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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2009-09-03 14:31:44 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-04 07:10:31 +0200 |
| commit | 53f824520b6d84ca5b4a8fd71addc91dbf64357e (patch) | |
| tree | fc62733de8040f13cf450b6cae967976da31827b /arch | |
| parent | 1ea0d14e480c245683927eecc03a70faf06e80c8 (diff) | |
| download | linux-3.10-53f824520b6d84ca5b4a8fd71addc91dbf64357e.tar.gz linux-3.10-53f824520b6d84ca5b4a8fd71addc91dbf64357e.tar.bz2 linux-3.10-53f824520b6d84ca5b4a8fd71addc91dbf64357e.zip | |
x86/i386: Put aligned stack-canary in percpu shared_aligned section
Pack aligned things together into a special section to minimize
padding holes.
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Tejun Heo <tj@kernel.org>
LKML-Reference: <4AA035C0.9070202@goop.org>
[ queued up in tip:x86/asm because it depends on this commit:
x86/i386: Make sure stack-protector segment base is cache aligned ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index e597ecc8753..ac7e79654f3 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -413,7 +413,7 @@ struct stack_canary { char __pad[20]; /* canary at %gs:20 */ unsigned long canary; }; -DECLARE_PER_CPU(struct stack_canary, stack_canary) ____cacheline_aligned; +DECLARE_PER_CPU_ALIGNED(struct stack_canary, stack_canary); #endif #endif /* X86_64 */ diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 7d84bc4c118..f23e236391a 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1043,7 +1043,7 @@ DEFINE_PER_CPU(struct orig_ist, orig_ist); #else /* CONFIG_X86_64 */ #ifdef CONFIG_CC_STACKPROTECTOR -DEFINE_PER_CPU(struct stack_canary, stack_canary) ____cacheline_aligned; +DEFINE_PER_CPU_ALIGNED(struct stack_canary, stack_canary); #endif /* Make sure %fs and %gs are initialized properly in idle threads */ |