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2013-02-26Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds1-1/+2
Pull GPIO changes from Grant Likely: "This branch contains the usual set of individual driver improvements and bug fixes, as well as updates to the core code. The more notable changes include: - Internally add new API for referencing GPIOs by gpio_desc instead of number. Eventually this will become a public API - ACPI GPIO binding support" * tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux: (33 commits) arm64: select ARCH_WANT_OPTIONAL_GPIOLIB gpio: em: Use irq_domain_add_simple() to fix runtime error gpio: using common order: let 'static const' instead of 'const static' gpio/vt8500: memory cleanup missing gpiolib: Fix locking on gpio debugfs files gpiolib: let gpio_chip reference its descriptors gpiolib: use descriptors internally gpiolib: use gpio_chips list in gpiochip_find_base gpiolib: use gpio_chips list in sysfs ops gpiolib: use gpio_chips list in gpiochip_find gpiolib: use gpio_chips list in gpiolib_sysfs_init gpiolib: link all gpio_chips using a list gpio/langwell: cleanup driver gpio/langwell: Add Cloverview ids to pci device table gpio/lynxpoint: add chipset gpio driver. gpiolib: add missing braces in gpio_direction_show gpiolib-acpi: Fix error checks in interrupt requesting gpio: mpc8xxx: don't set IRQ_TYPE_NONE when creating irq mapping gpiolib: remove gpiochip_reserve() arm: pxa: tosa: do not use gpiochip_reserve() ...
2013-02-26Merge tag 'modules-next-for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module update from Rusty Russell: "The sweeping change is to make add_taint() explicitly indicate whether to disable lockdep, but it's a mechanical change." * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: MODSIGN: Add option to not sign modules during modules_install MODSIGN: Add -s <signature> option to sign-file MODSIGN: Specify the hash algorithm on sign-file command line MODSIGN: Simplify Makefile with a Kconfig helper module: clean up load_module a little more. modpost: Ignore ARC specific non-alloc sections module: constify within_module_* taint: add explicit flag to show whether lock dep is still OK. module: printk message when module signature fail taints kernel.
2013-02-24Merge branch 'for-linus' of ↵Linus Torvalds9-250/+8
git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal Pull signal handling cleanups from Al Viro: "This is the first pile; another one will come a bit later and will contain SYSCALL_DEFINE-related patches. - a bunch of signal-related syscalls (both native and compat) unified. - a bunch of compat syscalls switched to COMPAT_SYSCALL_DEFINE (fixing several potential problems with missing argument validation, while we are at it) - a lot of now-pointless wrappers killed - a couple of architectures (cris and hexagon) forgot to save altstack settings into sigframe, even though they used the (uninitialized) values in sigreturn; fixed. - microblaze fixes for delivery of multiple signals arriving at once - saner set of helpers for signal delivery introduced, several architectures switched to using those." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (143 commits) x86: convert to ksignal sparc: convert to ksignal arm: switch to struct ksignal * passing alpha: pass k_sigaction and siginfo_t using ksignal pointer burying unused conditionals make do_sigaltstack() static arm64: switch to generic old sigaction() (compat-only) arm64: switch to generic compat rt_sigaction() arm64: switch compat to generic old sigsuspend arm64: switch to generic compat rt_sigqueueinfo() arm64: switch to generic compat rt_sigpending() arm64: switch to generic compat rt_sigprocmask() arm64: switch to generic sigaltstack sparc: switch to generic old sigsuspend sparc: COMPAT_SYSCALL_DEFINE does all sign-extension as well as SYSCALL_DEFINE sparc: kill sign-extending wrappers for native syscalls kill sparc32_open() sparc: switch to use of generic old sigaction sparc: switch sys_compat_rt_sigaction() to COMPAT_SYSCALL_DEFINE mips: switch to generic sys_fork() and sys_clone() ...
2013-02-24memory-hotplug: remove memmap of sparse-vmemmapTang Chen1-0/+3
Introduce a new API vmemmap_free() to free and remove vmemmap pagetables. Since pagetable implements are different, each architecture has to provide its own version of vmemmap_free(), just like vmemmap_populate(). Note: vmemmap_free() is not implemented for ia64, ppc, s390, and sparc. [mhocko@suse.cz: fix implicit declaration of remove_pagetable] Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Jianguo Wu <wujianguo@huawei.com> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Wu Jianguo <wujianguo@huawei.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-22arm64: select ARCH_WANT_OPTIONAL_GPIOLIBArnd Bergmann1-1/+2
An architecture should not unconditionally enable 'GENERIC_GPIO' without providing an implementation. In case of arm64, selecting ARCH_WANT_OPTIONAL_GPIOLIB is the right solution, because it lets us enable GPIOLIB when configuring the kernel, and that implicitly turns on GENERIC_GPIO. Reported-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-22Merge tag 'virt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds4-102/+161
Pull ARM virtualization changes: "This contains parts of the ARM KVM support that have dependencies on other patches merged through the arm-soc tree. In combination with patches coming through Russell's tree, this will finally add full support for the kernel based virtual machine on ARM, which has been awaited for some time now. Further, we now have a separate platform for virtual machines and qemu booting that is used by both Xen and KVM, separating these from the Versatile Express reference implementation. Obviously, this new platform is multiplatform capable so it can be combined with existing machines in the same kernel." * tag 'virt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (38 commits) ARM: arch_timer: include linux/errno.h arm: arch_timer: add missing inline in stub function ARM: KVM: arch_timers: Wire the init code and config option ARM: KVM: arch_timers: Add timer world switch ARM: KVM: arch_timers: Add guest timer core support ARM: KVM: Add VGIC configuration option ARM: KVM: VGIC initialisation code ARM: KVM: VGIC control interface world switch ARM: KVM: VGIC interrupt injection ARM: KVM: vgic: retire queued, disabled interrupts ARM: KVM: VGIC virtual CPU interface management ARM: KVM: VGIC distributor handling ARM: KVM: VGIC accept vcpu and dist base addresses from user space ARM: KVM: Initial VGIC infrastructure code ARM: KVM: Keep track of currently running vcpus KVM: ARM: Introduce KVM_ARM_SET_DEVICE_ADDR ioctl ARM: gic: add __ASSEMBLY__ guard to C definitions ARM: gic: define GICH offsets for VGIC support ARM: gic: add missing distributor defintions ARM: mach-virt: fixup machine descriptor after removal of sys_timer ...
2013-02-21Merge tag 'arm64-for-linus' of ↵Linus Torvalds28-173/+853
git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64 Pull arm64 patches from Catalin Marinas: - SMP support for the PSCI booting protocol (power state coordination interface). - Simple earlyprintk support. - Platform devices populated by default from the DT (SoC-agnostic). - CONTEXTIDR support (used by external trace tools). * tag 'arm64-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: arm64: mm: update CONTEXTIDR register to contain PID of current process arm64: atomics: fix grossly inconsistent asm constraints for exclusives arm64: compat: use compat_uptr_t type for compat_ucontext.uc_link arm64: Select ARCH_WANT_FRAME_POINTERS arm64: Add kvm_para.h and xor.h generic headers arm64: SMP: enable PSCI boot method arm64: psci: add support for PSCI invocations from the kernel arm64: SMP: rework the SMP code to be enabling method agnostic arm64: perf: add guest vs host discrimination arm64: add COMPAT_PSR_*_BIT flags arm64: Add simple earlyprintk support arm64: Populate the platform devices
2013-02-20Merge tag 'pm+acpi-3.9-rc1' of ↵Linus Torvalds1-9/+4
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management updates from Rafael Wysocki: - Rework of the ACPI namespace scanning code from Rafael J. Wysocki with contributions from Bjorn Helgaas, Jiang Liu, Mika Westerberg, Toshi Kani, and Yinghai Lu. - ACPI power resources handling and ACPI device PM update from Rafael J Wysocki. - ACPICA update to version 20130117 from Bob Moore and Lv Zheng with contributions from Aaron Lu, Chao Guan, Jesper Juhl, and Tim Gardner. - Support for Intel Lynxpoint LPSS from Mika Westerberg. - cpuidle update from Len Brown including Intel Haswell support, C1 state for intel_idle, removal of global pm_idle. - cpuidle fixes and cleanups from Daniel Lezcano. - cpufreq fixes and cleanups from Viresh Kumar and Fabio Baltieri with contributions from Stratos Karafotis and Rickard Andersson. - Intel P-states driver for Sandy Bridge processors from Dirk Brandewie. - cpufreq driver for Marvell Kirkwood SoCs from Andrew Lunn. - cpufreq fixes related to ordering issues between acpi-cpufreq and powernow-k8 from Borislav Petkov and Matthew Garrett. - cpufreq support for Calxeda Highbank processors from Mark Langsdorf and Rob Herring. - cpufreq driver for the Freescale i.MX6Q SoC and cpufreq-cpu0 update from Shawn Guo. - cpufreq Exynos fixes and cleanups from Jonghwan Choi, Sachin Kamat, and Inderpal Singh. - Support for "lightweight suspend" from Zhang Rui. - Removal of the deprecated power trace API from Paul Gortmaker. - Assorted updates from Andreas Fleig, Colin Ian King, Davidlohr Bueso, Joseph Salisbury, Kees Cook, Li Fei, Nishanth Menon, ShuoX Liu, Srinivas Pandruvada, Tejun Heo, Thomas Renninger, and Yasuaki Ishimatsu. * tag 'pm+acpi-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (267 commits) PM idle: remove global declaration of pm_idle unicore32 idle: delete stray pm_idle comment openrisc idle: delete pm_idle mn10300 idle: delete pm_idle microblaze idle: delete pm_idle m32r idle: delete pm_idle, and other dead idle code ia64 idle: delete pm_idle cris idle: delete idle and pm_idle ARM64 idle: delete pm_idle ARM idle: delete pm_idle blackfin idle: delete pm_idle sparc idle: rename pm_idle to sparc_idle sh idle: rename global pm_idle to static sh_idle x86 idle: rename global pm_idle to static x86_idle APM idle: register apm_cpu_idle via cpuidle cpufreq / intel_pstate: Add kernel command line option disable intel_pstate. cpufreq / intel_pstate: Change to disallow module build tools/power turbostat: display SMI count by default intel_idle: export both C1 and C1E ACPI / hotplug: Fix concurrency issues and memory leaks ...
2013-02-20Merge branch 'irq-core-for-linus' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq core changes from Ingo Molnar: "The biggest changes are the IRQ-work and printk changes from Frederic Weisbecker, which prepare the code for 'full dynticks' (the ability to stop or slow down the periodic tick arbitrarily, not just in idle time as today): - Don't stop tick with irq works pending. This fix is generally useful and concerns archs that can't raise self IPIs. - Flush irq works before CPU offlining. - Introduce "lazy" irq works that can wait for the next tick to be executed, unless it's stopped. - Implement klogd wake up using irq work. This removes the ad-hoc printk_tick()/printk_needs_cpu() hooks and make it working even in dynticks mode. - Cleanups and fixes." * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Export enable/disable_percpu_irq() arch Kconfig: Remove references to IRQ_PER_CPU irq_work: Remove return value from the irq_work_queue() function genirq: Avoid deadlock in spurious handling printk: Wake up klogd using irq_work irq_work: Make self-IPIs optable irq_work: Warn if there's still work on cpu_down irq_work: Flush work on CPU_DYING irq_work: Don't stop the tick with pending works nohz: Add API to check tick state irq_work: Remove CONFIG_HAVE_IRQ_WORK irq_work: Fix racy check on work pending flag irq_work: Fix racy IRQ_WORK_BUSY flag setting
2013-02-18ARM64 idle: delete pm_idleLen Brown1-9/+4
pm_idle() on arm64 was a synonym for default_idle(), so remove it and invoke default_idle() directly. Signed-off-by: Len Brown <len.brown@intel.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
2013-02-14burying unused conditionalsAl Viro2-7/+0
__ARCH_WANT_SYS_RT_SIGACTION, __ARCH_WANT_SYS_RT_SIGSUSPEND, __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND, __ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL - not used anymore CONFIG_GENERIC_{SIGALTSTACK,COMPAT_RT_SIG{ACTION,QUEUEINFO,PENDING,PROCMASK}} - can be assumed always set.
2013-02-14arm64: switch to generic old sigaction() (compat-only)Al Viro2-45/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-14arm64: switch to generic compat rt_sigaction()Al Viro2-41/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-14arm64: switch compat to generic old sigsuspendAl Viro3-13/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-14arm64: switch to generic compat rt_sigqueueinfo()Al Viro2-18/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-14arm64: switch to generic compat rt_sigpending()Al Viro2-18/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-14arm64: switch to generic compat rt_sigprocmask()Al Viro2-33/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-14arm64: switch to generic sigaltstackAl Viro8-80/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-11arm64: mm: update CONTEXTIDR register to contain PID of current processWill Deacon3-1/+26
This patch is a port of 575320d62 ("ARM: 7445/1: mm: update CONTEXTIDR register to contain PID of current process") from ARM that introduces a new Kconfig option which, when enabled, causes the kernel to write the PID of the current task into the CONTEXTIDR register on context switch. This is useful when analysing hardware trace, since writes to this register can be configured to emit an event into the trace stream. Signed-off-by: Will Deacon <will.deacon@arm.com> [catalin.marinas@arm.com: contextidr_thread_switch() moved to mmu_context.h] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-02-11arm64: atomics: fix grossly inconsistent asm constraints for exclusivesWill Deacon4-143/+143
Our uses of inline asm constraints for atomic operations are fairly wild and varied. We basically need to guarantee the following: 1. Any instructions with barrier implications (load-acquire/store-release) have a "memory" clobber 2. When performing exclusive accesses, the addresing mode is generated using the "Q" constraint 3. Atomic blocks which use the condition flags, have a "cc" clobber This patch addresses these concerns which, as well as fixing the semantics of the code, stops GCC complaining about impossible asm constraints. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-02-11arm64: compat: use compat_uptr_t type for compat_ucontext.uc_linkWill Deacon1-2/+2
struct compat_ucontext * is a 64-bit pointer, so we need to use a compat_uptr_t instead to avoid declaring a structure incompatible with what AArch32 userspace expects. Cc: <stable@vger.kernel.org> Reported-by: Edmund Grimley-Evans <Edmund.Grimley-Evans@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-02-01Merge branch 'for-will/arch-timer-unification' of ↵Will Deacon4-102/+161
git://linux-arm.org/linux-mr into for-arm-soc/arch-timers
2013-01-31arm64: move from arm_generic to arm_arch_timerMark Rutland4-104/+161
The arch_timer driver supports a superset of the functionality of the arm_generic driver, and is not tied to a particular arch. This patch moves arm64 to use the arch_timer driver, gaining additional functionality in doing so, and removes the (now unused) arm_generic driver. Timer-related hooks specific to arm64 are moved into arch/arm64/kernel/time.c. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2013-01-31arm64: arm_generic: prevent reading stale timeMark Rutland1-0/+2
Currently arch_counter_get_cnt{p,v}ct can be speculated, allowing for stale time values to be read. This could be problematic for the delay loop and other sensitive functions, as the time delta could jump around unexpectedly. This patch adds isbs to arch_counter_get_cnt{p,v}ct, preventing this possibility. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-29arm64: Select ARCH_WANT_FRAME_POINTERSCatalin Marinas1-0/+1
The compiler generates framepointers by default anyway but this is to avoid a kbuild warning. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-29arm64: Add kvm_para.h and xor.h generic headersCatalin Marinas2-0/+5
Required for make allyesconfig. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-29arm64: SMP: enable PSCI boot methodMarc Zyngier4-1/+55
Wire the PSCI implementation into the SMP secondary startup code. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-29arm64: psci: add support for PSCI invocations from the kernelWill Deacon4-1/+253
This patch adds support for the Power State Coordination Interface defined by ARM, allowing Linux to request CPU-centric power-management operations from firmware implementing the PSCI protocol. Signed-off-by: Will Deacon <will.deacon@arm.com> [Marc: s/u32/u64/ in the relevant spots, and switch from an initcall to an simpler init function] Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-29arm64: SMP: rework the SMP code to be enabling method agnosticMarc Zyngier4-23/+123
In order to introduce PSCI support, let the SMP code handle multiple enabling methods. This also allow CPUs to be booted using different methods (though this feels a bit weird...). In the process, move the spin-table code to its own file. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-29arm64: perf: add guest vs host discriminationMarc Zyngier2-1/+43
Add minimal guest support to perf, so it can distinguish whether the PMU interrupt was in the host or the guest, as well as collecting some very basic information (guest PC, user vs kernel mode). This is not feature complete though, as it doesn't support backtracing in the guest. Based on the x86 implementation, tested with KVM/arm64. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-29arm64: add COMPAT_PSR_*_BIT flagsMarc Zyngier1-0/+10
In order to mess with the processor state when running 32bit guests, define all the AArch32 PSR flags. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-24Merge branch 'core/irq_work' of ↵Ingo Molnar1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks into irq/core irq_work fixes and cleanups, in preparation for full dyntics support. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-01-22arm64: Add simple earlyprintk supportCatalin Marinas8-2/+185
This patch adds support for "earlyprintk=" parameter on the kernel command line. The format is: earlyprintk=<name>[,<addr>][,<options>] where <name> is the name of the (UART) device, e.g. "pl011", <addr> is the I/O address. The <options> aren't currently used. The mapping of the earlyprintk device is done very early during kernel boot and there are restrictions on which functions it can call. A special early_io_map() function is added which creates the mapping from the pre-defined EARLY_IOBASE to the device I/O address passed via the kernel parameter. The pgd entry corresponding to EARLY_IOBASE is pre-populated in head.S during kernel boot. Only PL011 is currently supported and it is assumed that the interface is already initialised by the boot loader before the kernel is started. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
2013-01-22arm64: Populate the platform devicesCatalin Marinas1-0/+8
This patch add a device_initcall() to populate the platform devices (of_default_bus_match_table). This allows SoC implementations that do not require earlier initcalls to avoid any platform-specific code under arch/arm64. GIC and generic timer initialisation is done via FDT and CPU notifiers independently of the SoC code. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
2013-01-22arm64: elf: fix core dumping to match what glibc expectsWill Deacon1-1/+4
The kernel's internal definition of ELF_NGREG uses struct pt_regs, which means that we disagree with userspace on the size of coredumps since glibc correctly uses the user-visible struct user_pt_regs. This patch fixes our ELF_NGREG definition to use struct user_pt_regs and introduces our own ELF_CORE_COPY_REGS to convert between the user and kernel structure definitions. Cc: <stable@vger.kernel.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-21taint: add explicit flag to show whether lock dep is still OK.Rusty Russell1-1/+1
Fix up all callers as they were before, with make one change: an unsigned module taints the kernel, but doesn't turn off lockdep. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2013-01-16Merge tag 'arm64-fixes' of ↵Linus Torvalds4-23/+26
git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64 Pull arm64 fixes from Catalin Marinas: - Page protection fixes, including proper PAGE_NONE handling - Timezone vdso sequence counting fix - Additional compat syscall wiring * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: arm64: compat: add syscall table entries for new syscalls arm64: mm: introduce present, faulting entries for PAGE_NONE arm64: mm: only wrprotect clean ptes if they are present arm64: vdso: remove broken, redundant sequence counting for timezones
2013-01-15arm64: compat: add syscall table entries for new syscallsWill Deacon1-1/+6
There have been a number of new syscalls introduced to arch/arm/ since the compat layer was implemented for arm64, so add pointers to the relevant functions to the compat syscall table. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-14arm64: dts: prevent *.dtb from always being rebuiltStephen Warren1-0/+1
if_changed (used by the *.dts->*.dtc rule) rebuilds files if they aren't contained in $(targets). (make V=2 indicates this). Add $(dtb-y) to $(targets) to prevent *.dtb from always being rebuilt. Note This fixes a regression introduced by the .dtb rule rework in da4cbc6 "arm64: use new common dtc rule", although since arm64 doesn't actually have any *.dts yet, this isn't a critical issue. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-01-10arm64: mm: introduce present, faulting entries for PAGE_NONEWill Deacon1-11/+13
This is mostly a port of dbf62d50067e ("ARM: mm: introduce L_PTE_VALID for page table entries") and 26ffd0d43b18 ("ARM: mm: introduce present, faulting entries for PAGE_NONE") from ARM, which makes use of present, faulting page table entries for page table entries mapped as PROT_NONE. The main difference with this implementation is that we can make use of the two pte type bits in order to avoid allocating a software bit for identifying PROT_NONE pages, instead reserving the 10b suffix for these types of mappings. This is required to prevent users from accessing such pages via syscalls such as read/write over a pipe. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-10arm64: mm: only wrprotect clean ptes if they are presentWill Deacon1-7/+9
Marking non-present ptes as read-only can corrupt file ptes, breaking things like swap and file mappings. This patch ensures that we only manipulate user pte bits when the pte is marked present. Cc: <stable@vger.kernel.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-10arm64: vdso: remove broken, redundant sequence counting for timezonesWill Deacon2-6/+0
This patch is an arm64 version of ce73ec6db47a ("powerpc/vdso: Remove redundant locking in update_vsyscall_tz()"). Timezone data is not protected, so the sequence counter is not required to ensure consistency. Furthermore, having multiple paths updating the counter leads to a race between update_vsyscall and update_vsyscall_tz, so remove the timezone sequence counting from both the kernel and the vdso. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-04Merge tag 'arm64-fixes' of ↵Linus Torvalds2-1/+6
git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64 Pull ARM64 fixes from Catalin Marinas: - Missing include in asm/compat.h. - Kconfig updates. * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: arm64: Always select ARM_AMBA and GENERIC_GPIO arm64: Keep the ARM64 Kconfig selects sorted arm64: Include linux/ptrace.h in asm/compat.h
2013-01-04arm64: Always select ARM_AMBA and GENERIC_GPIOCatalin Marinas1-0/+4
Needed for most SoCs. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-04ARCH: drivers remove __dev* attributes.Greg Kroah-Hartman1-1/+1
This fixes up all of the smaller arches that had __dev* markings for their platform-specific drivers. CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: Lennox Wu <lennox.wu@gmail.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Bob Liu <lliubbo@gmail.com> Cc: Srinivas Kandagatla <srinivas.kandagatla@st.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Myron Stowe <myron.stowe@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Thierry Reding <thierry.reding@avionic-design.de> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com> Cc: Mark Salter <msalter@redhat.com> Cc: Yong Zhang <yong.zhang0@gmail.com> Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Jan Glauber <jang@linux.vnet.ibm.com> Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-02arm64: Keep the ARM64 Kconfig selects sortedCatalin Marinas1-1/+1
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-02arm64: Include linux/ptrace.h in asm/compat.hCatalin Marinas1-0/+1
Commit 9b064fc3f95a8e44e929fdf4d6037334ea03d15b (new helper: compat_user_stack_pointer()) introduces a call to current_pt_regs() which is defined in linux/ptrace.h, not currently included asm/compat.h. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2012-12-21Merge branch 'for-linus' of ↵Linus Torvalds3-5/+3
git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal Pull signal handling cleanups from Al Viro: "sigaltstack infrastructure + conversion for x86, alpha and um, COMPAT_SYSCALL_DEFINE infrastructure. Note that there are several conflicts between "unify SS_ONSTACK/SS_DISABLE definitions" and UAPI patches in mainline; resolution is trivial - just remove definitions of SS_ONSTACK and SS_DISABLED from arch/*/uapi/asm/signal.h; they are all identical and include/uapi/linux/signal.h contains the unified variant." Fixed up conflicts as per Al. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: alpha: switch to generic sigaltstack new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those generic compat_sys_sigaltstack() introduce generic sys_sigaltstack(), switch x86 and um to it new helper: compat_user_stack_pointer() new helper: restore_altstack() unify SS_ONSTACK/SS_DISABLE definitions new helper: current_user_stack_pointer() missing user_stack_pointer() instances Bury the conditionals from kernel_thread/kernel_execve series COMPAT_SYSCALL_DEFINE: infrastructure
2012-12-20Merge tag 'iommu-updates-v3.8' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: "A few new features this merge-window. The most important one is probably, that dma-debug now warns if a dma-handle is not checked with dma_mapping_error by the device driver. This requires minor changes to some architectures which make use of dma-debug. Most of these changes have the respective Acks by the Arch-Maintainers. Besides that there are updates to the AMD IOMMU driver for refactor the IOMMU-Groups support and to make sure it does not trigger a hardware erratum. The OMAP changes (for which I pulled in a branch from Tony Lindgren's tree) have a conflict in linux-next with the arm-soc tree. The conflict is in the file arch/arm/mach-omap2/clock44xx_data.c which is deleted in the arm-soc tree. It is safe to delete the file too so solve the conflict. Similar changes are done in the arm-soc tree in the common clock framework migration. A missing hunk from the patch in the IOMMU tree will be submitted as a seperate patch when the merge-window is closed." * tag 'iommu-updates-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (29 commits) ARM: dma-mapping: support debug_dma_mapping_error ARM: OMAP4: hwmod data: ipu and dsp to use parent clocks instead of leaf clocks iommu/omap: Adapt to runtime pm iommu/omap: Migrate to hwmod framework iommu/omap: Keep mmu enabled when requested iommu/omap: Remove redundant clock handling on ISR iommu/amd: Remove obsolete comment iommu/amd: Don't use 512GB pages iommu/tegra: smmu: Move bus_set_iommu after probe for multi arch iommu/tegra: gart: Move bus_set_iommu after probe for multi arch iommu/tegra: smmu: Remove unnecessary PTC/TLB flush all tile: dma_debug: add debug_dma_mapping_error support sh: dma_debug: add debug_dma_mapping_error support powerpc: dma_debug: add debug_dma_mapping_error support mips: dma_debug: add debug_dma_mapping_error support microblaze: dma-mapping: support debug_dma_mapping_error ia64: dma_debug: add debug_dma_mapping_error support c6x: dma_debug: add debug_dma_mapping_error support ARM64: dma_debug: add debug_dma_mapping_error support intel-iommu: Prevent devices with RMRRs from being placed into SI Domain ...
2012-12-20new helper: compat_user_stack_pointer()Al Viro1-2/+3
Compat counterpart of current_user_stack_pointer(); for most of the biarch architectures those two are identical, but e.g. arm64 and arm use different registers for stack pointer... Note that amd64 variants of current_user_stack_pointer/compat_user_stack_pointer do *not* rely on pt_regs having been through FIXUP_TOP_OF_STACK. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>