From abe511ac85de60f6d6ce1272b91c079d73bf8517 Mon Sep 17 00:00:00 2001 From: Jisheng Zhang Date: Tue, 27 Aug 2013 12:41:14 +0800 Subject: ARM: mvebu: add missing of_node_put() to fix reference leak Add of_node_put to properly decrement the refcount when we are done using a given node. Signed-off-by: Jisheng Zhang Reviewed-by: Ezequiel Garcia Signed-off-by: Jason Cooper Conflicts: arch/arm/mach-mvebu/armada-370-xp.c arch/arm/mach-mvebu/platsmp.c --- arch/arm/mach-mvebu/coherency.c | 8 +++++++- arch/arm/mach-mvebu/pmsu.c | 1 + arch/arm/mach-mvebu/system-controller.c | 1 + 3 files changed, 9 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/mach-mvebu/coherency.c b/arch/arm/mach-mvebu/coherency.c index 4c24303ec481..58adf2fd9cfc 100644 --- a/arch/arm/mach-mvebu/coherency.c +++ b/arch/arm/mach-mvebu/coherency.c @@ -140,6 +140,7 @@ int __init coherency_init(void) coherency_base = of_iomap(np, 0); coherency_cpu_base = of_iomap(np, 1); set_cpu_coherent(cpu_logical_map(smp_processor_id()), 0); + of_node_put(np); } return 0; @@ -147,9 +148,14 @@ int __init coherency_init(void) static int __init coherency_late_init(void) { - if (of_find_matching_node(NULL, of_coherency_table)) + struct device_node *np; + + np = of_find_matching_node(NULL, of_coherency_table); + if (np) { bus_register_notifier(&platform_bus_type, &mvebu_hwcc_platform_nb); + of_node_put(np); + } return 0; } diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c index 3cc4bef6401c..27fc4f049474 100644 --- a/arch/arm/mach-mvebu/pmsu.c +++ b/arch/arm/mach-mvebu/pmsu.c @@ -67,6 +67,7 @@ int __init armada_370_xp_pmsu_init(void) pr_info("Initializing Power Management Service Unit\n"); pmsu_mp_base = of_iomap(np, 0); pmsu_reset_base = of_iomap(np, 1); + of_node_put(np); } return 0; diff --git a/arch/arm/mach-mvebu/system-controller.c b/arch/arm/mach-mvebu/system-controller.c index f875124ff4f9..5175083cdb34 100644 --- a/arch/arm/mach-mvebu/system-controller.c +++ b/arch/arm/mach-mvebu/system-controller.c @@ -98,6 +98,7 @@ static int __init mvebu_system_controller_init(void) BUG_ON(!match); system_controller_base = of_iomap(np, 0); mvebu_sc = (struct mvebu_system_controller *)match->data; + of_node_put(np); } return 0; -- cgit v1.2.3 From 2290414be0c9e360f5909ae0e33f6a2df3980f14 Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Fri, 13 Sep 2013 22:09:52 +0200 Subject: ARM: Kirkwood: Add missing DT reg property to cpu@0 The kirkwood.dtsi cpu@0 node is missing the mandatory reg property. This causes of_get_cpu_node() to fail to find the node and as a result the cpufreq driver fails in its probe function. Signed-off-by: Andrew Lunn Signed-off-by: Jason Cooper --- arch/arm/boot/dts/kirkwood.dtsi | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi index cf7aeaf89e9c..858099f5b966 100644 --- a/arch/arm/boot/dts/kirkwood.dtsi +++ b/arch/arm/boot/dts/kirkwood.dtsi @@ -13,6 +13,7 @@ cpu@0 { device_type = "cpu"; compatible = "marvell,feroceon"; + reg = <0>; clocks = <&core_clk 1>, <&core_clk 3>, <&gate_clk 11>; clock-names = "cpu_clk", "ddrclk", "powersave"; }; -- cgit v1.2.3 From c1bbd430d617faa2bc610c5404486b01d72c34bc Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Tue, 20 Aug 2013 12:45:50 -0300 Subject: ARM: mvebu: Add the reference 25 MHz fixed-clock to Armada XP The Armada XP SoC has a reference 25 MHz fixed-clock that is used in some controllers such as the timer and the watchdog. This commit adds a DT representation of this clock through a fixed-clock compatible node. Signed-off-by: Ezequiel Garcia Reviewed-by: Mike Turquette Acked-by: Gregory CLEMENT Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-xp.dtsi | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi index def125c0eeaa..c8923bd32278 100644 --- a/arch/arm/boot/dts/armada-xp.dtsi +++ b/arch/arm/boot/dts/armada-xp.dtsi @@ -169,4 +169,13 @@ }; }; }; + + clocks { + /* 25 MHz reference crystal */ + refclk: oscillator { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <25000000>; + }; + }; }; -- cgit v1.2.3 From 3a3c07001b0d4a5eec83bb87284048cd75b81510 Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Tue, 20 Aug 2013 12:45:51 -0300 Subject: ARM: mvebu: Add clock properties to Armada XP timer node With the addition of the Armada XP reference clock, we can now model accurately the available clock inputs for the timer: namely, nbclk and refclk. For each of this clock inputs we assign a name, for the driver to select as appropriate. Signed-off-by: Ezequiel Garcia Reviewed-by: Mike Turquette Acked-by: Gregory CLEMENT Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-xp.dtsi | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi index c8923bd32278..3058522f5aad 100644 --- a/arch/arm/boot/dts/armada-xp.dtsi +++ b/arch/arm/boot/dts/armada-xp.dtsi @@ -70,6 +70,8 @@ timer@20300 { compatible = "marvell,armada-xp-timer"; + clocks = <&coreclk 2>, <&refclk>; + clock-names = "nbclk", "fixed"; }; coreclk: mvebu-sar@18230 { -- cgit v1.2.3 From 53ed7812841f107786f69e0437831469ffdeeeee Mon Sep 17 00:00:00 2001 From: Sekhar Nori Date: Tue, 10 Sep 2013 16:30:21 +0530 Subject: ARM: davinci: fix build breakage with DEBUG_LL commit fcf7157 ("ARM: davinci: serial: get rid of davinci_uart_config") introduced build breakage because of a misplaced header file include which cause a bunch of errors when the file is included in assembly code (like debug-macro.S) Fix the build breakage. Reported-by: Alexander Holler Tested-by: Alexander Holler Signed-off-by: Sekhar Nori --- arch/arm/mach-davinci/include/mach/serial.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-davinci/include/mach/serial.h b/arch/arm/mach-davinci/include/mach/serial.h index 52b8571b2e70..ce402cd21fa0 100644 --- a/arch/arm/mach-davinci/include/mach/serial.h +++ b/arch/arm/mach-davinci/include/mach/serial.h @@ -15,8 +15,6 @@ #include -#include - #define DAVINCI_UART0_BASE (IO_PHYS + 0x20000) #define DAVINCI_UART1_BASE (IO_PHYS + 0x20400) #define DAVINCI_UART2_BASE (IO_PHYS + 0x20800) @@ -39,6 +37,8 @@ #define UART_DM646X_SCR_TX_WATERMARK 0x08 #ifndef __ASSEMBLY__ +#include + extern int davinci_serial_init(struct platform_device *); #endif -- cgit v1.2.3 From 016b9eb0c52ed7349ffdb42b4e51c93ad1f5d90a Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 4 Sep 2013 11:00:46 -0700 Subject: ARM: davinci: dm365 evm: fix unused variable warning If neither CONFIG_SND_DM365_AIC3X_CODEC nor CONFIG_SND_DM365_VOICE_CODEC are defined, we may get warnings like: arch/arm/mach-davinci/board-dm365-evm.c:179:33: warning: 'dm365_evm_snd_data' defined but not used [-Wunused-variable] To fix this, just mark the struct as __maybe_unused. Signed-off-by: Brian Norris Cc: Sekhar Nori Cc: Kevin Hilman Cc: Russell King Signed-off-by: Sekhar Nori --- arch/arm/mach-davinci/board-dm365-evm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c index 92b7f770615a..4078ba93776b 100644 --- a/arch/arm/mach-davinci/board-dm365-evm.c +++ b/arch/arm/mach-davinci/board-dm365-evm.c @@ -176,7 +176,7 @@ static struct at24_platform_data eeprom_info = { .context = (void *)0x7f00, }; -static struct snd_platform_data dm365_evm_snd_data = { +static struct snd_platform_data dm365_evm_snd_data __maybe_unused = { .asp_chan_q = EVENTQ_3, }; -- cgit v1.2.3 From df923c1532fb13569de61a7b8887c2ee9ba4a8f7 Mon Sep 17 00:00:00 2001 From: Jiri Prchal Date: Thu, 19 Sep 2013 14:28:39 +0200 Subject: ARM: at91: serial: fix wrong pinctrl_usart2_rts Replace pinctrl_usart2_rts and pinctrl_usart2_cts istead of pinctrl_uart2_*. Signed-off-by: Jiri Prchal Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91sam9x5.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi index cf78ac0b04b1..c68486e1f5b2 100644 --- a/arch/arm/boot/dts/at91sam9x5.dtsi +++ b/arch/arm/boot/dts/at91sam9x5.dtsi @@ -190,12 +190,12 @@ AT91_PIOA 8 AT91_PERIPH_A AT91_PINCTRL_NONE>; /* PA8 periph A */ }; - pinctrl_uart2_rts: uart2_rts-0 { + pinctrl_usart2_rts: usart2_rts-0 { atmel,pins = ; /* PB0 periph B */ }; - pinctrl_uart2_cts: uart2_cts-0 { + pinctrl_usart2_cts: usart2_cts-0 { atmel,pins = ; /* PB1 periph B */ }; -- cgit v1.2.3 From e7cca2546b3bdf6545b16127113a7057e2946efa Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Thu, 19 Sep 2013 15:22:57 +0200 Subject: ARM: at91: at91sam9x5: set default mmc[01] pinctrl-names Reported-by: Jiri Prchal Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91sam9x5.dtsi | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi index c68486e1f5b2..e74dc15efa9d 100644 --- a/arch/arm/boot/dts/at91sam9x5.dtsi +++ b/arch/arm/boot/dts/at91sam9x5.dtsi @@ -556,6 +556,7 @@ interrupts = <12 IRQ_TYPE_LEVEL_HIGH 0>; dmas = <&dma0 1 AT91_DMA_CFG_PER_ID(0)>; dma-names = "rxtx"; + pinctrl-names = "default"; #address-cells = <1>; #size-cells = <0>; status = "disabled"; @@ -567,6 +568,7 @@ interrupts = <26 IRQ_TYPE_LEVEL_HIGH 0>; dmas = <&dma1 1 AT91_DMA_CFG_PER_ID(0)>; dma-names = "rxtx"; + pinctrl-names = "default"; #address-cells = <1>; #size-cells = <0>; status = "disabled"; -- cgit v1.2.3 From 9ceb389dddbcdb87830f01fcf84d94b2da581dae Mon Sep 17 00:00:00 2001 From: Michael Opdenacker Date: Wed, 4 Sep 2013 06:54:39 +0200 Subject: ARM: at91: remove IRQF_DISABLED This flag is a NOOP since 2.6.36 and can be removed. This is an update for 3.11 of a patch already sent for 3.10 Signed-off-by: Michael Opdenacker Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/at91rm9200_time.c | 2 +- arch/arm/mach-at91/at91sam926x_time.c | 2 +- arch/arm/mach-at91/at91x40_time.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c index 180b3024bec3..f607deb40f4d 100644 --- a/arch/arm/mach-at91/at91rm9200_time.c +++ b/arch/arm/mach-at91/at91rm9200_time.c @@ -93,7 +93,7 @@ static irqreturn_t at91rm9200_timer_interrupt(int irq, void *dev_id) static struct irqaction at91rm9200_timer_irq = { .name = "at91_tick", - .flags = IRQF_SHARED | IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, + .flags = IRQF_SHARED | IRQF_TIMER | IRQF_IRQPOLL, .handler = at91rm9200_timer_interrupt, .irq = NR_IRQS_LEGACY + AT91_ID_SYS, }; diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c index 3a4bc2e1a65e..bb392320a0dd 100644 --- a/arch/arm/mach-at91/at91sam926x_time.c +++ b/arch/arm/mach-at91/at91sam926x_time.c @@ -171,7 +171,7 @@ static irqreturn_t at91sam926x_pit_interrupt(int irq, void *dev_id) static struct irqaction at91sam926x_pit_irq = { .name = "at91_tick", - .flags = IRQF_SHARED | IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, + .flags = IRQF_SHARED | IRQF_TIMER | IRQF_IRQPOLL, .handler = at91sam926x_pit_interrupt, .irq = NR_IRQS_LEGACY + AT91_ID_SYS, }; diff --git a/arch/arm/mach-at91/at91x40_time.c b/arch/arm/mach-at91/at91x40_time.c index 2919eba41ff4..c0e637adf65d 100644 --- a/arch/arm/mach-at91/at91x40_time.c +++ b/arch/arm/mach-at91/at91x40_time.c @@ -57,7 +57,7 @@ static irqreturn_t at91x40_timer_interrupt(int irq, void *dev_id) static struct irqaction at91x40_timer_irq = { .name = "at91_tick", - .flags = IRQF_DISABLED | IRQF_TIMER, + .flags = IRQF_TIMER, .handler = at91x40_timer_interrupt }; -- cgit v1.2.3 From ddf7e399024aa908573a08d6339cefa6253b83db Mon Sep 17 00:00:00 2001 From: Quentin Armitage Date: Thu, 19 Sep 2013 12:00:29 +0100 Subject: ARM: kirkwood: Fix address of second XOR engine There appears to be an error in the second address of the second XOR engine in the Kirkwood SoC device tree, which is specified as 0xd0b00 but should be 0x60b00. For confirmation of address see table 581 page 658 of: http://www.marvell.com/embedded-processors/kirkwood/assets/FS_88F6180_9x_6281_OpenSource.pdf Also see definition of XOR1_HIGH_PHYS_BASE in arch/arm/mach-kirkwood/include/mach/kirkwood.h Signed-off-by: Quentin Armitage Reviewed-by: Sebastian Hesselbarth Signed-off-by: Jason Cooper --- arch/arm/boot/dts/kirkwood.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi index 858099f5b966..1335b2e1bed4 100644 --- a/arch/arm/boot/dts/kirkwood.dtsi +++ b/arch/arm/boot/dts/kirkwood.dtsi @@ -168,7 +168,7 @@ xor@60900 { compatible = "marvell,orion-xor"; reg = <0x60900 0x100 - 0xd0B00 0x100>; + 0x60B00 0x100>; status = "okay"; clocks = <&gate_clk 16>; -- cgit v1.2.3 From df1d0584b2292df5b9d576d7e5246e94616220a1 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Thu, 29 Aug 2013 17:14:49 +0200 Subject: ARM: shmobile: update SDHI DT compatibility string to the - format Currently DT compatibility strings of both types can be found in the kernel sources: - and -, whereas a unique format should be followed and the former one is preferred. This patch converts the SDHI MMC driver and its users to the common standard. This is safe for now, since ATM no real products are using this driver with DT. Signed-off-by: Guennadi Liakhovetski Acked-by: Chris Ball [Removed r8a7740.dtsi portion as it is not applicable] Signed-off-by: Simon Horman --- Documentation/devicetree/bindings/mmc/tmio_mmc.txt | 17 ++++++++++------- arch/arm/boot/dts/r8a73a4.dtsi | 6 +++--- arch/arm/boot/dts/r8a7790.dtsi | 8 ++++---- arch/arm/boot/dts/sh73a0.dtsi | 6 +++--- drivers/mmc/host/sh_mobile_sdhi.c | 16 ++++++++-------- 5 files changed, 28 insertions(+), 25 deletions(-) (limited to 'arch') diff --git a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt index df204e18e030..6a2a1160a70d 100644 --- a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt +++ b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt @@ -9,12 +9,15 @@ compulsory and any optional properties, common to all SD/MMC drivers, as described in mmc.txt, can be used. Additionally the following tmio_mmc-specific optional bindings can be used. +Required properties: +- compatible: "renesas,sdhi-shmobile" - a generic sh-mobile SDHI unit + "renesas,sdhi-sh7372" - SDHI IP on SH7372 SoC + "renesas,sdhi-sh73a0" - SDHI IP on SH73A0 SoC + "renesas,sdhi-r8a73a4" - SDHI IP on R8A73A4 SoC + "renesas,sdhi-r8a7740" - SDHI IP on R8A7740 SoC + "renesas,sdhi-r8a7778" - SDHI IP on R8A7778 SoC + "renesas,sdhi-r8a7779" - SDHI IP on R8A7779 SoC + "renesas,sdhi-r8a7790" - SDHI IP on R8A7790 SoC + Optional properties: - toshiba,mmc-wrprotect-disable: write-protect detection is unavailable - -When used with Renesas SDHI hardware, the following compatibility strings -configure various model-specific properties: - -"renesas,sh7372-sdhi": (default) compatible with SH7372 -"renesas,r8a7740-sdhi": compatible with R8A7740: certain MMC/SD commands have to - wait for the interface to become idle. diff --git a/arch/arm/boot/dts/r8a73a4.dtsi b/arch/arm/boot/dts/r8a73a4.dtsi index 6c26caa880f2..658fcc537576 100644 --- a/arch/arm/boot/dts/r8a73a4.dtsi +++ b/arch/arm/boot/dts/r8a73a4.dtsi @@ -193,7 +193,7 @@ }; sdhi0: sdhi@ee100000 { - compatible = "renesas,r8a73a4-sdhi"; + compatible = "renesas,sdhi-r8a73a4"; reg = <0 0xee100000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 165 4>; @@ -202,7 +202,7 @@ }; sdhi1: sdhi@ee120000 { - compatible = "renesas,r8a73a4-sdhi"; + compatible = "renesas,sdhi-r8a73a4"; reg = <0 0xee120000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 166 4>; @@ -211,7 +211,7 @@ }; sdhi2: sdhi@ee140000 { - compatible = "renesas,r8a73a4-sdhi"; + compatible = "renesas,sdhi-r8a73a4"; reg = <0 0xee140000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 167 4>; diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 3b879e7c697c..885f9f4bf26f 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -152,7 +152,7 @@ }; sdhi0: sdhi@ee100000 { - compatible = "renesas,r8a7790-sdhi"; + compatible = "renesas,sdhi-r8a7790"; reg = <0 0xee100000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 165 4>; @@ -161,7 +161,7 @@ }; sdhi1: sdhi@ee120000 { - compatible = "renesas,r8a7790-sdhi"; + compatible = "renesas,sdhi-r8a7790"; reg = <0 0xee120000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 166 4>; @@ -170,7 +170,7 @@ }; sdhi2: sdhi@ee140000 { - compatible = "renesas,r8a7790-sdhi"; + compatible = "renesas,sdhi-r8a7790"; reg = <0 0xee140000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 167 4>; @@ -179,7 +179,7 @@ }; sdhi3: sdhi@ee160000 { - compatible = "renesas,r8a7790-sdhi"; + compatible = "renesas,sdhi-r8a7790"; reg = <0 0xee160000 0 0x100>; interrupt-parent = <&gic>; interrupts = <0 168 4>; diff --git a/arch/arm/boot/dts/sh73a0.dtsi b/arch/arm/boot/dts/sh73a0.dtsi index ba59a5875a10..3955c7606a6f 100644 --- a/arch/arm/boot/dts/sh73a0.dtsi +++ b/arch/arm/boot/dts/sh73a0.dtsi @@ -196,7 +196,7 @@ }; sdhi0: sdhi@ee100000 { - compatible = "renesas,r8a7740-sdhi"; + compatible = "renesas,sdhi-r8a7740"; reg = <0xee100000 0x100>; interrupt-parent = <&gic>; interrupts = <0 83 4 @@ -208,7 +208,7 @@ /* SDHI1 and SDHI2 have no CD pins, no need for CD IRQ */ sdhi1: sdhi@ee120000 { - compatible = "renesas,r8a7740-sdhi"; + compatible = "renesas,sdhi-r8a7740"; reg = <0xee120000 0x100>; interrupt-parent = <&gic>; interrupts = <0 88 4 @@ -219,7 +219,7 @@ }; sdhi2: sdhi@ee140000 { - compatible = "renesas,r8a7740-sdhi"; + compatible = "renesas,sdhi-r8a7740"; reg = <0xee140000 0x100>; interrupt-parent = <&gic>; interrupts = <0 104 4 diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c index 87ed3fb5149a..f344659dceac 100644 --- a/drivers/mmc/host/sh_mobile_sdhi.c +++ b/drivers/mmc/host/sh_mobile_sdhi.c @@ -113,14 +113,14 @@ static const struct sh_mobile_sdhi_ops sdhi_ops = { }; static const struct of_device_id sh_mobile_sdhi_of_match[] = { - { .compatible = "renesas,shmobile-sdhi" }, - { .compatible = "renesas,sh7372-sdhi" }, - { .compatible = "renesas,sh73a0-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, - { .compatible = "renesas,r8a73a4-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, - { .compatible = "renesas,r8a7740-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, - { .compatible = "renesas,r8a7778-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, - { .compatible = "renesas,r8a7779-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, - { .compatible = "renesas,r8a7790-sdhi", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-shmobile" }, + { .compatible = "renesas,sdhi-sh7372" }, + { .compatible = "renesas,sdhi-sh73a0", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-r8a73a4", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-r8a7740", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-r8a7778", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-r8a7779", .data = &sh_mobile_sdhi_of_cfg[0], }, + { .compatible = "renesas,sdhi-r8a7790", .data = &sh_mobile_sdhi_of_cfg[0], }, {}, }; MODULE_DEVICE_TABLE(of, sh_mobile_sdhi_of_match); -- cgit v1.2.3 From 48c8b96f21817aad695246ef020b849d466cc502 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Sat, 14 Sep 2013 04:29:22 +0400 Subject: ARM: shmobile: Lager: add Micrel KSZ8041 PHY fixup Currently on the Lager board NFS timeouts/delays are seen when booting. That turned out to happen because the SoC's ETH_LINK signal turns on and off after each packet. It is connected to Micrel KSZ8041 PHY's LED0 signal. Ether LEDs on the Lager board are named LINK and ACTIVE which corresponds to non-default 01 setting of the PHY control register 1 bits 14-15. The 'sh_eth' driver resets the PHY when opening the network device, so we have to set the mentioned bits back to 01 from the default 00 value which causes bouncing of ETH_LINK. That can be achieved using the PHY platform fixup mechanism if we also modify the driver to use it.. Signed-off-by: Sergei Shtylyov Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/board-lager.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/mach-shmobile/board-lager.c b/arch/arm/mach-shmobile/board-lager.c index ffb6f0ac7606..5930af8d434f 100644 --- a/arch/arm/mach-shmobile/board-lager.c +++ b/arch/arm/mach-shmobile/board-lager.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include #include @@ -155,6 +156,30 @@ static void __init lager_add_standard_devices(void) ðer_pdata, sizeof(ether_pdata)); } +/* + * Ether LEDs on the Lager board are named LINK and ACTIVE which corresponds + * to non-default 01 setting of the Micrel KSZ8041 PHY control register 1 bits + * 14-15. We have to set them back to 01 from the default 00 value each time + * the PHY is reset. It's also important because the PHY's LED0 signal is + * connected to SoC's ETH_LINK signal and in the PHY's default mode it will + * bounce on and off after each packet, which we apparently want to avoid. + */ +static int lager_ksz8041_fixup(struct phy_device *phydev) +{ + u16 phyctrl1 = phy_read(phydev, 0x1e); + + phyctrl1 &= ~0xc000; + phyctrl1 |= 0x4000; + return phy_write(phydev, 0x1e, phyctrl1); +} + +static void __init lager_init(void) +{ + lager_add_standard_devices(); + + phy_register_fixup_for_id("r8a7790-ether-ff:01", lager_ksz8041_fixup); +} + static const char *lager_boards_compat_dt[] __initdata = { "renesas,lager", NULL, @@ -163,6 +188,6 @@ static const char *lager_boards_compat_dt[] __initdata = { DT_MACHINE_START(LAGER_DT, "lager") .init_early = r8a7790_init_delay, .init_time = r8a7790_timer_init, - .init_machine = lager_add_standard_devices, + .init_machine = lager_init, .dt_compat = lager_boards_compat_dt, MACHINE_END -- cgit v1.2.3 From 7cd402b30a701c2b4d38a98281a00fc5e3680b13 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Sun, 1 Sep 2013 20:33:49 -0700 Subject: ARM: shmobile: armadillo: fixup ether pinctrl naming e5c9b4cd665106d9b5397114ea81a53059410b6a ("sh_eth: get R8A7740 support out of #ifdef") exchanged sh-eth driver name to r8a7740-gether, but, eva_pinctrl_map[] didn't follow it. Fixes it. Signed-off-by: Kuninori Morimoto Signed-off-by: Laurent Pinchart Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/board-armadillo800eva.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-shmobile/board-armadillo800eva.c b/arch/arm/mach-shmobile/board-armadillo800eva.c index 5bd1479d3deb..7f8f6076d360 100644 --- a/arch/arm/mach-shmobile/board-armadillo800eva.c +++ b/arch/arm/mach-shmobile/board-armadillo800eva.c @@ -1108,9 +1108,9 @@ static const struct pinctrl_map eva_pinctrl_map[] = { PIN_MAP_MUX_GROUP_DEFAULT("asoc-simple-card.1", "pfc-r8a7740", "fsib_mclk_in", "fsib"), /* GETHER */ - PIN_MAP_MUX_GROUP_DEFAULT("sh-eth", "pfc-r8a7740", + PIN_MAP_MUX_GROUP_DEFAULT("r8a7740-gether", "pfc-r8a7740", "gether_mii", "gether"), - PIN_MAP_MUX_GROUP_DEFAULT("sh-eth", "pfc-r8a7740", + PIN_MAP_MUX_GROUP_DEFAULT("r8a7740-gether", "pfc-r8a7740", "gether_int", "gether"), /* HDMI */ PIN_MAP_MUX_GROUP_DEFAULT("sh-mobile-hdmi", "pfc-r8a7740", -- cgit v1.2.3 From 3786f86b60833f32e3eeb016fcf8c324f8147e00 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 11 Sep 2013 15:51:02 +0200 Subject: ARM: shmobile: Remove #gpio-ranges-cells DT property This property is no longer required by the GPIO binding. Remove it. Signed-off-by: Laurent Pinchart Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7778.dtsi | 1 - arch/arm/boot/dts/r8a7779.dtsi | 1 - arch/arm/boot/dts/r8a7790.dtsi | 1 - 3 files changed, 3 deletions(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/r8a7778.dtsi b/arch/arm/boot/dts/r8a7778.dtsi index 45ac404ab6d8..3577aba82583 100644 --- a/arch/arm/boot/dts/r8a7778.dtsi +++ b/arch/arm/boot/dts/r8a7778.dtsi @@ -96,6 +96,5 @@ pfc: pfc@fffc0000 { compatible = "renesas,pfc-r8a7778"; reg = <0xfffc000 0x118>; - #gpio-range-cells = <3>; }; }; diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi index 23a62447359c..ebbe507fcbfa 100644 --- a/arch/arm/boot/dts/r8a7779.dtsi +++ b/arch/arm/boot/dts/r8a7779.dtsi @@ -188,7 +188,6 @@ pfc: pfc@fffc0000 { compatible = "renesas,pfc-r8a7779"; reg = <0xfffc0000 0x23c>; - #gpio-range-cells = <3>; }; thermal@ffc48000 { diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 885f9f4bf26f..413b4c29e782 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -148,7 +148,6 @@ pfc: pfc@e6060000 { compatible = "renesas,pfc-r8a7790"; reg = <0 0xe6060000 0 0x250>; - #gpio-range-cells = <3>; }; sdhi0: sdhi@ee100000 { -- cgit v1.2.3 From 1f65c13efef69b6dc908e588f91a133641d8475c Mon Sep 17 00:00:00 2001 From: AKASHI Takahiro Date: Tue, 24 Sep 2013 10:00:50 +0100 Subject: arm64: avoid multiple evaluation of ptr in get_user/put_user() get_user() is defined as a function macro in arm64, and trace_get_user() calls it as followed: get_user(ch, ptr++); Since the second parameter occurs twice in the definition, 'ptr++' is unexpectedly evaluated twice and trace_get_user() will generate a bogus string from user-provided one. As a result, some ftrace sysfs operations, like "echo FUNCNAME > set_ftrace_filter," hit this case and eventually fail. This patch fixes the issue both in get_user() and put_user(). Signed-off-by: AKASHI Takahiro [catalin.marinas@arm.com: added __user type annotation and s/optr/__p/] Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/uaccess.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h index edb3d5c73a32..7ecc2b23882e 100644 --- a/arch/arm64/include/asm/uaccess.h +++ b/arch/arm64/include/asm/uaccess.h @@ -166,9 +166,10 @@ do { \ #define get_user(x, ptr) \ ({ \ + __typeof__(*(ptr)) __user *__p = (ptr); \ might_fault(); \ - access_ok(VERIFY_READ, (ptr), sizeof(*(ptr))) ? \ - __get_user((x), (ptr)) : \ + access_ok(VERIFY_READ, __p, sizeof(*__p)) ? \ + __get_user((x), __p) : \ ((x) = 0, -EFAULT); \ }) @@ -227,9 +228,10 @@ do { \ #define put_user(x, ptr) \ ({ \ + __typeof__(*(ptr)) __user *__p = (ptr); \ might_fault(); \ - access_ok(VERIFY_WRITE, (ptr), sizeof(*(ptr))) ? \ - __put_user((x), (ptr)) : \ + access_ok(VERIFY_WRITE, __p, sizeof(*__p)) ? \ + __put_user((x), __p) : \ -EFAULT; \ }) -- cgit v1.2.3 From fc18047c732f6becba92618a397555927687efd3 Mon Sep 17 00:00:00 2001 From: Matthew Leach Date: Wed, 25 Sep 2013 16:33:13 +0100 Subject: arm64: use correct register width when retrieving ASID The ASID is represented as an unsigned int in mm_context_t and we currently use the mmid assembler macro to access this element of the struct. This should be accessed with a register of 32-bit width. If the incorrect register width is used the ASID will be returned in bits[32:63] of the register when running under big-endian. Fix a use of the mmid macro in tlb.S to use a 32-bit access. Signed-off-by: Will Deacon Signed-off-by: Matthew Leach Signed-off-by: Catalin Marinas --- arch/arm64/mm/tlb.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm64/mm/tlb.S b/arch/arm64/mm/tlb.S index 8ae80a18e8ec..19da91e0cd27 100644 --- a/arch/arm64/mm/tlb.S +++ b/arch/arm64/mm/tlb.S @@ -35,7 +35,7 @@ */ ENTRY(__cpu_flush_user_tlb_range) vma_vm_mm x3, x2 // get vma->vm_mm - mmid x3, x3 // get vm_mm->context.id + mmid w3, x3 // get vm_mm->context.id dsb sy lsr x0, x0, #12 // align address lsr x1, x1, #12 -- cgit v1.2.3 From 4dc3231f818baf7415c67ee06c51ace0973ae736 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Wed, 25 Sep 2013 12:11:33 +0200 Subject: ARM: mach-integrator: Add stub for pci_v3_early_init() for !CONFIG_PCI This fixes a compile error where CONFIG_PCI is disabled: LD init/built-in.o arch/arm/mach-integrator/built-in.o: In function `ap_map_io': integrator_cp.c:(.init.text+0x570): undefined reference to `pci_v3_early_init' make[1]: *** [vmlinux] Error 1 make: *** [sub-make] Error 2 Cc: stable@vger.kernel.org Signed-off-by: Joerg Roedel Reviewed-by: Linus Walleij Signed-off-by: Olof Johansson --- arch/arm/mach-integrator/pci_v3.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch') diff --git a/arch/arm/mach-integrator/pci_v3.h b/arch/arm/mach-integrator/pci_v3.h index 755fd29fed4a..06a9e2e7d007 100644 --- a/arch/arm/mach-integrator/pci_v3.h +++ b/arch/arm/mach-integrator/pci_v3.h @@ -1,2 +1,9 @@ /* Simple oneliner include to the PCIv3 early init */ +#ifdef CONFIG_PCI extern int pci_v3_early_init(void); +#else +static inline int pci_v3_early_init(void) +{ + return 0; +} +#endif -- cgit v1.2.3 From 6db83cea1c975b9a102e17def7d2795814e1ae2b Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Fri, 27 Sep 2013 09:04:41 +0100 Subject: arm64: fix possible invalid FPSIMD initialization state If context switching happens during executing fpsimd_flush_thread(), stale value in FPSIMD registers will be saved into current thread's fpsimd_state by fpsimd_thread_switch(). That may cause invalid initialization state for the new process, so disable preemption when executing fpsimd_flush_thread(). Signed-off-by: Jiang Liu Cc: Jiang Liu Signed-off-by: Catalin Marinas --- arch/arm64/kernel/fpsimd.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch') diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index 1f2e4d5a5c0f..bb785d23dbde 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -80,8 +80,10 @@ void fpsimd_thread_switch(struct task_struct *next) void fpsimd_flush_thread(void) { + preempt_disable(); memset(¤t->thread.fpsimd_state, 0, sizeof(struct fpsimd_state)); fpsimd_load_state(¤t->thread.fpsimd_state); + preempt_enable(); } #ifdef CONFIG_KERNEL_MODE_NEON -- cgit v1.2.3 From b924a69067b00d3121debae5a738fb0bcbbbb03c Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Wed, 25 Sep 2013 12:14:08 +0800 Subject: tile: include: asm: use 'long long' instead of 'u64' for atomic64_t and its related functions atomic* value is signed value, and atomic* functions need also process signed value (parameter value, and return value), so use 'long long' instead of 'u64'. After replacement, it will also fix a bug for atomic64_add_negative(): "u64 is never less than 0". The modifications are: in vim, use "1,% s/\/long long/g" command. remove redundant '__aligned(8)'. be sure of 80 (and macro '\') columns limitation after replacement. Signed-off-by: Chen Gang Signed-off-by: Chris Metcalf [re-instated const cast] --- arch/tile/include/asm/atomic.h | 5 +++-- arch/tile/include/asm/atomic_32.h | 27 +++++++++++++++------------ arch/tile/include/asm/cmpxchg.h | 28 +++++++++++++++++----------- arch/tile/lib/atomic_32.c | 8 ++++---- 4 files changed, 39 insertions(+), 29 deletions(-) (limited to 'arch') diff --git a/arch/tile/include/asm/atomic.h b/arch/tile/include/asm/atomic.h index d385eaadece7..709798460763 100644 --- a/arch/tile/include/asm/atomic.h +++ b/arch/tile/include/asm/atomic.h @@ -166,7 +166,7 @@ static inline int atomic_cmpxchg(atomic_t *v, int o, int n) * * Atomically sets @v to @i and returns old @v */ -static inline u64 atomic64_xchg(atomic64_t *v, u64 n) +static inline long long atomic64_xchg(atomic64_t *v, long long n) { return xchg64(&v->counter, n); } @@ -180,7 +180,8 @@ static inline u64 atomic64_xchg(atomic64_t *v, u64 n) * Atomically checks if @v holds @o and replaces it with @n if so. * Returns the old value at @v. */ -static inline u64 atomic64_cmpxchg(atomic64_t *v, u64 o, u64 n) +static inline long long atomic64_cmpxchg(atomic64_t *v, long long o, + long long n) { return cmpxchg64(&v->counter, o, n); } diff --git a/arch/tile/include/asm/atomic_32.h b/arch/tile/include/asm/atomic_32.h index 0d0395b1b152..1ad4a1f7d42b 100644 --- a/arch/tile/include/asm/atomic_32.h +++ b/arch/tile/include/asm/atomic_32.h @@ -80,7 +80,7 @@ static inline void atomic_set(atomic_t *v, int n) /* A 64bit atomic type */ typedef struct { - u64 __aligned(8) counter; + long long counter; } atomic64_t; #define ATOMIC64_INIT(val) { (val) } @@ -91,14 +91,14 @@ typedef struct { * * Atomically reads the value of @v. */ -static inline u64 atomic64_read(const atomic64_t *v) +static inline long long atomic64_read(const atomic64_t *v) { /* * Requires an atomic op to read both 32-bit parts consistently. * Casting away const is safe since the atomic support routines * do not write to memory if the value has not been modified. */ - return _atomic64_xchg_add((u64 *)&v->counter, 0); + return _atomic64_xchg_add((long long *)&v->counter, 0); } /** @@ -108,7 +108,7 @@ static inline u64 atomic64_read(const atomic64_t *v) * * Atomically adds @i to @v. */ -static inline void atomic64_add(u64 i, atomic64_t *v) +static inline void atomic64_add(long long i, atomic64_t *v) { _atomic64_xchg_add(&v->counter, i); } @@ -120,7 +120,7 @@ static inline void atomic64_add(u64 i, atomic64_t *v) * * Atomically adds @i to @v and returns @i + @v */ -static inline u64 atomic64_add_return(u64 i, atomic64_t *v) +static inline long long atomic64_add_return(long long i, atomic64_t *v) { smp_mb(); /* barrier for proper semantics */ return _atomic64_xchg_add(&v->counter, i) + i; @@ -135,7 +135,8 @@ static inline u64 atomic64_add_return(u64 i, atomic64_t *v) * Atomically adds @a to @v, so long as @v was not already @u. * Returns non-zero if @v was not @u, and zero otherwise. */ -static inline u64 atomic64_add_unless(atomic64_t *v, u64 a, u64 u) +static inline long long atomic64_add_unless(atomic64_t *v, long long a, + long long u) { smp_mb(); /* barrier for proper semantics */ return _atomic64_xchg_add_unless(&v->counter, a, u) != u; @@ -151,7 +152,7 @@ static inline u64 atomic64_add_unless(atomic64_t *v, u64 a, u64 u) * atomic64_set() can't be just a raw store, since it would be lost if it * fell between the load and store of one of the other atomic ops. */ -static inline void atomic64_set(atomic64_t *v, u64 n) +static inline void atomic64_set(atomic64_t *v, long long n) { _atomic64_xchg(&v->counter, n); } @@ -236,11 +237,13 @@ extern struct __get_user __atomic_xchg_add_unless(volatile int *p, extern struct __get_user __atomic_or(volatile int *p, int *lock, int n); extern struct __get_user __atomic_andn(volatile int *p, int *lock, int n); extern struct __get_user __atomic_xor(volatile int *p, int *lock, int n); -extern u64 __atomic64_cmpxchg(volatile u64 *p, int *lock, u64 o, u64 n); -extern u64 __atomic64_xchg(volatile u64 *p, int *lock, u64 n); -extern u64 __atomic64_xchg_add(volatile u64 *p, int *lock, u64 n); -extern u64 __atomic64_xchg_add_unless(volatile u64 *p, - int *lock, u64 o, u64 n); +extern long long __atomic64_cmpxchg(volatile long long *p, int *lock, + long long o, long long n); +extern long long __atomic64_xchg(volatile long long *p, int *lock, long long n); +extern long long __atomic64_xchg_add(volatile long long *p, int *lock, + long long n); +extern long long __atomic64_xchg_add_unless(volatile long long *p, + int *lock, long long o, long long n); /* Return failure from the atomic wrappers. */ struct __get_user __atomic_bad_address(int __user *addr); diff --git a/arch/tile/include/asm/cmpxchg.h b/arch/tile/include/asm/cmpxchg.h index 4001d5eab4bb..0ccda3c425be 100644 --- a/arch/tile/include/asm/cmpxchg.h +++ b/arch/tile/include/asm/cmpxchg.h @@ -35,10 +35,10 @@ int _atomic_xchg(int *ptr, int n); int _atomic_xchg_add(int *v, int i); int _atomic_xchg_add_unless(int *v, int a, int u); int _atomic_cmpxchg(int *ptr, int o, int n); -u64 _atomic64_xchg(u64 *v, u64 n); -u64 _atomic64_xchg_add(u64 *v, u64 i); -u64 _atomic64_xchg_add_unless(u64 *v, u64 a, u64 u); -u64 _atomic64_cmpxchg(u64 *v, u64 o, u64 n); +long long _atomic64_xchg(long long *v, long long n); +long long _atomic64_xchg_add(long long *v, long long i); +long long _atomic64_xchg_add_unless(long long *v, long long a, long long u); +long long _atomic64_cmpxchg(long long *v, long long o, long long n); #define xchg(ptr, n) \ ({ \ @@ -53,7 +53,8 @@ u64 _atomic64_cmpxchg(u64 *v, u64 o, u64 n); if (sizeof(*(ptr)) != 4) \ __cmpxchg_called_with_bad_pointer(); \ smp_mb(); \ - (typeof(*(ptr)))_atomic_cmpxchg((int *)ptr, (int)o, (int)n); \ + (typeof(*(ptr)))_atomic_cmpxchg((int *)ptr, (int)o, \ + (int)n); \ }) #define xchg64(ptr, n) \ @@ -61,7 +62,8 @@ u64 _atomic64_cmpxchg(u64 *v, u64 o, u64 n); if (sizeof(*(ptr)) != 8) \ __xchg_called_with_bad_pointer(); \ smp_mb(); \ - (typeof(*(ptr)))_atomic64_xchg((u64 *)(ptr), (u64)(n)); \ + (typeof(*(ptr)))_atomic64_xchg((long long *)(ptr), \ + (long long)(n)); \ }) #define cmpxchg64(ptr, o, n) \ @@ -69,7 +71,8 @@ u64 _atomic64_cmpxchg(u64 *v, u64 o, u64 n); if (sizeof(*(ptr)) != 8) \ __cmpxchg_called_with_bad_pointer(); \ smp_mb(); \ - (typeof(*(ptr)))_atomic64_cmpxchg((u64 *)ptr, (u64)o, (u64)n); \ + (typeof(*(ptr)))_atomic64_cmpxchg((long long *)ptr, \ + (long long)o, (long long)n); \ }) #else @@ -81,10 +84,11 @@ u64 _atomic64_cmpxchg(u64 *v, u64 o, u64 n); switch (sizeof(*(ptr))) { \ case 4: \ __x = (typeof(__x))(unsigned long) \ - __insn_exch4((ptr), (u32)(unsigned long)(n)); \ + __insn_exch4((ptr), \ + (u32)(unsigned long)(n)); \ break; \ case 8: \ - __x = (typeof(__x)) \ + __x = (typeof(__x)) \ __insn_exch((ptr), (unsigned long)(n)); \ break; \ default: \ @@ -103,10 +107,12 @@ u64 _atomic64_cmpxchg(u64 *v, u64 o, u64 n); switch (sizeof(*(ptr))) { \ case 4: \ __x = (typeof(__x))(unsigned long) \ - __insn_cmpexch4((ptr), (u32)(unsigned long)(n)); \ + __insn_cmpexch4((ptr), \ + (u32)(unsigned long)(n)); \ break; \ case 8: \ - __x = (typeof(__x))__insn_cmpexch((ptr), (u64)(n)); \ + __x = (typeof(__x))__insn_cmpexch((ptr), \ + (long long)(n)); \ break; \ default: \ __cmpxchg_called_with_bad_pointer(); \ diff --git a/arch/tile/lib/atomic_32.c b/arch/tile/lib/atomic_32.c index 759efa337be8..c89b211fd9e7 100644 --- a/arch/tile/lib/atomic_32.c +++ b/arch/tile/lib/atomic_32.c @@ -107,19 +107,19 @@ unsigned long _atomic_xor(volatile unsigned long *p, unsigned long mask) EXPORT_SYMBOL(_atomic_xor); -u64 _atomic64_xchg(u64 *v, u64 n) +long long _atomic64_xchg(long long *v, long long n) { return __atomic64_xchg(v, __atomic_setup(v), n); } EXPORT_SYMBOL(_atomic64_xchg); -u64 _atomic64_xchg_add(u64 *v, u64 i) +long long _atomic64_xchg_add(long long *v, long long i) { return __atomic64_xchg_add(v, __atomic_setup(v), i); } EXPORT_SYMBOL(_atomic64_xchg_add); -u64 _atomic64_xchg_add_unless(u64 *v, u64 a, u64 u) +long long _atomic64_xchg_add_unless(long long *v, long long a, long long u) { /* * Note: argument order is switched here since it is easier @@ -130,7 +130,7 @@ u64 _atomic64_xchg_add_unless(u64 *v, u64 a, u64 u) } EXPORT_SYMBOL(_atomic64_xchg_add_unless); -u64 _atomic64_cmpxchg(u64 *v, u64 o, u64 n) +long long _atomic64_cmpxchg(long long *v, long long o, long long n) { return __atomic64_cmpxchg(v, __atomic_setup(v), o, n); } -- cgit v1.2.3 From dd386e03d9753889dc3ea3eed91ad3729df08819 Mon Sep 17 00:00:00 2001 From: Henrik Austad Date: Wed, 25 Sep 2013 16:16:40 +0200 Subject: tile: change lock initalization in hardwall hardwall used __SPIN_LOCK_INITIALIZER directly instead of the preferred __SPIN_LOCK_UNLOCKED. This also has the benefit that it will compile when applying the preempt-rt patch series. Signed-off-by: Henrik Austad Signed-off-by: Chris Metcalf --- arch/tile/kernel/hardwall.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/tile/kernel/hardwall.c b/arch/tile/kernel/hardwall.c index df27a1fd94a3..531f4c365351 100644 --- a/arch/tile/kernel/hardwall.c +++ b/arch/tile/kernel/hardwall.c @@ -66,7 +66,7 @@ static struct hardwall_type hardwall_types[] = { 0, "udn", LIST_HEAD_INIT(hardwall_types[HARDWALL_UDN].list), - __SPIN_LOCK_INITIALIZER(hardwall_types[HARDWALL_UDN].lock), + __SPIN_LOCK_UNLOCKED(hardwall_types[HARDWALL_UDN].lock), NULL }, #ifndef __tilepro__ @@ -77,7 +77,7 @@ static struct hardwall_type hardwall_types[] = { 1, /* disabled pending hypervisor support */ "idn", LIST_HEAD_INIT(hardwall_types[HARDWALL_IDN].list), - __SPIN_LOCK_INITIALIZER(hardwall_types[HARDWALL_IDN].lock), + __SPIN_LOCK_UNLOCKED(hardwall_types[HARDWALL_IDN].lock), NULL }, { /* access to user-space IPI */ @@ -87,7 +87,7 @@ static struct hardwall_type hardwall_types[] = { 0, "ipi", LIST_HEAD_INIT(hardwall_types[HARDWALL_IPI].list), - __SPIN_LOCK_INITIALIZER(hardwall_types[HARDWALL_IPI].lock), + __SPIN_LOCK_UNLOCKED(hardwall_types[HARDWALL_IPI].lock), NULL }, #endif -- cgit v1.2.3 From 3f725c5b924e14eb00c58892d21d92100121e5ce Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Thu, 26 Sep 2013 13:22:40 -0400 Subject: tile: ensure interrupts disabled for preempt_schedule_irq() When coming from a page fault (for example), interrupts might be enabled as we enter the code to return from interrupt. Cc: stable@vger.kernel.org Signed-off-by: Chris Metcalf --- arch/tile/kernel/intvec_32.S | 3 +++ arch/tile/kernel/intvec_64.S | 3 +++ 2 files changed, 6 insertions(+) (limited to 'arch') diff --git a/arch/tile/kernel/intvec_32.S b/arch/tile/kernel/intvec_32.S index 088d5c141e68..2cbe6d5dd6b0 100644 --- a/arch/tile/kernel/intvec_32.S +++ b/arch/tile/kernel/intvec_32.S @@ -815,6 +815,9 @@ STD_ENTRY(interrupt_return) } bzt r28, 1f bnz r29, 1f + /* Disable interrupts explicitly for preemption. */ + IRQ_DISABLE(r20,r21) + TRACE_IRQS_OFF jal preempt_schedule_irq FEEDBACK_REENTER(interrupt_return) 1: diff --git a/arch/tile/kernel/intvec_64.S b/arch/tile/kernel/intvec_64.S index ec755d3f3734..b8fc497f2437 100644 --- a/arch/tile/kernel/intvec_64.S +++ b/arch/tile/kernel/intvec_64.S @@ -841,6 +841,9 @@ STD_ENTRY(interrupt_return) } beqzt r28, 1f bnez r29, 1f + /* Disable interrupts explicitly for preemption. */ + IRQ_DISABLE(r20,r21) + TRACE_IRQS_OFF jal preempt_schedule_irq FEEDBACK_REENTER(interrupt_return) 1: -- cgit v1.2.3 From 742343551165f314c740a41b070d0fc7fbe202f7 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 2 Sep 2013 10:22:21 +0200 Subject: s390/kprobes: add exrl to list of prohibited opcodes "execute relative long" may have all sorts of side effects dependend on the instructions it executes. Therefore prohibit setting a kprobe on exrl just like we do for the regular execute instruction. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/kprobes.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c index 0ce9fb245034..d86e64eddb42 100644 --- a/arch/s390/kernel/kprobes.c +++ b/arch/s390/kernel/kprobes.c @@ -67,6 +67,11 @@ static int __kprobes is_prohibited_opcode(kprobe_opcode_t *insn) case 0xac: /* stnsm */ case 0xad: /* stosm */ return -EINVAL; + case 0xc6: + switch (insn[0] & 0x0f) { + case 0x00: /* exrl */ + return -EINVAL; + } } switch (insn[0]) { case 0x0101: /* pr */ @@ -180,7 +185,6 @@ static int __kprobes is_insn_relative_long(kprobe_opcode_t *insn) break; case 0xc6: switch (insn[0] & 0x0f) { - case 0x00: /* exrl */ case 0x02: /* pfdrl */ case 0x04: /* cghrl */ case 0x05: /* chrl */ -- cgit v1.2.3 From 4d3b0664a0d0c0dc7501cfbd067f74226aeca510 Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Fri, 27 Sep 2013 15:41:43 +0200 Subject: s390: Allow vmalloc target buffers for copy_from_oldmem() Currently copy_from_oldmem() is not able to copy to virtual memory. When using kexec pre-allocated ELF header, copy_from_oldmem() is used to copy the ELF notes information to vmalloc buffers. So fix this and use the new function copy_from_realmem() that allows copying also to vmalloc memory. Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/crash_dump.c | 42 ++++++++++++++++++++---------------------- 1 file changed, 20 insertions(+), 22 deletions(-) (limited to 'arch') diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c index c84f33d51f7b..7dd21720e5b0 100644 --- a/arch/s390/kernel/crash_dump.c +++ b/arch/s390/kernel/crash_dump.c @@ -40,28 +40,26 @@ static inline void *load_real_addr(void *addr) } /* - * Copy up to one page to vmalloc or real memory + * Copy real to virtual or real memory */ -static ssize_t copy_page_real(void *buf, void *src, size_t csize) +static int copy_from_realmem(void *dest, void *src, size_t count) { - size_t size; + unsigned long size; + int rc; - if (is_vmalloc_addr(buf)) { - BUG_ON(csize >= PAGE_SIZE); - /* If buf is not page aligned, copy first part */ - size = min(roundup(__pa(buf), PAGE_SIZE) - __pa(buf), csize); - if (size) { - if (memcpy_real(load_real_addr(buf), src, size)) - return -EFAULT; - buf += size; - src += size; - } - /* Copy second part */ - size = csize - size; - return (size) ? memcpy_real(load_real_addr(buf), src, size) : 0; - } else { - return memcpy_real(buf, src, csize); - } + if (!count) + return 0; + if (!is_vmalloc_or_module_addr(dest)) + return memcpy_real(dest, src, count); + do { + size = min(count, PAGE_SIZE - (__pa(dest) & ~PAGE_MASK)); + if (memcpy_real(load_real_addr(dest), src, size)) + return -EFAULT; + count -= size; + dest += size; + src += size; + } while (count); + return 0; } /* @@ -114,7 +112,7 @@ static ssize_t copy_oldmem_page_kdump(char *buf, size_t csize, rc = copy_to_user_real((void __force __user *) buf, (void *) src, csize); else - rc = copy_page_real(buf, (void *) src, csize); + rc = copy_from_realmem(buf, (void *) src, csize); return (rc == 0) ? rc : csize; } @@ -210,7 +208,7 @@ int copy_from_oldmem(void *dest, void *src, size_t count) if (OLDMEM_BASE) { if ((unsigned long) src < OLDMEM_SIZE) { copied = min(count, OLDMEM_SIZE - (unsigned long) src); - rc = memcpy_real(dest, src + OLDMEM_BASE, copied); + rc = copy_from_realmem(dest, src + OLDMEM_BASE, copied); if (rc) return rc; } @@ -223,7 +221,7 @@ int copy_from_oldmem(void *dest, void *src, size_t count) return rc; } } - return memcpy_real(dest + copied, src + copied, count - copied); + return copy_from_realmem(dest + copied, src + copied, count - copied); } /* -- cgit v1.2.3 From dbbfe487e5f3fc00c9fe5207d63309859704d12f Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Fri, 27 Sep 2013 15:24:38 +0200 Subject: s390: fix system call restart after inferior call Git commit 616498813b11ffef "s390: system call path micro optimization" introduced a regression in regard to system call restarting and inferior function calls via the ptrace interface. The pointer to the system call table needs to be loaded in sysc_sigpending if do_signal returns with TIF_SYSCALl set after it restored a system call context. Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/entry.S | 1 + arch/s390/kernel/entry64.S | 1 + 2 files changed, 2 insertions(+) (limited to 'arch') diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index cc30d1fb000c..0dc2b6d0a1ec 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -266,6 +266,7 @@ sysc_sigpending: tm __TI_flags+3(%r12),_TIF_SYSCALL jno sysc_return lm %r2,%r7,__PT_R2(%r11) # load svc arguments + l %r10,__TI_sysc_table(%r12) # 31 bit system call table xr %r8,%r8 # svc 0 returns -ENOSYS clc __PT_INT_CODE+2(2,%r11),BASED(.Lnr_syscalls+2) jnl sysc_nr_ok # invalid svc number -> do svc 0 diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 2b2188b97c6a..e5b43c97a834 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -297,6 +297,7 @@ sysc_sigpending: tm __TI_flags+7(%r12),_TIF_SYSCALL jno sysc_return lmg %r2,%r7,__PT_R2(%r11) # load svc arguments + lg %r10,__TI_sysc_table(%r12) # address of system call table lghi %r8,0 # svc 0 returns -ENOSYS llgh %r1,__PT_INT_CODE+2(%r11) # load new svc number cghi %r1,NR_syscalls -- cgit v1.2.3 From 08ebb250ef9473112273f780a777b4624a38856f Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 30 Sep 2013 15:09:20 +0200 Subject: MIPS: Alchemy: MTX-1: fix incorrect placement of __initdata tag __initdata tag should be placed between the variable name and equal sign for the variable to be placed in the intended .init.data section. Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Kyungmin Park Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/5934/ Signed-off-by: Ralf Baechle --- arch/mips/alchemy/board-mtx1.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/mips/alchemy/board-mtx1.c b/arch/mips/alchemy/board-mtx1.c index 4a9baa9f6330..9969dbab19e3 100644 --- a/arch/mips/alchemy/board-mtx1.c +++ b/arch/mips/alchemy/board-mtx1.c @@ -276,7 +276,7 @@ static struct platform_device mtx1_pci_host = { .resource = alchemy_pci_host_res, }; -static struct __initdata platform_device * mtx1_devs[] = { +static struct platform_device *mtx1_devs[] __initdata = { &mtx1_pci_host, &mtx1_gpio_leds, &mtx1_wdt, -- cgit v1.2.3 From aa06a5adb9bbebd0d694008b74233d8db4ebfa21 Mon Sep 17 00:00:00 2001 From: Arnaud Ebalard Date: Sun, 29 Sep 2013 20:36:41 +0200 Subject: ARM: mvebu: fix ReadyNAS 102 Power button GPIO to make it active high NETGEAR ReadyNAS 102 Power button definition in .dts file flags associated GPIO active low instead of active high. This results in reversed events reported by input subsystem (0 returned when the button is pressed, 1 when released). This patch makes associated GPIO active high to recover correct behaviour. Signed-off-by: Arnaud Ebalard Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-370-netgear-rn102.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/armada-370-netgear-rn102.dts b/arch/arm/boot/dts/armada-370-netgear-rn102.dts index 05e4485a8225..396949d809ac 100644 --- a/arch/arm/boot/dts/armada-370-netgear-rn102.dts +++ b/arch/arm/boot/dts/armada-370-netgear-rn102.dts @@ -160,7 +160,7 @@ button@1 { label = "Power Button"; linux,code = <116>; /* KEY_POWER */ - gpios = <&gpio1 30 1>; + gpios = <&gpio1 30 0>; }; button@2 { -- cgit v1.2.3 From 2832cf2558095854bcefe5a4e3690f4921f9f3a6 Mon Sep 17 00:00:00 2001 From: Arnaud Ebalard Date: Sun, 29 Sep 2013 23:41:43 +0200 Subject: ARM: mvebu: Add DT entry for ReadyNAS 102 to use gpio-poweroff driver Without that fix, at the end of the shutdown process, the board is still powered (led glowing, fan running, ...). Signed-off-by: Arnaud Ebalard Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-370-netgear-rn102.dts | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/armada-370-netgear-rn102.dts b/arch/arm/boot/dts/armada-370-netgear-rn102.dts index 396949d809ac..40e73be31720 100644 --- a/arch/arm/boot/dts/armada-370-netgear-rn102.dts +++ b/arch/arm/boot/dts/armada-370-netgear-rn102.dts @@ -57,6 +57,11 @@ marvell,pins = "mpp56"; marvell,function = "gpio"; }; + + poweroff: poweroff { + marvell,pins = "mpp8"; + marvell,function = "gpio"; + }; }; mdio { @@ -176,4 +181,11 @@ }; }; + gpio_poweroff { + compatible = "gpio-poweroff"; + pinctrl-0 = <&poweroff>; + pinctrl-names = "default"; + gpios = <&gpio0 8 1>; + }; + }; -- cgit v1.2.3 From f862eefec0b68e099a9fa58d3761ffb10bad97e1 Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Thu, 26 Sep 2013 13:24:53 -0400 Subject: tile: use a more conservative __my_cpu_offset in CONFIG_PREEMPT It turns out the kernel relies on barrier() to force a reload of the percpu offset value. Since we can't easily modify the definition of barrier() to include "tp" as an output register, we instead provide a definition of __my_cpu_offset as extended assembly that includes a fake stack read to hazard against barrier(), forcing gcc to know that it must reread "tp" and recompute anything based on "tp" after a barrier. This fixes observed hangs in the slub allocator when we are looping on a percpu cmpxchg_double. A similar fix for ARMv7 was made in June in change 509eb76ebf97. Cc: stable@vger.kernel.org Signed-off-by: Chris Metcalf --- arch/tile/include/asm/percpu.h | 34 +++++++++++++++++++++++++++++++--- 1 file changed, 31 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/tile/include/asm/percpu.h b/arch/tile/include/asm/percpu.h index 63294f5a8efb..4f7ae39fa202 100644 --- a/arch/tile/include/asm/percpu.h +++ b/arch/tile/include/asm/percpu.h @@ -15,9 +15,37 @@ #ifndef _ASM_TILE_PERCPU_H #define _ASM_TILE_PERCPU_H -register unsigned long __my_cpu_offset __asm__("tp"); -#define __my_cpu_offset __my_cpu_offset -#define set_my_cpu_offset(tp) (__my_cpu_offset = (tp)) +register unsigned long my_cpu_offset_reg asm("tp"); + +#ifdef CONFIG_PREEMPT +/* + * For full preemption, we can't just use the register variable + * directly, since we need barrier() to hazard against it, causing the + * compiler to reload anything computed from a previous "tp" value. + * But we also don't want to use volatile asm, since we'd like the + * compiler to be able to cache the value across multiple percpu reads. + * So we use a fake stack read as a hazard against barrier(). + * The 'U' constraint is like 'm' but disallows postincrement. + */ +static inline unsigned long __my_cpu_offset(void) +{ + unsigned long tp; + register unsigned long *sp asm("sp"); + asm("move %0, tp" : "=r" (tp) : "U" (*sp)); + return tp; +} +#define __my_cpu_offset __my_cpu_offset() +#else +/* + * We don't need to hazard against barrier() since "tp" doesn't ever + * change with PREEMPT_NONE, and with PREEMPT_VOLUNTARY it only + * changes at function call points, at which we are already re-reading + * the value of "tp" due to "my_cpu_offset_reg" being a global variable. + */ +#define __my_cpu_offset my_cpu_offset_reg +#endif + +#define set_my_cpu_offset(tp) (my_cpu_offset_reg = (tp)) #include -- cgit v1.2.3 From 0cc96a745059e8daf1d7d6a26672f0ad9056e989 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Fri, 27 Sep 2013 11:26:30 +0300 Subject: arch: tile: re-use kbasename() helper kbasename() returns the filename part of a pathname. Signed-off-by: Andy Shevchenko --- arch/tile/kernel/stack.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) (limited to 'arch') diff --git a/arch/tile/kernel/stack.c b/arch/tile/kernel/stack.c index 362284af3afd..c93977a62116 100644 --- a/arch/tile/kernel/stack.c +++ b/arch/tile/kernel/stack.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -332,21 +333,18 @@ static void describe_addr(struct KBacktraceIterator *kbt, } if (vma->vm_file) { - char *s; p = d_path(&vma->vm_file->f_path, buf, bufsize); if (IS_ERR(p)) p = "?"; - s = strrchr(p, '/'); - if (s) - p = s+1; + name = kbasename(p); } else { - p = "anon"; + name = "anon"; } /* Generate a string description of the vma info. */ - namelen = strlen(p); + namelen = strlen(name); remaining = (bufsize - 1) - namelen; - memmove(buf, p, namelen); + memmove(buf, name, namelen); snprintf(buf + namelen, remaining, "[%lx+%lx] ", vma->vm_start, vma->vm_end - vma->vm_start); } -- cgit v1.2.3 From ade37198937a52bc3f59c40ffb14cb6688b273b7 Mon Sep 17 00:00:00 2001 From: Ramkumar Ramachandra Date: Sat, 28 Sep 2013 12:19:55 +0100 Subject: arm64: include EXT4 in defconfig Most readily available root filesystems are formatted as EXT4 these days. For example, see the raring rootfs that the Debian folk is preparing [1]. [1]: http://people.debian.org/~wookey/bootstrap/rootfs/ Cc: Will Deacon Cc: Andreas Schwab Signed-off-by: Ramkumar Ramachandra Signed-off-by: Catalin Marinas --- arch/arm64/configs/defconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 5b3e83217b03..798bcbb31fa7 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -72,6 +72,7 @@ CONFIG_LOGO=y # CONFIG_IOMMU_SUPPORT is not set CONFIG_EXT2_FS=y CONFIG_EXT3_FS=y +CONFIG_EXT4_FS=y # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set # CONFIG_EXT3_FS_XATTR is not set CONFIG_FUSE_FS=y -- cgit v1.2.3 From 4eb507b874035873dafdb381e61935fed7a8ad85 Mon Sep 17 00:00:00 2001 From: Ramkumar Ramachandra Date: Sat, 28 Sep 2013 12:19:56 +0100 Subject: arm64: include VIRTIO_{MMIO,BLK} in defconfig Currently, development on arm64 is aided by a Foundation_v8 emulator distributed by ARM [1]. To run their kernels, users will execute: $ ./Foundation_v8 --image linux-system.axf --block-device raring-rootfs To mount the raring-rootfs filesystem, the kernel parameter should typically include: root=/dev/vda For this device to be present, the kernel must be compiled with VIRTIO_{MMIO,BLK}. To make this work out-of-the-box, make it part of the default configuration. [1]: https://silver.arm.com/browse/FM00A Cc: Will Deacon Cc: Andreas Schwab Signed-off-by: Ramkumar Ramachandra Signed-off-by: Catalin Marinas --- arch/arm64/configs/defconfig | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 798bcbb31fa7..31c81e9b792e 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -42,7 +42,7 @@ CONFIG_IP_PNP_BOOTP=y # CONFIG_WIRELESS is not set CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y -# CONFIG_BLK_DEV is not set +CONFIG_BLK_DEV=y CONFIG_SCSI=y # CONFIG_SCSI_PROC_FS is not set CONFIG_BLK_DEV_SD=y @@ -91,3 +91,5 @@ CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_INFO=y # CONFIG_FTRACE is not set CONFIG_ATOMIC64_SELFTEST=y +CONFIG_VIRTIO_MMIO=y +CONFIG_VIRTIO_BLK=y -- cgit v1.2.3 From a13699784157624244246996771400ebef91dc4a Mon Sep 17 00:00:00 2001 From: Qipan Li Date: Mon, 23 Sep 2013 23:15:08 +0800 Subject: ARM: dts: sirf: fix fifosize, clks, dma channels for UART sirf uart and usp-based uart driver with full dma support has hit 3.12, here we fix the fifosize, dma channels for some HW prop. Signed-off-by: Qipan Li Signed-off-by: Barry Song Signed-off-by: Olof Johansson --- arch/arm/boot/dts/atlas6.dtsi | 10 ++++++++++ arch/arm/boot/dts/prima2.dtsi | 22 +++++++++++++++++++--- 2 files changed, 29 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/atlas6.dtsi b/arch/arm/boot/dts/atlas6.dtsi index 8678e0c11119..3dccc3ab33a3 100644 --- a/arch/arm/boot/dts/atlas6.dtsi +++ b/arch/arm/boot/dts/atlas6.dtsi @@ -181,6 +181,8 @@ interrupts = <17>; fifosize = <128>; clocks = <&clks 13>; + sirf,uart-dma-rx-channel = <21>; + sirf,uart-dma-tx-channel = <2>; }; uart1: uart@b0060000 { @@ -199,6 +201,8 @@ interrupts = <19>; fifosize = <128>; clocks = <&clks 15>; + sirf,uart-dma-rx-channel = <6>; + sirf,uart-dma-tx-channel = <7>; }; usp0: usp@b0080000 { @@ -206,7 +210,10 @@ compatible = "sirf,prima2-usp"; reg = <0xb0080000 0x10000>; interrupts = <20>; + fifosize = <128>; clocks = <&clks 28>; + sirf,usp-dma-rx-channel = <17>; + sirf,usp-dma-tx-channel = <18>; }; usp1: usp@b0090000 { @@ -214,7 +221,10 @@ compatible = "sirf,prima2-usp"; reg = <0xb0090000 0x10000>; interrupts = <21>; + fifosize = <128>; clocks = <&clks 29>; + sirf,usp-dma-rx-channel = <14>; + sirf,usp-dma-tx-channel = <15>; }; dmac0: dma-controller@b00b0000 { diff --git a/arch/arm/boot/dts/prima2.dtsi b/arch/arm/boot/dts/prima2.dtsi index bbeb623fc2c6..c52faea063a2 100644 --- a/arch/arm/boot/dts/prima2.dtsi +++ b/arch/arm/boot/dts/prima2.dtsi @@ -196,25 +196,32 @@ uart0: uart@b0050000 { cell-index = <0>; compatible = "sirf,prima2-uart"; - reg = <0xb0050000 0x10000>; + reg = <0xb0050000 0x1000>; interrupts = <17>; + fifosize = <128>; clocks = <&clks 13>; + sirf,uart-dma-rx-channel = <21>; + sirf,uart-dma-tx-channel = <2>; }; uart1: uart@b0060000 { cell-index = <1>; compatible = "sirf,prima2-uart"; - reg = <0xb0060000 0x10000>; + reg = <0xb0060000 0x1000>; interrupts = <18>; + fifosize = <32>; clocks = <&clks 14>; }; uart2: uart@b0070000 { cell-index = <2>; compatible = "sirf,prima2-uart"; - reg = <0xb0070000 0x10000>; + reg = <0xb0070000 0x1000>; interrupts = <19>; + fifosize = <128>; clocks = <&clks 15>; + sirf,uart-dma-rx-channel = <6>; + sirf,uart-dma-tx-channel = <7>; }; usp0: usp@b0080000 { @@ -222,7 +229,10 @@ compatible = "sirf,prima2-usp"; reg = <0xb0080000 0x10000>; interrupts = <20>; + fifosize = <128>; clocks = <&clks 28>; + sirf,usp-dma-rx-channel = <17>; + sirf,usp-dma-tx-channel = <18>; }; usp1: usp@b0090000 { @@ -230,7 +240,10 @@ compatible = "sirf,prima2-usp"; reg = <0xb0090000 0x10000>; interrupts = <21>; + fifosize = <128>; clocks = <&clks 29>; + sirf,usp-dma-rx-channel = <14>; + sirf,usp-dma-tx-channel = <15>; }; usp2: usp@b00a0000 { @@ -238,7 +251,10 @@ compatible = "sirf,prima2-usp"; reg = <0xb00a0000 0x10000>; interrupts = <22>; + fifosize = <128>; clocks = <&clks 30>; + sirf,usp-dma-rx-channel = <10>; + sirf,usp-dma-tx-channel = <11>; }; dmac0: dma-controller@b00b0000 { -- cgit v1.2.3 From 3349a4b9019b57876b25c694025d96f519b795bc Mon Sep 17 00:00:00 2001 From: Barry Song Date: Mon, 23 Sep 2013 23:42:02 +0800 Subject: ARM: dts: makefile: build atlas6-evb.dtb for ARCH_ATLAS6 Makefile missed to include atlas6-evb.dtb for ARCH_ATLAS6. Signed-off-by: Barry Song Signed-off-by: Olof Johansson --- arch/arm/boot/dts/Makefile | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index e95af3f5433b..802720e3e8fd 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -41,6 +41,8 @@ dtb-$(CONFIG_ARCH_AT91) += sama5d33ek.dtb dtb-$(CONFIG_ARCH_AT91) += sama5d34ek.dtb dtb-$(CONFIG_ARCH_AT91) += sama5d35ek.dtb +dtb-$(CONFIG_ARCH_ATLAS6) += atlas6-evb.dtb + dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb dtb-$(CONFIG_ARCH_BCM) += bcm11351-brt.dtb \ bcm28155-ap.dtb -- cgit v1.2.3 From 9e85b9d1006738a45123ea3fe92ad74e5622ffbc Mon Sep 17 00:00:00 2001 From: Barry Song Date: Tue, 24 Sep 2013 00:04:18 +0800 Subject: ARM: dts: sirf: fix the ranges of peri-iobrg of prima2 we lost an address range <0x56000000 0x56000000 0x1b00000> for peri-iobg of prima2. Signed-off-by: Barry Song Signed-off-by: Olof Johansson --- arch/arm/boot/dts/prima2.dtsi | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/prima2.dtsi b/arch/arm/boot/dts/prima2.dtsi index c52faea063a2..a88eda93bccb 100644 --- a/arch/arm/boot/dts/prima2.dtsi +++ b/arch/arm/boot/dts/prima2.dtsi @@ -171,7 +171,8 @@ compatible = "simple-bus"; #address-cells = <1>; #size-cells = <1>; - ranges = <0xb0000000 0xb0000000 0x180000>; + ranges = <0xb0000000 0xb0000000 0x180000>, + <0x56000000 0x56000000 0x1b00000>; timer@b0020000 { compatible = "sirf,prima2-tick"; -- cgit v1.2.3 From 262bcc1d6f8a1b0077eaca00d0834c03573f1b92 Mon Sep 17 00:00:00 2001 From: Renwei Wu Date: Mon, 23 Sep 2013 23:57:11 +0800 Subject: ARM: dts: sirf: fix interrupt and dma prop of VIP for prima2 and atlas6 the current dts is lacking interrupt and dma prop for video input processor of prima2 and atlas6, this patch fixes it. Signed-off-by: Renwei Wu Signed-off-by: Barry Song Signed-off-by: Olof Johansson --- arch/arm/boot/dts/atlas6.dtsi | 2 ++ arch/arm/boot/dts/prima2.dtsi | 2 ++ 2 files changed, 4 insertions(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/atlas6.dtsi b/arch/arm/boot/dts/atlas6.dtsi index 3dccc3ab33a3..6db4f81d4795 100644 --- a/arch/arm/boot/dts/atlas6.dtsi +++ b/arch/arm/boot/dts/atlas6.dtsi @@ -247,6 +247,8 @@ compatible = "sirf,prima2-vip"; reg = <0xb00C0000 0x10000>; clocks = <&clks 31>; + interrupts = <14>; + sirf,vip-dma-rx-channel = <16>; }; spi0: spi@b00d0000 { diff --git a/arch/arm/boot/dts/prima2.dtsi b/arch/arm/boot/dts/prima2.dtsi index a88eda93bccb..27ed9f5144bc 100644 --- a/arch/arm/boot/dts/prima2.dtsi +++ b/arch/arm/boot/dts/prima2.dtsi @@ -278,6 +278,8 @@ compatible = "sirf,prima2-vip"; reg = <0xb00C0000 0x10000>; clocks = <&clks 31>; + interrupts = <14>; + sirf,vip-dma-rx-channel = <16>; }; spi0: spi@b00d0000 { -- cgit v1.2.3 From 64270d82d4bf7fb8e5347c41ea7d0477aa551391 Mon Sep 17 00:00:00 2001 From: Lorenzo Pieralisi Date: Fri, 27 Sep 2013 16:54:42 +0100 Subject: ARM: vexpress: tc2: fix hotplug/idle/kexec race on cluster power down On the TC2 testchip, when all CPUs in a cluster enter standbywfi and commit a power down request, the power controller will wait for standbywfil2 coming from L2 cache controller to shut the cluster down. By the time all CPUs in a cluster commit a power down request and enter wfi, the power controller cannot backtrack, or put it another way, a CPU must not be allowed to complete execution independently of the power controller, the only way for it to resume properly must be upon wake-up IRQ pending and subsequent reset triggered from the power controller. Current MCPM back-end for TC2 disables the GIC CPU IF only when power down is committed through the tc2_pm_suspend() method, that makes sense since a suspended CPU is still online and can receive interrupts whereas a hotplugged CPU, since it is offline, migrated all IRQs and shutdown the per-CPU peripherals, hence their PPIs. The flaw with this reasoning is the following. If all CPUs in a clusters are entering a power down state either through CPU idle or CPU hotplug, when the last man successfully completes the MCPM power down sequence (and executes wfi), power controller waits for L2 wfi signal to quiesce the cluster and shut it down. If, when all CPUs are sitting in wfi, an online CPU hotplugs back in one of the CPUs in the cluster being shutdown, that CPU receives an IPI that causes wfi to complete (since tc2_pm_down() method does not disable the GIC CPU IF in that case - CPU being hotplugged out, not idle) and the power controller will never see the stanbywfil2 signal coming from L2 that is required for shutdown to happen and the system deadlocks. Further to this issue, kexec hotplugs secondary CPUs out during kernel reload/restart. Because kexec may (deliberately) trash the old kernel text, it is not OK for CPUs to follow the MCPM soft reboot path, since instructions after the WFI may have been replaced by kexec. If tc2_pm_down() does not disable the GIC cpu interface, there is a race between CPU powerdown in the old kernel and the IPI from the new kernel that triggers secondary boot, particularly if the powerdown is slow (due to L2 cache cleaning for example). If the new kernel wins the race, the affected CPU(s) will not really be reset and may execute garbage after the WFI. The only solution to this problem consists in disabling the GIC CPU IF on a CPU committed to power down regardless of the power down entry method (CPU hotplug or CPU idle). This way, CPU wake-up is under power controller control, which prevents unexpected wfi exit caused by a pending IRQ. This patch moves the GIC CPU IF disable call in the TC2 MCPM implementation from the tc2_pm_suspend() method to the tc2_pm_down() method to fix the mentioned race condition(s). Reviewed-by: Dave Martin Tested-by: Dave Martin (for kexec) Signed-off-by: Sudeep KarkadaNagesha Signed-off-by: Lorenzo Pieralisi Acked-by: Nicolas Pitre Signed-off-by: Olof Johansson --- arch/arm/mach-vexpress/tc2_pm.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/mach-vexpress/tc2_pm.c b/arch/arm/mach-vexpress/tc2_pm.c index 7aeb5d60e484..e6eb48192912 100644 --- a/arch/arm/mach-vexpress/tc2_pm.c +++ b/arch/arm/mach-vexpress/tc2_pm.c @@ -131,6 +131,16 @@ static void tc2_pm_down(u64 residency) } else BUG(); + /* + * If the CPU is committed to power down, make sure + * the power controller will be in charge of waking it + * up upon IRQ, ie IRQ lines are cut from GIC CPU IF + * to the CPU by disabling the GIC CPU IF to prevent wfi + * from completing execution behind power controller back + */ + if (!skip_wfi) + gic_cpu_if_down(); + if (last_man && __mcpm_outbound_enter_critical(cpu, cluster)) { arch_spin_unlock(&tc2_pm_lock); @@ -231,7 +241,6 @@ static void tc2_pm_suspend(u64 residency) cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); ve_spc_set_resume_addr(cluster, cpu, virt_to_phys(mcpm_entry_point)); - gic_cpu_if_down(); tc2_pm_down(residency); } -- cgit v1.2.3 From 6cdaca481f6c415025c2687c109674919aa61934 Mon Sep 17 00:00:00 2001 From: Joel Fernandes Date: Thu, 26 Sep 2013 16:55:46 -0500 Subject: ARM: edma: Fix clearing of unused list for DT DMA resources HWMOD removal for MMC is breaking edma_start as the events are being manually triggered due to unused channel list not being clear. The above issue is fixed by reading the "dmas" property from the DT node if it exists and clearing the bits in the unused channel list if the dma controller used by any device is EDMA. For this purpose we use the of_* helpers to parse the arguments in the dmas phandle list. Also introduced is a minor clean up of a checkpatch error in old code. Reviewed-by: Sekhar Nori Reported-by: Balaji T K Cc: Sekhar Nori Cc: Tony Lindgren Cc: Olof Johansson Cc: Nishanth Menon Cc: Pantel Antoniou Cc: Jason Kridner Cc: Koen Kooi Signed-off-by: Joel Fernandes Signed-off-by: Olof Johansson --- arch/arm/common/edma.c | 38 +++++++++++++++++++++++++++++++------- 1 file changed, 31 insertions(+), 7 deletions(-) (limited to 'arch') diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c index 117f955a2a06..8e1a0245907f 100644 --- a/arch/arm/common/edma.c +++ b/arch/arm/common/edma.c @@ -269,6 +269,11 @@ static const struct edmacc_param dummy_paramset = { .ccnt = 1, }; +static const struct of_device_id edma_of_ids[] = { + { .compatible = "ti,edma3", }, + {} +}; + /*****************************************************************************/ static void map_dmach_queue(unsigned ctlr, unsigned ch_no, @@ -560,14 +565,38 @@ static int reserve_contiguous_slots(int ctlr, unsigned int id, static int prepare_unused_channel_list(struct device *dev, void *data) { struct platform_device *pdev = to_platform_device(dev); - int i, ctlr; + int i, count, ctlr; + struct of_phandle_args dma_spec; + if (dev->of_node) { + count = of_property_count_strings(dev->of_node, "dma-names"); + if (count < 0) + return 0; + for (i = 0; i < count; i++) { + if (of_parse_phandle_with_args(dev->of_node, "dmas", + "#dma-cells", i, + &dma_spec)) + continue; + + if (!of_match_node(edma_of_ids, dma_spec.np)) { + of_node_put(dma_spec.np); + continue; + } + + clear_bit(EDMA_CHAN_SLOT(dma_spec.args[0]), + edma_cc[0]->edma_unused); + of_node_put(dma_spec.np); + } + return 0; + } + + /* For non-OF case */ for (i = 0; i < pdev->num_resources; i++) { if ((pdev->resource[i].flags & IORESOURCE_DMA) && (int)pdev->resource[i].start >= 0) { ctlr = EDMA_CTLR(pdev->resource[i].start); clear_bit(EDMA_CHAN_SLOT(pdev->resource[i].start), - edma_cc[ctlr]->edma_unused); + edma_cc[ctlr]->edma_unused); } } @@ -1762,11 +1791,6 @@ static int edma_probe(struct platform_device *pdev) return 0; } -static const struct of_device_id edma_of_ids[] = { - { .compatible = "ti,edma3", }, - {} -}; - static struct platform_driver edma_driver = { .driver = { .name = "edma", -- cgit v1.2.3 From bd737fea4e49b7c0e848e3765c6b45a858de41a8 Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Fri, 27 Sep 2013 08:37:59 +0200 Subject: ARM: at91: sam9g45: shutdown ddr1 too when rebooting Like we are doing on DDR0 we need to cleanly shutdown DDR1 if it is used before rebooting. If DDR1 is not initialized, we check it and avoid dereferencing its address. Even by adding two more instructions, we are able to complete the procedure within a single cache line. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Nicolas Ferre Signed-off-by: Olof Johansson --- arch/arm/mach-at91/at91sam9g45_reset.S | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch') diff --git a/arch/arm/mach-at91/at91sam9g45_reset.S b/arch/arm/mach-at91/at91sam9g45_reset.S index 721a1a34dd1d..c40c1e2ef80f 100644 --- a/arch/arm/mach-at91/at91sam9g45_reset.S +++ b/arch/arm/mach-at91/at91sam9g45_reset.S @@ -16,11 +16,17 @@ #include "at91_rstc.h" .arm +/* + * at91_ramc_base is an array void* + * init at NULL if only one DDR controler is present in or DT + */ .globl at91sam9g45_restart at91sam9g45_restart: ldr r5, =at91_ramc_base @ preload constants ldr r0, [r5] + ldr r5, [r5, #4] @ ddr1 + cmp r5, #0 ldr r4, =at91_rstc_base ldr r1, [r4] @@ -30,6 +36,8 @@ at91sam9g45_restart: .balign 32 @ align to cache line + strne r2, [r5, #AT91_DDRSDRC_RTR] @ disable DDR1 access + strne r3, [r5, #AT91_DDRSDRC_LPR] @ power down DDR1 str r2, [r0, #AT91_DDRSDRC_RTR] @ disable DDR0 access str r3, [r0, #AT91_DDRSDRC_LPR] @ power down DDR0 str r4, [r1, #AT91_RSTC_CR] @ reset processor -- cgit v1.2.3 From b643f85814f69306b9a6e0df34a1c8acb97d3bbd Mon Sep 17 00:00:00 2001 From: Arnaud Ebalard Date: Tue, 1 Oct 2013 00:19:16 +0200 Subject: ARM: mvebu: add missing DT Mbus ranges and relocate PCIe DT nodes for RN102 When 5e12a613 and 0cd3754a were introduced, Netgear ReadyNAS 102 .dts file was queued for inclusion and missed the update to have Mbus (and then BootROM) ranges properties declared. It also missed the relocation of Armada 370/XP PCIe DT nodes introduced by 14fd8ed0 after de1af8d4. This patch fixes that which makes 3.12-rc3 bootable on the NAS. Signed-off-by: Arnaud Ebalard Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-370-netgear-rn102.dts | 35 ++++++++++++++------------ 1 file changed, 19 insertions(+), 16 deletions(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/armada-370-netgear-rn102.dts b/arch/arm/boot/dts/armada-370-netgear-rn102.dts index 40e73be31720..8ac2ac1f69cc 100644 --- a/arch/arm/boot/dts/armada-370-netgear-rn102.dts +++ b/arch/arm/boot/dts/armada-370-netgear-rn102.dts @@ -27,6 +27,25 @@ }; soc { + ranges = ; + + pcie-controller { + status = "okay"; + + /* Connected to Marvell SATA controller */ + pcie@1,0 { + /* Port 0, Lane 0 */ + status = "okay"; + }; + + /* Connected to FL1009 USB 3.0 controller */ + pcie@2,0 { + /* Port 1, Lane 0 */ + status = "okay"; + }; + }; + internal-regs { serial@12000 { clock-frequency = <200000000>; @@ -94,22 +113,6 @@ pwm_polarity = <0>; }; }; - - pcie-controller { - status = "okay"; - - /* Connected to Marvell SATA controller */ - pcie@1,0 { - /* Port 0, Lane 0 */ - status = "okay"; - }; - - /* Connected to FL1009 USB 3.0 controller */ - pcie@2,0 { - /* Port 1, Lane 0 */ - status = "okay"; - }; - }; }; }; -- cgit v1.2.3 From e33a29a5ae711162c6b6fefc0a2ef18f4a4254bf Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Tue, 1 Oct 2013 18:18:40 +0200 Subject: x86/simplefb: Fix overflow causing bogus fall-back On my MacBook Air lfb_size is 4M, which makes the bitshit overflow (to 256GB - larger than 32 bits), meaning we fall back to efifb unnecessarily. Cast to u64 to avoid the overflow. Signed-off-by: Tom Gundersen Reviewed-by: David Herrmann Cc: Geert Uytterhoeven Cc: Stephen Warren Cc: Stephen Warren Link: http://lkml.kernel.org/r/1380644320-1026-1-git-send-email-teg@jklm.no Signed-off-by: Ingo Molnar --- arch/x86/kernel/sysfb_simplefb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/kernel/sysfb_simplefb.c b/arch/x86/kernel/sysfb_simplefb.c index 22513e96b012..4ebd636b04b8 100644 --- a/arch/x86/kernel/sysfb_simplefb.c +++ b/arch/x86/kernel/sysfb_simplefb.c @@ -72,7 +72,7 @@ __init int create_simplefb(const struct screen_info *si, * the part that is occupied by the framebuffer */ len = mode->height * mode->stride; len = PAGE_ALIGN(len); - if (len > si->lfb_size << 16) { + if (len > (u64)si->lfb_size << 16) { printk(KERN_WARNING "sysfb: VRAM smaller than advertised\n"); return -EINVAL; } -- cgit v1.2.3 From 5596b0b245fb9d2cefb5023b11061050351c1398 Mon Sep 17 00:00:00 2001 From: Yoichi Yuasa Date: Wed, 2 Oct 2013 15:03:03 +0900 Subject: MIPS: Fix forgotten preempt_enable() when CPU has inclusive pcaches [ 1.904000] BUG: scheduling while atomic: swapper/1/0x00000002 [ 1.908000] Modules linked in: [ 1.916000] CPU: 0 PID: 1 Comm: swapper Not tainted 3.12.0-rc2-lemote-los.git-5318619-dirty #1 [ 1.920000] Stack : 0000000031aac000 ffffffff810d0000 0000000000000052 ffffffff802730a4 0000000000000000 0000000000000001 ffffffff810cdf90 ffffffff810d0000 ffffffff8068b968 ffffffff806f5537 ffffffff810cdf90 980000009f0782e8 0000000000000001 ffffffff80720000 ffffffff806b0000 980000009f078000 980000009f290000 ffffffff805f312c 980000009f05b5d8 ffffffff80233518 980000009f05b5e8 ffffffff80274b7c 980000009f078000 ffffffff8068b968 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 980000009f05b520 0000000000000000 ffffffff805f2f6c 0000000000000000 ffffffff80700000 ffffffff80700000 ffffffff806fc758 ffffffff80700000 ffffffff8020be98 ffffffff806fceb0 ffffffff805f2f6c ... [ 2.028000] Call Trace: [ 2.032000] [] show_stack+0x80/0x98 [ 2.036000] [] __schedule_bug+0x44/0x6c [ 2.040000] [] __schedule+0x518/0x5b0 [ 2.044000] [] schedule_timeout+0x128/0x1f0 [ 2.048000] [] msleep+0x3c/0x60 [ 2.052000] [] do_probe+0x238/0x3a8 [ 2.056000] [] ide_probe_port+0x340/0x7e8 [ 2.060000] [] ide_host_register+0x2d0/0x7a8 [ 2.064000] [] ide_pci_init_two+0x4e4/0x790 [ 2.068000] [] amd74xx_probe+0x148/0x2c8 [ 2.072000] [] pci_device_probe+0xc4/0x130 [ 2.076000] [] driver_probe_device+0x98/0x270 [ 2.080000] [] __driver_attach+0xe0/0xe8 [ 2.084000] [] bus_for_each_dev+0x78/0xe0 [ 2.088000] [] bus_add_driver+0x230/0x310 [ 2.092000] [] driver_register+0x84/0x158 [ 2.096000] [] do_one_initcall+0x104/0x160 Signed-off-by: Yoichi Yuasa Reported-by: Aaro Koskinen Tested-by: Aaro Koskinen Cc: linux-mips@linux-mips.org Cc: Linux Kernel Mailing List Patchwork: https://patchwork.linux-mips.org/patch/5941/ Signed-off-by: Ralf Baechle --- arch/mips/mm/c-r4k.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch') diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 627883bc6d5f..bc6f96fcb529 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -609,6 +609,7 @@ static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size) r4k_blast_scache(); else blast_scache_range(addr, addr + size); + preempt_enable(); __sync(); return; } @@ -650,6 +651,7 @@ static void r4k_dma_cache_inv(unsigned long addr, unsigned long size) */ blast_inv_scache_range(addr, addr + size); } + preempt_enable(); __sync(); return; } -- cgit v1.2.3 From c9b24996d5da1bf7d2bebab5770dfcc7834c53b7 Mon Sep 17 00:00:00 2001 From: Andreas Herrmann Date: Fri, 27 Sep 2013 00:36:15 +0200 Subject: ARM: dma-mapping: Always pass proper prot flags to iommu_map() ... otherwise it is impossible for the low level iommu driver to figure out which pte flags should be used. In __map_sg_chunk we can derive the flags from dma_data_direction. In __iommu_create_mapping we should treat the memory like DMA_BIDIRECTIONAL and pass both IOMMU_READ and IOMMU_WRITE to iommu_map. __iommu_create_mapping is used during dma_alloc_coherent (via arm_iommu_alloc_attrs). AFAIK dma_alloc_coherent is responsible for allocation _and_ mapping. I think this implies that access to the mapped pages should be allowed. Cc: Marek Szyprowski Signed-off-by: Andreas Herrmann Acked-by: Will Deacon Signed-off-by: Marek Szyprowski --- arch/arm/mm/dma-mapping.c | 43 ++++++++++++++++++++++++++++--------------- 1 file changed, 28 insertions(+), 15 deletions(-) (limited to 'arch') diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index f5e1a8471714..1272ed202dde 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -1232,7 +1232,8 @@ __iommu_create_mapping(struct device *dev, struct page **pages, size_t size) break; len = (j - i) << PAGE_SHIFT; - ret = iommu_map(mapping->domain, iova, phys, len, 0); + ret = iommu_map(mapping->domain, iova, phys, len, + IOMMU_READ|IOMMU_WRITE); if (ret < 0) goto fail; iova += len; @@ -1431,6 +1432,27 @@ static int arm_iommu_get_sgtable(struct device *dev, struct sg_table *sgt, GFP_KERNEL); } +static int __dma_direction_to_prot(enum dma_data_direction dir) +{ + int prot; + + switch (dir) { + case DMA_BIDIRECTIONAL: + prot = IOMMU_READ | IOMMU_WRITE; + break; + case DMA_TO_DEVICE: + prot = IOMMU_READ; + break; + case DMA_FROM_DEVICE: + prot = IOMMU_WRITE; + break; + default: + prot = 0; + } + + return prot; +} + /* * Map a part of the scatter-gather list into contiguous io address space */ @@ -1444,6 +1466,7 @@ static int __map_sg_chunk(struct device *dev, struct scatterlist *sg, int ret = 0; unsigned int count; struct scatterlist *s; + int prot; size = PAGE_ALIGN(size); *handle = DMA_ERROR_CODE; @@ -1460,7 +1483,9 @@ static int __map_sg_chunk(struct device *dev, struct scatterlist *sg, !dma_get_attr(DMA_ATTR_SKIP_CPU_SYNC, attrs)) __dma_page_cpu_to_dev(sg_page(s), s->offset, s->length, dir); - ret = iommu_map(mapping->domain, iova, phys, len, 0); + prot = __dma_direction_to_prot(dir); + + ret = iommu_map(mapping->domain, iova, phys, len, prot); if (ret < 0) goto fail; count += len >> PAGE_SHIFT; @@ -1665,19 +1690,7 @@ static dma_addr_t arm_coherent_iommu_map_page(struct device *dev, struct page *p if (dma_addr == DMA_ERROR_CODE) return dma_addr; - switch (dir) { - case DMA_BIDIRECTIONAL: - prot = IOMMU_READ | IOMMU_WRITE; - break; - case DMA_TO_DEVICE: - prot = IOMMU_READ; - break; - case DMA_FROM_DEVICE: - prot = IOMMU_WRITE; - break; - default: - prot = 0; - } + prot = __dma_direction_to_prot(dir); ret = iommu_map(mapping->domain, dma_addr, page_to_phys(page), len, prot); if (ret < 0) -- cgit v1.2.3 From 09d3ce74d7d60f37d1b030886ec659bbfe2e73bf Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Tue, 1 Oct 2013 21:48:43 +0100 Subject: arm64: Remove duplicate DEBUG_STACK_USAGE config This config item already exists generically in lib/Kconfig.debug. Remove the duplicate config in arm64. Signed-off-by: Stephen Boyd Signed-off-by: Catalin Marinas --- arch/arm64/Kconfig.debug | 7 ------- 1 file changed, 7 deletions(-) (limited to 'arch') diff --git a/arch/arm64/Kconfig.debug b/arch/arm64/Kconfig.debug index 1a6bfe954d49..835c559786bd 100644 --- a/arch/arm64/Kconfig.debug +++ b/arch/arm64/Kconfig.debug @@ -6,13 +6,6 @@ config FRAME_POINTER bool default y -config DEBUG_STACK_USAGE - bool "Enable stack utilization instrumentation" - depends on DEBUG_KERNEL - help - Enables the display of the minimum amount of free stack which each - task has ever had available in the sysrq-T output. - config EARLY_PRINTK bool "Early printk support" default y -- cgit v1.2.3 From 19514fc665ffbce624785f76ee7ad0ea6378a527 Mon Sep 17 00:00:00 2001 From: Robert Richter Date: Wed, 17 Jul 2013 18:05:06 +0200 Subject: arm, kbuild: make "make install" not depend on vmlinux Install targets (install, zinstall, uinstall) on arm have a dependency to vmlinux. This may cause parts of the kernel to be rebuilt during installation. We must avoid this since this may run as root. Install targets "ABSOLUTELY MUST NOT MODIFY THE SOURCE TREE." as Linus emphasized this in: http://lkml.org/lkml/2013/7/10/600 So on arm and maybe other archs we need the same as for x86: 1648e4f8 x86, kbuild: make "make install" not depend on vmlinux This patch fixes this for arm. Dependencies are removed and instead a check to install.sh is added for the files that are needed. This issue was uncovered by this build error where the -j option is used in conjunction with install targets: $ make $ make zinstall ... DEPMOD Usage: .../scripts/depmod.sh /sbin/depmod (INSTALL_MOD_PATH and INSTALL_PATH variables set, so no root perms required in this case.) The problem is that zinstall on arm due to its dependency to vmlinux does a prepare/prepare3 and finally does a forced rewrite of kernel.release even if it exists already. Rebuilding kernel.release removes it first and then recreates it. This might race with another parallel make job running depmod. So this patch should fix this one too. Also quoting $(KERNELRELEASE) arg for install.sh as this messes argument order in case it is empty (which is the case if the kernel was not built yet). Signed-off-by: Robert Richter Signed-off-by: Robert Richter Acked-by: Michal Marek . Acked-by: Linus Torvalds Signed-off-by: "Yann E. MORIN" Signed-off-by: Michal Marek --- arch/arm/Makefile | 9 +++++++-- arch/arm/boot/Makefile | 16 ++++++++-------- arch/arm/boot/install.sh | 14 ++++++++++++++ 3 files changed, 29 insertions(+), 10 deletions(-) (limited to 'arch') diff --git a/arch/arm/Makefile b/arch/arm/Makefile index a37a50f575a2..db50b626be98 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -296,10 +296,15 @@ archprepare: # Convert bzImage to zImage bzImage: zImage -zImage Image xipImage bootpImage uImage: vmlinux +BOOT_TARGETS = zImage Image xipImage bootpImage uImage +INSTALL_TARGETS = zinstall uinstall install + +PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS) + +$(BOOT_TARGETS): vmlinux $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ -zinstall uinstall install: vmlinux +$(INSTALL_TARGETS): $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ %.dtb: | scripts diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile index 84aa2caf07ed..ec2f8065f955 100644 --- a/arch/arm/boot/Makefile +++ b/arch/arm/boot/Makefile @@ -95,24 +95,24 @@ initrd: @test "$(INITRD)" != "" || \ (echo You must specify INITRD; exit -1) -install: $(obj)/Image - $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \ +install: + $(CONFIG_SHELL) $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" \ $(obj)/Image System.map "$(INSTALL_PATH)" -zinstall: $(obj)/zImage - $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \ +zinstall: + $(CONFIG_SHELL) $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" \ $(obj)/zImage System.map "$(INSTALL_PATH)" -uinstall: $(obj)/uImage - $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \ +uinstall: + $(CONFIG_SHELL) $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" \ $(obj)/uImage System.map "$(INSTALL_PATH)" zi: - $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \ + $(CONFIG_SHELL) $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" \ $(obj)/zImage System.map "$(INSTALL_PATH)" i: - $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \ + $(CONFIG_SHELL) $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" \ $(obj)/Image System.map "$(INSTALL_PATH)" subdir- := bootp compressed dts diff --git a/arch/arm/boot/install.sh b/arch/arm/boot/install.sh index 06ea7d42ce8e..2a45092a40e3 100644 --- a/arch/arm/boot/install.sh +++ b/arch/arm/boot/install.sh @@ -20,6 +20,20 @@ # $4 - default install path (blank if root directory) # +verify () { + if [ ! -f "$1" ]; then + echo "" 1>&2 + echo " *** Missing file: $1" 1>&2 + echo ' *** You need to run "make" before "make install".' 1>&2 + echo "" 1>&2 + exit 1 + fi +} + +# Make sure the files actually exist +verify "$2" +verify "$3" + # User may have a custom install script if [ -x ~/bin/${INSTALLKERNEL} ]; then exec ~/bin/${INSTALLKERNEL} "$@"; fi if [ -x /sbin/${INSTALLKERNEL} ]; then exec /sbin/${INSTALLKERNEL} "$@"; fi -- cgit v1.2.3 From 20928bd3f08afb036c096d9559d581926b895918 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 1 Oct 2013 22:13:34 -0700 Subject: sparc: fix ldom_reboot buffer overflow harder The length argument to strlcpy was still wrong. It could overflow the end of full_boot_str by 5 bytes. Instead of strcat and strlcpy, just use snprint. Reported-by: Brad Spengler Signed-off-by: Kees Cook Signed-off-by: David S. Miller --- arch/sparc/kernel/ds.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c index 4d9ac8406f32..dff60abbea01 100644 --- a/arch/sparc/kernel/ds.c +++ b/arch/sparc/kernel/ds.c @@ -849,9 +849,8 @@ void ldom_reboot(const char *boot_command) if (boot_command && strlen(boot_command)) { unsigned long len; - strcpy(full_boot_str, "boot "); - strlcpy(full_boot_str + strlen("boot "), boot_command, - sizeof(full_boot_str)); + snprintf(full_boot_str, sizeof(full_boot_str), "boot %s", + boot_command); len = strlen(full_boot_str); if (reboot_data_supported) { -- cgit v1.2.3 From d2f09b1c17158fa870fb4f78babf1b307cd2685b Mon Sep 17 00:00:00 2001 From: Michael Opdenacker Date: Sat, 7 Sep 2013 09:38:09 +0200 Subject: sparc: remove deprecated IRQF_DISABLED This patch proposes to remove the IRQF_DISABLED flag from sparc architecture code. It's a NOOP since 2.6.35 and it will be removed one day. Signed-off-by: Michael Opdenacker Signed-off-by: David S. Miller --- arch/sparc/include/asm/floppy_64.h | 2 +- arch/sparc/kernel/ldc.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/sparc/include/asm/floppy_64.h b/arch/sparc/include/asm/floppy_64.h index e204f902e6c9..7c90c50c200d 100644 --- a/arch/sparc/include/asm/floppy_64.h +++ b/arch/sparc/include/asm/floppy_64.h @@ -254,7 +254,7 @@ static int sun_fd_request_irq(void) once = 1; error = request_irq(FLOPPY_IRQ, sparc_floppy_irq, - IRQF_DISABLED, "floppy", NULL); + 0, "floppy", NULL); return ((error == 0) ? 0 : -1); } diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c index 54df554b82d9..e01d75d40329 100644 --- a/arch/sparc/kernel/ldc.c +++ b/arch/sparc/kernel/ldc.c @@ -1249,12 +1249,12 @@ int ldc_bind(struct ldc_channel *lp, const char *name) snprintf(lp->rx_irq_name, LDC_IRQ_NAME_MAX, "%s RX", name); snprintf(lp->tx_irq_name, LDC_IRQ_NAME_MAX, "%s TX", name); - err = request_irq(lp->cfg.rx_irq, ldc_rx, IRQF_DISABLED, + err = request_irq(lp->cfg.rx_irq, ldc_rx, 0, lp->rx_irq_name, lp); if (err) return err; - err = request_irq(lp->cfg.tx_irq, ldc_tx, IRQF_DISABLED, + err = request_irq(lp->cfg.tx_irq, ldc_tx, 0, lp->tx_irq_name, lp); if (err) { free_irq(lp->cfg.rx_irq, lp); -- cgit v1.2.3 From a988fb806d72d4e3a0edbeaece3f2f1172ce44b8 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Wed, 11 Sep 2013 12:32:05 +0200 Subject: sparc: fix MSI build failure on Sparc32 Commit ebd97be635 ('PCI: remove ARCH_SUPPORTS_MSI kconfig option') removes the ARCH_SUPPORTS_MSI Kconfig option that allowed architectures to indicate whether they support PCI MSI or not. Now, PCI MSI support can be compiled in on any architecture thanks to the use of weak functions thanks to 4287d824f265 ('PCI: use weak functions for MSI arch-specific functions'). So, architecture specific code is now responsible to ensure that its PCI MSI code builds in all cases, or be appropriately conditionally compiled. On Sparc, the MSI support is only provided for Sparc64, so the ARCH_SUPPORTS_MSI kconfig option was only selected for SPARC64, and not for the Sparc architecture as a whole. Therefore, removing ARCH_SUPPORTS_MSI broke Sparc32 configurations with CONFIG_PCI_MSI=y, because the Sparc-specific MSI code is not designed to be built on Sparc32. To solve this, this commit ensures that the Sparc MSI code is only built on Sparc64. This is done thanks to a new Kconfig Makefile helper option SPARC64_PCI_MSI, modeled after the existing SPARC64_PCI. The SPARC64_PCI_MSI option is an hidden option that is true when both Sparc64 PCI support is enabled and MSI is enabled. The arch/sparc/kernel/pci_msi.c file is now only built when SPARC64_PCI_MSI is true. Signed-off-by: Thomas Petazzoni Reported-by: Guenter Roeck Tested-by: Guenter Roeck Signed-off-by: David S. Miller --- arch/sparc/Kconfig | 7 ++++++- arch/sparc/kernel/Makefile | 3 ++- 2 files changed, 8 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 2137ad667438..78c4fdb91bc5 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -506,12 +506,17 @@ config SUN_OPENPROMFS Only choose N if you know in advance that you will not need to modify OpenPROM settings on the running system. -# Makefile helper +# Makefile helpers config SPARC64_PCI bool default y depends on SPARC64 && PCI +config SPARC64_PCI_MSI + bool + default y + depends on SPARC64_PCI && PCI_MSI + endmenu menu "Executable file formats" diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index d432fb20358e..d15cc1794b0e 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -1,3 +1,4 @@ + # # Makefile for the linux kernel. # @@ -99,7 +100,7 @@ obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-$(CONFIG_SPARC64_PCI) += pci.o pci_common.o psycho_common.o obj-$(CONFIG_SPARC64_PCI) += pci_psycho.o pci_sabre.o pci_schizo.o obj-$(CONFIG_SPARC64_PCI) += pci_sun4v.o pci_sun4v_asm.o pci_fire.o -obj-$(CONFIG_PCI_MSI) += pci_msi.o +obj-$(CONFIG_SPARC64_PCI_MSI) += pci_msi.o obj-$(CONFIG_COMPAT) += sys32.o sys_sparc32.o signal32.o -- cgit v1.2.3 From 4f76d37cdb6523ad42ba666f0e5560e26b4c3749 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Sun, 29 Sep 2013 17:34:45 -0700 Subject: ARM: multi_v7_defconfig: add SDHCI for i.MX Turn on SDHCI for i.MX support so machines can boot with local rootfs on SD. Tested on a Wandboard Quad. Signed-off-by: Olof Johansson Reviewed-by: Fabio Estevam --- 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 f3935b46df29..119fc378fc52 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -135,6 +135,7 @@ CONFIG_MMC=y CONFIG_MMC_ARMMMCI=y CONFIG_MMC_SDHCI=y CONFIG_MMC_SDHCI_PLTFM=y +CONFIG_MMC_SDHCI_ESDHC_IMX=y CONFIG_MMC_SDHCI_TEGRA=y CONFIG_MMC_SDHCI_SPEAR=y CONFIG_MMC_OMAP=y -- cgit v1.2.3 From 10469350e345599dfef3fa78a7c19fb230e674c1 Mon Sep 17 00:00:00 2001 From: Christian Ruppert Date: Wed, 2 Oct 2013 11:13:38 +0200 Subject: ARC: Fix signal frame management for SA_SIGINFO Previously, when a signal was registered with SA_SIGINFO, parameters 2 and 3 of the signal handler were written to registers r1 and r2 before the register set was saved. This led to corruption of these two registers after returning from the signal handler (the wrong values were restored). With this patch, registers are now saved before any parameters are passed, thus maintaining the processor state from before signal entry. Signed-off-by: Christian Ruppert Signed-off-by: Vineet Gupta --- arch/arc/kernel/signal.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) (limited to 'arch') diff --git a/arch/arc/kernel/signal.c b/arch/arc/kernel/signal.c index ee6ef2f60a28..7e95e1a86510 100644 --- a/arch/arc/kernel/signal.c +++ b/arch/arc/kernel/signal.c @@ -101,7 +101,6 @@ SYSCALL_DEFINE0(rt_sigreturn) { struct rt_sigframe __user *sf; unsigned int magic; - int err; struct pt_regs *regs = current_pt_regs(); /* Always make any pending restarted system calls return -EINTR */ @@ -119,15 +118,16 @@ SYSCALL_DEFINE0(rt_sigreturn) if (!access_ok(VERIFY_READ, sf, sizeof(*sf))) goto badframe; - err = restore_usr_regs(regs, sf); - err |= __get_user(magic, &sf->sigret_magic); - if (err) + if (__get_user(magic, &sf->sigret_magic)) goto badframe; if (unlikely(is_do_ss_needed(magic))) if (restore_altstack(&sf->uc.uc_stack)) goto badframe; + if (restore_usr_regs(regs, sf)) + goto badframe; + /* Don't restart from sigreturn */ syscall_wont_restart(regs); @@ -190,6 +190,15 @@ setup_rt_frame(int signo, struct k_sigaction *ka, siginfo_t *info, if (!sf) return 1; + /* + * w/o SA_SIGINFO, struct ucontext is partially populated (only + * uc_mcontext/uc_sigmask) for kernel's normal user state preservation + * during signal handler execution. This works for SA_SIGINFO as well + * although the semantics are now overloaded (the same reg state can be + * inspected by userland: but are they allowed to fiddle with it ? + */ + err |= stash_usr_regs(sf, regs, set); + /* * SA_SIGINFO requires 3 args to signal handler: * #1: sig-no (common to any handler) @@ -213,14 +222,6 @@ setup_rt_frame(int signo, struct k_sigaction *ka, siginfo_t *info, magic = MAGIC_SIGALTSTK; } - /* - * w/o SA_SIGINFO, struct ucontext is partially populated (only - * uc_mcontext/uc_sigmask) for kernel's normal user state preservation - * during signal handler execution. This works for SA_SIGINFO as well - * although the semantics are now overloaded (the same reg state can be - * inspected by userland: but are they allowed to fiddle with it ? - */ - err |= stash_usr_regs(sf, regs, set); err |= __put_user(magic, &sf->sigret_magic); if (err) return err; -- cgit v1.2.3 From 29d274b8d3e2404cd1832b3a999b12f9d1e1d895 Mon Sep 17 00:00:00 2001 From: David Herrmann Date: Wed, 2 Oct 2013 16:41:04 +0200 Subject: x86/simplefb: Mark framebuffer mem-resources as IORESOURCE_BUSY to avoid bootup warning IORESOURCE_BUSY is used to mark temporary driver mem-resources instead of global regions. This suppresses warnings if regions overlap with a region marked as BUSY. This was always the case for VESA/VGA/EFI framebuffer regions so do the same for simplefb regions. The reason we do this is to allow device handover to real GPU drivers like i915/radeon/nouveau which get the same regions via PCI BARs. Maybe at some point we will be able to unregister platform devices properly during the handover. In this case the simplefb region would get removed before the new region is created. However, this is currently not the case and would require rather huge changes in remove_conflicting_framebuffers(). Add the BUSY marker now and try to eventually rewrite the handover for a next release. Also see kernel/resource.c for more information: /* * if a resource is "BUSY", it's not a hardware resource * but a driver mapping of such a resource; we don't want * to warn for those; some drivers legitimately map only * partial hardware resources. (example: vesafb) */ This suppresses warnings like: ------------[ cut here ]------------ WARNING: CPU: 2 PID: 199 at arch/x86/mm/ioremap.c:171 __ioremap_caller+0x2e3/0x390() Info: mapping multiple BARs. Your kernel is fine. Call Trace: dump_stack+0x54/0x8d warn_slowpath_common+0x7d/0xa0 warn_slowpath_fmt+0x4c/0x50 iomem_map_sanity_check+0xac/0xe0 __ioremap_caller+0x2e3/0x390 ioremap_wc+0x32/0x40 i915_driver_load+0x670/0xf50 [i915] ... Reported-by: Tom Gundersen Tested-by: Tom Gundersen Tested-by: Pavel Roskin Signed-off-by: David Herrmann Link: http://lkml.kernel.org/r/1380724864-1757-1-git-send-email-dh.herrmann@gmail.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/sysfb_simplefb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/kernel/sysfb_simplefb.c b/arch/x86/kernel/sysfb_simplefb.c index 4ebd636b04b8..86179d409893 100644 --- a/arch/x86/kernel/sysfb_simplefb.c +++ b/arch/x86/kernel/sysfb_simplefb.c @@ -79,7 +79,7 @@ __init int create_simplefb(const struct screen_info *si, /* setup IORESOURCE_MEM as framebuffer memory */ memset(&res, 0, sizeof(res)); - res.flags = IORESOURCE_MEM; + res.flags = IORESOURCE_MEM | IORESOURCE_BUSY; res.name = simplefb_resname; res.start = si->lfb_base; res.end = si->lfb_base + len - 1; -- cgit v1.2.3 From f7e3334a6bcb42e7295a9bd9cb36ca4e6e4e66b4 Mon Sep 17 00:00:00 2001 From: Nathan Fontenot Date: Fri, 27 Sep 2013 10:18:09 -0500 Subject: powerpc: Fix memory hotplug with sparse vmemmap Previous commit 46723bfa540... introduced a new config option HAVE_BOOTMEM_INFO_NODE that ended up breaking memory hot-remove for ppc when sparse vmemmap is not defined. This patch defines HAVE_BOOTMEM_INFO_NODE for ppc and adds the call to register_page_bootmem_info_node. Without this we get a BUG_ON for memory hot remove in put_page_bootmem(). This also adds a stub for register_page_bootmem_memmap to allow ppc to build with sparse vmemmap defined. Leaving this as a stub is fine since the same vmemmap addresses are also handled in vmemmap_populate and as such are properly mapped. Signed-off-by: Nathan Fontenot Signed-off-by: Benjamin Herrenschmidt CC: [v3.9+] --- arch/powerpc/mm/init_64.c | 4 ++++ arch/powerpc/mm/mem.c | 9 +++++++++ mm/Kconfig | 2 +- 3 files changed, 14 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index d0cd9e4c6837..8ed035d2edb5 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -300,5 +300,9 @@ void vmemmap_free(unsigned long start, unsigned long end) { } +void register_page_bootmem_memmap(unsigned long section_nr, + struct page *start_page, unsigned long size) +{ +} #endif /* CONFIG_SPARSEMEM_VMEMMAP */ diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 1cf9c5b67f24..3fa93dc7fe75 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -297,12 +297,21 @@ void __init paging_init(void) } #endif /* ! CONFIG_NEED_MULTIPLE_NODES */ +static void __init register_page_bootmem_info(void) +{ + int i; + + for_each_online_node(i) + register_page_bootmem_info_node(NODE_DATA(i)); +} + void __init mem_init(void) { #ifdef CONFIG_SWIOTLB swiotlb_init(0); #endif + register_page_bootmem_info(); high_memory = (void *) __va(max_low_pfn * PAGE_SIZE); set_max_mapnr(max_pfn); free_all_bootmem(); diff --git a/mm/Kconfig b/mm/Kconfig index 026771a9b097..394838f489eb 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -183,7 +183,7 @@ config MEMORY_HOTPLUG_SPARSE config MEMORY_HOTREMOVE bool "Allow for memory hot remove" select MEMORY_ISOLATION - select HAVE_BOOTMEM_INFO_NODE if X86_64 + select HAVE_BOOTMEM_INFO_NODE if (X86_64 || PPC64) depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE depends on MIGRATION -- cgit v1.2.3 From d9813c3681a36774b254c0cdc9cce53c9e22c756 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 1 Oct 2013 16:54:05 +1000 Subject: powerpc: Fix parameter clobber in csum_partial_copy_generic() The csum_partial_copy_generic() uses register r7 to adjust the remaining bytes to process. Unfortunately, r7 also holds a parameter, namely the address of the flag to set in case of access exceptions while reading the source buffer. Lacking a quantum implementation of PowerPC, this commit instead uses register r9 to do the adjusting, leaving r7's pointer uncorrupted. Signed-off-by: Paul E. McKenney Signed-off-by: Anton Blanchard Cc: stable@vger.kernel.org Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/lib/checksum_64.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/lib/checksum_64.S b/arch/powerpc/lib/checksum_64.S index 167f72555d60..609665aede75 100644 --- a/arch/powerpc/lib/checksum_64.S +++ b/arch/powerpc/lib/checksum_64.S @@ -269,8 +269,8 @@ _GLOBAL(csum_partial_copy_generic) rldicl. r6,r3,64-1,64-2 /* r6 = (r3 & 0x3) >> 1 */ beq .Lcopy_aligned - li r7,4 - sub r6,r7,r6 + li r9,4 + sub r6,r9,r6 mtctr r6 1: -- cgit v1.2.3 From 8f21bd0090052e740944f9397e2be5ac7957ded7 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 1 Oct 2013 17:11:35 +1000 Subject: powerpc: Restore registers on error exit from csum_partial_copy_generic() The csum_partial_copy_generic() function saves the PowerPC non-volatile r14, r15, and r16 registers for the main checksum-and-copy loop. Unfortunately, it fails to restore them upon error exit from this loop, which results in silent corruption of these registers in the presumably rare event of an access exception within that loop. This commit therefore restores these register on error exit from the loop. Signed-off-by: Paul E. McKenney Signed-off-by: Anton Blanchard Cc: stable@vger.kernel.org Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/lib/checksum_64.S | 54 +++++++++++++++++++++++++++++++----------- 1 file changed, 40 insertions(+), 14 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/lib/checksum_64.S b/arch/powerpc/lib/checksum_64.S index 609665aede75..57a072065057 100644 --- a/arch/powerpc/lib/checksum_64.S +++ b/arch/powerpc/lib/checksum_64.S @@ -226,19 +226,35 @@ _GLOBAL(csum_partial) blr - .macro source + .macro srcnr 100: .section __ex_table,"a" .align 3 - .llong 100b,.Lsrc_error + .llong 100b,.Lsrc_error_nr .previous .endm - .macro dest + .macro source +150: + .section __ex_table,"a" + .align 3 + .llong 150b,.Lsrc_error + .previous + .endm + + .macro dstnr 200: .section __ex_table,"a" .align 3 - .llong 200b,.Ldest_error + .llong 200b,.Ldest_error_nr + .previous + .endm + + .macro dest +250: + .section __ex_table,"a" + .align 3 + .llong 250b,.Ldest_error .previous .endm @@ -274,11 +290,11 @@ _GLOBAL(csum_partial_copy_generic) mtctr r6 1: -source; lhz r6,0(r3) /* align to doubleword */ +srcnr; lhz r6,0(r3) /* align to doubleword */ subi r5,r5,2 addi r3,r3,2 adde r0,r0,r6 -dest; sth r6,0(r4) +dstnr; sth r6,0(r4) addi r4,r4,2 bdnz 1b @@ -392,10 +408,10 @@ dest; std r16,56(r4) mtctr r6 3: -source; ld r6,0(r3) +srcnr; ld r6,0(r3) addi r3,r3,8 adde r0,r0,r6 -dest; std r6,0(r4) +dstnr; std r6,0(r4) addi r4,r4,8 bdnz 3b @@ -405,10 +421,10 @@ dest; std r6,0(r4) srdi. r6,r5,2 beq .Lcopy_tail_halfword -source; lwz r6,0(r3) +srcnr; lwz r6,0(r3) addi r3,r3,4 adde r0,r0,r6 -dest; stw r6,0(r4) +dstnr; stw r6,0(r4) addi r4,r4,4 subi r5,r5,4 @@ -416,10 +432,10 @@ dest; stw r6,0(r4) srdi. r6,r5,1 beq .Lcopy_tail_byte -source; lhz r6,0(r3) +srcnr; lhz r6,0(r3) addi r3,r3,2 adde r0,r0,r6 -dest; sth r6,0(r4) +dstnr; sth r6,0(r4) addi r4,r4,2 subi r5,r5,2 @@ -427,10 +443,10 @@ dest; sth r6,0(r4) andi. r6,r5,1 beq .Lcopy_finish -source; lbz r6,0(r3) +srcnr; lbz r6,0(r3) sldi r9,r6,8 /* Pad the byte out to 16 bits */ adde r0,r0,r9 -dest; stb r6,0(r4) +dstnr; stb r6,0(r4) .Lcopy_finish: addze r0,r0 /* add in final carry */ @@ -440,6 +456,11 @@ dest; stb r6,0(r4) blr .Lsrc_error: + ld r14,STK_REG(R14)(r1) + ld r15,STK_REG(R15)(r1) + ld r16,STK_REG(R16)(r1) + addi r1,r1,STACKFRAMESIZE +.Lsrc_error_nr: cmpdi 0,r7,0 beqlr li r6,-EFAULT @@ -447,6 +468,11 @@ dest; stb r6,0(r4) blr .Ldest_error: + ld r14,STK_REG(R14)(r1) + ld r15,STK_REG(R15)(r1) + ld r16,STK_REG(R16)(r1) + addi r1,r1,STACKFRAMESIZE +.Ldest_error_nr: cmpdi 0,r8,0 beqlr li r6,-EFAULT -- cgit v1.2.3 From d1211af3049f4c9c1d8d4eb8f8098cc4f4f0d0c7 Mon Sep 17 00:00:00 2001 From: Madhavan Srinivasan Date: Wed, 2 Oct 2013 00:34:10 +0530 Subject: powerpc/sysfs: Disable writing to PURR in guest mode arch/powerpc/kernel/sysfs.c exports PURR with write permission. This may be valid for kernel in phyp mode. But writing to the file in guest mode causes crash due to a priviledge violation Signed-off-by: Madhavan Srinivasan Signed-off-by: Benjamin Herrenschmidt CC: --- arch/powerpc/kernel/sysfs.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c index 27a90b99ef67..b4e667663d9b 100644 --- a/arch/powerpc/kernel/sysfs.c +++ b/arch/powerpc/kernel/sysfs.c @@ -17,6 +17,7 @@ #include #include #include +#include #include "cacheinfo.h" @@ -179,15 +180,25 @@ SYSFS_PMCSETUP(spurr, SPRN_SPURR); SYSFS_PMCSETUP(dscr, SPRN_DSCR); SYSFS_PMCSETUP(pir, SPRN_PIR); +/* + Lets only enable read for phyp resources and + enable write when needed with a separate function. + Lets be conservative and default to pseries. +*/ static DEVICE_ATTR(mmcra, 0600, show_mmcra, store_mmcra); static DEVICE_ATTR(spurr, 0400, show_spurr, NULL); static DEVICE_ATTR(dscr, 0600, show_dscr, store_dscr); -static DEVICE_ATTR(purr, 0600, show_purr, store_purr); +static DEVICE_ATTR(purr, 0400, show_purr, store_purr); static DEVICE_ATTR(pir, 0400, show_pir, NULL); unsigned long dscr_default = 0; EXPORT_SYMBOL(dscr_default); +static void add_write_permission_dev_attr(struct device_attribute *attr) +{ + attr->attr.mode |= 0200; +} + static ssize_t show_dscr_default(struct device *dev, struct device_attribute *attr, char *buf) { @@ -394,8 +405,11 @@ static void register_cpu_online(unsigned int cpu) if (cpu_has_feature(CPU_FTR_MMCRA)) device_create_file(s, &dev_attr_mmcra); - if (cpu_has_feature(CPU_FTR_PURR)) + if (cpu_has_feature(CPU_FTR_PURR)) { + if (!firmware_has_feature(FW_FEATURE_LPAR)) + add_write_permission_dev_attr(&dev_attr_purr); device_create_file(s, &dev_attr_purr); + } if (cpu_has_feature(CPU_FTR_SPURR)) device_create_file(s, &dev_attr_spurr); -- cgit v1.2.3 From 1cf389df090194a0976dc867b7fffe99d9d490cb Mon Sep 17 00:00:00 2001 From: Nishanth Aravamudan Date: Tue, 1 Oct 2013 14:04:53 -0700 Subject: powerpc/iommu: Use GFP_KERNEL instead of GFP_ATOMIC in iommu_init_table() Under heavy (DLPAR?) stress, we tripped this panic() in arch/powerpc/kernel/iommu.c::iommu_init_table(): page = alloc_pages_node(nid, GFP_ATOMIC, get_order(sz)); if (!page) panic("iommu_init_table: Can't allocate %ld bytes\n", sz); Before the panic() we got a page allocation failure for an order-2 allocation. There appears to be memory free, but perhaps not in the ATOMIC context. I looked through all the call-sites of iommu_init_table() and didn't see any obvious reason to need an ATOMIC allocation. Most call-sites in fact have an explicit GFP_KERNEL allocation shortly before the call to iommu_init_table(), indicating we are not in an atomic context. There is some indirection for some paths, but I didn't see any locks indicating that GFP_KERNEL is inappropriate. With this change under the same conditions, we have not been able to reproduce the panic. Signed-off-by: Nishanth Aravamudan Signed-off-by: Benjamin Herrenschmidt CC: --- arch/powerpc/kernel/iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index 0adab06ce5c0..572bb5b95f35 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -661,7 +661,7 @@ struct iommu_table *iommu_init_table(struct iommu_table *tbl, int nid) /* number of bytes needed for the bitmap */ sz = BITS_TO_LONGS(tbl->it_size) * sizeof(unsigned long); - page = alloc_pages_node(nid, GFP_ATOMIC, get_order(sz)); + page = alloc_pages_node(nid, GFP_KERNEL, get_order(sz)); if (!page) panic("iommu_init_table: Can't allocate %ld bytes\n", sz); tbl->it_map = page_address(page); -- cgit v1.2.3 From e82b89a6f19bae73fb064d1b3dd91fcefbb478f4 Mon Sep 17 00:00:00 2001 From: Prarit Bhargava Date: Mon, 23 Sep 2013 09:33:36 -0400 Subject: powerpc/vio: Fix modalias_show return values modalias_show() should return an empty string on error, not -ENODEV. This causes the following false and annoying error: > find /sys/devices -name modalias -print0 | xargs -0 cat >/dev/null cat: /sys/devices/vio/4000/modalias: No such device cat: /sys/devices/vio/4001/modalias: No such device cat: /sys/devices/vio/4002/modalias: No such device cat: /sys/devices/vio/4004/modalias: No such device cat: /sys/devices/vio/modalias: No such device Signed-off-by: Prarit Bhargava Signed-off-by: Benjamin Herrenschmidt CC: --- arch/powerpc/kernel/vio.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index 78a350670de3..d38cc08b16c7 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -1530,11 +1530,15 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, const char *cp; dn = dev->of_node; - if (!dn) - return -ENODEV; + if (!dn) { + strcat(buf, "\n"); + return strlen(buf); + } cp = of_get_property(dn, "compatible", NULL); - if (!cp) - return -ENODEV; + if (!cp) { + strcat(buf, "\n"); + return strlen(buf); + } return sprintf(buf, "vio:T%sS%s\n", vio_dev->type, cp); } -- cgit v1.2.3 From a53b27b3abeef406de92a2bb0ceb6fb4c3fb8fc4 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 2 Oct 2013 18:04:06 +1000 Subject: powerpc/perf: Fix handling of FAB events Commit 4df4899 "Add power8 EBB support" included a bug in the handling of the FAB_CRESP_MATCH and FAB_TYPE_MATCH fields. These values are pulled out of the event code using EVENT_THR_CTL_SHIFT, however we were then or'ing that value directly into MMCR1. This meant we were failing to set the FAB fields correctly, and also potentially corrupting the value for PMC4SEL. Leading to no counts for the FAB events and incorrect counts for PMC4. The fix is simply to shift left the FAB value correctly before or'ing it with MMCR1. Reported-by: Sooraj Ravindran Nair Signed-off-by: Michael Ellerman Cc: # 3.10+ Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/perf/power8-pmu.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/perf/power8-pmu.c b/arch/powerpc/perf/power8-pmu.c index 2ee4a707f0df..a3f7abd2f13f 100644 --- a/arch/powerpc/perf/power8-pmu.c +++ b/arch/powerpc/perf/power8-pmu.c @@ -199,6 +199,7 @@ #define MMCR1_UNIT_SHIFT(pmc) (60 - (4 * ((pmc) - 1))) #define MMCR1_COMBINE_SHIFT(pmc) (35 - ((pmc) - 1)) #define MMCR1_PMCSEL_SHIFT(pmc) (24 - (((pmc) - 1)) * 8) +#define MMCR1_FAB_SHIFT 36 #define MMCR1_DC_QUAL_SHIFT 47 #define MMCR1_IC_QUAL_SHIFT 46 @@ -388,8 +389,8 @@ static int power8_compute_mmcr(u64 event[], int n_ev, * the threshold bits are used for the match value. */ if (event_is_fab_match(event[i])) { - mmcr1 |= (event[i] >> EVENT_THR_CTL_SHIFT) & - EVENT_THR_CTL_MASK; + mmcr1 |= ((event[i] >> EVENT_THR_CTL_SHIFT) & + EVENT_THR_CTL_MASK) << MMCR1_FAB_SHIFT; } else { val = (event[i] >> EVENT_THR_CTL_SHIFT) & EVENT_THR_CTL_MASK; mmcra |= val << MMCRA_THR_CTL_SHIFT; -- cgit v1.2.3 From c69e63b0f135fa51d6e1c38b5ac8a1def15ea3fa Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Wed, 2 Oct 2013 17:15:15 +1000 Subject: powerpc/tm: Turn interrupts hard off in tm_reclaim() We can't take IRQs in tm_reclaim as we might have a bogus r13 and r1. This turns IRQs hard off in this function. Signed-off-by: Michael Neuling Cc: # 3.9+ Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/tm.S | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S index 7b60b9851469..8ece1908be1a 100644 --- a/arch/powerpc/kernel/tm.S +++ b/arch/powerpc/kernel/tm.S @@ -123,6 +123,7 @@ _GLOBAL(tm_reclaim) mr r15, r14 ori r15, r15, MSR_FP li r16, MSR_RI + ori r16, r16, MSR_EE /* IRQs hard off */ andc r15, r15, r16 oris r15, r15, MSR_VEC@h #ifdef CONFIG_VSX -- cgit v1.2.3 From e9bdc3d6143d1c4b8d8ce5231fc958268331f983 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Thu, 26 Sep 2013 13:29:09 +1000 Subject: powerpc/tm: Switch out userspace PPR and DSCR sooner When we do a treclaim or trecheckpoint we end up running with userspace PPR and DSCR values. Currently we don't do anything special to avoid running with user values which could cause a severe performance degradation. This patch moves the PPR and DSCR save and restore around treclaim and trecheckpoint so that we run with user values for a much shorter period. More care is taken with the PPR as it's impact is greater than the DSCR. This is similar to user exceptions, where we run HTM_MEDIUM early to ensure that we don't run with a userspace PPR values in the kernel. Signed-off-by: Michael Neuling Cc: # 3.9+ Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/tm.S | 94 ++++++++++++++++++++++++++++++++---------------- 1 file changed, 63 insertions(+), 31 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S index 8ece1908be1a..cd809eaa8b5c 100644 --- a/arch/powerpc/kernel/tm.S +++ b/arch/powerpc/kernel/tm.S @@ -79,6 +79,11 @@ _GLOBAL(tm_abort) TABORT(R3) blr + .section ".toc","aw" +DSCR_DEFAULT: + .tc dscr_default[TC],dscr_default + + .section ".text" /* void tm_reclaim(struct thread_struct *thread, * unsigned long orig_msr, @@ -188,11 +193,18 @@ dont_backup_fp: std r1, PACATMSCRATCH(r13) ld r1, PACAR1(r13) + /* Store the PPR in r11 and reset to decent value */ + std r11, GPR11(r1) /* Temporary stash */ + mfspr r11, SPRN_PPR + HMT_MEDIUM + /* Now get some more GPRS free */ std r7, GPR7(r1) /* Temporary stash */ std r12, GPR12(r1) /* '' '' '' */ ld r12, STACK_PARAM(0)(r1) /* Param 0, thread_struct * */ + std r11, THREAD_TM_PPR(r12) /* Store PPR and free r11 */ + addi r7, r12, PT_CKPT_REGS /* Thread's ckpt_regs */ /* Make r7 look like an exception frame so that we @@ -204,15 +216,19 @@ dont_backup_fp: SAVE_GPR(0, r7) /* user r0 */ SAVE_GPR(2, r7) /* user r2 */ SAVE_4GPRS(3, r7) /* user r3-r6 */ - SAVE_4GPRS(8, r7) /* user r8-r11 */ + SAVE_GPR(8, r7) /* user r8 */ + SAVE_GPR(9, r7) /* user r9 */ + SAVE_GPR(10, r7) /* user r10 */ ld r3, PACATMSCRATCH(r13) /* user r1 */ ld r4, GPR7(r1) /* user r7 */ - ld r5, GPR12(r1) /* user r12 */ - GET_SCRATCH0(6) /* user r13 */ + ld r5, GPR11(r1) /* user r11 */ + ld r6, GPR12(r1) /* user r12 */ + GET_SCRATCH0(8) /* user r13 */ std r3, GPR1(r7) std r4, GPR7(r7) - std r5, GPR12(r7) - std r6, GPR13(r7) + std r5, GPR11(r7) + std r6, GPR12(r7) + std r8, GPR13(r7) SAVE_NVGPRS(r7) /* user r14-r31 */ @@ -235,14 +251,12 @@ dont_backup_fp: std r6, _XER(r7) - /* ******************** TAR, PPR, DSCR ********** */ + /* ******************** TAR, DSCR ********** */ mfspr r3, SPRN_TAR - mfspr r4, SPRN_PPR - mfspr r5, SPRN_DSCR + mfspr r4, SPRN_DSCR std r3, THREAD_TM_TAR(r12) - std r4, THREAD_TM_PPR(r12) - std r5, THREAD_TM_DSCR(r12) + std r4, THREAD_TM_DSCR(r12) /* MSR and flags: We don't change CRs, and we don't need to alter * MSR. @@ -259,7 +273,7 @@ dont_backup_fp: std r3, THREAD_TM_TFHAR(r12) std r4, THREAD_TM_TFIAR(r12) - /* AMR and PPR are checkpointed too, but are unsupported by Linux. */ + /* AMR is checkpointed too, but is unsupported by Linux. */ /* Restore original MSR/IRQ state & clear TM mode */ ld r14, TM_FRAME_L0(r1) /* Orig MSR */ @@ -275,6 +289,12 @@ dont_backup_fp: mtcr r4 mtlr r0 ld r2, 40(r1) + + /* Load system default DSCR */ + ld r4, DSCR_DEFAULT@toc(r2) + ld r0, 0(r4) + mtspr SPRN_DSCR, r0 + blr @@ -359,25 +379,24 @@ dont_restore_fp: restore_gprs: - /* ******************** TAR, PPR, DSCR ********** */ - ld r4, THREAD_TM_TAR(r3) - ld r5, THREAD_TM_PPR(r3) - ld r6, THREAD_TM_DSCR(r3) + /* ******************** CR,LR,CCR,MSR ********** */ + ld r4, _CTR(r7) + ld r5, _LINK(r7) + ld r6, _CCR(r7) + ld r8, _XER(r7) - mtspr SPRN_TAR, r4 - mtspr SPRN_PPR, r5 - mtspr SPRN_DSCR, r6 + mtctr r4 + mtlr r5 + mtcr r6 + mtxer r8 - /* ******************** CR,LR,CCR,MSR ********** */ - ld r3, _CTR(r7) - ld r4, _LINK(r7) - ld r5, _CCR(r7) - ld r6, _XER(r7) + /* ******************** TAR ******************** */ + ld r4, THREAD_TM_TAR(r3) + mtspr SPRN_TAR, r4 - mtctr r3 - mtlr r4 - mtcr r5 - mtxer r6 + /* Load up the PPR and DSCR in GPRs only at this stage */ + ld r5, THREAD_TM_DSCR(r3) + ld r6, THREAD_TM_PPR(r3) /* Clear the MSR RI since we are about to change R1. EE is already off */ @@ -385,19 +404,26 @@ restore_gprs: mtmsrd r4, 1 REST_4GPRS(0, r7) /* GPR0-3 */ - REST_GPR(4, r7) /* GPR4-6 */ - REST_GPR(5, r7) - REST_GPR(6, r7) + REST_GPR(4, r7) /* GPR4 */ REST_4GPRS(8, r7) /* GPR8-11 */ REST_2GPRS(12, r7) /* GPR12-13 */ REST_NVGPRS(r7) /* GPR14-31 */ - ld r7, GPR7(r7) /* GPR7 */ + /* Load up PPR and DSCR here so we don't run with user values for long + */ + mtspr SPRN_DSCR, r5 + mtspr SPRN_PPR, r6 + + REST_GPR(5, r7) /* GPR5-7 */ + REST_GPR(6, r7) + ld r7, GPR7(r7) /* Commit register state as checkpointed state: */ TRECHKPT + HMT_MEDIUM + /* Our transactional state has now changed. * * Now just get out of here. Transactional (current) state will be @@ -420,6 +446,12 @@ restore_gprs: mtcr r4 mtlr r0 ld r2, 40(r1) + + /* Load system default DSCR */ + ld r4, DSCR_DEFAULT@toc(r2) + ld r0, 0(r4) + mtspr SPRN_DSCR, r0 + blr /* ****************************************************************** */ -- cgit v1.2.3 From d0cdef6e87ebc1241d7e407d5e1b14e6bb836ae9 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Wed, 25 Sep 2013 23:26:24 +0100 Subject: ARM: 7842/1: MCPM: don't explode if invoked without being initialized first Currently mcpm_cpu_power_down() and mcpm_cpu_suspend() trigger BUG() if mcpm_platform_register() is not called beforehand. This may occur for many reasons such as some incomplete device tree passed to the kernel or the like. Let's be nicer to users and avoid killing the kernel if that happens by logging a warning and returning to the caller. The mcpm_cpu_suspend() user is already set to deal with this situation, and so is cpu_die() invoking mcpm_cpu_die(). The problematic case would have been the B.L switcher's usage of mcpm_cpu_power_down(), however it has to call mcpm_cpu_power_up() first which is already set to catch an error resulting from a missing mcpm_platform_register() call. Signed-off-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/common/mcpm_entry.c | 6 ++++-- arch/arm/include/asm/mcpm.h | 14 ++++++++++---- 2 files changed, 14 insertions(+), 6 deletions(-) (limited to 'arch') diff --git a/arch/arm/common/mcpm_entry.c b/arch/arm/common/mcpm_entry.c index 370236dd1a03..990250965f2c 100644 --- a/arch/arm/common/mcpm_entry.c +++ b/arch/arm/common/mcpm_entry.c @@ -51,7 +51,8 @@ void mcpm_cpu_power_down(void) { phys_reset_t phys_reset; - BUG_ON(!platform_ops); + if (WARN_ON_ONCE(!platform_ops || !platform_ops->power_down)) + return; BUG_ON(!irqs_disabled()); /* @@ -93,7 +94,8 @@ void mcpm_cpu_suspend(u64 expected_residency) { phys_reset_t phys_reset; - BUG_ON(!platform_ops); + if (WARN_ON_ONCE(!platform_ops || !platform_ops->suspend)) + return; BUG_ON(!irqs_disabled()); /* Very similar to mcpm_cpu_power_down() */ diff --git a/arch/arm/include/asm/mcpm.h b/arch/arm/include/asm/mcpm.h index 0f7b7620e9a5..fc82a88f5b69 100644 --- a/arch/arm/include/asm/mcpm.h +++ b/arch/arm/include/asm/mcpm.h @@ -76,8 +76,11 @@ int mcpm_cpu_power_up(unsigned int cpu, unsigned int cluster); * * This must be called with interrupts disabled. * - * This does not return. Re-entry in the kernel is expected via - * mcpm_entry_point. + * On success this does not return. Re-entry in the kernel is expected + * via mcpm_entry_point. + * + * This will return if mcpm_platform_register() has not been called + * previously in which case the caller should take appropriate action. */ void mcpm_cpu_power_down(void); @@ -98,8 +101,11 @@ void mcpm_cpu_power_down(void); * * This must be called with interrupts disabled. * - * This does not return. Re-entry in the kernel is expected via - * mcpm_entry_point. + * On success this does not return. Re-entry in the kernel is expected + * via mcpm_entry_point. + * + * This will return if mcpm_platform_register() has not been called + * previously in which case the caller should take appropriate action. */ void mcpm_cpu_suspend(u64 expected_residency); -- cgit v1.2.3 From 262576fffe425ee7768f2686ad5536907d828764 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Thu, 26 Sep 2013 15:07:23 +0100 Subject: ARM: 7843/1: drop asm/types.h from generic-y Commit 09096f6 (ARM: 7822/1: add workaround for ambiguous C99 stdint.h types) introduced an ARM specific 'asm/types.h' to work around some ambiguities in the definitions of 32 bit types. Hence, we will not be needing the generic version anymore. Signed-off-by: Ard Biesheuvel Signed-off-by: Russell King --- arch/arm/include/asm/Kbuild | 1 - 1 file changed, 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild index d3db39860b9c..59ceae8f3c95 100644 --- a/arch/arm/include/asm/Kbuild +++ b/arch/arm/include/asm/Kbuild @@ -31,5 +31,4 @@ generic-y += termbits.h generic-y += termios.h generic-y += timex.h generic-y += trace_clock.h -generic-y += types.h generic-y += unaligned.h -- cgit v1.2.3 From 856337283a215b9f92189f22862e4415f4d6bd85 Mon Sep 17 00:00:00 2001 From: Andrea Adami Date: Thu, 26 Sep 2013 23:23:02 +0100 Subject: ARM: 7845/1: sharpsl_param.c: fix invalid memory access for pxa devices This fixes a regression for kernels after v3.2 After commit 72662e01088394577be4a3f14da94cf87bea2591 ARM: head.S: only include __turn_mmu_on in the initial identity mapping Zaurus PXA devices call sharpsl_save_param() during fixup and hang on boot because memcpy refers to physical addresses no longer valid if the MMU is setup. Zaurus collie (SA1100) is unaffected (function is called in init_machine). The code was making assumptions and for PXA the virtual address should have been used before. Signed-off-by: Marko Katic Signed-off-by: Andrea Adami Signed-off-by: Russell King --- arch/arm/common/sharpsl_param.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/common/sharpsl_param.c b/arch/arm/common/sharpsl_param.c index d56c932580eb..025f6ce38596 100644 --- a/arch/arm/common/sharpsl_param.c +++ b/arch/arm/common/sharpsl_param.c @@ -15,6 +15,7 @@ #include #include #include +#include /* * Certain hardware parameters determined at the time of device manufacture, @@ -25,8 +26,10 @@ */ #ifdef CONFIG_ARCH_SA1100 #define PARAM_BASE 0xe8ffc000 +#define param_start(x) (void *)(x) #else #define PARAM_BASE 0xa0000a00 +#define param_start(x) __va(x) #endif #define MAGIC_CHG(a,b,c,d) ( ( d << 24 ) | ( c << 16 ) | ( b << 8 ) | a ) @@ -41,7 +44,7 @@ EXPORT_SYMBOL(sharpsl_param); void sharpsl_save_param(void) { - memcpy(&sharpsl_param, (void *)PARAM_BASE, sizeof(struct sharpsl_param_info)); + memcpy(&sharpsl_param, param_start(PARAM_BASE), sizeof(struct sharpsl_param_info)); if (sharpsl_param.comadj_keyword != COMADJ_MAGIC) sharpsl_param.comadj=-1; -- cgit v1.2.3 From bc41b8724f24b9a27d1dcc6c974b8f686b38d554 Mon Sep 17 00:00:00 2001 From: Santosh Shilimkar Date: Fri, 27 Sep 2013 21:56:31 +0100 Subject: ARM: 7846/1: Update SMP_ON_UP code to detect A9MPCore with 1 CPU devices The generic code is well equipped to differentiate between SMP and UP configurations.However, there are some devices which use Cortex-A9 MP core IP with 1 CPU as configuration. To let these SOCs to co-exist in a CONFIG_SMP=y build by leveraging the SMP_ON_UP support, we need to additionally check the number the cores in Cortex-A9 MPCore configuration. Without such a check in place, the startup code tries to execute ALT_SMP() set of instructions which lead to CPU faults. The issue was spotted on TI's Aegis device and this patch makes now the device work with omap2plus_defconfig which enables SMP by default. The change is kept limited to only Cortex-A9 MPCore detection code. Note that if any future SoC *does* use 0x0 as the PERIPH_BASE, then the SCU address check code needs to be #ifdef'd for for the Aegis platform. Acked-by: Sricharan R Signed-off-by: Vaibhav Bedia Signed-off-by: Santosh Shilimkar Signed-off-by: Russell King --- arch/arm/kernel/head.S | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 2c7cc1e03473..476de57dcef2 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -487,7 +487,26 @@ __fixup_smp: mrc p15, 0, r0, c0, c0, 5 @ read MPIDR and r0, r0, #0xc0000000 @ multiprocessing extensions and teq r0, #0x80000000 @ not part of a uniprocessor system? - moveq pc, lr @ yes, assume SMP + bne __fixup_smp_on_up @ no, assume UP + + @ Core indicates it is SMP. Check for Aegis SOC where a single + @ Cortex-A9 CPU is present but SMP operations fault. + mov r4, #0x41000000 + orr r4, r4, #0x0000c000 + orr r4, r4, #0x00000090 + teq r3, r4 @ Check for ARM Cortex-A9 + movne pc, lr @ Not ARM Cortex-A9, + + @ If a future SoC *does* use 0x0 as the PERIPH_BASE, then the + @ below address check will need to be #ifdef'd or equivalent + @ for the Aegis platform. + mrc p15, 4, r0, c15, c0 @ get SCU base address + teq r0, #0x0 @ '0' on actual UP A9 hardware + beq __fixup_smp_on_up @ So its an A9 UP + ldr r0, [r0, #4] @ read SCU Config + and r0, r0, #0x3 @ number of CPUs + teq r0, #0x0 @ is 1? + movne pc, lr __fixup_smp_on_up: adr r0, 1f -- cgit v1.2.3 From 1dc1c33879bf47500565e627506f3d4e150e1cae Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Fri, 20 Sep 2013 23:01:06 +0300 Subject: ARM: OMAP2: gpmc-onenand: fix sync mode setup with DT With DT-based boot, the GPMC OneNAND sync mode setup does not work correctly. During the async mode setup, sync flags gets incorrectly set in the onenand_async data and the system crashes during the async setup. Also, the sync mode never gets set in gpmc_onenand_data->flags, so even without the crash, the actual sync mode setup would never be called. The patch fixes this by adjusting the gpmc_onenand_data->flags when the data is read from the DT. Also while doing this we force the onenand_async to be always async. The patch enables to use the following DTS chunk (that should correspond the arch/arm/mach-omap2/board-rm680.c board file setup) with Nokia N950, which currently crashes with 3.12-rc1. The crash output can be also found below. &gpmc { ranges = <0 0 0x04000000 0x20000000>; onenand@0,0 { #address-cells = <1>; #size-cells = <1>; reg = <0 0 0x20000000>; gpmc,sync-read; gpmc,sync-write; gpmc,burst-length = <16>; gpmc,burst-read; gpmc,burst-wrap; gpmc,burst-write; gpmc,device-width = <2>; gpmc,mux-add-data = <2>; gpmc,cs-on-ns = <0>; gpmc,cs-rd-off-ns = <87>; gpmc,cs-wr-off-ns = <87>; gpmc,adv-on-ns = <0>; gpmc,adv-rd-off-ns = <10>; gpmc,adv-wr-off-ns = <10>; gpmc,oe-on-ns = <15>; gpmc,oe-off-ns = <87>; gpmc,we-on-ns = <0>; gpmc,we-off-ns = <87>; gpmc,rd-cycle-ns = <112>; gpmc,wr-cycle-ns = <112>; gpmc,access-ns = <81>; gpmc,page-burst-access-ns = <15>; gpmc,bus-turnaround-ns = <0>; gpmc,cycle2cycle-delay-ns = <0>; gpmc,wait-monitoring-ns = <0>; gpmc,clk-activation-ns = <5>; gpmc,wr-data-mux-bus-ns = <30>; gpmc,wr-access-ns = <81>; gpmc,sync-clk-ps = <15000>; }; }; [ 1.467559] GPMC CS0: cs_on : 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.474822] GPMC CS0: cs_rd_off : 1 ticks, 5 ns (was 24 ticks) 5 ns [ 1.482116] GPMC CS0: cs_wr_off : 14 ticks, 71 ns (was 24 ticks) 71 ns [ 1.489349] GPMC CS0: adv_on : 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.496582] GPMC CS0: adv_rd_off: 3 ticks, 15 ns (was 3 ticks) 15 ns [ 1.503845] GPMC CS0: adv_wr_off: 3 ticks, 15 ns (was 3 ticks) 15 ns [ 1.511077] GPMC CS0: oe_on : 3 ticks, 15 ns (was 4 ticks) 15 ns [ 1.518310] GPMC CS0: oe_off : 1 ticks, 5 ns (was 24 ticks) 5 ns [ 1.525543] GPMC CS0: we_on : 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.532806] GPMC CS0: we_off : 8 ticks, 40 ns (was 24 ticks) 40 ns [ 1.540039] GPMC CS0: rd_cycle : 4 ticks, 20 ns (was 29 ticks) 20 ns [ 1.547302] GPMC CS0: wr_cycle : 4 ticks, 20 ns (was 29 ticks) 20 ns [ 1.554504] GPMC CS0: access : 0 ticks, 0 ns (was 23 ticks) 0 ns [ 1.561767] GPMC CS0: page_burst_access: 0 ticks, 0 ns (was 3 ticks) 0 ns [ 1.569641] GPMC CS0: bus_turnaround: 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.577270] GPMC CS0: cycle2cycle_delay: 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.585144] GPMC CS0: wait_monitoring: 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.592834] GPMC CS0: clk_activation: 0 ticks, 0 ns (was 0 ticks) 0 ns [ 1.600463] GPMC CS0: wr_data_mux_bus: 5 ticks, 25 ns (was 8 ticks) 25 ns [ 1.608154] GPMC CS0: wr_access : 0 ticks, 0 ns (was 23 ticks) 0 ns [ 1.615386] GPMC CS0 CLK period is 5 ns (div 1) [ 1.625122] Unhandled fault: external abort on non-linefetch (0x1008) at 0xf009e442 [ 1.633178] Internal error: : 1008 [#1] ARM [ 1.637573] Modules linked in: [ 1.640777] CPU: 0 PID: 1 Comm: swapper Not tainted 3.12.0-rc1-n9xx-los.git-5318619-00006-g4baa700-dirty #26 [ 1.651123] task: ef04c000 ti: ef050000 task.ti: ef050000 [ 1.656799] PC is at gpmc_onenand_setup+0x98/0x1e0 [ 1.661865] LR is at gpmc_cs_set_timings+0x494/0x5a4 [ 1.667083] pc : [] lr : [] psr: 60000113 [ 1.667083] sp : ef051d10 ip : ef051ce0 fp : ef051d94 [ 1.679138] r10: c0caaf60 r9 : ef050000 r8 : ef18b32c [ 1.684631] r7 : f0080000 r6 : c0caaf60 r5 : 00000000 r4 : f009e400 [ 1.691497] r3 : f009e442 r2 : 80050000 r1 : 00000014 r0 : 00000000 [ 1.698333] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 1.706024] Control: 10c5387d Table: af290019 DAC: 00000015 [ 1.712066] Process swapper (pid: 1, stack limit = 0xef050240) [ 1.718200] Stack: (0xef051d10 to 0xef052000) [ 1.722778] 1d00: 00004000 00001402 00000000 00000005 [ 1.731384] 1d20: 00000047 00000000 0000000f 0000000f 00000000 00000028 0000000f 00000005 [ 1.739990] 1d40: 00000000 00000000 00000014 00000014 00000000 00000000 00000000 00000000 [ 1.748596] 1d60: 00000000 00000019 00000000 00000000 ef18b000 ef099c50 c0c8cb30 00000000 [ 1.757171] 1d80: c0488074 c048f868 ef051dcc ef051d98 c024447c c002dfb4 00000000 c048f868 [ 1.765777] 1da0: 00000000 00000000 c010e4a4 c0dbbb7c c0c8cb40 00000000 c0ca2500 c0488074 [ 1.774383] 1dc0: ef051ddc ef051dd0 c01fd508 c0244370 ef051dfc ef051de0 c01fc204 c01fd4f4 [ 1.782989] 1de0: c0c8cb40 c0ca2500 c0c8cb74 00000000 ef051e1c ef051e00 c01fc3b0 c01fc104 [ 1.791595] 1e00: ef0983bc 00000000 c0ca2500 c01fc31c ef051e44 ef051e20 c01fa794 c01fc328 [ 1.800201] 1e20: ef03634c ef0983b0 ef27d534 c0ca2500 ef27d500 c0c9a2f8 ef051e54 ef051e48 [ 1.808807] 1e40: c01fbcfc c01fa744 ef051e84 ef051e58 c01fb838 c01fbce4 c0411df8 c0caa040 [ 1.817413] 1e60: ef051e84 c0ca2500 00000006 c0caa040 00000066 c0488074 ef051e9c ef051e88 [ 1.825988] 1e80: c01fca30 c01fb768 c04975b8 00000006 ef051eac ef051ea0 c01fd728 c01fc9bc [ 1.834594] 1ea0: ef051ebc ef051eb0 c048808c c01fd6e4 ef051f4c ef051ec0 c0008888 c0488080 [ 1.843200] 1ec0: 0000006f c046bae8 00000000 00000000 ef051efc ef051ee0 ef051f04 ef051ee8 [ 1.851806] 1ee0: c046d400 c0181218 c046d410 c18da8d5 c036a8e4 00000066 ef051f4c ef051f08 [ 1.860412] 1f00: c004b9a8 c046d41c c048f840 00000006 00000006 c046b488 00000000 c043ec08 [ 1.869018] 1f20: ef051f4c c04975b8 00000006 c0caa040 00000066 c046d410 c048f85c c048f868 [ 1.877593] 1f40: ef051f94 ef051f50 c046db8c c00087a0 00000006 00000006 c046d410 ffffffff [ 1.886199] 1f60: ffffffff ffffffff ffffffff 00000000 c0348fd0 00000000 00000000 00000000 [ 1.894805] 1f80: 00000000 00000000 ef051fac ef051f98 c0348fe0 c046daa8 00000000 00000000 [ 1.903411] 1fa0: 00000000 ef051fb0 c000e7f8 c0348fdc 00000000 00000000 00000000 00000000 [ 1.912017] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 1.920623] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 ffffffff ffffffff [ 1.929199] Backtrace: [ 1.931793] [] (gpmc_onenand_setup+0x0/0x1e0) from [] (omap2_onenand_probe+0x118/0x49c) [ 1.942047] [] (omap2_onenand_probe+0x0/0x49c) from [] (platform_drv_probe+0x20/0x24) [ 1.952117] r8:c0488074 r7:c0ca2500 r6:00000000 r5:c0c8cb40 r4:c0dbbb7c [ 1.959197] [] (platform_drv_probe+0x0/0x24) from [] (driver_probe_device+0x10c/0x224) [ 1.969360] [] (driver_probe_device+0x0/0x224) from [] (__driver_attach+0x94/0x98) [ 1.979125] r7:00000000 r6:c0c8cb74 r5:c0ca2500 r4:c0c8cb40 [ 1.985107] [] (__driver_attach+0x0/0x98) from [] (bus_for_each_dev+0x5c/0x90) [ 1.994506] r6:c01fc31c r5:c0ca2500 r4:00000000 r3:ef0983bc [ 2.000488] [] (bus_for_each_dev+0x0/0x90) from [] (driver_attach+0x24/0x28) [ 2.009735] r6:c0c9a2f8 r5:ef27d500 r4:c0ca2500 [ 2.014587] [] (driver_attach+0x0/0x28) from [] (bus_add_driver+0xdc/0x260) [ 2.023742] [] (bus_add_driver+0x0/0x260) from [] (driver_register+0x80/0xfc) [ 2.033081] r8:c0488074 r7:00000066 r6:c0caa040 r5:00000006 r4:c0ca2500 [ 2.040161] [] (driver_register+0x0/0xfc) from [] (__platform_driver_register+0x50/0x64) [ 2.050476] r5:00000006 r4:c04975b8 [ 2.054260] [] (__platform_driver_register+0x0/0x64) from [] (omap2_onenand_driver_init+0x18/0x20) [ 2.065490] [] (omap2_onenand_driver_init+0x0/0x20) from [] (do_one_initcall+0xf4/0x150) [ 2.075836] [] (do_one_initcall+0x0/0x150) from [] (kernel_init_freeable+0xf0/0x1b4) [ 2.085815] [] (kernel_init_freeable+0x0/0x1b4) from [] (kernel_init+0x10/0xec) [ 2.095336] [] (kernel_init+0x0/0xec) from [] (ret_from_fork+0x14/0x3c) [ 2.104125] r4:00000000 r3:00000000 [ 2.107879] Code: ebffc3ae e2505000 ba00002e e2843042 (e1d320b0) [ 2.114318] ---[ end trace b8ee3e3e5e002451 ]--- Signed-off-by: Aaro Koskinen Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/gpmc-onenand.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/mach-omap2/gpmc-onenand.c b/arch/arm/mach-omap2/gpmc-onenand.c index 64b5a8346982..8b6876c98ce1 100644 --- a/arch/arm/mach-omap2/gpmc-onenand.c +++ b/arch/arm/mach-omap2/gpmc-onenand.c @@ -272,9 +272,19 @@ static int omap2_onenand_setup_async(void __iomem *onenand_base) struct gpmc_timings t; int ret; - if (gpmc_onenand_data->of_node) + if (gpmc_onenand_data->of_node) { gpmc_read_settings_dt(gpmc_onenand_data->of_node, &onenand_async); + if (onenand_async.sync_read || onenand_async.sync_write) { + if (onenand_async.sync_write) + gpmc_onenand_data->flags |= + ONENAND_SYNC_READWRITE; + else + gpmc_onenand_data->flags |= ONENAND_SYNC_READ; + onenand_async.sync_read = false; + onenand_async.sync_write = false; + } + } omap2_onenand_set_async_mode(onenand_base); -- cgit v1.2.3 From d8b11a0cbd1c66ce283eb9dabe0498dfa6483f32 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 3 Oct 2013 16:00:14 +0200 Subject: perf/x86: Clean up cap_user_time* setting Currently the cap_user_time_zero capability has different tests than cap_user_time; even though they expose the exact same data. Switch from CONSTANT && NONSTOP to sched_clock_stable to also deal with multi cabinet machines and drop the tsc_disabled() check.. non of this will work sanely without tsc anyway. Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-nmgn0j0muo1r4c94vlfh23xy@git.kernel.org Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 897783b3302a..9d8449158cf9 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -1888,10 +1888,7 @@ void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now) userpg->cap_user_rdpmc = x86_pmu.attr_rdpmc; userpg->pmc_width = x86_pmu.cntval_bits; - if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC)) - return; - - if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC)) + if (!sched_clock_stable) return; userpg->cap_user_time = 1; @@ -1899,10 +1896,8 @@ void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now) userpg->time_shift = CYC2NS_SCALE_FACTOR; userpg->time_offset = this_cpu_read(cyc2ns_offset) - now; - if (sched_clock_stable && !check_tsc_disabled()) { - userpg->cap_user_time_zero = 1; - userpg->time_zero = this_cpu_read(cyc2ns_offset); - } + userpg->cap_user_time_zero = 1; + userpg->time_zero = this_cpu_read(cyc2ns_offset); } /* -- cgit v1.2.3 From 0dbc6078c06bc002bfacf95f33960b1901c663f5 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Thu, 3 Oct 2013 11:59:14 +0200 Subject: x86, build, pci: Fix PCI_MSI build on !SMP Commit ebd97be635 ('PCI: remove ARCH_SUPPORTS_MSI kconfig option') removed the ARCH_SUPPORTS_MSI option which architectures could select to indicate that they support MSI. Now, all architectures are supposed to build fine when MSI support is enabled: instead of having the architecture tell *when* MSI support can be used, it's up to the architecture code to ensure that MSI support can be enabled. On x86, commit ebd97be635 removed the following line: select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC) Which meant that MSI support was only available when the local APIC and I/O APIC were enabled. While this is always true on SMP or x86-64, it is not necessarily the case on i386 !SMP. The below patch makes sure that the local APIC and I/O APIC support is always enabled when MSI support is enabled. To do so, it: * Ensures the X86_UP_APIC option is not visible when PCI_MSI is enabled. This is the option that allows, on UP machines, to enable or not the APIC support. It is already not visible on SMP systems, or x86-64 systems, for example. We're simply also making it invisible on i386 MSI systems. * Ensures that the X86_LOCAL_APIC and X86_IO_APIC options are 'y' when PCI_MSI is enabled. Notice that this change requires a change in drivers/iommu/Kconfig to avoid a recursive Kconfig dependencey. The AMD_IOMMU option selects PCI_MSI, but was depending on X86_IO_APIC. This dependency is no longer needed: as soon as PCI_MSI is selected, the presence of X86_IO_APIC is guaranteed. Moreover, the AMD_IOMMU already depended on X86_64, which already guaranteed that X86_IO_APIC was enabled, so this dependency was anyway redundant. Signed-off-by: Thomas Petazzoni Link: http://lkml.kernel.org/r/1380794354-9079-1-git-send-email-thomas.petazzoni@free-electrons.com Reported-by: Konrad Rzeszutek Wilk Acked-by: Bjorn Helgaas Signed-off-by: H. Peter Anvin --- arch/x86/Kconfig | 6 +++--- drivers/iommu/Kconfig | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index ee2fb9d37745..145d703227bf 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -860,7 +860,7 @@ source "kernel/Kconfig.preempt" config X86_UP_APIC bool "Local APIC support on uniprocessors" - depends on X86_32 && !SMP && !X86_32_NON_STANDARD + depends on X86_32 && !SMP && !X86_32_NON_STANDARD && !PCI_MSI ---help--- A local APIC (Advanced Programmable Interrupt Controller) is an integrated interrupt controller in the CPU. If you have a single-CPU @@ -885,11 +885,11 @@ config X86_UP_IOAPIC config X86_LOCAL_APIC def_bool y - depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_APIC + depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_APIC || PCI_MSI config X86_IO_APIC def_bool y - depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_IOAPIC + depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_IOAPIC || PCI_MSI config X86_VISWS_APIC def_bool y diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index fe302e33f72e..c880ebaf1553 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -52,7 +52,7 @@ config AMD_IOMMU select PCI_PRI select PCI_PASID select IOMMU_API - depends on X86_64 && PCI && ACPI && X86_IO_APIC + depends on X86_64 && PCI && ACPI ---help--- With this option you can enable support for AMD IOMMU hardware in your system. An IOMMU is a hardware component which provides -- cgit v1.2.3 From 67d470e0e1711ca4a4c3a0e5524e0d580654053e Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Fri, 4 Oct 2013 16:14:30 -0600 Subject: Revert "x86/PCI: MMCONFIG: Check earlier for MMCONFIG region at address zero" This reverts commit 07f9b61c3915e8eb156cb4461b3946736356ad02. 07f9b61c was intended to be a cleanup that didn't change anything, but in fact, for systems without _CBA (which is almost everything), it broke extended config space for domain 0 and all config space for other domains. Reference: http://lkml.kernel.org/r/20131004011806.GE20450@dangermouse.emea.sgi.com Reported-by: Hedi Berriche Signed-off-by: Bjorn Helgaas --- arch/x86/pci/mmconfig-shared.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c index 5596c7bdd327..082e88129712 100644 --- a/arch/x86/pci/mmconfig-shared.c +++ b/arch/x86/pci/mmconfig-shared.c @@ -700,7 +700,7 @@ int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end, if (!(pci_probe & PCI_PROBE_MMCONF) || pci_mmcfg_arch_init_failed) return -ENODEV; - if (start > end || !addr) + if (start > end) return -EINVAL; mutex_lock(&pci_mmcfg_lock); @@ -716,6 +716,11 @@ int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end, return -EEXIST; } + if (!addr) { + mutex_unlock(&pci_mmcfg_lock); + return -EINVAL; + } + rc = -EBUSY; cfg = pci_mmconfig_alloc(seg, start, end, addr); if (cfg == NULL) { -- cgit v1.2.3 From 8412da757776727796e9edd64ba94814cc08d536 Mon Sep 17 00:00:00 2001 From: Ville Syrjälä Date: Fri, 4 Oct 2013 15:16:04 +0300 Subject: x86/reboot: Add reboot quirk for Dell Latitude E5410 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Dell Latitude E5410 needs reboot=pci to actually reboot. Signed-off-by: Ville Syrjälä Link: http://lkml.kernel.org/r/1380888964-14517-1-git-send-email-ville.syrjala@linux.intel.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/reboot.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch') diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index e643e744e4d8..7e920bff99a3 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -326,6 +326,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6320"), }, }, + { /* Handle problems with rebooting on the Latitude E5410. */ + .callback = set_pci_reboot, + .ident = "Dell Latitude E5410", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E5410"), + }, + }, { /* Handle problems with rebooting on the Latitude E5420. */ .callback = set_pci_reboot, .ident = "Dell Latitude E5420", -- cgit v1.2.3 From 8b3c569a3999a8fd5a819f892525ab5520777c92 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Mon, 7 Oct 2013 12:14:26 +0100 Subject: MIPS: stack protector: Fix per-task canary switch Commit 1400eb6 (MIPS: r4k,octeon,r2300: stack protector: change canary per task) was merged in v3.11 and introduced assembly in the MIPS resume functions to update the value of the current canary in __stack_chk_guard. However it used PTR_L resulting in a load of the canary value, instead of PTR_LA to construct its address. The value is intended to be random but is then treated as an address in the subsequent LONG_S (store). This was observed to cause a fault and panic: CPU 0 Unable to handle kernel paging request at virtual address 139fea20, epc == 8000cc0c, ra == 8034f2a4 Oops[#1]: ... $24 : 139fea20 1e1f7cb6 ... Call Trace: [<8000cc0c>] resume+0xac/0x118 [<8034f2a4>] __schedule+0x5f8/0x78c [<8034f4e0>] schedule_preempt_disabled+0x20/0x2c [<80348eec>] rest_init+0x74/0x84 [<804dc990>] start_kernel+0x43c/0x454 Code: 3c18804b 8f184030 8cb901f8 00c0e021 8cb002f0 8cb102f4 8cb202f8 8cb302fc This can also be forced by modifying arch/mips/include/asm/stackprotector.h so that the default __stack_chk_guard value is more likely to be a bad (or unaligned) pointer. Fix it to use PTR_LA instead, to load the address of the canary value, which the LONG_S can then use to write into it. Reported-by: bobjones (via #mipslinux on IRC) Signed-off-by: James Hogan Cc: Ralf Baechle Cc: Gregory Fong Cc: linux-mips@linux-mips.org Cc: stable@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/6026/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/octeon_switch.S | 2 +- arch/mips/kernel/r2300_switch.S | 2 +- arch/mips/kernel/r4k_switch.S | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/mips/kernel/octeon_switch.S b/arch/mips/kernel/octeon_switch.S index 4204d76af854..029e002a4ea0 100644 --- a/arch/mips/kernel/octeon_switch.S +++ b/arch/mips/kernel/octeon_switch.S @@ -73,7 +73,7 @@ 3: #if defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_SMP) - PTR_L t8, __stack_chk_guard + PTR_LA t8, __stack_chk_guard LONG_L t9, TASK_STACK_CANARY(a1) LONG_S t9, 0(t8) #endif diff --git a/arch/mips/kernel/r2300_switch.S b/arch/mips/kernel/r2300_switch.S index 38af83f84c4a..20b7b040e76f 100644 --- a/arch/mips/kernel/r2300_switch.S +++ b/arch/mips/kernel/r2300_switch.S @@ -67,7 +67,7 @@ LEAF(resume) 1: #if defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_SMP) - PTR_L t8, __stack_chk_guard + PTR_LA t8, __stack_chk_guard LONG_L t9, TASK_STACK_CANARY(a1) LONG_S t9, 0(t8) #endif diff --git a/arch/mips/kernel/r4k_switch.S b/arch/mips/kernel/r4k_switch.S index 921238a6bd26..078de5eaca8f 100644 --- a/arch/mips/kernel/r4k_switch.S +++ b/arch/mips/kernel/r4k_switch.S @@ -69,7 +69,7 @@ 1: #if defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_SMP) - PTR_L t8, __stack_chk_guard + PTR_LA t8, __stack_chk_guard LONG_L t9, TASK_STACK_CANARY(a1) LONG_S t9, 0(t8) #endif -- cgit v1.2.3 From 8b5ede69d24db939f52b47effff2f6fe1e83e08b Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 8 Oct 2013 08:08:24 +1100 Subject: powerpc/irq: Don't switch to irq stack from softirq stack MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit irq_exit() is now called on the irq stack, which can trigger a switch to the softirq stack from the irq stack. If an interrupt happens at that point, we will not properly detect the re-entrancy and clobber the original return context on the irq stack. This fixes it. The side effect is to prevent all nesting from softirq stack to irq stack even in the "safe" case but it's simpler that way and matches what x86_64 does. Reported-by: Cédric Le Goater Tested-by: Cédric Le Goater Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Linus Torvalds --- arch/powerpc/kernel/irq.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 57d286a78f86..c7cb8c232d2f 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -495,14 +495,15 @@ void __do_irq(struct pt_regs *regs) void do_IRQ(struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); - struct thread_info *curtp, *irqtp; + struct thread_info *curtp, *irqtp, *sirqtp; /* Switch to the irq stack to handle this */ curtp = current_thread_info(); irqtp = hardirq_ctx[raw_smp_processor_id()]; + sirqtp = softirq_ctx[raw_smp_processor_id()]; /* Already there ? */ - if (unlikely(curtp == irqtp)) { + if (unlikely(curtp == irqtp || curtp == sirqtp)) { __do_irq(regs); set_irq_regs(old_regs); return; -- cgit v1.2.3 From 016c12d2fb8584db392211bc6b0bdd6fcf7cfd97 Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Mon, 7 Oct 2013 15:43:49 -0500 Subject: ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree SoC family definitions at the moment are reactive to board needs as a result, beagle-xm would matchup with ti,omap3 which invokes omap3430_init_early instead of omap3630_init_early. Obviously, this is the wrong behavior. With clock node dts conversion, we get the following warnings before system hangs as a result and 3630 based platforms fails to boot (uart4 clocks are only present in OMAP3630 and not present in OMAP3430): ... omap_hwmod: uart4: cannot clk_get main_clk uart4_fck omap_hwmod: uart4: cannot _init_clocks WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2434 _init+0x6c/0x80() omap_hwmod: uart4: couldn't init clocks ... WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126 _enable+0x254/0x280() omap_hwmod: timer12: enabled state can only be entered from initialized, idle, or disabled state ... WARNING: CPU: 0 PID: 46 at arch/arm/mach-omap2/omap_hwmod.c:2224 _idle+0xd4/0xf8() omap_hwmod: timer12: idle state can only be entered from enabled state WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126 _enable+0x254/0x280() omap_hwmod: uart4: enabled state can only be entered from initialized, idle, or disabled state So, add specific compatiblity for 3630 to allow match for Beagle-XM platform. Signed-off-by: Nishanth Menon [tony@atomide.com: left out ti,omap343x, updated comments] Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap3-beagle-xm.dts | 2 +- arch/arm/mach-omap2/board-generic.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts index 0c514dc8460c..2816bf612672 100644 --- a/arch/arm/boot/dts/omap3-beagle-xm.dts +++ b/arch/arm/boot/dts/omap3-beagle-xm.dts @@ -11,7 +11,7 @@ / { model = "TI OMAP3 BeagleBoard xM"; - compatible = "ti,omap3-beagle-xm", "ti,omap3-beagle", "ti,omap3"; + compatible = "ti,omap3-beagle-xm", "ti,omap36xx", "ti,omap3"; cpus { cpu@0 { diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c index 39c78387ddec..87162e1b94a5 100644 --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -129,6 +129,24 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)") .restart = omap3xxx_restart, MACHINE_END +static const char *omap36xx_boards_compat[] __initdata = { + "ti,omap36xx", + NULL, +}; + +DT_MACHINE_START(OMAP36XX_DT, "Generic OMAP36xx (Flattened Device Tree)") + .reserve = omap_reserve, + .map_io = omap3_map_io, + .init_early = omap3630_init_early, + .init_irq = omap_intc_of_init, + .handle_irq = omap3_intc_handle_irq, + .init_machine = omap_generic_init, + .init_late = omap3_init_late, + .init_time = omap3_sync32k_timer_init, + .dt_compat = omap36xx_boards_compat, + .restart = omap3xxx_restart, +MACHINE_END + static const char *omap3_gp_boards_compat[] __initdata = { "ti,omap3-beagle", "timll,omap3-devkit8000", -- cgit v1.2.3 From d623a0e19dcbc4e44a8db047158815d7f8c2b839 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 7 Oct 2013 10:22:01 -0700 Subject: ARM: dts: Fix pinctrl mask for omap3 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The wake-up interrupt bit is available on omap3/4/5 processors unlike what we claim. Without fixing it we cannot use it on omap3 and the system configured for wake-up events will just hang on wake-up. Cc: Grygorii Strashko Cc: Benoît Cousson Cc: devicetree@vger.kernel.org Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap3.dtsi | 4 ++-- arch/arm/mach-omap2/mux.h | 4 +--- include/dt-bindings/pinctrl/omap.h | 4 +--- 3 files changed, 4 insertions(+), 8 deletions(-) (limited to 'arch') diff --git a/arch/arm/boot/dts/omap3.dtsi b/arch/arm/boot/dts/omap3.dtsi index 7d95cda1fae4..b41bd57f4328 100644 --- a/arch/arm/boot/dts/omap3.dtsi +++ b/arch/arm/boot/dts/omap3.dtsi @@ -108,7 +108,7 @@ #address-cells = <1>; #size-cells = <0>; pinctrl-single,register-width = <16>; - pinctrl-single,function-mask = <0x7f1f>; + pinctrl-single,function-mask = <0xff1f>; }; omap3_pmx_wkup: pinmux@0x48002a00 { @@ -117,7 +117,7 @@ #address-cells = <1>; #size-cells = <0>; pinctrl-single,register-width = <16>; - pinctrl-single,function-mask = <0x7f1f>; + pinctrl-single,function-mask = <0xff1f>; }; gpio1: gpio@48310000 { diff --git a/arch/arm/mach-omap2/mux.h b/arch/arm/mach-omap2/mux.h index 5d2080ef7923..16f78a990d04 100644 --- a/arch/arm/mach-omap2/mux.h +++ b/arch/arm/mach-omap2/mux.h @@ -28,7 +28,7 @@ #define OMAP_PULL_UP (1 << 4) #define OMAP_ALTELECTRICALSEL (1 << 5) -/* 34xx specific mux bit defines */ +/* omap3/4/5 specific mux bit defines */ #define OMAP_INPUT_EN (1 << 8) #define OMAP_OFF_EN (1 << 9) #define OMAP_OFFOUT_EN (1 << 10) @@ -36,8 +36,6 @@ #define OMAP_OFF_PULL_EN (1 << 12) #define OMAP_OFF_PULL_UP (1 << 13) #define OMAP_WAKEUP_EN (1 << 14) - -/* 44xx specific mux bit defines */ #define OMAP_WAKEUP_EVENT (1 << 15) /* Active pin states */ diff --git a/include/dt-bindings/pinctrl/omap.h b/include/dt-bindings/pinctrl/omap.h index edbd250809cb..bed35e36fd27 100644 --- a/include/dt-bindings/pinctrl/omap.h +++ b/include/dt-bindings/pinctrl/omap.h @@ -23,7 +23,7 @@ #define PULL_UP (1 << 4) #define ALTELECTRICALSEL (1 << 5) -/* 34xx specific mux bit defines */ +/* omap3/4/5 specific mux bit defines */ #define INPUT_EN (1 << 8) #define OFF_EN (1 << 9) #define OFFOUT_EN (1 << 10) @@ -31,8 +31,6 @@ #define OFF_PULL_EN (1 << 12) #define OFF_PULL_UP (1 << 13) #define WAKEUP_EN (1 << 14) - -/* 44xx specific mux bit defines */ #define WAKEUP_EVENT (1 << 15) /* Active pin states */ -- cgit v1.2.3 From 0b8214fe186746d32d8ca5522b736d5b59fd5d40 Mon Sep 17 00:00:00 2001 From: Simon Barth Date: Tue, 8 Oct 2013 10:50:33 +0200 Subject: ARM: mach-omap2: board-generic: fix undefined symbol Since dra7 reuses the function 'omap5_realtime_timer_init' in arch/arm/mach-omap2/board-generic.c as timer init function, it has to be built for this SoC as well. Signed-off-by: Simon Barth Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/timer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c index fa74a0625da1..ead48fa5715e 100644 --- a/arch/arm/mach-omap2/timer.c +++ b/arch/arm/mach-omap2/timer.c @@ -628,7 +628,7 @@ void __init omap4_local_timer_init(void) #endif /* CONFIG_HAVE_ARM_TWD */ #endif /* CONFIG_ARCH_OMAP4 */ -#ifdef CONFIG_SOC_OMAP5 +#if defined(CONFIG_SOC_OMAP5) || defined(CONFIG_SOC_DRA7XX) void __init omap5_realtime_timer_init(void) { omap4_sync32k_timer_init(); @@ -636,7 +636,7 @@ void __init omap5_realtime_timer_init(void) clocksource_of_init(); } -#endif /* CONFIG_SOC_OMAP5 */ +#endif /* CONFIG_SOC_OMAP5 || CONFIG_SOC_DRA7XX */ /** * omap_timer_init - build and register timer device with an -- cgit v1.2.3 From d1f1ca36b566aa56effdd7df69750062ec735131 Mon Sep 17 00:00:00 2001 From: Pali Rohár Date: Mon, 23 Sep 2013 14:50:12 +0200 Subject: ARM: OMAP2: RX-51: Add missing max_current to rx51_lp5523_led_config MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit File drivers/leds/leds-lp55xx-common.c refuse to change led_current sysfs attribute if value is higher than max_current specified in board file. By default global C variables are zero, so changing always failed. This patch adding missing max_current and setting it to max safe value 100 (10 mA). It is unclear which commit exactly caused this regression as the lp5523 driver was broken and was hiding the platform data breakage. Now the driver is fixed so this should be fixed as well. Signed-off-by: Pali Rohár Signed-off-by: Joerg Reisenweber [tony@atomide.com: updated comments to describe regression] Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-rx51-peripherals.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'arch') diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c index c3270c0f1fce..f6fe388af989 100644 --- a/arch/arm/mach-omap2/board-rx51-peripherals.c +++ b/arch/arm/mach-omap2/board-rx51-peripherals.c @@ -167,38 +167,47 @@ static struct lp55xx_led_config rx51_lp5523_led_config[] = { .name = "lp5523:kb1", .chan_nr = 0, .led_current = 50, + .max_current = 100, }, { .name = "lp5523:kb2", .chan_nr = 1, .led_current = 50, + .max_current = 100, }, { .name = "lp5523:kb3", .chan_nr = 2, .led_current = 50, + .max_current = 100, }, { .name = "lp5523:kb4", .chan_nr = 3, .led_current = 50, + .max_current = 100, }, { .name = "lp5523:b", .chan_nr = 4, .led_current = 50, + .max_current = 100, }, { .name = "lp5523:g", .chan_nr = 5, .led_current = 50, + .max_current = 100, }, { .name = "lp5523:r", .chan_nr = 6, .led_current = 50, + .max_current = 100, }, { .name = "lp5523:kb5", .chan_nr = 7, .led_current = 50, + .max_current = 100, }, { .name = "lp5523:kb6", .chan_nr = 8, .led_current = 50, + .max_current = 100, } }; -- cgit v1.2.3 From d0d538b9d1239ed6ed318a2304ba5a763f835089 Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Wed, 9 Oct 2013 19:13:19 +0300 Subject: KVM: nVMX: fix shadow on EPT 72f857950f6f19 broke shadow on EPT. This patch reverts it and fixes PAE on nEPT (which reverted commit fixed) in other way. Shadow on EPT is now broken because while L1 builds shadow page table for L2 (which is PAE while L2 is in real mode) it never loads L2's GUEST_PDPTR[0-3]. They do not need to be loaded because without nested virtualization HW does this during guest entry if EPT is disabled, but in our case L0 emulates L2's vmentry while EPT is enables, so we cannot rely on vmcs12->guest_pdptr[0-3] to contain up-to-date values and need to re-read PDPTEs from L2 memory. This is what kvm_set_cr3() is doing, but by clearing cache bits during L2 vmentry we drop values that kvm_set_cr3() read from memory. So why the same code does not work for PAE on nEPT? kvm_set_cr3() reads pdptes into vcpu->arch.walk_mmu->pdptrs[]. walk_mmu points to vcpu->arch.nested_mmu while nested guest is running, but ept_load_pdptrs() uses vcpu->arch.mmu which contain incorrect values. Fix that by using walk_mmu in ept_(load|save)_pdptrs. Signed-off-by: Gleb Natapov Reviewed-by: Paolo Bonzini Tested-by: Paolo Bonzini Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) (limited to 'arch') diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 3b8e7459dd4d..2b2fce1b2009 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -3255,25 +3255,29 @@ static void vmx_decache_cr4_guest_bits(struct kvm_vcpu *vcpu) static void ept_load_pdptrs(struct kvm_vcpu *vcpu) { + struct kvm_mmu *mmu = vcpu->arch.walk_mmu; + if (!test_bit(VCPU_EXREG_PDPTR, (unsigned long *)&vcpu->arch.regs_dirty)) return; if (is_paging(vcpu) && is_pae(vcpu) && !is_long_mode(vcpu)) { - vmcs_write64(GUEST_PDPTR0, vcpu->arch.mmu.pdptrs[0]); - vmcs_write64(GUEST_PDPTR1, vcpu->arch.mmu.pdptrs[1]); - vmcs_write64(GUEST_PDPTR2, vcpu->arch.mmu.pdptrs[2]); - vmcs_write64(GUEST_PDPTR3, vcpu->arch.mmu.pdptrs[3]); + vmcs_write64(GUEST_PDPTR0, mmu->pdptrs[0]); + vmcs_write64(GUEST_PDPTR1, mmu->pdptrs[1]); + vmcs_write64(GUEST_PDPTR2, mmu->pdptrs[2]); + vmcs_write64(GUEST_PDPTR3, mmu->pdptrs[3]); } } static void ept_save_pdptrs(struct kvm_vcpu *vcpu) { + struct kvm_mmu *mmu = vcpu->arch.walk_mmu; + if (is_paging(vcpu) && is_pae(vcpu) && !is_long_mode(vcpu)) { - vcpu->arch.mmu.pdptrs[0] = vmcs_read64(GUEST_PDPTR0); - vcpu->arch.mmu.pdptrs[1] = vmcs_read64(GUEST_PDPTR1); - vcpu->arch.mmu.pdptrs[2] = vmcs_read64(GUEST_PDPTR2); - vcpu->arch.mmu.pdptrs[3] = vmcs_read64(GUEST_PDPTR3); + mmu->pdptrs[0] = vmcs_read64(GUEST_PDPTR0); + mmu->pdptrs[1] = vmcs_read64(GUEST_PDPTR1); + mmu->pdptrs[2] = vmcs_read64(GUEST_PDPTR2); + mmu->pdptrs[3] = vmcs_read64(GUEST_PDPTR3); } __set_bit(VCPU_EXREG_PDPTR, @@ -7777,10 +7781,6 @@ static void prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) vmcs_write64(GUEST_PDPTR1, vmcs12->guest_pdptr1); vmcs_write64(GUEST_PDPTR2, vmcs12->guest_pdptr2); vmcs_write64(GUEST_PDPTR3, vmcs12->guest_pdptr3); - __clear_bit(VCPU_EXREG_PDPTR, - (unsigned long *)&vcpu->arch.regs_avail); - __clear_bit(VCPU_EXREG_PDPTR, - (unsigned long *)&vcpu->arch.regs_dirty); } kvm_register_write(vcpu, VCPU_REGS_RSP, vmcs12->guest_rsp); -- cgit v1.2.3 From cfc860253abd73e1681696c08ea268d33285a2c4 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Sat, 21 Sep 2013 09:53:28 +1000 Subject: KVM: PPC: Book3S HV: Fix typo in saving DSCR This fixes a typo in the code that saves the guest DSCR (Data Stream Control Register) into the kvm_vcpu_arch struct on guest exit. The effect of the typo was that the DSCR value was saved in the wrong place, so changes to the DSCR by the guest didn't persist across guest exit and entry, and some host kernel memory got corrupted. Cc: stable@vger.kernel.org [v3.1+] Signed-off-by: Paul Mackerras Acked-by: Alexander Graf Signed-off-by: Paolo Bonzini --- arch/powerpc/kvm/book3s_hv_rmhandlers.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index 294b7af28cdd..c71103b8a748 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -1066,7 +1066,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206) BEGIN_FTR_SECTION mfspr r8, SPRN_DSCR ld r7, HSTATE_DSCR(r13) - std r8, VCPU_DSCR(r7) + std r8, VCPU_DSCR(r9) mtspr SPRN_DSCR, r7 END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206) -- cgit v1.2.3 From 40fde70d0df993d1a652d6cc69f8b4e967656170 Mon Sep 17 00:00:00 2001 From: Bharat Bhushan Date: Wed, 7 Aug 2013 15:33:46 +0530 Subject: kvm: ppc: booke: check range page invalidation progress on page setup When the MM code is invalidating a range of pages, it calls the KVM kvm_mmu_notifier_invalidate_range_start() notifier function, which calls kvm_unmap_hva_range(), which arranges to flush all the TLBs for guest pages. However, the Linux PTEs for the range being flushed are still valid at that point. We are not supposed to establish any new references to pages in the range until the ...range_end() notifier gets called. The PPC-specific KVM code doesn't get any explicit notification of that; instead, we are supposed to use mmu_notifier_retry() to test whether we are or have been inside a range flush notifier pair while we have been referencing a page. This patch calls the mmu_notifier_retry() while mapping the guest page to ensure we are not referencing a page when in range invalidation. This call is inside a region locked with kvm->mmu_lock, which is the same lock that is called by the KVM MMU notifier functions, thus ensuring that no new notification can proceed while we are in the locked region. Signed-off-by: Bharat Bhushan Acked-by: Alexander Graf [Backported to 3.12 - Paolo] Reviewed-by: Bharat Bhushan Signed-off-by: Paolo Bonzini --- arch/powerpc/kvm/e500_mmu_host.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c index 1c6a9d729df4..c65593abae8e 100644 --- a/arch/powerpc/kvm/e500_mmu_host.c +++ b/arch/powerpc/kvm/e500_mmu_host.c @@ -332,6 +332,13 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, unsigned long hva; int pfnmap = 0; int tsize = BOOK3E_PAGESZ_4K; + int ret = 0; + unsigned long mmu_seq; + struct kvm *kvm = vcpu_e500->vcpu.kvm; + + /* used to check for invalidations in progress */ + mmu_seq = kvm->mmu_notifier_seq; + smp_rmb(); /* * Translate guest physical to true physical, acquiring @@ -449,6 +456,12 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1); } + spin_lock(&kvm->mmu_lock); + if (mmu_notifier_retry(kvm, mmu_seq)) { + ret = -EAGAIN; + goto out; + } + kvmppc_e500_ref_setup(ref, gtlbe, pfn); kvmppc_e500_setup_stlbe(&vcpu_e500->vcpu, gtlbe, tsize, @@ -457,10 +470,13 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, /* Clear i-cache for new pages */ kvmppc_mmu_flush_icache(pfn); +out: + spin_unlock(&kvm->mmu_lock); + /* Drop refcount on page, so that mmu notifiers can clear it */ kvm_release_pfn_clean(pfn); - return 0; + return ret; } /* XXX only map the one-one case, for now use TLB0 */ -- cgit v1.2.3 From 7cde9b27e7b3a2e09d647bb4f6d94e842698d2d5 Mon Sep 17 00:00:00 2001 From: Frediano Ziglio Date: Thu, 10 Oct 2013 14:39:37 +0000 Subject: xen: Fix possible user space selector corruption Due to the way kernel is initialized under Xen is possible that the ring1 selector used by the kernel for the boot cpu end up to be copied to userspace leading to segmentation fault in the userspace. Xen code in the kernel initialize no-boot cpus with correct selectors (ds and es set to __USER_DS) but the boot one keep the ring1 (passed by Xen). On task context switch (switch_to) we assume that ds, es and cs already point to __USER_DS and __KERNEL_CSso these selector are not changed. If processor is an Intel that support sysenter instruction sysenter/sysexit is used so ds and es are not restored switching back from kernel to userspace. In the case the selectors point to a ring1 instead of __USER_DS the userspace code will crash on first memory access attempt (to be precise Xen on the emulated iret used to do sysexit will detect and set ds and es to zero which lead to GPF anyway). Now if an userspace process call kernel using sysenter and get rescheduled (for me it happen on a specific init calling wait4) could happen that the ring1 selector is set to ds and es. This is quite hard to detect cause after a while these selectors are fixed (__USER_DS seems sticky). Bisecting the code commit 7076aada1040de4ed79a5977dbabdb5e5ea5e249 appears to be the first one that have this issue. Signed-off-by: Frediano Ziglio Signed-off-by: Stefano Stabellini Reviewed-by: Andrew Cooper --- arch/x86/xen/smp.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'arch') diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index d1e4777b4e75..31d04758b76f 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -278,6 +278,15 @@ static void __init xen_smp_prepare_boot_cpu(void) old memory can be recycled */ make_lowmem_page_readwrite(xen_initial_gdt); +#ifdef CONFIG_X86_32 + /* + * Xen starts us with XEN_FLAT_RING1_DS, but linux code + * expects __USER_DS + */ + loadsegment(ds, __USER_DS); + loadsegment(es, __USER_DS); +#endif + xen_filter_cpu_maps(); xen_setup_vcpu_info_placement(); } -- cgit v1.2.3 From 3f0116c3238a96bc18ad4b4acefe4e7be32fa861 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Thu, 10 Oct 2013 10:16:30 +0200 Subject: compiler/gcc4: Add quirk for 'asm goto' miscompilation bug Fengguang Wu, Oleg Nesterov and Peter Zijlstra tracked down a kernel crash to a GCC bug: GCC miscompiles certain 'asm goto' constructs, as outlined here: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670 Implement a workaround suggested by Jakub Jelinek. Reported-and-tested-by: Fengguang Wu Reported-by: Oleg Nesterov Reported-by: Peter Zijlstra Suggested-by: Jakub Jelinek Reviewed-by: Richard Henderson Cc: Linus Torvalds Cc: Andrew Morton Cc: Signed-off-by: Ingo Molnar --- arch/arm/include/asm/jump_label.h | 2 +- arch/mips/include/asm/jump_label.h | 2 +- arch/powerpc/include/asm/jump_label.h | 2 +- arch/s390/include/asm/jump_label.h | 2 +- arch/sparc/include/asm/jump_label.h | 2 +- arch/x86/include/asm/cpufeature.h | 6 +++--- arch/x86/include/asm/jump_label.h | 2 +- arch/x86/include/asm/mutex_64.h | 4 ++-- include/linux/compiler-gcc4.h | 15 +++++++++++++++ 9 files changed, 26 insertions(+), 11 deletions(-) (limited to 'arch') diff --git a/arch/arm/include/asm/jump_label.h b/arch/arm/include/asm/jump_label.h index bfc198c75913..863c892b4aaa 100644 --- a/arch/arm/include/asm/jump_label.h +++ b/arch/arm/include/asm/jump_label.h @@ -16,7 +16,7 @@ static __always_inline bool arch_static_branch(struct static_key *key) { - asm goto("1:\n\t" + asm_volatile_goto("1:\n\t" JUMP_LABEL_NOP "\n\t" ".pushsection __jump_table, \"aw\"\n\t" ".word 1b, %l[l_yes], %c0\n\t" diff --git a/arch/mips/include/asm/jump_label.h b/arch/mips/include/asm/jump_label.h index 4d6d77ed9b9d..e194f957ca8c 100644 --- a/arch/mips/include/asm/jump_label.h +++ b/arch/mips/include/asm/jump_label.h @@ -22,7 +22,7 @@ static __always_inline bool arch_static_branch(struct static_key *key) { - asm goto("1:\tnop\n\t" + asm_volatile_goto("1:\tnop\n\t" "nop\n\t" ".pushsection __jump_table, \"aw\"\n\t" WORD_INSN " 1b, %l[l_yes], %0\n\t" diff --git a/arch/powerpc/include/asm/jump_label.h b/arch/powerpc/include/asm/jump_label.h index ae098c438f00..f016bb699b5f 100644 --- a/arch/powerpc/include/asm/jump_label.h +++ b/arch/powerpc/include/asm/jump_label.h @@ -19,7 +19,7 @@ static __always_inline bool arch_static_branch(struct static_key *key) { - asm goto("1:\n\t" + asm_volatile_goto("1:\n\t" "nop\n\t" ".pushsection __jump_table, \"aw\"\n\t" JUMP_ENTRY_TYPE "1b, %l[l_yes], %c0\n\t" diff --git a/arch/s390/include/asm/jump_label.h b/arch/s390/include/asm/jump_label.h index 6c32190dc73e..346b1c85ffb4 100644 --- a/arch/s390/include/asm/jump_label.h +++ b/arch/s390/include/asm/jump_label.h @@ -15,7 +15,7 @@ static __always_inline bool arch_static_branch(struct static_key *key) { - asm goto("0: brcl 0,0\n" + asm_volatile_goto("0: brcl 0,0\n" ".pushsection __jump_table, \"aw\"\n" ASM_ALIGN "\n" ASM_PTR " 0b, %l[label], %0\n" diff --git a/arch/sparc/include/asm/jump_label.h b/arch/sparc/include/asm/jump_label.h index 5080d16a832f..ec2e2e2aba7d 100644 --- a/arch/sparc/include/asm/jump_label.h +++ b/arch/sparc/include/asm/jump_label.h @@ -9,7 +9,7 @@ static __always_inline bool arch_static_branch(struct static_key *key) { - asm goto("1:\n\t" + asm_volatile_goto("1:\n\t" "nop\n\t" "nop\n\t" ".pushsection __jump_table, \"aw\"\n\t" diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index d3f5c63078d8..89270b4318db 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -374,7 +374,7 @@ static __always_inline __pure bool __static_cpu_has(u16 bit) * Catch too early usage of this before alternatives * have run. */ - asm goto("1: jmp %l[t_warn]\n" + asm_volatile_goto("1: jmp %l[t_warn]\n" "2:\n" ".section .altinstructions,\"a\"\n" " .long 1b - .\n" @@ -388,7 +388,7 @@ static __always_inline __pure bool __static_cpu_has(u16 bit) #endif - asm goto("1: jmp %l[t_no]\n" + asm_volatile_goto("1: jmp %l[t_no]\n" "2:\n" ".section .altinstructions,\"a\"\n" " .long 1b - .\n" @@ -453,7 +453,7 @@ static __always_inline __pure bool _static_cpu_has_safe(u16 bit) * have. Thus, we force the jump to the widest, 4-byte, signed relative * offset even though the last would often fit in less bytes. */ - asm goto("1: .byte 0xe9\n .long %l[t_dynamic] - 2f\n" + asm_volatile_goto("1: .byte 0xe9\n .long %l[t_dynamic] - 2f\n" "2:\n" ".section .altinstructions,\"a\"\n" " .long 1b - .\n" /* src offset */ diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h index 64507f35800c..6a2cefb4395a 100644 --- a/arch/x86/include/asm/jump_label.h +++ b/arch/x86/include/asm/jump_label.h @@ -18,7 +18,7 @@ static __always_inline bool arch_static_branch(struct static_key *key) { - asm goto("1:" + asm_volatile_goto("1:" ".byte " __stringify(STATIC_KEY_INIT_NOP) "\n\t" ".pushsection __jump_table, \"aw\" \n\t" _ASM_ALIGN "\n\t" diff --git a/arch/x86/include/asm/mutex_64.h b/arch/x86/include/asm/mutex_64.h index e7e6751648ed..07537a44216e 100644 --- a/arch/x86/include/asm/mutex_64.h +++ b/arch/x86/include/asm/mutex_64.h @@ -20,7 +20,7 @@ static inline void __mutex_fastpath_lock(atomic_t *v, void (*fail_fn)(atomic_t *)) { - asm volatile goto(LOCK_PREFIX " decl %0\n" + asm_volatile_goto(LOCK_PREFIX " decl %0\n" " jns %l[exit]\n" : : "m" (v->counter) : "memory", "cc" @@ -75,7 +75,7 @@ static inline int __mutex_fastpath_lock_retval(atomic_t *count) static inline void __mutex_fastpath_unlock(atomic_t *v, void (*fail_fn)(atomic_t *)) { - asm volatile goto(LOCK_PREFIX " incl %0\n" + asm_volatile_goto(LOCK_PREFIX " incl %0\n" " jg %l[exit]\n" : : "m" (v->counter) : "memory", "cc" diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index 842de225055f..ded429966c1f 100644 --- a/include/linux/compiler-gcc4.h +++ b/include/linux/compiler-gcc4.h @@ -65,6 +65,21 @@ #define __visible __attribute__((externally_visible)) #endif +/* + * GCC 'asm goto' miscompiles certain code sequences: + * + * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670 + * + * Work it around via a compiler barrier quirk suggested by Jakub Jelinek. + * Fixed in GCC 4.8.2 and later versions. + * + * (asm goto is automatically volatile - the naming reflects this.) + */ +#if GCC_VERSION <= 40801 +# define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0) +#else +# define asm_volatile_goto(x...) do { asm goto(x); } while (0) +#endif #ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP #if GCC_VERSION >= 40400 -- cgit v1.2.3 From 5b24282846c064ee90d40fcb3a8f63b8e754fd28 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Thu, 10 Oct 2013 19:33:57 +0530 Subject: ARC: Ignore ptrace SETREGSET request for synthetic register "stop_pc" ARCompact TRAP_S insn used for breakpoints, commits before exception is taken (updating architectural PC). So ptregs->ret contains next-PC and not the breakpoint PC itself. This is different from other restartable exceptions such as TLB Miss where ptregs->ret has exact faulting PC. gdb needs to know exact-PC hence ARC ptrace GETREGSET provides for @stop_pc which returns ptregs->ret vs. EFA depending on the situation. However, writing stop_pc (SETREGSET request), which updates ptregs->ret doesn't makes sense stop_pc doesn't always correspond to that reg as described above. This was not an issue so far since user_regs->ret / user_regs->stop_pc had same value and both writing to ptregs->ret was OK, needless, but NOT broken, hence not observed. With gdb "jump", they diverge, and user_regs->ret updating ptregs is overwritten immediately with stop_pc, which this patch fixes. Reported-by: Anton Kolesov Signed-off-by: Vineet Gupta --- arch/arc/kernel/ptrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arc/kernel/ptrace.c b/arch/arc/kernel/ptrace.c index 333238564b67..5d76706139dd 100644 --- a/arch/arc/kernel/ptrace.c +++ b/arch/arc/kernel/ptrace.c @@ -102,7 +102,7 @@ static int genregs_set(struct task_struct *target, REG_IGNORE_ONE(pad2); REG_IN_CHUNK(callee, efa, cregs); /* callee_regs[r25..r13] */ REG_IGNORE_ONE(efa); /* efa update invalid */ - REG_IN_ONE(stop_pc, &ptregs->ret); /* stop_pc: PC update */ + REG_IGNORE_ONE(stop_pc); /* PC updated via @ret */ return ret; } -- cgit v1.2.3 From 320c90be7ba1c371e882edff57272a89b213d136 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 5 Sep 2013 11:33:15 +0200 Subject: parisc: Export flush_cache_page() (needed by lustre) ERROR: "flush_cache_page" [drivers/staging/lustre/lustre/libcfs/libcfs.ko] undefined! Signed-off-by: Geert Uytterhoeven Signed-off-by: Helge Deller --- arch/parisc/kernel/cache.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index c035673209f7..b521c0adf4ec 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -602,6 +602,7 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long __flush_cache_page(vma, vmaddr, PFN_PHYS(pfn)); } } +EXPORT_SYMBOL_GPL(flush_cache_page); #ifdef CONFIG_PARISC_TMPALIAS -- cgit v1.2.3 From 528d8eb20a3053d72cb0cea486418aa602d9e1f1 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Thu, 12 Sep 2013 00:07:18 +0800 Subject: parisc: kill SMP single function call interrupt Commit 9a46ad6d6df3b54 "smp: make smp_call_function_many() use logic similar to smp_call_function_single()" has unified the way to handle single and multiple cross-CPU function calls. Now only one interrupt is needed for architecture specific code to support generic SMP function call interfaces, so kill the redundant single function call interrupt. Signed-off-by: Jiang Liu Cc: Jiang Liu Signed-off-by: Helge Deller --- arch/parisc/kernel/smp.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) (limited to 'arch') diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c index 8a252f2d6c08..2b96602e812f 100644 --- a/arch/parisc/kernel/smp.c +++ b/arch/parisc/kernel/smp.c @@ -72,7 +72,6 @@ enum ipi_message_type { IPI_NOP=0, IPI_RESCHEDULE=1, IPI_CALL_FUNC, - IPI_CALL_FUNC_SINGLE, IPI_CPU_START, IPI_CPU_STOP, IPI_CPU_TEST @@ -164,11 +163,6 @@ ipi_interrupt(int irq, void *dev_id) generic_smp_call_function_interrupt(); break; - case IPI_CALL_FUNC_SINGLE: - smp_debug(100, KERN_DEBUG "CPU%d IPI_CALL_FUNC_SINGLE\n", this_cpu); - generic_smp_call_function_single_interrupt(); - break; - case IPI_CPU_START: smp_debug(100, KERN_DEBUG "CPU%d IPI_CPU_START\n", this_cpu); break; @@ -260,7 +254,7 @@ void arch_send_call_function_ipi_mask(const struct cpumask *mask) void arch_send_call_function_single_ipi(int cpu) { - send_IPI_single(cpu, IPI_CALL_FUNC_SINGLE); + send_IPI_single(cpu, IPI_CALL_FUNC); } /* -- cgit v1.2.3 From ec7c241953d14af097d941de56348c55e4e9ac5d Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Wed, 9 Oct 2013 23:10:14 +0200 Subject: parisc: remove unused syscall_ipi() function. Signed-off-by: Helge Deller --- arch/parisc/kernel/traps.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'arch') diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c index 04e47c6a4562..ebc877c28583 100644 --- a/arch/parisc/kernel/traps.c +++ b/arch/parisc/kernel/traps.c @@ -291,11 +291,6 @@ void die_if_kernel(char *str, struct pt_regs *regs, long err) do_exit(SIGSEGV); } -int syscall_ipi(int (*syscall) (struct pt_regs *), struct pt_regs *regs) -{ - return syscall(regs); -} - /* gdb uses break 4,8 */ #define GDB_BREAK_INSN 0x10004 static void handle_gdb_break(struct pt_regs *regs, int wot) -- cgit v1.2.3 From a60ac4b5f0b630889a01293db52ac65003a01e98 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Wed, 9 Oct 2013 23:12:46 +0200 Subject: parisc: mark parisc_terminate() noreturn and cold. Signed-off-by: Helge Deller --- arch/parisc/include/asm/traps.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/parisc/include/asm/traps.h b/arch/parisc/include/asm/traps.h index 1945f995f2df..4736020ba5ea 100644 --- a/arch/parisc/include/asm/traps.h +++ b/arch/parisc/include/asm/traps.h @@ -6,7 +6,7 @@ struct pt_regs; /* traps.c */ void parisc_terminate(char *msg, struct pt_regs *regs, - int code, unsigned long offset); + int code, unsigned long offset) __noreturn __cold; /* mm/fault.c */ void do_page_fault(struct pt_regs *regs, unsigned long code, -- cgit v1.2.3 From 59b33f148cc08fb33cbe823fca1e34f7f023765e Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Tue, 1 Oct 2013 21:54:46 +0200 Subject: parisc: fix interruption handler to respect pagefault_disable() Running an "echo t > /proc/sysrq-trigger" crashes the parisc kernel. The problem is, that in print_worker_info() we try to read the workqueue info via the probe_kernel_read() functions which use pagefault_disable() to avoid crashes like this: probe_kernel_read(&pwq, &worker->current_pwq, sizeof(pwq)); probe_kernel_read(&wq, &pwq->wq, sizeof(wq)); probe_kernel_read(name, wq->name, sizeof(name) - 1); The problem here is, that the first probe_kernel_read(&pwq) might return zero in pwq and as such the following probe_kernel_reads() try to access contents of the page zero which is read protected and generate a kernel segfault. With this patch we fix the interruption handler to call parisc_terminate() directly only if pagefault_disable() was not called (in which case preempt_count()==0). Otherwise we hand over to the pagefault handler which will try to look up the faulting address in the fixup tables. Signed-off-by: Helge Deller Cc: # v3.0+ Signed-off-by: John David Anglin Signed-off-by: Helge Deller --- arch/parisc/kernel/traps.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c index ebc877c28583..1cd1d0c83b6d 100644 --- a/arch/parisc/kernel/traps.c +++ b/arch/parisc/kernel/traps.c @@ -800,14 +800,14 @@ void notrace handle_interruption(int code, struct pt_regs *regs) else { /* - * The kernel should never fault on its own address space. + * The kernel should never fault on its own address space, + * unless pagefault_disable() was called before. */ - if (fault_space == 0) + if (fault_space == 0 && !in_atomic()) { pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC); parisc_terminate("Kernel Fault", regs, code, fault_address); - } } -- cgit v1.2.3 From 2d8b22de6e5241a6f27f7f290f027223156a7d3f Mon Sep 17 00:00:00 2001 From: John David Anglin Date: Sat, 5 Oct 2013 10:55:36 -0400 Subject: parisc: optimize variable initialization in do_page_fault The attached change defers the initialization of the variables tsk, mm and flags until they are needed. As a result, the code won't crash if a kernel probe is done with a corrupt context and the code will be better optimized. Signed-off-by: John David Anglin Signed-off-by: Helge Deller --- arch/parisc/mm/fault.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c index 00c0ed333a3d..0293588d5b8c 100644 --- a/arch/parisc/mm/fault.c +++ b/arch/parisc/mm/fault.c @@ -171,20 +171,25 @@ void do_page_fault(struct pt_regs *regs, unsigned long code, unsigned long address) { struct vm_area_struct *vma, *prev_vma; - struct task_struct *tsk = current; - struct mm_struct *mm = tsk->mm; + struct task_struct *tsk; + struct mm_struct *mm; unsigned long acc_type; int fault; - unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE; + unsigned int flags; - if (in_atomic() || !mm) + if (in_atomic()) goto no_context; + tsk = current; + mm = tsk->mm; + if (!mm) + goto no_context; + + flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE; if (user_mode(regs)) flags |= FAULT_FLAG_USER; acc_type = parisc_acctyp(code, regs->iir); - if (acc_type & VM_WRITE) flags |= FAULT_FLAG_WRITE; retry: -- cgit v1.2.3 From db080f9c530f78dad661257885a1893506077068 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Wed, 9 Oct 2013 23:47:03 +0200 Subject: parisc: let probe_kernel_read() capture access to page zero Signed-off-by: Helge Deller --- arch/parisc/lib/memcpy.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/parisc/lib/memcpy.c b/arch/parisc/lib/memcpy.c index ac4370b1ca40..b5507ec06b84 100644 --- a/arch/parisc/lib/memcpy.c +++ b/arch/parisc/lib/memcpy.c @@ -56,7 +56,7 @@ #ifdef __KERNEL__ #include #include -#include +#include #define s_space "%%sr1" #define d_space "%%sr2" #else @@ -524,4 +524,17 @@ EXPORT_SYMBOL(copy_to_user); EXPORT_SYMBOL(copy_from_user); EXPORT_SYMBOL(copy_in_user); EXPORT_SYMBOL(memcpy); + +long probe_kernel_read(void *dst, const void *src, size_t size) +{ + unsigned long addr = (unsigned long)src; + + if (size < 0 || addr < PAGE_SIZE) + return -EFAULT; + + /* check for I/O space F_EXTEND(0xfff00000) access as well? */ + + return __probe_kernel_read(dst, src, size); +} + #endif -- cgit v1.2.3 From 4d594dd3028ba8cdfcbd854bde3811a1ee4e36d7 Mon Sep 17 00:00:00 2001 From: Yuvaraj Kumar C D Date: Wed, 18 Sep 2013 15:41:53 +0530 Subject: ARM: exynos: dts: Update 5250 arch timer node with clock frequency Without the "clock-frequency" property in arch timer node, could able to see the below crash dump. [] (unwind_backtrace+0x0/0xf4) from [] (show_stack+0x10/0x14) [] (show_stack+0x10/0x14) from [] (dump_stack+0x7c/0xb0) [] (dump_stack+0x7c/0xb0) from [] (Ldiv0_64+0x8/0x18) [] (Ldiv0_64+0x8/0x18) from [] (clockevents_config.part.2+0x1c/0x74) [] (clockevents_config.part.2+0x1c/0x74) from [] (clockevents_config_and_register+0x20/0x2c) [] (clockevents_config_and_register+0x20/0x2c) from [] (arch_timer_setup+0xa8/0x134) [] (arch_timer_setup+0xa8/0x134) from [] (arch_timer_init+0x1f4/0x24c) [] (arch_timer_init+0x1f4/0x24c) from [] (clocksource_of_init+0x34/0x58) [] (clocksource_of_init+0x34/0x58) from [] (time_init+0x20/0x2c) [] (time_init+0x20/0x2c) from [] (start_kernel+0x1e0/0x39c) THis is because the Exynos u-boot, for example on the Chromebooks, doesn't set up the CNTFRQ register as expected by arch_timer. Instead, we have to specify the frequency in the device tree like this. Signed-off-by: Yuvaraj Kumar C D [olof: Changed subject, added comment, elaborated on commit message] Signed-off-by: Olof Johansson --- arch/arm/boot/dts/exynos5250.dtsi | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch') diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index 7d7cc777ff7b..bbac42a78ce5 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -96,6 +96,11 @@ <1 14 0xf08>, <1 11 0xf08>, <1 10 0xf08>; + /* Unfortunately we need this since some versions of U-Boot + * on Exynos don't set the CNTFRQ register, so we need the + * value from DT. + */ + clock-frequency = <24000000>; }; mct@101C0000 { -- cgit v1.2.3 From 3c1532df5c1b54b5f6246cdef94eeb73a39fe43a Mon Sep 17 00:00:00 2001 From: AKASHI Takahiro Date: Wed, 9 Oct 2013 15:58:29 +0100 Subject: ARM: 7851/1: check for number of arguments in syscall_get/set_arguments() In ftrace_syscall_enter(), syscall_get_arguments(..., 0, n, ...) if (i == 0) { ...; n--;} memcpy(..., n * sizeof(args[0])); If 'number of arguments(n)' is zero and 'argument index(i)' is also zero in syscall_get_arguments(), none of arguments should be copied by memcpy(). Otherwise 'n--' can be a big positive number and unexpected amount of data will be copied. Tracing system calls which take no argument, say sync(void), may hit this case and eventually make the system corrupted. This patch fixes the issue both in syscall_get_arguments() and syscall_set_arguments(). Cc: Acked-by: Will Deacon Signed-off-by: AKASHI Takahiro Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/include/asm/syscall.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch') diff --git a/arch/arm/include/asm/syscall.h b/arch/arm/include/asm/syscall.h index f1d96d4e8092..73ddd7239b33 100644 --- a/arch/arm/include/asm/syscall.h +++ b/arch/arm/include/asm/syscall.h @@ -57,6 +57,9 @@ static inline void syscall_get_arguments(struct task_struct *task, unsigned int i, unsigned int n, unsigned long *args) { + if (n == 0) + return; + if (i + n > SYSCALL_MAX_ARGS) { unsigned long *args_bad = args + SYSCALL_MAX_ARGS - i; unsigned int n_bad = n + i - SYSCALL_MAX_ARGS; @@ -81,6 +84,9 @@ static inline void syscall_set_arguments(struct task_struct *task, unsigned int i, unsigned int n, const unsigned long *args) { + if (n == 0) + return; + if (i + n > SYSCALL_MAX_ARGS) { pr_warning("%s called with max args %d, handling only %d\n", __func__, i + n, SYSCALL_MAX_ARGS); -- cgit v1.2.3 From 80030e3d8ec6414790a5ec67ae4c5eeee82aba98 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Sun, 13 Oct 2013 18:36:29 +0200 Subject: x86/microcode: Correct Kconfig dependencies I have a randconfig here which has enabled only CONFIG_MICROCODE=y CONFIG_MICROCODE_OLD_INTERFACE=y with both # CONFIG_MICROCODE_INTEL is not set # CONFIG_MICROCODE_AMD is not set off. Which makes building the microcode functionality a little pointless. Don't do that in such cases then. Signed-off-by: Borislav Petkov Link: http://lkml.kernel.org/r/1381682189-14470-1-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 145d703227bf..f67e839f06c8 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1033,6 +1033,7 @@ config X86_REBOOTFIXUPS config MICROCODE tristate "CPU microcode loading support" + depends on CPU_SUP_AMD || CPU_SUP_INTEL select FW_LOADER ---help--- -- cgit v1.2.3 From dd3c9c4b603c664fedc12facf180db0f1794aafe Mon Sep 17 00:00:00 2001 From: Russ Anderson Date: Mon, 14 Oct 2013 11:17:34 -0500 Subject: x86: Update UV3 hub revision ID The UV3 hub revision ID is different than expected. The first revision was supposed to start at 1 but instead will start at 0. Signed-off-by: Russ Anderson Cc: # v3.9, v3.10, v3.11 Link: http://lkml.kernel.org/r/20131014161733.GA6274@sgi.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/apic/x2apic_uv_x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 1191ac1c9d25..a419814cea57 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -113,7 +113,7 @@ static int __init early_get_pnodeid(void) break; case UV3_HUB_PART_NUMBER: case UV3_HUB_PART_NUMBER_X: - uv_min_hub_revision_id += UV3_HUB_REVISION_BASE - 1; + uv_min_hub_revision_id += UV3_HUB_REVISION_BASE; break; } -- cgit v1.2.3 From cebf3e40b01bbf88d38dc954397414afaa280023 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Fri, 11 Oct 2013 09:27:27 +0200 Subject: Revert "ARM: init: add support for reserved memory defined by device tree" This reverts commit 10bcdfb8ba24760f715f0a700c3812747eddddf5. There is no consensus on the bindings for the reserved memory, so the code for handing it will be reverted. Signed-off-by: Marek Szyprowski Signed-off-by: Grant Likely --- arch/arm/mm/init.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'arch') diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index febaee7ca57b..18ec4c504abf 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -17,7 +17,6 @@ #include #include #include -#include #include #include #include @@ -379,8 +378,6 @@ void __init arm_memblock_init(struct meminfo *mi, if (mdesc->reserve) mdesc->reserve(); - early_init_dt_scan_reserved_mem(); - /* * reserve memory for DMA contigouos allocations, * must come from DMA area inside low memory -- cgit v1.2.3 From 3dbef3e3bf13d74582fe43548f5c570a0cec9b20 Mon Sep 17 00:00:00 2001 From: Raghavendra K T Date: Wed, 9 Oct 2013 14:33:21 +0530 Subject: KVM: Enable pvspinlock after jump_label_init() to avoid VM hang We use jump label to enable pv-spinlock. With the changes in (442e0973e927 Merge branch 'x86/jumplabel'), the jump label behaviour has changed that would result in eventual hang of the VM since we would end up in a situation where slow path locks would halt the vcpus but we will not be able to wakeup the vcpu by lock releaser using unlock kick. Similar problem in Xen and more detailed description is available in a945928ea270 (xen: Do not enable spinlocks before jump_label_init() has executed) This patch splits kvm_spinlock_init to separate jump label changes with pvops patching and also make jump label enabling after jump_label_init(). Signed-off-by: Raghavendra K T Reviewed-by: Paolo Bonzini Reviewed-by: Steven Rostedt Signed-off-by: Gleb Natapov --- arch/x86/kernel/kvm.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 697b93af02dd..a0e2a8a80c94 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -775,11 +775,22 @@ void __init kvm_spinlock_init(void) if (!kvm_para_has_feature(KVM_FEATURE_PV_UNHALT)) return; - printk(KERN_INFO "KVM setup paravirtual spinlock\n"); + pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(kvm_lock_spinning); + pv_lock_ops.unlock_kick = kvm_unlock_kick; +} + +static __init int kvm_spinlock_init_jump(void) +{ + if (!kvm_para_available()) + return 0; + if (!kvm_para_has_feature(KVM_FEATURE_PV_UNHALT)) + return 0; static_key_slow_inc(¶virt_ticketlocks_enabled); + printk(KERN_INFO "KVM setup paravirtual spinlock\n"); - pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(kvm_lock_spinning); - pv_lock_ops.unlock_kick = kvm_unlock_kick; + return 0; } +early_initcall(kvm_spinlock_init_jump); + #endif /* CONFIG_PARAVIRT_SPINLOCKS */ -- cgit v1.2.3 From af0ebc40a81c694ad25f034383c13a233c4a2f55 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Mon, 7 Oct 2013 16:15:29 +0200 Subject: s390/mm,kvm: fix software dirty bits vs. kvm for old machines For machines without enhanced supression on protection the software dirty bit code forces the pte dirty bit and clears the page protection bit in pgste_set_pte. This is done for all pte types, the check for present ptes is missing. As a result swap ptes and other not-present ptes can get corrupted. Add a check for the _PAGE_PRESENT bit to pgste_set_pte before modifying the pte value. Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/pgtable.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 9b60a36c348d..2204400d0bd5 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -748,7 +748,9 @@ static inline void pgste_set_key(pte_t *ptep, pgste_t pgste, pte_t entry) static inline void pgste_set_pte(pte_t *ptep, pte_t entry) { - if (!MACHINE_HAS_ESOP && (pte_val(entry) & _PAGE_WRITE)) { + if (!MACHINE_HAS_ESOP && + (pte_val(entry) & _PAGE_PRESENT) && + (pte_val(entry) & _PAGE_WRITE)) { /* * Without enhanced suppression-on-protection force * the dirty bit on for all writable ptes. -- cgit v1.2.3 From 0ebfd313fd4baf3fa1bd02d5f106e377595d4987 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 14 Oct 2013 12:09:37 +0200 Subject: s390/compat,signal: fix return value of copy_siginfo_(to|from)_user32() The return value of copy_siginfo_(to|from)_user32() gets passed to user space, however we do not convert a positive return value from copy_(to|from)_user to -EFAULT. Therefore these functions (and the calling system calls) my incorrectly return a positive number (bytes not copied) instead of -EFAULT. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/compat_signal.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index 1389b637dae5..adaa9e9478d8 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -99,7 +99,7 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from) break; } } - return err; + return err ? -EFAULT : 0; } int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) @@ -148,7 +148,7 @@ int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) break; } } - return err; + return err ? -EFAULT : 0; } static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs) -- cgit v1.2.3 From a446e72bc15c7bfd2c953e56064ace3566c79b0e Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Mon, 14 Oct 2013 21:35:44 +0200 Subject: Revert "parisc: Export flush_cache_page() (needed by lustre)" This reverts commit 320c90be7ba1c371e882edff57272a89b213d136. Christoph Hellwig commented: This one shouldn't go in - Geert sent it a bit prematurely, as Lustre shouldn't use it just to reimplement core VM functionality (which it shouldn't use either, but that's a separate story). Signed-off-by: Helge Deller --- arch/parisc/kernel/cache.c | 1 - 1 file changed, 1 deletion(-) (limited to 'arch') diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index b521c0adf4ec..c035673209f7 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -602,7 +602,6 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long __flush_cache_page(vma, vmaddr, PFN_PHYS(pfn)); } } -EXPORT_SYMBOL_GPL(flush_cache_page); #ifdef CONFIG_PARISC_TMPALIAS -- cgit v1.2.3 From c1b14041aa86800cfd9e21b280b0eaee885fa623 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Mon, 14 Oct 2013 22:55:36 +0200 Subject: parisc: enable DEVTMPFS, DEVTMPFS_MOUNT and BLK_DEV_INITRD in defconfigs Latest udev requires that DEVTMPFS and DEVTMPFS_MOUNT are enabled, else initrd will fail to find root filesystem. Enable missing BLK_DEV_INITRD for B180 and C3000 machines. Signed-off-by: Helge Deller --- arch/parisc/configs/712_defconfig | 2 ++ arch/parisc/configs/a500_defconfig | 2 ++ arch/parisc/configs/b180_defconfig | 3 +++ arch/parisc/configs/c3000_defconfig | 3 +++ arch/parisc/configs/c8000_defconfig | 2 ++ arch/parisc/configs/default_defconfig | 2 ++ 6 files changed, 14 insertions(+) (limited to 'arch') diff --git a/arch/parisc/configs/712_defconfig b/arch/parisc/configs/712_defconfig index 0f90569b9d85..9387cc2693f6 100644 --- a/arch/parisc/configs/712_defconfig +++ b/arch/parisc/configs/712_defconfig @@ -40,6 +40,8 @@ CONFIG_IP_NF_QUEUE=m CONFIG_LLC2=m CONFIG_NET_PKTGEN=m CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set CONFIG_PARPORT=y diff --git a/arch/parisc/configs/a500_defconfig b/arch/parisc/configs/a500_defconfig index b647b182dacc..90025322b75e 100644 --- a/arch/parisc/configs/a500_defconfig +++ b/arch/parisc/configs/a500_defconfig @@ -79,6 +79,8 @@ CONFIG_IP_DCCP=m CONFIG_LLC2=m CONFIG_NET_PKTGEN=m CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set CONFIG_BLK_DEV_UMEM=m diff --git a/arch/parisc/configs/b180_defconfig b/arch/parisc/configs/b180_defconfig index e289f5bf3148..f1a0c25bef8d 100644 --- a/arch/parisc/configs/b180_defconfig +++ b/arch/parisc/configs/b180_defconfig @@ -4,6 +4,7 @@ CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=16 CONFIG_SYSFS_DEPRECATED_V2=y +CONFIG_BLK_DEV_INITRD=y CONFIG_SLAB=y CONFIG_MODULES=y CONFIG_MODVERSIONS=y @@ -27,6 +28,8 @@ CONFIG_IP_PNP_BOOTP=y # CONFIG_INET_LRO is not set CONFIG_IPV6=y CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y # CONFIG_PREVENT_FIRMWARE_BUILD is not set CONFIG_PARPORT=y CONFIG_PARPORT_PC=y diff --git a/arch/parisc/configs/c3000_defconfig b/arch/parisc/configs/c3000_defconfig index 311ca367b622..ec1b014952b6 100644 --- a/arch/parisc/configs/c3000_defconfig +++ b/arch/parisc/configs/c3000_defconfig @@ -5,6 +5,7 @@ CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=16 CONFIG_SYSFS_DEPRECATED_V2=y +CONFIG_BLK_DEV_INITRD=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set CONFIG_EXPERT=y CONFIG_KALLSYMS_ALL=y @@ -39,6 +40,8 @@ CONFIG_NETFILTER_DEBUG=y CONFIG_IP_NF_QUEUE=m CONFIG_NET_PKTGEN=m CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set CONFIG_BLK_DEV_UMEM=m diff --git a/arch/parisc/configs/c8000_defconfig b/arch/parisc/configs/c8000_defconfig index f11006361297..e1c8d2015c89 100644 --- a/arch/parisc/configs/c8000_defconfig +++ b/arch/parisc/configs/c8000_defconfig @@ -62,6 +62,8 @@ CONFIG_TIPC=m CONFIG_LLC2=m CONFIG_DNS_RESOLVER=y CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set CONFIG_PARPORT=y CONFIG_PARPORT_PC=y diff --git a/arch/parisc/configs/default_defconfig b/arch/parisc/configs/default_defconfig index dfe88f6c95c4..ba61495e1fa4 100644 --- a/arch/parisc/configs/default_defconfig +++ b/arch/parisc/configs/default_defconfig @@ -49,6 +49,8 @@ CONFIG_INET6_ESP=y CONFIG_INET6_IPCOMP=y CONFIG_LLC2=m CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set CONFIG_PARPORT=y -- cgit v1.2.3 From 8c071b0f19dfa230335d22ce56a8fab5bd20cedc Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Thu, 17 Oct 2013 12:38:17 +0200 Subject: s390/time: correct use of store clock fast The result of the store-clock-fast (STCKF) instruction is a bit fuzzy. It can happen that the value stored on one CPU is smaller than the value stored on another CPU, although the order of the stores is the other way around. This can cause deltas of get_tod_clock() values to become negative when they should not be. We need to be more careful with store-clock-fast, this patch partially reverts git commit e4b7b4238e666682555461fa52eecd74652f36bb "time: always use stckf instead of stck if available". The get_tod_clock() function now uses the store-clock-extended (STCKE) instruction. get_tod_clock_fast() can be used if the fuzziness of store-clock-fast is acceptable e.g. for wait loops local to a CPU. Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/timex.h | 28 ++++++++++++++-------------- arch/s390/kernel/debug.c | 2 +- arch/s390/kvm/interrupt.c | 6 +++--- arch/s390/lib/delay.c | 14 +++++++------- drivers/s390/char/sclp.c | 4 ++-- drivers/s390/cio/cio.c | 4 ++-- drivers/s390/cio/qdio_main.c | 10 +++++----- 7 files changed, 34 insertions(+), 34 deletions(-) (limited to 'arch') diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h index 8ad8af915032..819b94d22720 100644 --- a/arch/s390/include/asm/timex.h +++ b/arch/s390/include/asm/timex.h @@ -71,30 +71,30 @@ static inline void local_tick_enable(unsigned long long comp) typedef unsigned long long cycles_t; -static inline unsigned long long get_tod_clock(void) -{ - unsigned long long clk; - -#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES - asm volatile(".insn s,0xb27c0000,%0" : "=Q" (clk) : : "cc"); -#else - asm volatile("stck %0" : "=Q" (clk) : : "cc"); -#endif - return clk; -} - static inline void get_tod_clock_ext(char *clk) { asm volatile("stcke %0" : "=Q" (*clk) : : "cc"); } -static inline unsigned long long get_tod_clock_xt(void) +static inline unsigned long long get_tod_clock(void) { unsigned char clk[16]; get_tod_clock_ext(clk); return *((unsigned long long *)&clk[1]); } +static inline unsigned long long get_tod_clock_fast(void) +{ +#ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES + unsigned long long clk; + + asm volatile("stckf %0" : "=Q" (clk) : : "cc"); + return clk; +#else + return get_tod_clock(); +#endif +} + static inline cycles_t get_cycles(void) { return (cycles_t) get_tod_clock() >> 2; @@ -125,7 +125,7 @@ extern u64 sched_clock_base_cc; */ static inline unsigned long long get_tod_clock_monotonic(void) { - return get_tod_clock_xt() - sched_clock_base_cc; + return get_tod_clock() - sched_clock_base_cc; } /** diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c index f1279dc2e1bc..17d62fe5d7b7 100644 --- a/arch/s390/kernel/debug.c +++ b/arch/s390/kernel/debug.c @@ -867,7 +867,7 @@ static inline void debug_finish_entry(debug_info_t * id, debug_entry_t* active, int level, int exception) { - active->id.stck = get_tod_clock(); + active->id.stck = get_tod_clock_fast(); active->id.fields.cpuid = smp_processor_id(); active->caller = __builtin_return_address(0); active->id.fields.exception = exception; diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index 7f35cb33e510..7f1f7ac5cf7f 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -385,7 +385,7 @@ static int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu) } if ((!rc) && (vcpu->arch.sie_block->ckc < - get_tod_clock() + vcpu->arch.sie_block->epoch)) { + get_tod_clock_fast() + vcpu->arch.sie_block->epoch)) { if ((!psw_extint_disabled(vcpu)) && (vcpu->arch.sie_block->gcr[0] & 0x800ul)) rc = 1; @@ -425,7 +425,7 @@ int kvm_s390_handle_wait(struct kvm_vcpu *vcpu) goto no_timer; } - now = get_tod_clock() + vcpu->arch.sie_block->epoch; + now = get_tod_clock_fast() + vcpu->arch.sie_block->epoch; if (vcpu->arch.sie_block->ckc < now) { __unset_cpu_idle(vcpu); return 0; @@ -515,7 +515,7 @@ void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu) } if ((vcpu->arch.sie_block->ckc < - get_tod_clock() + vcpu->arch.sie_block->epoch)) + get_tod_clock_fast() + vcpu->arch.sie_block->epoch)) __try_deliver_ckc_interrupt(vcpu); if (atomic_read(&fi->active)) { diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c index 57c87d7d7ede..a9f3d0042d58 100644 --- a/arch/s390/lib/delay.c +++ b/arch/s390/lib/delay.c @@ -44,7 +44,7 @@ static void __udelay_disabled(unsigned long long usecs) do { set_clock_comparator(end); vtime_stop_cpu(); - } while (get_tod_clock() < end); + } while (get_tod_clock_fast() < end); lockdep_on(); __ctl_load(cr0, 0, 0); __ctl_load(cr6, 6, 6); @@ -55,7 +55,7 @@ static void __udelay_enabled(unsigned long long usecs) { u64 clock_saved, end; - end = get_tod_clock() + (usecs << 12); + end = get_tod_clock_fast() + (usecs << 12); do { clock_saved = 0; if (end < S390_lowcore.clock_comparator) { @@ -65,7 +65,7 @@ static void __udelay_enabled(unsigned long long usecs) vtime_stop_cpu(); if (clock_saved) local_tick_enable(clock_saved); - } while (get_tod_clock() < end); + } while (get_tod_clock_fast() < end); } /* @@ -109,8 +109,8 @@ void udelay_simple(unsigned long long usecs) { u64 end; - end = get_tod_clock() + (usecs << 12); - while (get_tod_clock() < end) + end = get_tod_clock_fast() + (usecs << 12); + while (get_tod_clock_fast() < end) cpu_relax(); } @@ -120,10 +120,10 @@ void __ndelay(unsigned long long nsecs) nsecs <<= 9; do_div(nsecs, 125); - end = get_tod_clock() + nsecs; + end = get_tod_clock_fast() + nsecs; if (nsecs & ~0xfffUL) __udelay(nsecs >> 12); - while (get_tod_clock() < end) + while (get_tod_clock_fast() < end) barrier(); } EXPORT_SYMBOL(__ndelay); diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c index a3aa374799dc..1fe264379e0d 100644 --- a/drivers/s390/char/sclp.c +++ b/drivers/s390/char/sclp.c @@ -486,7 +486,7 @@ sclp_sync_wait(void) timeout = 0; if (timer_pending(&sclp_request_timer)) { /* Get timeout TOD value */ - timeout = get_tod_clock() + + timeout = get_tod_clock_fast() + sclp_tod_from_jiffies(sclp_request_timer.expires - jiffies); } @@ -508,7 +508,7 @@ sclp_sync_wait(void) while (sclp_running_state != sclp_running_state_idle) { /* Check for expired request timer */ if (timer_pending(&sclp_request_timer) && - get_tod_clock() > timeout && + get_tod_clock_fast() > timeout && del_timer(&sclp_request_timer)) sclp_request_timer.function(sclp_request_timer.data); cpu_relax(); diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index d7da67a31c77..88e35d85d205 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -878,9 +878,9 @@ static void css_reset(void) atomic_inc(&chpid_reset_count); } /* Wait for machine check for all channel paths. */ - timeout = get_tod_clock() + (RCHP_TIMEOUT << 12); + timeout = get_tod_clock_fast() + (RCHP_TIMEOUT << 12); while (atomic_read(&chpid_reset_count) != 0) { - if (get_tod_clock() > timeout) + if (get_tod_clock_fast() > timeout) break; cpu_relax(); } diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 8ed52aa49122..bbd3e511c771 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -338,10 +338,10 @@ again: retries++; if (!start_time) { - start_time = get_tod_clock(); + start_time = get_tod_clock_fast(); goto again; } - if ((get_tod_clock() - start_time) < QDIO_BUSY_BIT_PATIENCE) + if (get_tod_clock_fast() - start_time < QDIO_BUSY_BIT_PATIENCE) goto again; } if (retries) { @@ -504,7 +504,7 @@ static int get_inbound_buffer_frontier(struct qdio_q *q) int count, stop; unsigned char state = 0; - q->timestamp = get_tod_clock(); + q->timestamp = get_tod_clock_fast(); /* * Don't check 128 buffers, as otherwise qdio_inbound_q_moved @@ -595,7 +595,7 @@ static inline int qdio_inbound_q_done(struct qdio_q *q) * At this point we know, that inbound first_to_check * has (probably) not moved (see qdio_inbound_processing). */ - if (get_tod_clock() > q->u.in.timestamp + QDIO_INPUT_THRESHOLD) { + if (get_tod_clock_fast() > q->u.in.timestamp + QDIO_INPUT_THRESHOLD) { DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in done:%02x", q->first_to_check); return 1; @@ -728,7 +728,7 @@ static int get_outbound_buffer_frontier(struct qdio_q *q) int count, stop; unsigned char state = 0; - q->timestamp = get_tod_clock(); + q->timestamp = get_tod_clock_fast(); if (need_siga_sync(q)) if (((queue_type(q) != QDIO_IQDIO_QFMT) && -- cgit v1.2.3