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Subject[PATCH 2/4] x86-32: allow UP/SMP lock replacement in cmpxchg64 (v2)
Date
Changes in v2:
- Naming change

Use the functionality just introduced in the previous patch.

Signed-off-by: Luca Barbieri <luca@luca-barbieri.com>
---
arch/x86/include/asm/cmpxchg_32.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/x86/include/asm/cmpxchg_32.h b/arch/x86/include/asm/cmpxchg_32.h
index ffb9bb6..8859e12 100644
--- a/arch/x86/include/asm/cmpxchg_32.h
+++ b/arch/x86/include/asm/cmpxchg_32.h
@@ -271,7 +271,8 @@ extern unsigned long long cmpxchg_486_u64(volatile void *, u64, u64);
__typeof__(*(ptr)) __ret; \
__typeof__(*(ptr)) __old = (o); \
__typeof__(*(ptr)) __new = (n); \
- alternative_io("call cmpxchg8b_emu", \
+ alternative_io(LOCK_PREFIX_HERE \
+ "call cmpxchg8b_emu", \
"lock; cmpxchg8b (%%esi)" , \
X86_FEATURE_CX8, \
"=A" (__ret), \
--
1.6.6.1.476.g01ddb


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