Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752284Ab0GJUpr (ORCPT ); Sat, 10 Jul 2010 16:45:47 -0400 Received: from mail.openrapids.net ([64.15.138.104]:37948 "EHLO blackscsi.openrapids.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751158Ab0GJUpp (ORCPT ); Sat, 10 Jul 2010 16:45:45 -0400 Date: Sat, 10 Jul 2010 16:45:42 -0400 From: Mathieu Desnoyers To: Maciej Rutecki Cc: mingo@elte.hu, linux-kernel@vger.kernel.org, Ma Ling , "H. Peter Anvin" Subject: Re: [BUG -tip bisected] x86, mem: Optimize memcpy by avoiding memory false dependece Message-ID: <20100710204542.GA13334@Krystal> References: <20100707220325.GA27738@Krystal> <201007102156.30347.maciej.rutecki@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201007102156.30347.maciej.rutecki@gmail.com> X-Editor: vi X-Info: http://www.efficios.com X-Operating-System: Linux/2.6.26-2-686 (i686) X-Uptime: 16:44:32 up 168 days, 23:21, 5 users, load average: 0.10, 0.04, 0.01 User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1049 Lines: 33 * Maciej Rutecki (maciej.rutecki@gmail.com) wrote: > On czwartek, 8 lipca 2010 o 00:03:25 Mathieu Desnoyers wrote: > > Hi Ingo, > > > > I just bisected the cause of boot hard lockup on my Intel Xeon E5405 to > > this commit recently added to -tip: > > > > a1e5278e40f16a4611264f8da9e557c16cb6f6ed is the first bad commit > > Merge branch 'x86/mem' > > > > I created a Bugzilla entry at > https://bugzilla.kernel.org/show_bug.cgi?id=16364 > for your bug report, please add your address to the CC list in there, thanks! This bug report is incorrect. The problem does not affect mainline, as I caught it in -tip and it has been reverted before it's been pulled into Linus tree. Thanks, Mathieu -- Mathieu Desnoyers Operating System Efficiency R&D Consultant EfficiOS Inc. http://www.efficios.com -- 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/