From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763430AbXGFSXw (ORCPT ); Fri, 6 Jul 2007 14:23:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758311AbXGFSXn (ORCPT ); Fri, 6 Jul 2007 14:23:43 -0400 Received: from mail.windriver.com ([147.11.1.11]:64307 "EHLO mail.wrs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756636AbXGFSXm (ORCPT ); Fri, 6 Jul 2007 14:23:42 -0400 Message-ID: <468E88CE.2060809@windriver.com> Date: Fri, 06 Jul 2007 13:24:14 -0500 From: Jason Wessel User-Agent: Thunderbird 1.5.0.12 (X11/20070530) MIME-Version: 1.0 To: Jan Kiszka CC: kgdb-bugreport@lists.sourceforge.net, Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: preemption counter havoc on kgdb-taken faults References: <20070628034321.38c9f12b.akpm@linux-foundation.org> <468E4BA5.8010601@imap.cc> <468E8106.8080801@windriver.com> <468E86DF.4050509@web.de> In-Reply-To: <468E86DF.4050509@web.de> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 06 Jul 2007 18:23:22.0971 (UTC) FILETIME=[BC9132B0:01C7BFFA] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jan Kiszka wrote: > > At this chance... Reminds me that this old issue still seems to be > unsolved in current kgdb: > > http://www.mail-archive.com/kgdb-bugreport@lists.sourceforge.net/msg00442.html > > I'm only looking at that spot in kgdb right now and /may/ oversee new > border conditions elsewhere. But my feeling is there are none. > > Jan (looking forward to see kgdb merged) > > Hi Jan, This issue was fixed in a generic way in the patch set that is in the -mm tree. Had you tried your test case in the current -mm tree? The problem you mentioned was fixed by saving and restoring the preempt count as a part of the fault handling from the kgdb core and not in the arch specific portion. Jason.