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2d7cc19eebc182dbdda228aa26eb5bfff97ac072
linux/arch/arm64/include/asm
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Steve Capper f3eab7184d arm64: percpu: Make this_cpu accessors pre-empt safe 
this_cpu operations were implemented for arm64 in:
 5284e1b arm64: xchg: Implement cmpxchg_double
 f97fc81 arm64: percpu: Implement this_cpu operations

Unfortunately, it is possible for pre-emption to take place between
address generation and data access. This can lead to cases where data
is being manipulated by this_cpu for a different CPU than it was
called on. Which effectively breaks the spec.

This patch disables pre-emption for the this_cpu operations
guaranteeing that address generation and data manipulation take place
without a pre-emption in-between.

Fixes: 5284e1b4bc ("arm64: xchg: Implement cmpxchg_double")
Fixes: f97fc81079 ("arm64: percpu: Implement this_cpu operations")
Reported-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Steve Capper <steve.capper@linaro.org>
[catalin.marinas@arm.com: remove space after type cast]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-03-24 18:02:55 +00:00
..
xen
xen/arm/arm64: merge xen/mm32.c into xen/mm.c
2014-12-04 12:41:53 +00:00
alternative-asm.h
arm64: add Cortex-A53 cache errata workaround
2014-11-25 15:56:21 +00:00
alternative.h
arm64: add module support for alternatives fixups
2014-12-04 10:28:24 +00:00
arch_timer.h
arm64: fix missing linux/bug.h include in asm/arch_timer.h
2015-01-07 11:40:59 +00:00
asm-offsets.h
…
assembler.h
arm64: guard asm/assembler.h against multiple inclusions
2015-02-23 09:13:51 +00:00
atomic.h
locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read()
2014-10-03 06:06:23 +02:00
barrier.h
arch: Add lightweight memory barriers dma_rmb() and dma_wmb()
2014-12-11 21:15:06 -05:00
bitops.h
arch,arm64: Convert smp_mb__*()
2014-04-18 11:40:33 +02:00
bitrev.h
ARM: 8189/1: arm64:add bitrev.h file to support rbit instruction
2014-12-22 16:47:32 +00:00
cache.h
arm64: Implement support for read-mostly sections
2014-12-03 10:19:35 +00:00
cacheflush.h
arm64: add better page protections to arm64
2015-01-22 14:54:29 +00:00
cachetype.h
arm64: kernel: add support for cpu cache information
2015-01-15 11:55:07 +00:00
cmpxchg.h
arm64: percpu: Make this_cpu accessors pre-empt safe
2015-03-24 18:02:55 +00:00
compat.h
arm64: compat: Remove incorrect comment in compat_siginfo
2015-02-02 16:44:39 +00:00
compiler.h
arm64: Miscellaneous header files
2012-09-17 13:42:21 +01:00
cpu_ops.h
arm64: kernel: remove ARM64_CPU_SUSPEND config option
2015-01-27 11:35:33 +00:00
cpu.h
arm64: sanity checks: add missing AArch32 registers
2015-01-07 11:40:58 +00:00
cpufeature.h
arm64: Track system support for mixed endian EL0
2015-01-23 17:02:19 +00:00
cpuidle.h
arm64: cpuidle: add asm/proc-fns.h inclusion
2015-02-27 18:05:56 +00:00
cputable.h
arm64: CPU support
2012-09-17 13:41:59 +01:00
cputype.h
arm64: Emulate SETEND for AArch32 tasks
2015-01-23 17:11:44 +00:00
debug-monitors.h
arm64: Fix typos in KGDB macros
2014-09-25 15:35:41 +01:00
device.h
arm64: introduce is_device_dma_coherent
2014-12-04 12:41:49 +00:00
dma-mapping.h
arm64: Combine coherent and non-coherent swiotlb dma_ops
2015-01-23 16:43:55 +00:00
dmi.h
arm64: dmi: Add SMBIOS/DMI support
2014-11-05 09:03:25 +01:00
efi.h
arm64/efi: move virtmap init to early initcall
2015-01-22 14:59:25 +00:00
elf.h
arm64: ASLR: Don't randomise text when randomise_va_space == 0
2014-10-24 15:47:49 +01:00
esr.h
Merge tag 'kvm-arm-for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-next
2015-01-23 13:39:51 +01:00
exception.h
arm64: Use irqchip_init() for interrupt controller initialisation
2013-03-26 16:02:23 +00:00
exec.h
arm64: Miscellaneous header files
2012-09-17 13:42:21 +01:00
fb.h
arm64: Device specific operations
2012-09-17 13:42:04 +01:00
fixmap.h
arm64: use fixmap for text patching
2015-01-22 11:50:56 +00:00
fpsimd.h
arm64: add support for kernel mode NEON in interrupt context
2014-05-08 11:31:57 +02:00
fpsimdmacros.h
arm64: Avoid breakage caused by .altmacro in fpsimd save/restore macros
2015-01-29 17:24:39 +00:00
ftrace.h
arm64: ftrace: Add system call tracepoint
2014-05-29 09:08:33 +01:00
futex.h
arm64: asm: remove redundant "cc" clobbers
2014-02-07 16:46:07 +00:00
hardirq.h
smp, ARM64: Kill SMP single function call interrupt
2015-01-23 18:06:47 +00:00
hugetlb.h
ARM64: mm: HugeTLB support.
2013-06-14 09:52:40 +01:00
hw_breakpoint.h
arm64: ptrace: fix compat hardware watchpoint reporting
2014-08-28 20:01:36 +01:00
hwcap.h
arm64: Add COMPAT_HWCAP_LPAE
2014-11-17 10:43:42 +00:00
hypervisor.h
arm64/xen: introduce asm/xen header files on arm64
2013-06-07 10:39:45 +00:00
insn.h
arm64: insn: fix compare-and-branch encodings
2015-02-23 09:13:45 +00:00
io.h
arm64: Fix overlapping VA allocations
2015-01-23 14:13:14 +00:00
irq_work.h
arm64: Fix compilation error on UP builds
2014-10-21 17:01:07 +01:00
irq.h
arm64/include/asm: Fixed a warning about 'struct pt_regs'
2014-12-04 10:10:59 +00:00
irqflags.h
arm64: Add macros to manage processor debug state
2014-02-26 11:16:25 +00:00
jump_label.h
arm64, jump label: optimize jump label implementation
2014-01-08 15:23:53 +00:00
Kbuild
Merge branch 'irq-irqdomain-arm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-12-15 17:30:09 -08:00
kgdb.h
arm64: Fix typos in KGDB macros
2014-09-25 15:35:41 +01:00
kvm_arm.h
arm64: KVM: Fix outdated comment about VTCR_EL2.PS
2015-03-11 14:24:37 +01:00
kvm_asm.h
KVM: arm64: ARMv8 header changes for page logging
2015-01-16 14:42:48 +01:00
kvm_coproc.h
arm64: KVM: common infrastructure for handling AArch32 CP14/CP15
2014-07-11 04:57:44 -07:00
kvm_emulate.h
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2015-02-13 09:55:09 -08:00
kvm_host.h
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2015-02-13 09:55:09 -08:00
kvm_mmio.h
arm/arm64: KVM: add opaque private pointer to MMIO data
2015-01-20 18:25:30 +01:00
kvm_mmu.h
arm64: KVM: Do not use pgd_index to index stage-2 pgd
2015-03-11 14:24:36 +01:00
kvm_psci.h
ARM/ARM64: KVM: Make kvm_psci_call() return convention more flexible
2014-04-30 04:18:57 -07:00
linkage.h
arm64: fix alignment padding in assembly code
2012-10-20 11:12:01 +01:00
memblock.h
arm64: MMU initialisation
2012-09-17 13:41:56 +01:00
memory.h
arm64: Fix overlapping VA allocations
2015-01-23 14:13:14 +00:00
mmu_context.h
arm64: Use the reserved TTBR0 if context switching to the init_mm
2015-03-23 18:42:23 +00:00
mmu.h
arm64/efi: remove idmap manipulations from UEFI code
2015-01-12 16:29:32 +00:00
module.h
arm64: Loadable modules
2012-09-17 13:42:19 +01:00
neon.h
arm64: add support for kernel mode NEON in interrupt context
2014-05-08 11:31:57 +02:00
opcodes.h
arm64: Add AArch32 instruction set condition code checks
2014-11-20 16:33:45 +00:00
page.h
arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area
2014-08-08 15:57:27 -07:00
pci.h
arm64: Add architectural support for PCI
2014-09-30 17:08:57 -06:00
percpu.h
arm64: percpu: Make this_cpu accessors pre-empt safe
2015-03-24 18:02:55 +00:00
perf_event.h
arm64: perf: add guest vs host discrimination
2013-01-29 16:56:17 +00:00
pgalloc.h
arm64: pgalloc: consistently use PGALLOC_GFP
2014-11-20 12:05:18 +00:00
pgtable-hwdef.h
KVM: arm64: ARMv8 header changes for page logging
2015-01-16 14:42:48 +01:00
pgtable-types.h
arm64: Remove asm/pgtable-*level-types.h files
2014-07-23 15:27:56 +01:00
pgtable.h
arm64: enable PTE type bit in the mask for pte_modify
2015-02-26 18:30:12 +00:00
pmu.h
arm64: Performance counters support
2012-09-17 13:42:17 +01:00
proc-fns.h
arm64: efi: don't restore TTBR0 if active_mm points at init_mm
2015-03-20 17:05:16 +00:00
processor.h
arm64: Increase the swiotlb buffer size 64MB
2015-02-27 18:05:55 +00:00
psci.h
PSCI: Add initial support for PSCIv0.2 functions
2014-05-15 10:16:00 -04:00
ptrace.h
arm64: Emulate SETEND for AArch32 tasks
2015-01-23 17:11:44 +00:00
seccomp.h
arm64: add seccomp support
2014-11-28 10:24:59 +00:00
shmparam.h
arm64: ELF definitions
2012-09-17 13:42:07 +01:00
signal32.h
arm64: Use get_signal() signal_setup_done()
2014-08-06 12:56:16 +02:00
smp_plat.h
arm64: kernel: build MPIDR_EL1 hash function data structure
2013-12-16 17:17:30 +00:00
smp.h
arm64: Tell irq work about self IPI support
2014-09-13 18:46:13 +02:00
sparsemem.h
arm64: mm: update max pa bits to 48
2014-08-19 20:23:02 +01:00
spinlock_types.h
arm64: Fix the endianness of arch_spinlock_t
2013-10-25 16:10:22 +01:00
spinlock.h
arm64/spinlock: Replace ACCESS_ONCE READ_ONCE
2014-12-18 09:54:40 +01:00
stackprotector.h
arm64: Add CONFIG_CC_STACKPROTECTOR
2014-07-09 12:23:48 +01:00
stacktrace.h
arm64: Exception handling
2012-09-17 10:24:46 +01:00
stat.h
UAPI: (Scripted) Disintegrate arch/arm64/include/asm
2012-10-11 11:05:13 +01:00
string.h
arm64: lib: Implement optimized string length routines
2014-05-23 15:17:12 +01:00
suspend.h
arm64: kernel: remove ARM64_CPU_SUSPEND config option
2015-01-27 11:35:33 +00:00
sync_bitops.h
arm64/xen: introduce asm/xen header files on arm64
2013-06-07 10:39:45 +00:00
syscall.h
arm64: Add audit support
2014-07-10 11:06:00 +01:00
sysreg.h
arm64: gicv3: Allow GICv3 compilation with older binutils
2014-07-25 13:12:15 +01:00
system_misc.h
arm64: use common reboot infrastructure
2013-07-19 15:57:08 +01:00
thread_info.h
all arches, signal: move restart_block to struct task_struct
2015-02-12 18:54:12 -08:00
timex.h
arm64: kernel: compiling issue, need delete read_current_timer()
2013-06-10 17:58:20 +01:00
tlb.h
arm64: Invalidate the TLB corresponding to intermediate page table levels
2015-03-14 10:48:30 +00:00
tlbflush.h
arm64: Invalidate the TLB corresponding to intermediate page table levels
2015-03-14 10:48:30 +00:00
topology.h
arm64: sched: Remove unused mc_capable() and smt_capable()
2014-05-16 17:12:04 +01:00
traps.h
arm64: Add support for hooks to handle undefined instructions
2014-11-20 16:33:43 +00:00
uaccess.h
arm64: macro whitespace fixes
2015-01-13 15:23:53 +02:00
unistd32.h
arm64: compat: wire up compat_sys_execveat
2015-01-12 16:46:21 +00:00
unistd.h
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2015-02-11 18:03:54 -08:00
vdso_datapage.h
arm64: VDSO support
2012-09-17 13:42:09 +01:00
vdso.h
arm64: VDSO support
2012-09-17 13:42:09 +01:00
virt.h
arm64: KVM: remove __kvm_hyp_code_{start,end} from hyp.S
2014-07-11 04:57:35 -07:00
word-at-a-time.h
arm64: dcache: select DCACHE_WORD_ACCESS for little-endian CPUs
2013-12-19 17:43:08 +00:00