Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030706AbWI0TiM (ORCPT ); Wed, 27 Sep 2006 15:38:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030708AbWI0TiL (ORCPT ); Wed, 27 Sep 2006 15:38:11 -0400 Received: from ns2.suse.de ([195.135.220.15]:26546 "EHLO mx2.suse.de") by vger.kernel.org with ESMTP id S1030704AbWI0TiJ (ORCPT ); Wed, 27 Sep 2006 15:38:09 -0400 To: Rolf Eike Beer Cc: len.brown@intel.com, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, akpm@osdl.org Subject: Re: [BUG] Oops on boot (probably ACPI related) References: <200609271424.47824.eike-kernel@sf-tec.de> From: Andi Kleen Date: 27 Sep 2006 21:38:03 +0200 In-Reply-To: <200609271424.47824.eike-kernel@sf-tec.de> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1404 Lines: 40 Rolf Eike Beer 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 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@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/