From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762792AbXEJOZy (ORCPT ); Thu, 10 May 2007 10:25:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757327AbXEJOZq (ORCPT ); Thu, 10 May 2007 10:25:46 -0400 Received: from gw-e.panasas.com ([65.194.124.178]:38933 "EHLO cassoulet.panasas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1762701AbXEJOZp (ORCPT ); Thu, 10 May 2007 10:25:45 -0400 Message-ID: <46432B43.9060709@panasas.com> Date: Thu, 10 May 2007 17:25:07 +0300 From: Benny Halevy User-Agent: Thunderbird 1.5.0.10 (X11/20070221) MIME-Version: 1.0 To: Andi Kleen , Joerg Roedel CC: Pete Zaitcev , ak@suse.de, linux-kernel@vger.kernel.org, akpm@linux-foundation.org Subject: Re: Andi, you broke my laptop :-) References: <20070509125616.cde56b8e.zaitcev@redhat.com> <20070510130144.GI14898@one.firstfloor.org> <20070510133555.GA5705@amd.com> <20070510141942.GM14898@one.firstfloor.org> In-Reply-To: <20070510141942.GM14898@one.firstfloor.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 10 May 2007 14:25:09.0929 (UTC) FILETIME=[03B45190:01C7930F] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Joerg's patch works for me too. Thanks, Benny Andi Kleen wrote: > On Thu, May 10, 2007 at 03:35:56PM +0200, Joerg Roedel wrote: >> On Thu, May 10, 2007 at 03:01:44PM +0200, Andi Kleen wrote: >>> On Wed, May 09, 2007 at 12:56:16PM -0700, Pete Zaitcev wrote: >>>> Hi, Andi: >>>> >>>> The attached patch (actually, git show output) makes my Dell 1501 to hang >>>> on boot. Sorry, I have no clue why... The culprit is found with git bisect. >>>> But yes, it's an AMD MK-36. I use an x86_64 kernel. It is 100% reproducible. >>> MK-36? Does it have SVM? >>> >>> Anyways we previously had issues with this being miscompiled, but >>> I thought the latest patch should have been ok. What compiler do you use? >>> >>> Can you send me a disassembly listing of arch/x86_64/kernel/time.o? >> I debugged this problem a bit and my compiler[1]interprets the =A >> constraint as %rax instead of %edx:%eax on x86_64 which causes the >> problem. The appended patch provides a workaround for this and fixed the >> hang on my machine. > > Hmm yes now I can reproduce it too. I didn't see any hangs so i suppose > my (and that of most -mm tester's) compiled binary always happened to have a > suitable value in edx > > Thanks for the patch. > > -Andi > - > 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/ -- Benny Halevy Panasas Inc. Accelerating Time to Results(TM) with Clustered Storage www.panasas.com bhalevy@panasas.com Tel/Fax: +972-3-647-8340 Mobile: +972-54-802-8340