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bdae73cd374e28db544fdd9b77de689a36e3c129
linux/arch/arm/include/asm
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Catalin Marinas bdae73cd37 ARM: 7790/1: Fix deferred mm switch on VIVT processors 
As of commit b9d4d42ad9 (ARM: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW on
pre-ARMv6 CPUs), the mm switching on VIVT processors is done in the
finish_arch_post_lock_switch() function to avoid whole cache flushing
with interrupts disabled. The need for deferred mm switch is stored as a
thread flag (TIF_SWITCH_MM). However, with preemption enabled, we can
have another thread switch before finish_arch_post_lock_switch(). If the
new thread has the same mm as the previous 'next' thread, the scheduler
will not call switch_mm() and the TIF_SWITCH_MM flag won't be set for
the new thread.

This patch moves the switch pending flag to the mm_context_t structure
since this is specific to the mm rather than thread.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Tested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: <stable@vger.kernel.org> # 3.5+
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-07-26 12:02:09 +01:00
..
hardware
reboot: arm: change reboot_mode to use enum reboot_mode
2013-07-09 10:33:29 -07:00
mach
reboot: arm: change reboot_mode to use enum reboot_mode
2013-07-09 10:33:29 -07:00
xen
xen/arm and xen/arm64: implement HYPERVISOR_tmem_op
2013-07-04 11:41:12 +00:00
a.out-core.h
ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump
2011-03-10 15:16:29 +00:00
arch_timer.h
arm: delete __cpuinit/__CPUINIT usage from all ARM users
2013-07-14 19:36:52 -04:00
asm-offsets.h
kbuild: move asm-offsets.h to include/generated
2009-12-12 13:08:14 +01:00
assembler.h
ARM: Add base support for ARMv7-M
2013-04-17 21:38:10 +02:00
atomic.h
ARM: 7687/1: atomics: don't use exclusives for atomic64 read/set with LPAE
2013-04-03 17:00:00 +01:00
barrier.h
ARM: kill off arch_is_coherent
2012-10-02 08:58:07 +02:00
bitops.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
bug.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
bugs.h
…
cache.h
ARM: implement support for read-mostly sections
2010-12-05 08:39:36 +00:00
cacheflush.h
ARM: 7755/1: handle user space mapped pages in flush_kernel_dcache_page
2013-06-17 10:30:52 +01:00
cachetype.h
ARM: 7062/1: cache: detect PIPT I-cache using CTR
2011-10-17 09:13:41 +01:00
checksum.h
…
clkdev.h
ARM: Consolidate the clkdev header files
2011-07-19 18:09:45 +02:00
cmpxchg.h
ARM: 7720/1: ARM v6/v7 cmpxchg64 shouldn't clear upper 32 bits of the old/new value
2013-05-13 23:42:24 +01:00
compiler.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
cp15.h
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
2013-07-03 09:46:29 -07:00
cpu.h
ARM: kernel: add MIDR to per-CPU information data
2012-11-19 14:51:11 +00:00
cpuidle.h
cpuidle: Add common time keeping and irq enabling
2012-03-21 01:59:40 -04:00
cputype.h
Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2013-07-02 13:43:38 -07:00
cti.h
ARM: coresight: common definition for (OS) Lock Access Register key value
2013-01-10 21:13:05 +00:00
delay.h
ARM: 7685/1: delay: use private ticks_per_jiffy field for timer-based delay ops
2013-04-03 16:45:50 +01:00
device.h
ARM: dma-mapping: Add macro to_dma_iommu_mapping()
2013-02-25 15:30:41 +01:00
div64.h
ARM: 7705/1: use optimized do_div only for EABI
2013-05-15 19:35:53 +01:00
dma-contiguous.h
ARM: integrate CMA with DMA-mapping subsystem
2012-05-21 15:09:38 +02:00
dma-iommu.h
ARM: dma-mapping: Add arm_iommu_detach_device()
2013-02-25 15:30:41 +01:00
dma-mapping.h
Merge tag 'iommu-updates-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
2012-12-20 10:07:25 -08:00
dma.h
ARM: disable virt_to_bus/virt_to_bus almost everywhere
2013-02-14 15:04:33 +01:00
domain.h
ARM: fix set_domain() macro
2012-07-05 09:50:55 +01:00
ecard.h
ARM: io: ecard: move ioaddr() inside __ecard_address
2011-08-17 08:44:16 +01:00
edac.h
ARM: 7201/1: add EDAC atomic_scrub function
2011-12-11 08:35:50 +00:00
elf.h
ARM: 7294/1: vectors: use gate_vma for vectors user mapping
2012-03-24 09:38:51 +00:00
entry-macro-multi.S
ARM: gic: consolidate PPI handling
2011-10-23 13:32:29 +01:00
exception.h
ARM: 7115/4: move __exception and friends to asm/exception.h
2011-10-17 09:02:44 +01:00
fb.h
…
fiq.h
ARM: 6940/1: fiq: Briefly document driver responsibilities for suspend/resume
2011-05-26 10:31:06 +01:00
firmware.h
ARM: Add interface for registering and calling firmware-specific operations
2013-04-09 01:52:06 +09:00
fixmap.h
[ARM] fixmap support
2009-03-15 21:01:20 -04:00
flat.h
ARM: binfmt_flat: unused variable 'persistent'
2012-10-09 20:29:06 +02:00
floppy.h
[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
2008-08-07 09:55:48 +01:00
fncpy.h
ARM: 6640/1: Thumb-2: Symbol manipulation macros for function body copying
2011-01-27 11:48:58 +00:00
fpstate.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
ftrace.h
ARM: 6319/1: ftrace: add Thumb-2 support to dynamic ftrace
2010-09-02 15:28:43 +01:00
futex.h
ARM: 7425/1: extable: ensure fixup entries are 4-byte aligned
2012-06-16 16:30:25 +01:00
glue-cache.h
Merge branch 'for-next' of git://git.pengutronix.de/git/ukl/linux into devel-stable
2013-05-22 10:52:24 +01:00
glue-df.h
ARM: Add base support for ARMv7-M
2013-04-17 21:38:10 +02:00
glue-pf.h
ARM: move cache/processor/fault glue to separate include files
2011-02-12 11:52:21 +00:00
glue-proc.h
Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2013-07-02 13:43:38 -07:00
glue.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
gpio.h
ARM: make mach/gpio.h headers optional
2012-09-14 09:21:59 -05:00
hardirq.h
ARM: 7536/1: smp: Formalize an IPI for wakeup
2012-09-19 21:52:08 +01:00
highmem.h
ARM: 7684/1: errata: Workaround for Cortex-A15 erratum 798181 (TLBI/DSB operations)
2013-04-03 16:45:49 +01:00
hugetlb-3level.h
ARM: mm: HugeTLB support for LPAE systems.
2013-06-04 16:52:37 +01:00
hugetlb.h
ARM: mm: HugeTLB support for LPAE systems.
2013-06-04 16:52:37 +01:00
hw_breakpoint.h
ARM: hw_breakpoint: Check function for OS Save and Restore mechanism
2013-01-10 21:13:06 +00:00
hw_irq.h
arm: dove: Use proper irq accessor functions
2011-03-29 14:47:57 +02:00
hwcap.h
UAPI: (Scripted) Disintegrate arch/arm/include/asm
2012-10-12 13:05:52 +01:00
hypervisor.h
arm: initial Xen support
2012-09-14 13:53:39 +00:00
ide.h
…
idmap.h
ARM: KVM: move to a KVM provided HYP idmap
2013-04-28 22:23:08 -07:00
io.h
ARM: 7728/1: mm: Use phys_addr_t properly for ioremap functions
2013-05-23 00:09:44 +01:00
irq.h
arm: Move the set_handle_irq and handle_arch_irq declarations to asm/irq.h
2013-03-26 16:11:20 +00:00
irqflags.h
ARM: Add base support for ARMv7-M
2013-04-17 21:38:10 +02:00
jump_label.h
ARM: 7386/1: jump_label: fixup for rename to static_key
2012-04-15 22:00:31 +01:00
Kbuild
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
2012-12-12 11:30:02 -08:00
kexec.h
[ARM] add machine-specific hook to machine_kexec
2011-03-03 16:26:55 -05:00
kgdb.h
kgdb,arm: fix register dump
2010-10-29 13:14:40 -05:00
kmap_types.h
arm: remove km_type definitions
2012-07-24 15:27:28 +08:00
kprobes.h
Kernel: Audit Support For The ARM Platform
2012-01-17 16:17:01 -05:00
kvm_arm.h
ARM: KVM: get rid of S2_PGD_SIZE
2013-06-26 10:50:04 -07:00
kvm_asm.h
ARM: KVM: perform save/restore of PAR
2013-06-26 10:50:04 -07:00
kvm_coproc.h
KVM: ARM: User space API for getting/setting co-proc registers
2013-01-23 13:29:14 -05:00
kvm_emulate.h
ARM: KVM: don't special case PC when doing an MMIO
2013-06-26 10:50:03 -07:00
kvm_host.h
arm/kvm: Cleanup KVM_ARM_MAX_VCPUS logic
2013-06-26 10:50:05 -07:00
kvm_mmio.h
KVM: ARM: Handle I/O aborts
2013-01-23 13:29:17 -05:00
kvm_mmu.h
ARM: KVM: perform HYP initilization for hotplugged CPUs
2013-04-28 22:23:11 -07:00
kvm_psci.h
KVM: ARM: Power State Coordination Interface implementation
2013-01-23 13:29:18 -05:00
limits.h
…
linkage.h
…
localtimer.h
ARM: local timers: make the runtime registration interface mandatory
2012-03-13 13:45:55 +00:00
mach-types.h
arm: move mach-types to include/generated
2009-12-12 13:08:14 +01:00
mc146818rtc.h
ARM: mc146818rtc: remove unnecessary include of mach/irqs.h
2012-01-25 20:37:45 -06:00
mcpm.h
ARM: mcpm: provide an interface to set the SMP ops at run time
2013-04-24 10:37:03 -04:00
memblock.h
ARM: Add arm_memblock_steal() to allocate memory away from the kernel
2012-01-13 15:02:35 +00:00
memory.h
mm/ARM: fix stale comment about VALID_PAGE()
2013-07-03 16:07:39 -07:00
mmu_context.h
ARM: 7790/1: Fix deferred mm switch on VIVT processors
2013-07-26 12:02:09 +01:00
mmu.h
ARM: 7790/1: Fix deferred mm switch on VIVT processors
2013-07-26 12:02:09 +01:00
module.h
Make most arch asm/module.h files use asm-generic/module.h
2012-09-28 14:31:03 +09:30
mpu.h
ARM: mpu: protect the vectors page with an MPU region
2013-06-17 15:13:18 +01:00
mtd-xip.h
[ARM] move asm/xip.h's mach/hardware.h include to mach/xip.h
2008-12-14 13:22:51 +00:00
mutex.h
ARM: 7495/1: mutex: use generic atomic_dec-based implementation for ARMv6+
2012-08-25 09:22:31 +01:00
nwflash.h
…
opcodes-sec.h
ARM: opcodes: add opcodes definitions for ARM security extensions
2013-01-10 21:10:20 +00:00
opcodes-virt.h
ARM: opcodes: add __ERET/__MSR_ELR_HYP instruction encoding
2012-09-19 08:32:49 +01:00
opcodes.h
ARM: opcodes: add missing include of linux/linkage.h
2013-01-10 21:10:20 +00:00
outercache.h
ARM: 7639/1: cache-l2x0: add missed dummy outer_resume entry
2013-02-06 09:33:07 +00:00
page-nommu.h
nommu: Remove the memory_start/end variables from ARM page-nommu.h
2009-07-24 12:35:01 +01:00
page.h
ARM: LPAE: use signed arithmetic for mask definitions
2013-05-30 16:01:30 +01:00
pci.h
PCI: collapse pcibios_resource_to_bus
2012-02-23 20:19:04 -07:00
percpu.h
ARM: 7747/1: pcpu: ensure __my_cpu_offset cannot be re-ordered across barrier()
2013-06-05 23:35:56 +01:00
perf_event.h
ARM: 7584/1: perf: fix link error when CONFIG_HW_PERF_EVENTS is not selected
2012-11-23 13:01:30 +00:00
pgalloc.h
ARM: LPAE: Page table maintenance for the 3-level format
2011-12-08 10:30:39 +00:00
pgtable-2level-hwdef.h
ARM: 7077/1: LPAE: Use a mask for physical addresses in page table entries
2011-10-06 15:40:06 +01:00
pgtable-2level-types.h
ARM: 7076/1: LPAE: Add (pte|pmd)val_t type definitions as u32
2011-10-06 15:40:05 +01:00
pgtable-2level.h
ARM: mm: introduce present, faulting entries for PAGE_NONE
2012-11-09 14:13:20 +00:00
pgtable-3level-hwdef.h
Merge branch 'for-rmk/lpae' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable
2013-06-18 20:11:32 +01:00
pgtable-3level-types.h
ARM: LPAE: Introduce the 3-level page table format definitions
2011-12-08 10:30:39 +00:00
pgtable-3level.h
Merge branch 'for-rmk/lpae' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable
2013-06-18 20:11:32 +01:00
pgtable-hwdef.h
ARM: LPAE: Introduce the 3-level page table format definitions
2011-12-08 10:30:39 +00:00
pgtable-nommu.h
consolidate io_remap_pfn_range definitions
2013-06-29 12:46:35 +04:00
pgtable.h
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
2013-07-03 09:46:29 -07:00
pmu.h
ARM: perf: consistently use arm_pmu->name for PMU name
2012-11-09 11:37:26 +00:00
proc-fns.h
Merge branch 'for-rmk/lpae' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable
2013-06-18 20:11:32 +01:00
processor.h
arm: split ret_from_fork, simplify kernel_thread() [based on patch by rmk]
2012-09-30 22:21:36 -04:00
procinfo.h
…
prom.h
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
2012-12-12 11:30:02 -08:00
psci.h
arm: introduce psci_smp_ops
2013-05-21 14:24:11 +00:00
ptrace.h
ARM: Add base support for ARMv7-M
2013-04-17 21:38:10 +02:00
scatterlist.h
ARM: Allow SoCs to enable scatterlist chaining
2011-06-02 11:16:22 +01:00
sched_clock.h
sched_clock: Add temporary asm/sched_clock.h
2013-06-21 10:17:44 -07:00
seccomp.h
ARM: SECCOMP support
2010-10-01 22:32:18 -04:00
setup.h
UAPI: (Scripted) Disintegrate arch/arm/include/asm
2012-10-12 13:05:52 +01:00
shmparam.h
…
signal.h
arm: switch to generic old sigaction()
2013-02-03 18:15:47 -05:00
smp_plat.h
Merge branch 'devel-stable' into for-next
2013-06-29 11:44:43 +01:00
smp_scu.h
ARM: scu: provide inline dummy functions when SCU is not present
2013-07-04 05:10:51 -07:00
smp_twd.h
ARM: smp_twd: convert to use CLKSRC_OF init
2013-03-11 08:42:08 -05:00
smp.h
ARM: mpu: add MPU initialisation for secondary cores
2013-06-07 17:02:53 +01:00
sparsemem.h
[ARM] mm: enable sparsemem on clps7500 and RiscPC
2008-10-01 17:24:04 +01:00
spinlock_types.h
ARM: 7446/1: spinlock: use ticket algorithm for ARMv6+ locking implementation
2012-07-09 17:41:10 +01:00
spinlock.h
ARM: 7749/1: spinlock: retry trylock operation if strex fails on free lock
2013-06-17 09:27:04 +01:00
stackprotector.h
ARM: initial stack protector (-fstack-protector) support
2010-06-14 21:31:00 -04:00
stacktrace.h
[ARM] 5382/1: unwind: Reorganise the stacktrace support
2009-02-12 13:21:17 +00:00
string.h
[ARM] remove memzero()
2008-11-27 12:37:59 +00:00
suspend.h
ARM: kernel: implement stack pointer save array through MPIDR hashing
2013-06-20 11:24:11 +01:00
swab.h
UAPI: (Scripted) Disintegrate arch/arm/include/asm
2012-10-12 13:05:52 +01:00
switch_to.h
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
sync_bitops.h
xen/arm: sync_bitops
2012-08-08 16:34:01 +00:00
syscall.h
ARM: 7577/1: arch/add syscall_get_arch
2012-11-19 14:14:17 +00:00
system_info.h
ARM: Add base support for ARMv7-M
2013-04-17 21:38:10 +02:00
system_misc.h
reboot: arm: change reboot_mode to use enum reboot_mode
2013-07-09 10:33:29 -07:00
system.h
the only place that needs to include asm/exec.h is linux/binfmts.h
2012-09-20 09:51:13 -04:00
tcm.h
ARM: 6985/1: export functions to determine the presence of I/DTCM
2011-07-06 20:49:45 +01:00
therm.h
…
thread_info.h
ARM: 7790/1: Fix deferred mm switch on VIVT processors
2013-07-26 12:02:09 +01:00
thread_notify.h
ARM: 6867/1: Introduce THREAD_NOTIFY_COPY for copy_thread() hooks
2011-04-10 21:13:36 +01:00
timex.h
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
2012-10-07 21:20:57 +09:00
tlb.h
Merge branch 'devel-stable' into for-next
2013-06-29 11:44:43 +01:00
tlbflush.h
ARM: 7789/1: Do not run dummy_flush_tlb_a15_erratum() on non-Cortex-A15
2013-07-26 12:02:09 +01:00
tls.h
ARM: 7735/2: Preserve the user r/w register TPIDRURW on context switch and fork
2013-06-24 15:21:59 +01:00
topology.h
ARM: 7182/1: ARM cpu topology: fix warning
2011-11-30 23:55:21 +00:00
traps.h
ARM: earlier initialization of vectors page
2012-01-23 10:24:11 +00:00
uaccess.h
ARM: warnings in arch/arm/include/asm/uaccess.h
2012-10-09 20:29:07 +02:00
ucontext.h
Fix common misspellings
2011-03-31 11:26:23 -03:00
unified.h
ARM: make BSYM macro assembly only
2012-01-16 08:56:25 -06:00
unistd.h
consolidate cond_syscall and SYSCALL_ALIAS declarations
2013-03-03 22:55:19 -05:00
unwind.h
ARM: 7187/1: fix unwinding for XIP kernels
2011-12-06 11:16:13 +00:00
user.h
ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump
2011-03-10 15:16:29 +00:00
v7m.h
ARM: Add base support for ARMv7-M
2013-04-17 21:38:10 +02:00
vfp.h
…
vfpmacros.h
ARM: 7566/1: vfp: fix save and restore when running on pre-VFPv3 and CONFIG_VFPv3 set
2012-10-29 10:04:05 +00:00
vga.h
ARM: set vga memory base at run-time
2011-07-12 11:19:29 -05:00
virt.h
ARM: 7787/1: virt: ensure visibility of __boot_cpu_mode
2013-07-26 12:01:17 +01:00
word-at-a-time.h
ARM: 7450/1: dcache: select DCACHE_WORD_ACCESS for little-endian ARMv6+ CPUs
2012-07-09 17:41:11 +01:00
xor.h
…