From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751350AbWFFX17 (ORCPT ); Tue, 6 Jun 2006 19:27:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751354AbWFFX17 (ORCPT ); Tue, 6 Jun 2006 19:27:59 -0400 Received: from gw.goop.org ([64.81.55.164]:46545 "EHLO mail.goop.org") by vger.kernel.org with ESMTP id S1751350AbWFFX17 (ORCPT ); Tue, 6 Jun 2006 19:27:59 -0400 Message-ID: <44860F7B.2040105@goop.org> Date: Tue, 06 Jun 2006 16:27:55 -0700 From: Jeremy Fitzhardinge User-Agent: Thunderbird 1.5.0.2 (X11/20060501) MIME-Version: 1.0 To: Andrew Morton CC: Don Zickus , ak@suse.de, shaohua.li@intel.com, miles.lane@gmail.com, linux-kernel@vger.kernel.org Subject: Re: [2.6.17-rc5-mm2] crash when doing second suspend: BUG in arch/i386/kernel/nmi.c:174 References: <4480C102.3060400@goop.org> <1149576246.32046.166.camel@sli10-desk.sh.intel.com> <20060606141755.GN2839@redhat.com> <200606061618.15415.ak@suse.de> <20060606214553.GB11696@redhat.com> <20060606151507.613edaad.akpm@osdl.org> <20060606230504.GC11696@redhat.com> <20060606162201.f0f9f308.akpm@osdl.org> In-Reply-To: <20060606162201.f0f9f308.akpm@osdl.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andrew Morton wrote: > All the above applies to suspend-to-disk. I don't know if suspend-to-RAM > shuts down the APs. > I'm using suspend-to-mem and it looks like its unplugging/replugging all the CPUs. The part of the question I don't quite understand is why this is considered per-CPU state? Surely NMI-watchdog is a system-wide thing? Or does this also tie into other uses of the performance registers which may be set per-CPU? J