Commit-ID: 9c76b38476b18c45f97098a10b0176b321eba3ea Gitweb: http://git.kernel.org/tip/9c76b38476b18c45f97098a10b0176b321eba3ea Author: Luca Barbieri <luca@xxxxxxxxxxxxxxxxx> AuthorDate: Wed, 24 Feb 2010 10:54:23 +0100 Committer: H. Peter Anvin <hpa@xxxxxxxxx> CommitDate: Thu, 25 Feb 2010 20:47:03 -0800 x86-32: Allow UP/SMP lock replacement in cmpxchg64 Use the functionality just introduced in the previous patch: mark the lock prefixes in cmpxchg64 alternatives for UP removal. Changes in v2: - Naming change Signed-off-by: Luca Barbieri <luca@xxxxxxxxxxxxxxxxx> LKML-Reference: <1267005265-27958-3-git-send-email-luca@xxxxxxxxxxxxxxxxx> Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx> --- 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), \ -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html