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Date: 27 Sep 2006 21:38:03 +0200 From: Andi Kleen <ak@...e.de> To: Rolf Eike Beer <eike-kernel@...tec.de> Cc: len.brown@...el.com, linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org, akpm@...l.org Subject: Re: [BUG] Oops on boot (probably ACPI related) Rolf Eike Beer <eike-kernel@...tec.de> writes: > I get this on my machine. SMP kernel, linus git from this morning. .config and > test available on request. What gcc do you use? Anyways, does this patch fix it? This might have been Andrew's vaio problem too. -Andi i386: Use early clobbers for semaphores now The new code does clobber the result early, so make sure to tell gcc to not put it into the same register as a input argument Signed-off-by: Andi Kleen <ak@...e.de> Index: linux/include/asm-i386/semaphore.h =================================================================== --- linux.orig/include/asm-i386/semaphore.h +++ linux/include/asm-i386/semaphore.h @@ -126,7 +126,7 @@ static inline int down_interruptible(str "lea %1,%%eax\n\t" "call __down_failed_interruptible\n" "2:" - :"=a" (result), "+m" (sem->count) + :"=&a" (result), "+m" (sem->count) : :"memory"); return result; @@ -148,7 +148,7 @@ static inline int down_trylock(struct se "lea %1,%%eax\n\t" "call __down_failed_trylock\n\t" "2:\n" - :"=a" (result), "+m" (sem->count) + :"=&a" (result), "+m" (sem->count) : :"memory"); return result; - 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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