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Message-Id: <20070720153256.DACA614E7B@wotan.suse.de> Date: Fri, 20 Jul 2007 17:32:56 +0200 (CEST) From: Andi Kleen <ak@...e.de> To: patches@...-64.org, linux-kernel@...r.kernel.org Subject: [PATCH] [11/11] i386: Use patchable lock prefix in set_64bit Previously lock was unconditionally used, but shouldn't be needed on UP systems. Signed-off-by: Andi Kleen <ak@...e.de> Index: linux/include/asm-i386/cmpxchg.h =================================================================== --- linux.orig/include/asm-i386/cmpxchg.h +++ linux/include/asm-i386/cmpxchg.h @@ -34,7 +34,7 @@ static inline void __set_64bit (unsigned "\n1:\t" "movl (%0), %%eax\n\t" "movl 4(%0), %%edx\n\t" - "lock cmpxchg8b (%0)\n\t" + LOCK_PREFIX "cmpxchg8b (%0)\n\t" "jnz 1b" : /* no outputs */ : "D"(ptr), - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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