ae0..545d8bb79b65 100644 --- a/arch/sparc/prom/p1275.c +++ b/arch/sparc/prom/p1275.c @@ -20,7 +20,6 @@ struct { long prom_callback; /* 0x00 */ void (*prom_cif_handler)(long *); /* 0x08 */ - unsigned long prom_cif_stack; /* 0x10 */ } p1275buf; extern void prom_world(int); @@ -52,5 +51,4 @@ void p1275_cmd_direct(unsigned long *args) void prom_cif_init(void *cif_handler, void *cif_stack) { p1275buf.prom_cif_handler = (void (*)(long *))cif_handler; - p1275buf.prom_cif_stack = (unsigned long)cif_stack; } -- cgit v1.2.3 From 06090e8ed89ea2113a236befb41f71d51f100e60 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 24 Oct 2014 09:59:02 -0700 Subject: sparc64: Implement __get_user_pages_fast(). It is not sufficient to only implement get_user_pages_fast(), you must also implement the atomic version __get_user_pages_fast() otherwise you end up using the weak symbol fallback implementation which simply returns zero. This is dangerous, because it causes the futex code to loop forever if transparent hugepages are supported (see get_futex_key()). Signed-off-by: David S. Miller --- arch/sparc/mm/gup.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'arch') diff --git a/arch/sparc/mm/gup.c b/arch/sparc/mm/gup.c index 1aed0432c64b..ae6ce383d4df 100644 --- a/arch/sparc/mm/gup.c +++ b/arch/sparc/mm/gup.c @@ -160,6 +160,36 @@ static int gup_pud_range(pgd_t pgd, unsigned long addr, unsigned long end, return 1; } +int __get_user_pages_fast(unsigned long start, int nr_pages, int write, + struct page **pages) +{ + struct mm_struct *mm = current->mm; + unsigned long addr, len, end; + unsigned long next, flags; + pgd_t *pgdp; + int nr = 0; + + start &= PAGE_MASK; + addr = start; + len = (unsigned long) nr_pages << PAGE_SHIFT; + end = start + len; + + local_irq_save(flags); + pgdp = pgd_offset(mm, addr); + do { + pgd_t pgd = *pgdp; + + next = pgd_addr_end(addr, end); + if (pgd_none(pgd)) + break; + if (!gup_pud_range(pgd, addr, next, write, pages, &nr)) + break; + } while (pgdp++, addr = next, addr != end); + local_irq_restore(flags); + + return nr; +} + int get_user_pages_fast(unsigned long start, int nr_pages, int write, struct page **pages) { -- cgit v1.2.3 From 3dec0fe48a8936528aae2fc3f904c2c9a34ba368 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Fri, 24 Oct 2014 18:16:47 +0100 Subject: arm64: Fix memblock current_limit with 64K pages and 48-bit VA With 48-bit VA space, the 64K page configuration uses 3 levels instead of 2 and PUD_SIZE != PMD_SIZE. Since with 64K pages we only cover PMD_SIZE with the initial swapper_pg_dir populated in head.S, the memblock current_limit needs to be set accordingly in map_mem() to avoid allocating unmapped memory. The memblock current_limit is progressively increased as more blocks are mapped. Signed-off-by: Catalin Marinas --- arch/arm64/mm/mmu.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 6894ef3e6234..0bf90d26e745 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -297,11 +297,15 @@ static void __init map_mem(void) * create_mapping requires puds, pmds and ptes to be allocated from * memory addressable from the initial direct kernel mapping. * - * The initial direct kernel mapping, located at swapper_pg_dir, - * gives us PUD_SIZE memory starting from PHYS_OFFSET (which must be - * aligned to 2MB as per Documentation/arm64/booting.txt). + * The initial direct kernel mapping, located at swapper_pg_dir, gives + * us PUD_SIZE (4K pages) or PMD_SIZE (64K pages) memory starting from + * PHYS_OFFSET (which must be aligned to 2MB as per + * Documentation/arm64/booting.txt). */ - limit = PHYS_OFFSET + PUD_SIZE; + if (IS_ENABLED(CONFIG_ARM64_64K_PAGES)) + limit = PHYS_OFFSET + PMD_SIZE; + else + limit = PHYS_OFFSET + PUD_SIZE; memblock_set_current_limit(limit); /* map all the memory banks */ -- cgit v1.2.3 From 26c2d2b39128adba276d140eefa2745591b88536 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Thu, 23 Oct 2014 00:04:03 -0400 Subject: i386/audit: stop scribbling on the stack frame git commit b4f0d3755c5e9cc86292d5fd78261903b4f23d4a was very very dumb. It was writing over %esp/pt_regs semi-randomly on i686 with the expected "system can't boot" results. As noted in: https://bugs.freedesktop.org/show_bug.cgi?id=85277 This patch stops fscking with pt_regs. Instead it sets up the registers for the call to __audit_syscall_entry in the most obvious conceivable way. It then does just a tiny tiny touch of magic. We need to get what started in PT_EDX into 0(%esp) and PT_ESI into 4(%esp). This is as easy as a pair of pushes. After the call to __audit_syscall_entry all we need to do is get that now useless junk off the stack (pair of pops) and reload %eax with the original syscall so other stuff can keep going about it's business. Reported-by: Paulo Zanoni Signed-off-by: Eric Paris Link: http://lkml.kernel.org/r/1414037043-30647-1-git-send-email-eparis@redhat.com Cc: Richard Guy Briggs Signed-off-by: H. Peter Anvin --- arch/x86/kernel/entry_32.S | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index b553ed89e5f5..344b63f18d14 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -447,15 +447,14 @@ sysenter_exit: sysenter_audit: testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%ebp) jnz syscall_trace_entry - addl $4,%esp - CFI_ADJUST_CFA_OFFSET -4 - movl %esi,4(%esp) /* 5th arg: 4th syscall arg */ - movl %edx,(%esp) /* 4th arg: 3rd syscall arg */ - /* %ecx already in %ecx 3rd arg: 2nd syscall arg */ - movl %ebx,%edx /* 2nd arg: 1st syscall arg */ - /* %eax already in %eax 1st arg: syscall number */ + /* movl PT_EAX(%esp), %eax already set, syscall number: 1st arg to audit */ + movl PT_EBX(%esp), %edx /* ebx/a0: 2nd arg to audit */ + /* movl PT_ECX(%esp), %ecx already set, a1: 3nd arg to audit */ + pushl_cfi PT_ESI(%esp) /* a3: 5th arg */ + pushl_cfi PT_EDX+4(%esp) /* a2: 4th arg */ call __audit_syscall_entry - pushl_cfi %ebx + popl_cfi %ecx /* get that remapped edx off the stack */ + popl_cfi %ecx /* get that remapped esi off the stack */ movl PT_EAX(%esp),%eax /* reload syscall number */ jmp sysenter_do_call -- cgit v1.2.3 From a1fc198046181304d28a018dba048b718f2d7ce4 Mon Sep 17 00:00:00 2001 From: Steve Longerbeam Date: Tue, 14 Oct 2014 20:41:49 +0300 Subject: ARM: i.MX6: Fix "emi" clock name typo Fix a typo error, the "emi" names refer to the eim clocks. The change fixes typo in EIM and EIM_SLOW pre-output dividers and selectors clock names. Notably EIM_SLOW clock itself is named correctly. Signed-off-by: Steve Longerbeam [vladimir_zapolskiy@mentor.com: ported to v3.17] Signed-off-by: Vladimir Zapolskiy Cc: Sascha Hauer Signed-off-by: Shawn Guo --- arch/arm/mach-imx/clk-imx6q.c | 14 +++++++------- include/dt-bindings/clock/imx6qdl-clock.h | 8 ++++---- 2 files changed, 11 insertions(+), 11 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index 1412daf4a714..4e79da7c5e30 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -50,8 +50,8 @@ static const char *pcie_axi_sels[] = { "axi", "ahb", }; static const char *ssi_sels[] = { "pll3_pfd2_508m", "pll3_pfd3_454m", "pll4_audio_div", }; static const char *usdhc_sels[] = { "pll2_pfd2_396m", "pll2_pfd0_352m", }; static const char *enfc_sels[] = { "pll2_pfd0_352m", "pll2_bus", "pll3_usb_otg", "pll2_pfd2_396m", }; -static const char *emi_sels[] = { "pll2_pfd2_396m", "pll3_usb_otg", "axi", "pll2_pfd0_352m", }; -static const char *emi_slow_sels[] = { "axi", "pll3_usb_otg", "pll2_pfd2_396m", "pll2_pfd0_352m", }; +static const char *eim_sels[] = { "pll2_pfd2_396m", "pll3_usb_otg", "axi", "pll2_pfd0_352m", }; +static const char *eim_slow_sels[] = { "axi", "pll3_usb_otg", "pll2_pfd2_396m", "pll2_pfd0_352m", }; static const char *vdo_axi_sels[] = { "axi", "ahb", }; static const char *vpu_axi_sels[] = { "axi", "pll2_pfd2_396m", "pll2_pfd0_352m", }; static const char *cko1_sels[] = { "pll3_usb_otg", "pll2_bus", "pll1_sys", "pll5_video_div", @@ -302,8 +302,8 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) clk[IMX6QDL_CLK_USDHC3_SEL] = imx_clk_fixup_mux("usdhc3_sel", base + 0x1c, 18, 1, usdhc_sels, ARRAY_SIZE(usdhc_sels), imx_cscmr1_fixup); clk[IMX6QDL_CLK_USDHC4_SEL] = imx_clk_fixup_mux("usdhc4_sel", base + 0x1c, 19, 1, usdhc_sels, ARRAY_SIZE(usdhc_sels), imx_cscmr1_fixup); clk[IMX6QDL_CLK_ENFC_SEL] = imx_clk_mux("enfc_sel", base + 0x2c, 16, 2, enfc_sels, ARRAY_SIZE(enfc_sels)); - clk[IMX6QDL_CLK_EMI_SEL] = imx_clk_fixup_mux("emi_sel", base + 0x1c, 27, 2, emi_sels, ARRAY_SIZE(emi_sels), imx_cscmr1_fixup); - clk[IMX6QDL_CLK_EMI_SLOW_SEL] = imx_clk_fixup_mux("emi_slow_sel", base + 0x1c, 29, 2, emi_slow_sels, ARRAY_SIZE(emi_slow_sels), imx_cscmr1_fixup); + clk[IMX6QDL_CLK_EIM_SEL] = imx_clk_fixup_mux("eim_sel", base + 0x1c, 27, 2, eim_sels, ARRAY_SIZE(eim_sels), imx_cscmr1_fixup); + clk[IMX6QDL_CLK_EIM_SLOW_SEL] = imx_clk_fixup_mux("eim_slow_sel", base + 0x1c, 29, 2, eim_slow_sels, ARRAY_SIZE(eim_slow_sels), imx_cscmr1_fixup); clk[IMX6QDL_CLK_VDO_AXI_SEL] = imx_clk_mux("vdo_axi_sel", base + 0x18, 11, 1, vdo_axi_sels, ARRAY_SIZE(vdo_axi_sels)); clk[IMX6QDL_CLK_VPU_AXI_SEL] = imx_clk_mux("vpu_axi_sel", base + 0x18, 14, 2, vpu_axi_sels, ARRAY_SIZE(vpu_axi_sels)); clk[IMX6QDL_CLK_CKO1_SEL] = imx_clk_mux("cko1_sel", base + 0x60, 0, 4, cko1_sels, ARRAY_SIZE(cko1_sels)); @@ -354,8 +354,8 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) clk[IMX6QDL_CLK_USDHC4_PODF] = imx_clk_divider("usdhc4_podf", "usdhc4_sel", base + 0x24, 22, 3); clk[IMX6QDL_CLK_ENFC_PRED] = imx_clk_divider("enfc_pred", "enfc_sel", base + 0x2c, 18, 3); clk[IMX6QDL_CLK_ENFC_PODF] = imx_clk_divider("enfc_podf", "enfc_pred", base + 0x2c, 21, 6); - clk[IMX6QDL_CLK_EMI_PODF] = imx_clk_fixup_divider("emi_podf", "emi_sel", base + 0x1c, 20, 3, imx_cscmr1_fixup); - clk[IMX6QDL_CLK_EMI_SLOW_PODF] = imx_clk_fixup_divider("emi_slow_podf", "emi_slow_sel", base + 0x1c, 23, 3, imx_cscmr1_fixup); + clk[IMX6QDL_CLK_EIM_PODF] = imx_clk_fixup_divider("eim_podf", "eim_sel", base + 0x1c, 20, 3, imx_cscmr1_fixup); + clk[IMX6QDL_CLK_EIM_SLOW_PODF] = imx_clk_fixup_divider("eim_slow_podf", "eim_slow_sel", base + 0x1c, 23, 3, imx_cscmr1_fixup); clk[IMX6QDL_CLK_VPU_AXI_PODF] = imx_clk_divider("vpu_axi_podf", "vpu_axi_sel", base + 0x24, 25, 3); clk[IMX6QDL_CLK_CKO1_PODF] = imx_clk_divider("cko1_podf", "cko1_sel", base + 0x60, 4, 3); clk[IMX6QDL_CLK_CKO2_PODF] = imx_clk_divider("cko2_podf", "cko2_sel", base + 0x60, 21, 3); @@ -456,7 +456,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) clk[IMX6QDL_CLK_USDHC2] = imx_clk_gate2("usdhc2", "usdhc2_podf", base + 0x80, 4); clk[IMX6QDL_CLK_USDHC3] = imx_clk_gate2("usdhc3", "usdhc3_podf", base + 0x80, 6); clk[IMX6QDL_CLK_USDHC4] = imx_clk_gate2("usdhc4", "usdhc4_podf", base + 0x80, 8); - clk[IMX6QDL_CLK_EIM_SLOW] = imx_clk_gate2("eim_slow", "emi_slow_podf", base + 0x80, 10); + clk[IMX6QDL_CLK_EIM_SLOW] = imx_clk_gate2("eim_slow", "eim_slow_podf", base + 0x80, 10); clk[IMX6QDL_CLK_VDO_AXI] = imx_clk_gate2("vdo_axi", "vdo_axi_sel", base + 0x80, 12); clk[IMX6QDL_CLK_VPU_AXI] = imx_clk_gate2("vpu_axi", "vpu_axi_podf", base + 0x80, 14); clk[IMX6QDL_CLK_CKO1] = imx_clk_gate("cko1", "cko1_podf", base + 0x60, 7); diff --git a/include/dt-bindings/clock/imx6qdl-clock.h b/include/dt-bindings/clock/imx6qdl-clock.h index ddaef8620b2c..b690cdba163b 100644 --- a/include/dt-bindings/clock/imx6qdl-clock.h +++ b/include/dt-bindings/clock/imx6qdl-clock.h @@ -62,8 +62,8 @@ #define IMX6QDL_CLK_USDHC3_SEL 50 #define IMX6QDL_CLK_USDHC4_SEL 51 #define IMX6QDL_CLK_ENFC_SEL 52 -#define IMX6QDL_CLK_EMI_SEL 53 -#define IMX6QDL_CLK_EMI_SLOW_SEL 54 +#define IMX6QDL_CLK_EIM_SEL 53 +#define IMX6QDL_CLK_EIM_SLOW_SEL 54 #define IMX6QDL_CLK_VDO_AXI_SEL 55 #define IMX6QDL_CLK_VPU_AXI_SEL 56 #define IMX6QDL_CLK_CKO1_SEL 57 @@ -106,8 +106,8 @@ #define IMX6QDL_CLK_USDHC4_PODF 94 #define IMX6QDL_CLK_ENFC_PRED 95 #define IMX6QDL_CLK_ENFC_PODF 96 -#define IMX6QDL_CLK_EMI_PODF 97 -#define IMX6QDL_CLK_EMI_SLOW_PODF 98 +#define IMX6QDL_CLK_EIM_PODF 97 +#define IMX6QDL_CLK_EIM_SLOW_PODF 98 #define IMX6QDL_CLK_VPU_AXI_PODF 99 #define IMX6QDL_CLK_CKO1_PODF 100 #define IMX6QDL_CLK_AXI 101 -- cgit v1.2.3 From d1e61eb443dc7512885dfe89ee2f2a1c29fcb1da Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Mon, 20 Oct 2014 11:08:01 -0200 Subject: ARM: dts: imx28-evk: Let i2c0 run at 100kHz Commit 78b81f4666fb ("ARM: dts: imx28-evk: Run I2C0 at 400kHz") caused issues when doing the following sequence in loop: - Boot the kernel - Perform audio playback - Reboot the system via 'reboot' command In many times the audio card cannot be probed, which causes playback to fail. After restoring to the original i2c0 frequency of 100kHz there is no such problem anymore. This reverts commit 78b81f4666fbb22a20b1e63e5baf197ad2e90e88. Cc: # 3.16+ Signed-off-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx28-evk.dts | 1 - 1 file changed, 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/imx28-evk.dts b/arch/arm/boot/dts/imx28-evk.dts index 09664fcf5afb..0e13b4b10a92 100644 --- a/arch/arm/boot/dts/imx28-evk.dts +++ b/arch/arm/boot/dts/imx28-evk.dts @@ -193,7 +193,6 @@ i2c0: i2c@80058000 { pinctrl-names = "default"; pinctrl-0 = <&i2c0_pins_a>; - clock-frequency = <400000>; status = "okay"; sgtl5000: codec@0a { -- cgit v1.2.3 From 4cbbbb43d666468d87f99676cf05fb5154d1228b Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Mon, 27 Oct 2014 08:28:16 +0100 Subject: microblaze: Fix missing NR_CPUS in menuconfig The time Kconfig expects that NR_CPUS is defined. This patch remove this config warning: "kernel/time/Kconfig:163:warning: range is invalid" Signed-off-by: Michal Simek --- arch/microblaze/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch') diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 6feded3b0c4c..a7736fa0580c 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -129,6 +129,10 @@ endmenu menu "Kernel features" +config NR_CPUS + int + default "1" + config ADVANCED_OPTIONS bool "Prompt for advanced kernel configuration options" help -- cgit v1.2.3 From 70dcd942dc4af3cc6c3dcc2ba499cd841c7f65a7 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Mon, 27 Oct 2014 08:15:25 +0100 Subject: microblaze: Fix IO space breakage after of_pci_range_to_resource() change Commit 0b0b0893d49b "of/pci: Fix the conversion of IO ranges into IO resources" changed the behaviour of of_pci_range_to_resource(). The issue is described here: "powerpc/pci: Fix IO space breakage after of_pci_range_to_resource() change" (sha1: aeba3731b150188685225b510886f1370d8814de) Signed-off-by: Michal Simek --- arch/microblaze/pci/pci-common.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c index 9037914f6985..b30e41c0c033 100644 --- a/arch/microblaze/pci/pci-common.c +++ b/arch/microblaze/pci/pci-common.c @@ -660,8 +660,13 @@ void pci_process_bridge_OF_ranges(struct pci_controller *hose, res = &hose->mem_resources[memno++]; break; } - if (res != NULL) - of_pci_range_to_resource(&range, dev, res); + if (res != NULL) { + res->name = dev->full_name; + res->flags = range.flags; + res->start = range.cpu_addr; + res->end = range.cpu_addr + range.size - 1; + res->parent = res->child = res->sibling = NULL; + } } /* If there's an ISA hole and the pci_mem_offset is -not- matching -- cgit v1.2.3 From a4f174dee4ae842e07cab7eeec194a3e60925c8d Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Mon, 27 Oct 2014 08:35:11 +0100 Subject: microblaze: Wire up bpf syscall Add new bpf syscall. Signed-off-by: Michal Simek --- arch/microblaze/include/asm/unistd.h | 2 +- arch/microblaze/include/uapi/asm/unistd.h | 1 + arch/microblaze/kernel/syscall_table.S | 1 + 3 files changed, 3 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/microblaze/include/asm/unistd.h b/arch/microblaze/include/asm/unistd.h index ea4b233647c1..0a53362d5548 100644 --- a/arch/microblaze/include/asm/unistd.h +++ b/arch/microblaze/include/asm/unistd.h @@ -38,6 +38,6 @@ #endif /* __ASSEMBLY__ */ -#define __NR_syscalls 387 +#define __NR_syscalls 388 #endif /* _ASM_MICROBLAZE_UNISTD_H */ diff --git a/arch/microblaze/include/uapi/asm/unistd.h b/arch/microblaze/include/uapi/asm/unistd.h index 1c2380bf8fe6..c712677f8a2a 100644 --- a/arch/microblaze/include/uapi/asm/unistd.h +++ b/arch/microblaze/include/uapi/asm/unistd.h @@ -402,5 +402,6 @@ #define __NR_seccomp 384 #define __NR_getrandom 385 #define __NR_memfd_create 386 +#define __NR_bpf 387 #endif /* _UAPI_ASM_MICROBLAZE_UNISTD_H */ diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S index de59ee1d7010..0166e890486c 100644 --- a/arch/microblaze/kernel/syscall_table.S +++ b/arch/microblaze/kernel/syscall_table.S @@ -387,3 +387,4 @@ ENTRY(sys_call_table) .long sys_seccomp .long sys_getrandom /* 385 */ .long sys_memfd_create + .long sys_bpf -- cgit v1.2.3 From bf19edd290d5d2d53bba53f7f4cb2f7492997009 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Tue, 28 Oct 2014 12:13:32 +1100 Subject: Revert "powerpc/powernv: Fix endian bug in LPC bus debugfs accessors" This reverts commit bf7588a0859580a45c63cb082825d77c13eca357. Ben says although the code is not correct "[this] fix was completely wrong and does more damages than it fixes things." Acked-by: Benjamin Herrenschmidt Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/opal-lpc.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/platforms/powernv/opal-lpc.c b/arch/powerpc/platforms/powernv/opal-lpc.c index dd2c285ad170..ad4b31df779a 100644 --- a/arch/powerpc/platforms/powernv/opal-lpc.c +++ b/arch/powerpc/platforms/powernv/opal-lpc.c @@ -191,7 +191,6 @@ static ssize_t lpc_debug_read(struct file *filp, char __user *ubuf, { struct lpc_debugfs_entry *lpc = filp->private_data; u32 data, pos, len, todo; - __be32 bedata; int rc; if (!access_ok(VERIFY_WRITE, ubuf, count)) @@ -214,10 +213,9 @@ static ssize_t lpc_debug_read(struct file *filp, char __user *ubuf, len = 2; } rc = opal_lpc_read(opal_lpc_chip_id, lpc->lpc_type, pos, - &bedata, len); + &data, len); if (rc) return -ENXIO; - data = be32_to_cpu(bedata); switch(len) { case 4: rc = __put_user((u32)data, (u32 __user *)ubuf); -- cgit v1.2.3 From 3c325f8233c35fb35dec3744ba01634aab4ea36a Mon Sep 17 00:00:00 2001 From: Weijie Yang Date: Fri, 24 Oct 2014 17:00:34 +0800 Subject: x86, cma: Reserve DMA contiguous area after initmem_init() Fengguang Wu reported a boot crash on the x86 platform via the 0-day Linux Kernel Performance Test: cma: dma_contiguous_reserve: reserving 31 MiB for global area BUG: Int 6: CR2 (null) [<41850786>] dump_stack+0x16/0x18 [<41d2b1db>] early_idt_handler+0x6b/0x6b [<41072227>] ? __phys_addr+0x2e/0xca [<41d4ee4d>] cma_declare_contiguous+0x3c/0x2d7 [<41d6d359>] dma_contiguous_reserve_area+0x27/0x47 [<41d6d4d1>] dma_contiguous_reserve+0x158/0x163 [<41d33e0f>] setup_arch+0x79b/0xc68 [<41d2b7cf>] start_kernel+0x9c/0x456 [<41d2b2ca>] i386_start_kernel+0x79/0x7d (See details at: https://lkml.org/lkml/2014/10/8/708) It is because dma_contiguous_reserve() is called before initmem_init() in x86, the variable high_memory is not initialized but accessed by __pa(high_memory) in dma_contiguous_reserve(). This patch moves dma_contiguous_reserve() after initmem_init() so that high_memory is initialized before accessed. Reported-by: Fengguang Wu Signed-off-by: Weijie Yang Acked-by: Andrew Morton Acked-by: Marek Szyprowski Acked-by: Michal Nazarewicz Cc: iamjoonsoo.kim@lge.com Cc: 'Linux-MM' Cc: 'Weijie Yang' Link: http://lkml.kernel.org/r/000101cfef69%2431e528a0%2495af79e0%24%25yang@samsung.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/setup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 235cfd39e0d7..ab08aa2276fb 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -1128,7 +1128,6 @@ void __init setup_arch(char **cmdline_p) setup_real_mode(); memblock_set_current_limit(get_max_mapped()); - dma_contiguous_reserve(max_pfn_mapped << PAGE_SHIFT); /* * NOTE: On x86-32, only from this point on, fixmaps are ready for use. @@ -1159,6 +1158,7 @@ void __init setup_arch(char **cmdline_p) early_acpi_boot_init(); initmem_init(); + dma_contiguous_reserve(max_pfn_mapped << PAGE_SHIFT); /* * Reserve memory for crash kernel after SRAT is parsed so that it -- cgit v1.2.3 From 03f54397976581e71a3294ac0e6dfcf4aa36e539 Mon Sep 17 00:00:00 2001 From: Ian Munsie Date: Tue, 28 Oct 2014 14:25:29 +1100 Subject: powerpc/mm: Use appropriate ESID mask in copro_calculate_slb() This patch makes copro_calculate_slb() mask the ESID by the correct mask for 1T vs 256M segments. This has no effect by itself as the extra bits were ignored, but it makes debugging the segment table entries easier and means that we can directly compare the ESID values for duplicates without needing to worry about masking in the comparison. This will be used to simplify a comparison in the following patch. Signed-off-by: Ian Munsie Reviewed-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman --- arch/powerpc/mm/copro_fault.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/mm/copro_fault.c b/arch/powerpc/mm/copro_fault.c index 0f9939e693df..5a236f082c78 100644 --- a/arch/powerpc/mm/copro_fault.c +++ b/arch/powerpc/mm/copro_fault.c @@ -99,8 +99,6 @@ int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb) u64 vsid; int psize, ssize; - slb->esid = (ea & ESID_MASK) | SLB_ESID_V; - switch (REGION_ID(ea)) { case USER_REGION_ID: pr_devel("%s: 0x%llx -- USER_REGION_ID\n", __func__, ea); @@ -133,6 +131,7 @@ int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb) vsid |= mmu_psize_defs[psize].sllp | ((ssize == MMU_SEGSIZE_1T) ? SLB_VSID_B_1T : 0); + slb->esid = (ea & (ssize == MMU_SEGSIZE_1T ? ESID_MASK_1T : ESID_MASK)) | SLB_ESID_V; slb->vsid = vsid; return 0; -- cgit v1.2.3 From 009f60e2763568cdcd75bd1cf360c7c7165e2e60 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Sun, 5 Oct 2014 22:23:22 +0200 Subject: sched: stop the unbound recursion in preempt_schedule_context() preempt_schedule_context() does preempt_enable_notrace() at the end and this can call the same function again; exception_exit() is heavy and it is quite possible that need-resched is true again. 1. Change this code to dec preempt_count() and check need_resched() by hand. 2. As Linus suggested, we can use the PREEMPT_ACTIVE bit and avoid the enable/disable dance around __schedule(). But in this case we need to move into sched/core.c. 3. Cosmetic, but x86 forgets to declare this function. This doesn't really matter because it is only called by asm helpers, still it make sense to add the declaration into asm/preempt.h to match preempt_schedule(). Reported-by: Sasha Levin Signed-off-by: Oleg Nesterov Signed-off-by: Peter Zijlstra (Intel) Cc: Alexander Graf Cc: Andrew Morton Cc: Christoph Lameter Cc: Linus Torvalds Cc: Masami Hiramatsu Cc: Steven Rostedt Cc: Peter Anvin Cc: Andy Lutomirski Cc: Denys Vlasenko Cc: Chuck Ebbert Cc: Frederic Weisbecker Link: http://lkml.kernel.org/r/20141005202322.GB27962@redhat.com Signed-off-by: Ingo Molnar --- arch/x86/include/asm/preempt.h | 1 + kernel/context_tracking.c | 40 ---------------------------------------- kernel/sched/core.c | 41 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 42 insertions(+), 40 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h index 7024c12f7bfe..400873450e33 100644 --- a/arch/x86/include/asm/preempt.h +++ b/arch/x86/include/asm/preempt.h @@ -105,6 +105,7 @@ static __always_inline bool should_resched(void) # ifdef CONFIG_CONTEXT_TRACKING extern asmlinkage void ___preempt_schedule_context(void); # define __preempt_schedule_context() asm ("call ___preempt_schedule_context") + extern asmlinkage void preempt_schedule_context(void); # endif #endif diff --git a/kernel/context_tracking.c b/kernel/context_tracking.c index 5664985c46a0..937ecdfdf258 100644 --- a/kernel/context_tracking.c +++ b/kernel/context_tracking.c @@ -107,46 +107,6 @@ void context_tracking_user_enter(void) } NOKPROBE_SYMBOL(context_tracking_user_enter); -#ifdef CONFIG_PREEMPT -/** - * preempt_schedule_context - preempt_schedule called by tracing - * - * The tracing infrastructure uses preempt_enable_notrace to prevent - * recursion and tracing preempt enabling caused by the tracing - * infrastructure itself. But as tracing can happen in areas coming - * from userspace or just about to enter userspace, a preempt enable - * can occur before user_exit() is called. This will cause the scheduler - * to be called when the system is still in usermode. - * - * To prevent this, the preempt_enable_notrace will use this function - * instead of preempt_schedule() to exit user context if needed before - * calling the scheduler. - */ -asmlinkage __visible void __sched notrace preempt_schedule_context(void) -{ - enum ctx_state prev_ctx; - - if (likely(!preemptible())) - return; - - /* - * Need to disable preemption in case user_exit() is traced - * and the tracer calls preempt_enable_notrace() causing - * an infinite recursion. - */ - preempt_disable_notrace(); - prev_ctx = exception_enter(); - preempt_enable_no_resched_notrace(); - - preempt_schedule(); - - preempt_disable_notrace(); - exception_exit(prev_ctx); - preempt_enable_notrace(); -} -EXPORT_SYMBOL_GPL(preempt_schedule_context); -#endif /* CONFIG_PREEMPT */ - /** * context_tracking_user_exit - Inform the context tracking that the CPU is * exiting userspace mode and entering the kernel. diff --git a/kernel/sched/core.c b/kernel/sched/core.c index dde8adb7d0c0..240157c13ddc 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2951,6 +2951,47 @@ asmlinkage __visible void __sched notrace preempt_schedule(void) } NOKPROBE_SYMBOL(preempt_schedule); EXPORT_SYMBOL(preempt_schedule); + +#ifdef CONFIG_CONTEXT_TRACKING +/** + * preempt_schedule_context - preempt_schedule called by tracing + * + * The tracing infrastructure uses preempt_enable_notrace to prevent + * recursion and tracing preempt enabling caused by the tracing + * infrastructure itself. But as tracing can happen in areas coming + * from userspace or just about to enter userspace, a preempt enable + * can occur before user_exit() is called. This will cause the scheduler + * to be called when the system is still in usermode. + * + * To prevent this, the preempt_enable_notrace will use this function + * instead of preempt_schedule() to exit user context if needed before + * calling the scheduler. + */ +asmlinkage __visible void __sched notrace preempt_schedule_context(void) +{ + enum ctx_state prev_ctx; + + if (likely(!preemptible())) + return; + + do { + __preempt_count_add(PREEMPT_ACTIVE); + /* + * Needs preempt disabled in case user_exit() is traced + * and the tracer calls preempt_enable_notrace() causing + * an infinite recursion. + */ + prev_ctx = exception_enter(); + __schedule(); + exception_exit(prev_ctx); + + __preempt_count_sub(PREEMPT_ACTIVE); + barrier(); + } while (need_resched()); +} +EXPORT_SYMBOL_GPL(preempt_schedule_context); +#endif /* CONFIG_CONTEXT_TRACKING */ + #endif /* CONFIG_PREEMPT */ /* -- cgit v1.2.3 From 65d71fe1375b973083733294795bf2b09d45b3c2 Mon Sep 17 00:00:00 2001 From: "Peter Zijlstra (Intel)" Date: Tue, 7 Oct 2014 19:07:33 +0200 Subject: perf: Fix bogus kernel printk Andy spotted the fail in what was intended as a conditional printk level. Reported-by: Andy Lutomirski Fixes: cc6cd47e7395 ("perf/x86: Tone down kernel messages when the PMU check fails in a virtual environment") Signed-off-by: Peter Zijlstra (Intel) Cc: Arnaldo Carvalho de Melo Cc: Linus Torvalds Link: http://lkml.kernel.org/r/20141007124757.GH19379@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 1b8299dd3d91..66451a6b9485 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -243,8 +243,9 @@ static bool check_hw_exists(void) msr_fail: printk(KERN_CONT "Broken PMU hardware detected, using software events only.\n"); - printk(boot_cpu_has(X86_FEATURE_HYPERVISOR) ? KERN_INFO : KERN_ERR - "Failed to access perfctr msr (MSR %x is %Lx)\n", reg, val_new); + printk("%sFailed to access perfctr msr (MSR %x is %Lx)\n", + boot_cpu_has(X86_FEATURE_HYPERVISOR) ? KERN_INFO : KERN_ERR, + reg, val_new); return false; } -- cgit v1.2.3 From c719f56092add9b3d4192f57c64ce7af11105130 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 21 Oct 2014 11:10:21 +0200 Subject: perf: Fix and clean up initialization of pmu::event_idx Andy reported that the current state of event_idx is rather confused. So remove all but the x86_pmu implementation and change the default to return 0 (the safe option). Reported-by: Andy Lutomirski Signed-off-by: Peter Zijlstra (Intel) Cc: Arnaldo Carvalho de Melo Cc: Benjamin Herrenschmidt Cc: Christoph Lameter Cc: Cody P Schafer Cc: Cody P Schafer Cc: Heiko Carstens Cc: Hendrik Brueckner Cc: Himangi Saraogi Cc: Linus Torvalds Cc: Martin Schwidefsky Cc: Michael Ellerman Cc: Paul Gortmaker Cc: Paul Mackerras Cc: sukadev@linux.vnet.ibm.com Cc: Thomas Huth Cc: Vince Weaver Cc: linux390@de.ibm.com Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-s390@vger.kernel.org Signed-off-by: Ingo Molnar --- arch/powerpc/perf/hv-24x7.c | 6 ------ arch/powerpc/perf/hv-gpci.c | 6 ------ arch/s390/kernel/perf_cpum_sf.c | 6 ------ kernel/events/core.c | 15 +-------------- kernel/events/hw_breakpoint.c | 7 ------- 5 files changed, 1 insertion(+), 39 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index 6c8710dd90c9..dba34088da28 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -417,11 +417,6 @@ static int h_24x7_event_add(struct perf_event *event, int flags) return 0; } -static int h_24x7_event_idx(struct perf_event *event) -{ - return 0; -} - static struct pmu h_24x7_pmu = { .task_ctx_nr = perf_invalid_context, @@ -433,7 +428,6 @@ static struct pmu h_24x7_pmu = { .start = h_24x7_event_start, .stop = h_24x7_event_stop, .read = h_24x7_event_update, - .event_idx = h_24x7_event_idx, }; static int hv_24x7_init(void) diff --git a/arch/powerpc/perf/hv-gpci.c b/arch/powerpc/perf/hv-gpci.c index 15fc76c93022..a051fe946c63 100644 --- a/arch/powerpc/perf/hv-gpci.c +++ b/arch/powerpc/perf/hv-gpci.c @@ -246,11 +246,6 @@ static int h_gpci_event_init(struct perf_event *event) return 0; } -static int h_gpci_event_idx(struct perf_event *event) -{ - return 0; -} - static struct pmu h_gpci_pmu = { .task_ctx_nr = perf_invalid_context, @@ -262,7 +257,6 @@ static struct pmu h_gpci_pmu = { .start = h_gpci_event_start, .stop = h_gpci_event_stop, .read = h_gpci_event_update, - .event_idx = h_gpci_event_idx, }; static int hv_gpci_init(void) diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c index 08e761318c17..b878f12a9597 100644 --- a/arch/s390/kernel/perf_cpum_sf.c +++ b/arch/s390/kernel/perf_cpum_sf.c @@ -1411,11 +1411,6 @@ static void cpumsf_pmu_del(struct perf_event *event, int flags) perf_pmu_enable(event->pmu); } -static int cpumsf_pmu_event_idx(struct perf_event *event) -{ - return event->hw.idx; -} - CPUMF_EVENT_ATTR(SF, SF_CYCLES_BASIC, PERF_EVENT_CPUM_SF); CPUMF_EVENT_ATTR(SF, SF_CYCLES_BASIC_DIAG, PERF_EVENT_CPUM_SF_DIAG); @@ -1458,7 +1453,6 @@ static struct pmu cpumf_sampling = { .stop = cpumsf_pmu_stop, .read = cpumsf_pmu_read, - .event_idx = cpumsf_pmu_event_idx, .attr_groups = cpumsf_pmu_attr_groups, }; diff --git a/kernel/events/core.c b/kernel/events/core.c index 1425d07018de..2b02c9fda790 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6071,11 +6071,6 @@ static int perf_swevent_init(struct perf_event *event) return 0; } -static int perf_swevent_event_idx(struct perf_event *event) -{ - return 0; -} - static struct pmu perf_swevent = { .task_ctx_nr = perf_sw_context, @@ -6085,8 +6080,6 @@ static struct pmu perf_swevent = { .start = perf_swevent_start, .stop = perf_swevent_stop, .read = perf_swevent_read, - - .event_idx = perf_swevent_event_idx, }; #ifdef CONFIG_EVENT_TRACING @@ -6204,8 +6197,6 @@ static struct pmu perf_tracepoint = { .start = perf_swevent_start, .stop = perf_swevent_stop, .read = perf_swevent_read, - - .event_idx = perf_swevent_event_idx, }; static inline void perf_tp_register(void) @@ -6431,8 +6422,6 @@ static struct pmu perf_cpu_clock = { .start = cpu_clock_event_start, .stop = cpu_clock_event_stop, .read = cpu_clock_event_read, - - .event_idx = perf_swevent_event_idx, }; /* @@ -6511,8 +6500,6 @@ static struct pmu perf_task_clock = { .start = task_clock_event_start, .stop = task_clock_event_stop, .read = task_clock_event_read, - - .event_idx = perf_swevent_event_idx, }; static void perf_pmu_nop_void(struct pmu *pmu) @@ -6542,7 +6529,7 @@ static void perf_pmu_cancel_txn(struct pmu *pmu) static int perf_event_idx_default(struct perf_event *event) { - return event->hw.idx + 1; + return 0; } /* diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c index 1559fb0b9296..9803a6600d49 100644 --- a/kernel/events/hw_breakpoint.c +++ b/kernel/events/hw_breakpoint.c @@ -605,11 +605,6 @@ static void hw_breakpoint_stop(struct perf_event *bp, int flags) bp->hw.state = PERF_HES_STOPPED; } -static int hw_breakpoint_event_idx(struct perf_event *bp) -{ - return 0; -} - static struct pmu perf_breakpoint = { .task_ctx_nr = perf_sw_context, /* could eventually get its own */ @@ -619,8 +614,6 @@ static struct pmu perf_breakpoint = { .start = hw_breakpoint_start, .stop = hw_breakpoint_stop, .read = hw_breakpoint_pmu_read, - - .event_idx = hw_breakpoint_event_idx, }; int __init init_hw_breakpoint(void) -- cgit v1.2.3 From 7fb0f1de49fc75a0dcec22531f2d0a79fc2fb625 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 24 Oct 2014 09:12:35 +0200 Subject: perf/x86: Fix compile warnings for intel_uncore The uncore drivers require PCI and generate compile time warnings when !CONFIG_PCI. Reported-by: Andrew Morton Signed-off-by: Peter Zijlstra (Intel) Cc: Stephane Eranian Cc: Andi Kleen Cc: Borislav Petkov Cc: Josh Triplett Cc: Stephane Eranian Cc: Yan, Zheng Signed-off-by: Ingo Molnar --- arch/x86/Kconfig | 4 ++++ arch/x86/kernel/cpu/Makefile | 7 +++++-- 2 files changed, 9 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index f2327e88e07c..ded8a6774ac9 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -142,6 +142,10 @@ config INSTRUCTION_DECODER def_bool y depends on KPROBES || PERF_EVENTS || UPROBES +config PERF_EVENTS_INTEL_UNCORE + def_bool y + depends on PERF_EVENTS && SUP_SUP_INTEL && PCI + config OUTPUT_FORMAT string default "elf32-i386" if X86_32 diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile index 01d5453b5502..e27b49d7c922 100644 --- a/arch/x86/kernel/cpu/Makefile +++ b/arch/x86/kernel/cpu/Makefile @@ -39,9 +39,12 @@ obj-$(CONFIG_CPU_SUP_AMD) += perf_event_amd_iommu.o endif obj-$(CONFIG_CPU_SUP_INTEL) += perf_event_p6.o perf_event_knc.o perf_event_p4.o obj-$(CONFIG_CPU_SUP_INTEL) += perf_event_intel_lbr.o perf_event_intel_ds.o perf_event_intel.o -obj-$(CONFIG_CPU_SUP_INTEL) += perf_event_intel_uncore.o perf_event_intel_uncore_snb.o -obj-$(CONFIG_CPU_SUP_INTEL) += perf_event_intel_uncore_snbep.o perf_event_intel_uncore_nhmex.o obj-$(CONFIG_CPU_SUP_INTEL) += perf_event_intel_rapl.o + +obj-$(CONFIG_PERF_EVENTS_INTEL_UNCORE) += perf_event_intel_uncore.o \ + perf_event_intel_uncore_snb.o \ + perf_event_intel_uncore_snbep.o \ + perf_event_intel_uncore_nhmex.o endif -- cgit v1.2.3 From 60e684f0d66369add7aa49fc39785d2f26fe9169 Mon Sep 17 00:00:00 2001 From: "Maciej W. Rozycki" Date: Sun, 26 Oct 2014 16:06:28 +0000 Subject: x86/irq: Fix XT-PIC-XT-PIC in /proc/interrupts Fix duplicate XT-PIC seen in /proc/interrupts on x86 systems that make use of 8259A Programmable Interrupt Controllers. Specifically convert output like this: CPU0 0: 76573 XT-PIC-XT-PIC timer 1: 11 XT-PIC-XT-PIC i8042 2: 0 XT-PIC-XT-PIC cascade 4: 8 XT-PIC-XT-PIC serial 6: 3 XT-PIC-XT-PIC floppy 7: 0 XT-PIC-XT-PIC parport0 8: 1 XT-PIC-XT-PIC rtc0 10: 448 XT-PIC-XT-PIC fddi0 12: 23 XT-PIC-XT-PIC eth0 14: 2464 XT-PIC-XT-PIC ide0 NMI: 0 Non-maskable interrupts ERR: 0 to one like this: CPU0 0: 122033 XT-PIC timer 1: 11 XT-PIC i8042 2: 0 XT-PIC cascade 4: 8 XT-PIC serial 6: 3 XT-PIC floppy 7: 0 XT-PIC parport0 8: 1 XT-PIC rtc0 10: 145 XT-PIC fddi0 12: 31 XT-PIC eth0 14: 2245 XT-PIC ide0 NMI: 0 Non-maskable interrupts ERR: 0 that is one like we used to have from ~2.2 till it was changed sometime. The rationale is there is no value in this duplicate information, it merely clutters output and looks ugly. We only have one handler for 8259A interrupts so there is no need to give it a name separate from the name already given to irq_chip. We could define meaningful names for handlers based on bits in the ELCR register on systems that have it or the value of the LTIM bit we use in ICW1 otherwise (hardcoded to 0 though with MCA support gone), to tell edge-triggered and level-triggered inputs apart. While that information does not affect 8259A interrupt handlers it could help people determine which lines are shareable and which are not. That is material for a separate change though. Any tools that parse /proc/interrupts are supposed not to be affected since it was many years we used the format this change converts back to. Signed-off-by: Maciej W. Rozycki Cc: Linus Torvalds Link: http://lkml.kernel.org/r/alpine.LFD.2.11.1410260147190.21390@eddie.linux-mips.org Signed-off-by: Ingo Molnar --- arch/x86/kernel/i8259.c | 3 +-- arch/x86/kernel/irqinit.c | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c index 8af817105e29..e7cc5370cd2f 100644 --- a/arch/x86/kernel/i8259.c +++ b/arch/x86/kernel/i8259.c @@ -111,8 +111,7 @@ static void make_8259A_irq(unsigned int irq) { disable_irq_nosync(irq); io_apic_irqs &= ~(1<chip; - const char *name = chip->name; int i; #if defined(CONFIG_X86_64) || defined(CONFIG_X86_LOCAL_APIC) @@ -79,7 +78,7 @@ void __init init_ISA_irqs(void) legacy_pic->init(0); for (i = 0; i < nr_legacy_irqs(); i++) - irq_set_chip_and_handler_name(i, chip, handle_level_irq, name); + irq_set_chip_and_handler(i, chip, handle_level_irq); } void __init init_IRQ(void) -- cgit v1.2.3 From c20ce79303c73855d7a2dd0964f153e902ebdbda Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 28 Oct 2014 11:30:43 -0700 Subject: sparc: Hook up bpf system call. Signed-off-by: David S. Miller --- arch/sparc/include/uapi/asm/unistd.h | 3 ++- arch/sparc/kernel/systbls_32.S | 2 +- arch/sparc/kernel/systbls_64.S | 4 ++-- 3 files changed, 5 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/sparc/include/uapi/asm/unistd.h b/arch/sparc/include/uapi/asm/unistd.h index c842a89b1190..46d83842eddc 100644 --- a/arch/sparc/include/uapi/asm/unistd.h +++ b/arch/sparc/include/uapi/asm/unistd.h @@ -414,8 +414,9 @@ #define __NR_seccomp 346 #define __NR_getrandom 347 #define __NR_memfd_create 348 +#define __NR_bpf 349 -#define NR_syscalls 349 +#define NR_syscalls 350 /* Bitmask values returned from kern_features system call. */ #define KERN_FEATURE_MIXED_MODE_STACK 0x00000001 diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S index 6a873c344bc0..ad0cdf497b78 100644 --- a/arch/sparc/kernel/systbls_32.S +++ b/arch/sparc/kernel/systbls_32.S @@ -86,4 +86,4 @@ sys_call_table: /*330*/ .long sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime /*335*/ .long sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev /*340*/ .long sys_ni_syscall, sys_kcmp, sys_finit_module, sys_sched_setattr, sys_sched_getattr -/*345*/ .long sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create +/*345*/ .long sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S index d9151b6490d8..580cde9370c9 100644 --- a/arch/sparc/kernel/systbls_64.S +++ b/arch/sparc/kernel/systbls_64.S @@ -87,7 +87,7 @@ sys_call_table32: /*330*/ .word compat_sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, compat_sys_open_by_handle_at, compat_sys_clock_adjtime .word sys_syncfs, compat_sys_sendmmsg, sys_setns, compat_sys_process_vm_readv, compat_sys_process_vm_writev /*340*/ .word sys_kern_features, sys_kcmp, sys_finit_module, sys_sched_setattr, sys_sched_getattr - .word sys32_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create + .word sys32_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf #endif /* CONFIG_COMPAT */ @@ -166,4 +166,4 @@ sys_call_table: /*330*/ .word sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime .word sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev /*340*/ .word sys_kern_features, sys_kcmp, sys_finit_module, sys_sched_setattr, sys_sched_getattr - .word sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create + .word sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf -- cgit v1.2.3 From 49f8d8c04368d2e29cd26752715367ccafec5b1d Mon Sep 17 00:00:00 2001 From: Nishanth Aravamudan Date: Fri, 17 Oct 2014 17:49:44 -0700 Subject: powerpc/numa: use cached value of update->cpu in update_cpu_topology There isn't any need to keep referring to update->cpu, as we've already checked cpu == update->cpu at this point. Signed-off-by: Nishanth Aravamudan Signed-off-by: Michael Ellerman --- arch/powerpc/mm/numa.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index e5236c24dc07..ef45abf7319e 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1512,8 +1512,8 @@ static int update_cpu_topology(void *data) if (cpu != update->cpu) continue; - unmap_cpu_from_node(update->cpu); - map_cpu_to_node(update->cpu, update->new_nid); + unmap_cpu_from_node(cpu); + map_cpu_to_node(cpu, update->new_nid); vdso_getcpu_init(); } -- cgit v1.2.3 From 2c0a33f9861d38631245f7ef434ecad3413324fb Mon Sep 17 00:00:00 2001 From: Nishanth Aravamudan Date: Fri, 17 Oct 2014 17:50:40 -0700 Subject: powerpc/numa: ensure per-cpu NUMA mappings are correct on topology update We received a report of warning in kernel/sched/core.c where the sched group was NULL on an LPAR after a topology update. This seems to occur because after the topology update has moved the CPUs, cpu_to_node is returning the old value still, which ends up breaking the consistency of the NUMA topology in the per-cpu maps. Ensure that we update the per-cpu fields when we re-map CPUs. Signed-off-by: Nishanth Aravamudan Signed-off-by: Michael Ellerman --- arch/powerpc/mm/numa.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index ef45abf7319e..b9d1dfdbe5bb 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1509,11 +1509,14 @@ static int update_cpu_topology(void *data) cpu = smp_processor_id(); for (update = data; update; update = update->next) { + int new_nid = update->new_nid; if (cpu != update->cpu) continue; unmap_cpu_from_node(cpu); - map_cpu_to_node(cpu, update->new_nid); + map_cpu_to_node(cpu, new_nid); + set_cpu_numa_node(cpu, new_nid); + set_cpu_numa_mem(cpu, local_memory_node(new_nid)); vdso_getcpu_init(); } -- cgit v1.2.3 From d4e1a0af1d3a88cdfc8c954d3005eb8745ec518d Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Tue, 28 Oct 2014 13:57:53 -0400 Subject: x86: Don't enable F00F workaround on Intel Quark processors The Intel Quark processor is a part of family 5, but does not have the F00F bug present in Pentiums of the same family. Pentiums were models 0 through 8, Quark is model 9. Signed-off-by: Dave Jones Cc: Bryan O'Donoghue Link: http://lkml.kernel.org/r/20141028175753.GA12743@redhat.com Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/intel.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index 1ef456273172..9cc6b6f25f42 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -213,12 +213,13 @@ static void intel_workarounds(struct cpuinfo_x86 *c) { #ifdef CONFIG_X86_F00F_BUG /* - * All current models of Pentium and Pentium with MMX technology CPUs + * All models of Pentium and Pentium with MMX technology CPUs * have the F0 0F bug, which lets nonprivileged users lock up the * system. Announce that the fault handler will be checking for it. + * The Quark is also family 5, but does not have the same bug. */ clear_cpu_bug(c, X86_BUG_F00F); - if (!paravirt_enabled() && c->x86 == 5) { + if (!paravirt_enabled() && c->x86 == 5 && c->x86_model < 9) { static int f00f_workaround_enabled; set_cpu_bug(c, X86_BUG_F00F); -- cgit v1.2.3 From f18298595aefa2c836a128ec6e0f75f39965dd81 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 27 Oct 2014 13:21:32 +0800 Subject: x86, intel-mid: Create IRQs for APB timers and RTC timers Intel MID platforms has no legacy interrupts, so no IRQ descriptors preallocated. We need to call mp_map_gsi_to_irq() to create IRQ descriptors for APB timers and RTC timers, otherwise it may cause invalid memory access as: [ 0.116839] BUG: unable to handle kernel NULL pointer dereference at 0000003a [ 0.123803] IP: [] setup_irq+0xf/0x4d Tested-by: Andy Shevchenko Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Greg Kroah-Hartman Cc: H. Peter Anvin Cc: Benjamin Herrenschmidt Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Borislav Petkov Cc: David Cohen Cc: # 3.17 Link: http://lkml.kernel.org/r/1414387308-27148-3-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- arch/x86/kernel/apb_timer.c | 2 -- arch/x86/platform/intel-mid/sfi.c | 2 ++ 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/apb_timer.c b/arch/x86/kernel/apb_timer.c index 5972b108f15a..b708738d016e 100644 --- a/arch/x86/kernel/apb_timer.c +++ b/arch/x86/kernel/apb_timer.c @@ -185,8 +185,6 @@ static void apbt_setup_irq(struct apbt_dev *adev) irq_modify_status(adev->irq, 0, IRQ_MOVE_PCNTXT); irq_set_affinity(adev->irq, cpumask_of(adev->cpu)); - /* APB timer irqs are set up as mp_irqs, timer is edge type */ - __irq_set_handler(adev->irq, handle_edge_irq, 0, "edge"); } /* Should be called with per cpu */ diff --git a/arch/x86/platform/intel-mid/sfi.c b/arch/x86/platform/intel-mid/sfi.c index 3c53a90fdb18..c14ad34776c4 100644 --- a/arch/x86/platform/intel-mid/sfi.c +++ b/arch/x86/platform/intel-mid/sfi.c @@ -106,6 +106,7 @@ int __init sfi_parse_mtmr(struct sfi_table_header *table) mp_irq.dstapic = MP_APIC_ALL; mp_irq.dstirq = pentry->irq; mp_save_irq(&mp_irq); + mp_map_gsi_to_irq(pentry->irq, IOAPIC_MAP_ALLOC); } return 0; @@ -176,6 +177,7 @@ int __init sfi_parse_mrtc(struct sfi_table_header *table) mp_irq.dstapic = MP_APIC_ALL; mp_irq.dstirq = pentry->irq; mp_save_irq(&mp_irq); + mp_map_gsi_to_irq(pentry->irq, IOAPIC_MAP_ALLOC); } return 0; } -- cgit v1.2.3 From b77e8f435337baa1cd15852fb9db3f6d26cd8eb7 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 27 Oct 2014 13:21:33 +0800 Subject: ACPI, irq, x86: Return IRQ instead of GSI in mp_register_gsi() Function mp_register_gsi() returns blindly the GSI number for the ACPI SCI interrupt. That causes a regression when the GSI for ACPI SCI is shared with other devices. The regression was caused by commit 84245af7297ced9e8fe "x86, irq, ACPI: Change __acpi_register_gsi to return IRQ number instead of GSI" and exposed on a SuperMicro system, which shares one GSI between ACPI SCI and PCI device, with following failure: http://sourceforge.net/p/linux1394/mailman/linux1394-user/?viewmonth=201410 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 20 low level) [ 2.699224] firewire_ohci 0000:06:00.0: failed to allocate interrupt 20 Return mp_map_gsi_to_irq(gsi, 0) instead of the GSI number. Reported-and-Tested-by: Daniel Robbins Signed-off-by: Jiang Liu Cc: Konrad Rzeszutek Wilk Cc: Tony Luck Cc: Joerg Roedel Cc: Greg Kroah-Hartman Cc: Benjamin Herrenschmidt Cc: Rafael J. Wysocki Cc: Bjorn Helgaas Cc: Randy Dunlap Cc: Yinghai Lu Cc: Borislav Petkov Cc: Len Brown Cc: Pavel Machek Cc: # 3.17 Link: http://lkml.kernel.org/r/1414387308-27148-4-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- arch/x86/kernel/acpi/boot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index d5c887216fb3..a142e77693e1 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -397,7 +397,7 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger, /* Don't set up the ACPI SCI because it's already set up */ if (acpi_gbl_FADT.sci_interrupt == gsi) - return gsi; + return mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC); trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1; polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1; -- cgit v1.2.3 From d1cd1210834649ce1ca6bafe5ac25d2f40331343 Mon Sep 17 00:00:00 2001 From: Dexuan Cui Date: Wed, 29 Oct 2014 03:53:37 -0700 Subject: x86, pageattr: Prevent overflow in slow_virt_to_phys() for X86_PAE pte_pfn() returns a PFN of long (32 bits in 32-PAE), so "long << PAGE_SHIFT" will overflow for PFNs above 4GB. Due to this issue, some Linux 32-PAE distros, running as guests on Hyper-V, with 5GB memory assigned, can't load the netvsc driver successfully and hence the synthetic network device can't work (we can use the kernel parameter mem=3000M to work around the issue). Cast pte_pfn() to phys_addr_t before shifting. Fixes: "commit d76565344512: x86, mm: Create slow_virt_to_phys()" Signed-off-by: Dexuan Cui Cc: K. Y. Srinivasan Cc: Haiyang Zhang Cc: gregkh@linuxfoundation.org Cc: linux-mm@kvack.org Cc: olaf@aepfle.de Cc: apw@canonical.com Cc: jasowang@redhat.com Cc: dave.hansen@intel.com Cc: riel@redhat.com Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1414580017-27444-1-git-send-email-decui@microsoft.com Signed-off-by: Thomas Gleixner --- arch/x86/mm/pageattr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index ae242a7c11c7..36de293caf25 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -409,7 +409,7 @@ phys_addr_t slow_virt_to_phys(void *__virt_addr) psize = page_level_size(level); pmask = page_level_mask(level); offset = virt_addr & ~pmask; - phys_addr = pte_pfn(*pte) << PAGE_SHIFT; + phys_addr = (phys_addr_t)pte_pfn(*pte) << PAGE_SHIFT; return (phys_addr | offset); } EXPORT_SYMBOL_GPL(slow_virt_to_phys); -- cgit v1.2.3 From 1776b10627e486dd431fe72d8d47e5a865cf65d1 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Wed, 29 Oct 2014 10:18:17 +0100 Subject: perf/x86/intel: Revert incomplete and undocumented Broadwell client support These patches: 86a349a28b24 ("perf/x86/intel: Add Broadwell core support") c46e665f0377 ("perf/x86: Add INST_RETIRED.ALL workarounds") fdda3c4aacec ("perf/x86/intel: Use Broadwell cache event list for Haswell") introduced magic constants and unexplained changes: https://lkml.org/lkml/2014/10/28/1128 https://lkml.org/lkml/2014/10/27/325 https://lkml.org/lkml/2014/8/27/546 https://lkml.org/lkml/2014/10/28/546 Peter Zijlstra has attempted to help out, to clean up the mess: https://lkml.org/lkml/2014/10/28/543 But has not received helpful and constructive replies which makes me doubt wether it can all be finished in time until v3.18 is released. Despite various review feedback the author (Andi Kleen) has answered only few of the review questions and has generally been uncooperative, only giving replies when prompted repeatedly, and only giving minimal answers instead of constructively explaining and helping along the effort. That kind of behavior is not acceptable. There's also a boot crash on Intel E5-1630 v3 CPUs reported for another commit from Andi Kleen: e735b9db12d7 ("perf/x86/intel/uncore: Add Haswell-EP uncore support") https://lkml.org/lkml/2014/10/22/730 Which is not yet resolved. The uncore driver is independent in theory, but the crash makes me worry about how well all these patches were tested and makes me uneasy about the level of interminging that the Broadwell and Haswell code has received by the commits above. As a first step to resolve the mess revert the Broadwell client commits back to the v3.17 version, before we run out of time and problematic code hits a stable upstream kernel. ( If the Haswell-EP crash is not resolved via a simple fix then we'll have to revert the Haswell-EP uncore driver as well. ) The Broadwell client series has to be submitted in a clean fashion, with single, well documented changes per patch. If they are submitted in time and are accepted during review then they can possibly go into v3.19 but will need additional scrutiny due to the rocky history of this patch set. Cc: Andi Kleen Cc: Peter Zijlstra (Intel) Cc: eranian@google.com Cc: Arnaldo Carvalho de Melo Cc: Linus Torvalds Link: http://lkml.kernel.org/r/1409683455-29168-3-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event.c | 9 -- arch/x86/kernel/cpu/perf_event.h | 1 - arch/x86/kernel/cpu/perf_event_intel.c | 173 +-------------------------------- 3 files changed, 2 insertions(+), 181 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 66451a6b9485..143e5f5dc855 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -445,12 +445,6 @@ int x86_pmu_hw_config(struct perf_event *event) if (event->attr.type == PERF_TYPE_RAW) event->hw.config |= event->attr.config & X86_RAW_EVENT_MASK; - if (event->attr.sample_period && x86_pmu.limit_period) { - if (x86_pmu.limit_period(event, event->attr.sample_period) > - event->attr.sample_period) - return -EINVAL; - } - return x86_setup_perfctr(event); } @@ -988,9 +982,6 @@ int x86_perf_event_set_period(struct perf_event *event) if (left > x86_pmu.max_period) left = x86_pmu.max_period; - if (x86_pmu.limit_period) - left = x86_pmu.limit_period(event, left); - per_cpu(pmc_prev_left[idx], smp_processor_id()) = left; /* diff --git a/arch/x86/kernel/cpu/perf_event.h b/arch/x86/kernel/cpu/perf_event.h index d98a34d435d7..fc5eb390b368 100644 --- a/arch/x86/kernel/cpu/perf_event.h +++ b/arch/x86/kernel/cpu/perf_event.h @@ -445,7 +445,6 @@ struct x86_pmu { struct x86_pmu_quirk *quirks; int perfctr_second_write; bool late_ack; - unsigned (*limit_period)(struct perf_event *event, unsigned l); /* * sysfs attrs diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index a73947c53b65..944bf019b74f 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -220,15 +220,6 @@ static struct event_constraint intel_hsw_event_constraints[] = { EVENT_CONSTRAINT_END }; -static struct event_constraint intel_bdw_event_constraints[] = { - FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */ - FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */ - FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */ - INTEL_UEVENT_CONSTRAINT(0x148, 0x4), /* L1D_PEND_MISS.PENDING */ - INTEL_EVENT_CONSTRAINT(0xa3, 0x4), /* CYCLE_ACTIVITY.* */ - EVENT_CONSTRAINT_END -}; - static u64 intel_pmu_event_map(int hw_event) { return intel_perfmon_event_map[hw_event]; @@ -424,126 +415,6 @@ static __initconst const u64 snb_hw_cache_event_ids }; -static __initconst const u64 hsw_hw_cache_event_ids - [PERF_COUNT_HW_CACHE_MAX] - [PERF_COUNT_HW_CACHE_OP_MAX] - [PERF_COUNT_HW_CACHE_RESULT_MAX] = -{ - [ C(L1D ) ] = { - [ C(OP_READ) ] = { - [ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOPS_RETIRED.ALL_LOADS */ - [ C(RESULT_MISS) ] = 0x151, /* L1D.REPLACEMENT */ - }, - [ C(OP_WRITE) ] = { - [ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOPS_RETIRED.ALL_STORES */ - [ C(RESULT_MISS) ] = 0x0, - }, - [ C(OP_PREFETCH) ] = { - [ C(RESULT_ACCESS) ] = 0x0, - [ C(RESULT_MISS) ] = 0x0, - }, - }, - [ C(L1I ) ] = { - [ C(OP_READ) ] = { - [ C(RESULT_ACCESS) ] = 0x0, - [ C(RESULT_MISS) ] = 0x280, /* ICACHE.MISSES */ - }, - [ C(OP_WRITE) ] = { - [ C(RESULT_ACCESS) ] = -1, - [ C(RESULT_MISS) ] = -1, - }, - [ C(OP_PREFETCH) ] = { - [ C(RESULT_ACCESS) ] = 0x0, - [ C(RESULT_MISS) ] = 0x0, - }, - }, - [ C(LL ) ] = { - [ C(OP_READ) ] = { - /* OFFCORE_RESPONSE:ALL_DATA_RD|ALL_CODE_RD */ - [ C(RESULT_ACCESS) ] = 0x1b7, - /* OFFCORE_RESPONSE:ALL_DATA_RD|ALL_CODE_RD|SUPPLIER_NONE| - L3_MISS|ANY_SNOOP */ - [ C(RESULT_MISS) ] = 0x1b7, - }, - [ C(OP_WRITE) ] = { - [ C(RESULT_ACCESS) ] = 0x1b7, /* OFFCORE_RESPONSE:ALL_RFO */ - /* OFFCORE_RESPONSE:ALL_RFO|SUPPLIER_NONE|L3_MISS|ANY_SNOOP */ - [ C(RESULT_MISS) ] = 0x1b7, - }, - [ C(OP_PREFETCH) ] = { - [ C(RESULT_ACCESS) ] = 0x0, - [ C(RESULT_MISS) ] = 0x0, - }, - }, - [ C(DTLB) ] = { - [ C(OP_READ) ] = { - [ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOPS_RETIRED.ALL_LOADS */ - [ C(RESULT_MISS) ] = 0x108, /* DTLB_LOAD_MISSES.MISS_CAUSES_A_WALK */ - }, - [ C(OP_WRITE) ] = { - [ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOPS_RETIRED.ALL_STORES */ - [ C(RESULT_MISS) ] = 0x149, /* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */ - }, - [ C(OP_PREFETCH) ] = { - [ C(RESULT_ACCESS) ] = 0x0, - [ C(RESULT_MISS) ] = 0x0, - }, - }, - [ C(ITLB) ] = { - [ C(OP_READ) ] = { - [ C(RESULT_ACCESS) ] = 0x6085, /* ITLB_MISSES.STLB_HIT */ - [ C(RESULT_MISS) ] = 0x185, /* ITLB_MISSES.MISS_CAUSES_A_WALK */ - }, - [ C(OP_WRITE) ] = { - [ C(RESULT_ACCESS) ] = -1, - [ C(RESULT_MISS) ] = -1, - }, - [ C(OP_PREFETCH) ] = { - [ C(RESULT_ACCESS) ] = -1, - [ C(RESULT_MISS) ] = -1, - }, - }, - [ C(BPU ) ] = { - [ C(OP_READ) ] = { - [ C(RESULT_ACCESS) ] = 0xc4, /* BR_INST_RETIRED.ALL_BRANCHES */ - [ C(RESULT_MISS) ] = 0xc5, /* BR_MISP_RETIRED.ALL_BRANCHES */ - }, - [ C(OP_WRITE) ] = { - [ C(RESULT_ACCESS) ] = -1, - [ C(RESULT_MISS) ] = -1, - }, - [ C(OP_PREFETCH) ] = { - [ C(RESULT_ACCESS) ] = -1, - [ C(RESULT_MISS) ] = -1, - }, - }, -}; - -static __initconst const u64 hsw_hw_cache_extra_regs - [PERF_COUNT_HW_CACHE_MAX] - [PERF_COUNT_HW_CACHE_OP_MAX] - [PERF_COUNT_HW_CACHE_RESULT_MAX] = -{ - [ C(LL ) ] = { - [ C(OP_READ) ] = { - /* OFFCORE_RESPONSE:ALL_DATA_RD|ALL_CODE_RD */ - [ C(RESULT_ACCESS) ] = 0x2d5, - /* OFFCORE_RESPONSE:ALL_DATA_RD|ALL_CODE_RD|SUPPLIER_NONE| - L3_MISS|ANY_SNOOP */ - [ C(RESULT_MISS) ] = 0x3fbc0202d5ull, - }, - [ C(OP_WRITE) ] = { - [ C(RESULT_ACCESS) ] = 0x122, /* OFFCORE_RESPONSE:ALL_RFO */ - /* OFFCORE_RESPONSE:ALL_RFO|SUPPLIER_NONE|L3_MISS|ANY_SNOOP */ - [ C(RESULT_MISS) ] = 0x3fbc020122ull, - }, - [ C(OP_PREFETCH) ] = { - [ C(RESULT_ACCESS) ] = 0x0, - [ C(RESULT_MISS) ] = 0x0, - }, - }, -}; - static __initconst const u64 westmere_hw_cache_event_ids [PERF_COUNT_HW_CACHE_MAX] [PERF_COUNT_HW_CACHE_OP_MAX] @@ -2034,24 +1905,6 @@ hsw_get_event_constraints(struct cpu_hw_events *cpuc, struct perf_event *event) return c; } -/* - * Broadwell: - * The INST_RETIRED.ALL period always needs to have lowest - * 6bits cleared (BDM57). It shall not use a period smaller - * than 100 (BDM11). We combine the two to enforce - * a min-period of 128. - */ -static unsigned bdw_limit_period(struct perf_event *event, unsigned left) -{ - if ((event->hw.config & INTEL_ARCH_EVENT_MASK) == - X86_CONFIG(.event=0xc0, .umask=0x01)) { - if (left < 128) - left = 128; - left &= ~0x3fu; - } - return left; -} - PMU_FORMAT_ATTR(event, "config:0-7" ); PMU_FORMAT_ATTR(umask, "config:8-15" ); PMU_FORMAT_ATTR(edge, "config:18" ); @@ -2692,8 +2545,8 @@ __init int intel_pmu_init(void) case 69: /* 22nm Haswell ULT */ case 70: /* 22nm Haswell + GT3e (Intel Iris Pro graphics) */ x86_pmu.late_ack = true; - memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids)); - memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs)); + memcpy(hw_cache_event_ids, snb_hw_cache_event_ids, sizeof(hw_cache_event_ids)); + memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs, sizeof(hw_cache_extra_regs)); intel_pmu_lbr_init_snb(); @@ -2712,28 +2565,6 @@ __init int intel_pmu_init(void) pr_cont("Haswell events, "); break; - case 61: /* 14nm Broadwell Core-M */ - x86_pmu.late_ack = true; - memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids)); - memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs)); - - intel_pmu_lbr_init_snb(); - - x86_pmu.event_constraints = intel_bdw_event_constraints; - x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints; - x86_pmu.extra_regs = intel_snbep_extra_regs; - x86_pmu.pebs_aliases = intel_pebs_aliases_snb; - /* all extra regs are per-cpu when HT is on */ - x86_pmu.er_flags |= ERF_HAS_RSP_1; - x86_pmu.er_flags |= ERF_NO_HT_SHARING; - - x86_pmu.hw_config = hsw_hw_config; - x86_pmu.get_event_constraints = hsw_get_event_constraints; - x86_pmu.cpu_events = hsw_events_attrs; - x86_pmu.limit_period = bdw_limit_period; - pr_cont("Broadwell events, "); - break; - default: switch (x86_pmu.version) { case 1: -- cgit v1.2.3 From 5417421b270229bfce0795ccc99a4b481e4954ca Mon Sep 17 00:00:00 2001 From: Andriy Skulysh Date: Wed, 29 Oct 2014 14:50:59 -0700 Subject: sh: fix sh770x SCIF memory regions Resources scif1_resources & scif2_resources overlap. Actual SCIF region size is 0x10. This is regression from commit d850acf975be ("sh: Declare SCIF register base and IRQ as resources") Signed-off-by: Andriy Skulysh Acked-by: Laurent Pinchart Cc: Geert Uytterhoeven Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/sh/kernel/cpu/sh3/setup-sh770x.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/sh/kernel/cpu/sh3/setup-sh770x.c b/arch/sh/kernel/cpu/sh3/setup-sh770x.c index 9139d14b9c53..538c10db3537 100644 --- a/arch/sh/kernel/cpu/sh3/setup-sh770x.c +++ b/arch/sh/kernel/cpu/sh3/setup-sh770x.c @@ -118,7 +118,7 @@ static struct plat_sci_port scif0_platform_data = { }; static struct resource scif0_resources[] = { - DEFINE_RES_MEM(0xfffffe80, 0x100), + DEFINE_RES_MEM(0xfffffe80, 0x10), DEFINE_RES_IRQ(evt2irq(0x4e0)), }; @@ -143,7 +143,7 @@ static struct plat_sci_port scif1_platform_data = { }; static struct resource scif1_resources[] = { - DEFINE_RES_MEM(0xa4000150, 0x100), + DEFINE_RES_MEM(0xa4000150, 0x10), DEFINE_RES_IRQ(evt2irq(0x900)), }; @@ -169,7 +169,7 @@ static struct plat_sci_port scif2_platform_data = { }; static struct resource scif2_resources[] = { - DEFINE_RES_MEM(0xa4000140, 0x100), + DEFINE_RES_MEM(0xa4000140, 0x10), DEFINE_RES_IRQ(evt2irq(0x880)), }; -- cgit v1.2.3 From 7d2911c4381555b31ef0bcae42a0dbf9ade7426e Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 30 Oct 2014 09:59:27 -0700 Subject: net: smc91x: Fix gpios for device tree based booting With legacy booting, the platform init code was taking care of the configuring of GPIOs. With device tree based booting, things may or may not work depending what bootloader has configured or if the legacy platform code gets called. Let's add support for the pwrdn and reset GPIOs to the smc91x driver to fix the issues of smc91x not working properly when booted in device tree mode. And let's change n900 to use these settings as some versions of the bootloader do not configure things properly causing errors. Reported-by: Kevin Hilman Signed-off-by: Tony Lindgren Signed-off-by: David S. Miller --- .../devicetree/bindings/net/smsc-lan91c111.txt | 2 + arch/arm/boot/dts/omap3-n900.dts | 2 + arch/arm/mach-omap2/pdata-quirks.c | 3 -- drivers/net/ethernet/smsc/smc91x.c | 58 ++++++++++++++++++++++ drivers/net/ethernet/smsc/smc91x.h | 3 ++ 5 files changed, 65 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/Documentation/devicetree/bindings/net/smsc-lan91c111.txt b/Documentation/devicetree/bindings/net/smsc-lan91c111.txt index 0f8487b88822..e77e167593db 100644 --- a/Documentation/devicetree/bindings/net/smsc-lan91c111.txt +++ b/Documentation/devicetree/bindings/net/smsc-lan91c111.txt @@ -11,3 +11,5 @@ Optional properties: are supported on the device. Valid value for SMSC LAN91c111 are 1, 2 or 4. If it's omitted or invalid, the size would be 2 meaning 16-bit access only. +- power-gpios: GPIO to control the PWRDWN pin +- reset-gpios: GPIO to control the RESET pin diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts index 9b0494a8ab45..286bbf620c77 100644 --- a/arch/arm/boot/dts/omap3-n900.dts +++ b/arch/arm/boot/dts/omap3-n900.dts @@ -665,6 +665,8 @@ bank-width = <2>; pinctrl-names = "default"; pinctrl-0 = <ðernet_pins>; + power-gpios = <&gpio3 22 GPIO_ACTIVE_HIGH>; /* gpio86 */ + reset-gpios = <&gpio6 4 GPIO_ACTIVE_HIGH>; /* gpio164 */ gpmc,device-width = <2>; gpmc,sync-clk-ps = <0>; gpmc,cs-on-ns = <0>; diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index c95346c94829..cec9d6c6442c 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -252,9 +252,6 @@ static void __init nokia_n900_legacy_init(void) platform_device_register(&omap3_rom_rng_device); } - - /* Only on some development boards */ - gpio_request_one(164, GPIOF_OUT_INIT_LOW, "smc91x reset"); } static void __init omap3_tao3530_legacy_init(void) diff --git a/drivers/net/ethernet/smsc/smc91x.c b/drivers/net/ethernet/smsc/smc91x.c index 5e94d00b96b3..2c62208077fe 100644 --- a/drivers/net/ethernet/smsc/smc91x.c +++ b/drivers/net/ethernet/smsc/smc91x.c @@ -81,6 +81,7 @@ static const char version[] = #include #include #include +#include #include #include @@ -2188,6 +2189,41 @@ static const struct of_device_id smc91x_match[] = { {}, }; MODULE_DEVICE_TABLE(of, smc91x_match); + +/** + * of_try_set_control_gpio - configure a gpio if it exists + */ +static int try_toggle_control_gpio(struct device *dev, + struct gpio_desc **desc, + const char *name, int index, + int value, unsigned int nsdelay) +{ + struct gpio_desc *gpio = *desc; + int res; + + gpio = devm_gpiod_get_index(dev, name, index); + if (IS_ERR(gpio)) { + if (PTR_ERR(gpio) == -ENOENT) { + *desc = NULL; + return 0; + } + + return PTR_ERR(gpio); + } + res = gpiod_direction_output(gpio, !value); + if (res) { + dev_err(dev, "unable to toggle gpio %s: %i\n", name, res); + devm_gpiod_put(dev, gpio); + gpio = NULL; + return res; + } + if (nsdelay) + usleep_range(nsdelay, 2 * nsdelay); + gpiod_set_value_cansleep(gpio, value); + *desc = gpio; + + return 0; +} #endif /* @@ -2237,6 +2273,28 @@ static int smc_drv_probe(struct platform_device *pdev) struct device_node *np = pdev->dev.of_node; u32 val; + /* Optional pwrdwn GPIO configured? */ + ret = try_toggle_control_gpio(&pdev->dev, &lp->power_gpio, + "power", 0, 0, 100); + if (ret) + return ret; + + /* + * Optional reset GPIO configured? Minimum 100 ns reset needed + * according to LAN91C96 datasheet page 14. + */ + ret = try_toggle_control_gpio(&pdev->dev, &lp->reset_gpio, + "reset", 0, 0, 100); + if (ret) + return ret; + + /* + * Need to wait for optional EEPROM to load, max 750 us according + * to LAN91C96 datasheet page 55. + */ + if (lp->reset_gpio) + usleep_range(750, 1000); + /* Combination of IO widths supported, default to 16-bit */ if (!of_property_read_u32(np, "reg-io-width", &val)) { if (val & 1) diff --git a/drivers/net/ethernet/smsc/smc91x.h b/drivers/net/ethernet/smsc/smc91x.h index 47dce918eb0f..2a38dacbbd27 100644 --- a/drivers/net/ethernet/smsc/smc91x.h +++ b/drivers/net/ethernet/smsc/smc91x.h @@ -298,6 +298,9 @@ struct smc_local { struct sk_buff *pending_tx_skb; struct tasklet_struct tx_task; + struct gpio_desc *power_gpio; + struct gpio_desc *reset_gpio; + /* version/revision of the SMC91x chip */ int version; -- cgit v1.2.3 From 653bc77af60911ead1f423e588f54fc2547c4957 Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Fri, 31 Oct 2014 18:08:45 -0700 Subject: x86_64, entry: Fix out of bounds read on sysenter Rusty noticed a Really Bad Bug (tm) in my NT fix. The entry code reads out of bounds, causing the NT fix to be unreliable. But, and this is much, much worse, if your stack is somehow just below the top of the direct map (or a hole), you read out of bounds and crash. Excerpt from the crash: [ 1.129513] RSP: 0018:ffff88001da4bf88 EFLAGS: 00010296 2b:* f7 84 24 90 00 00 00 testl $0x4000,0x90(%rsp) That read is deterministically above the top of the stack. I thought I even single-stepped through this code when I wrote it to check the offset, but I clearly screwed it up. Fixes: 8c7aa698baca ("x86_64, entry: Filter RFLAGS.NT on entry from userspace") Reported-by: Rusty Russell Cc: stable@vger.kernel.org Signed-off-by: Andy Lutomirski Signed-off-by: Linus Torvalds --- arch/x86/ia32/ia32entry.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S index 8ffba18395c8..ffe71228fc10 100644 --- a/arch/x86/ia32/ia32entry.S +++ b/arch/x86/ia32/ia32entry.S @@ -157,7 +157,7 @@ ENTRY(ia32_sysenter_target) * ourselves. To save a few cycles, we can check whether * NT was set instead of doing an unconditional popfq. */ - testl $X86_EFLAGS_NT,EFLAGS(%rsp) /* saved EFLAGS match cpu */ + testl $X86_EFLAGS_NT,EFLAGS-ARGOFFSET(%rsp) jnz sysenter_fix_flags sysenter_flags_fixed: -- cgit v1.2.3