From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750825AbWAYH7V (ORCPT ); Wed, 25 Jan 2006 02:59:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750768AbWAYH7V (ORCPT ); Wed, 25 Jan 2006 02:59:21 -0500 Received: from smtp.osdl.org ([65.172.181.4]:18389 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1750825AbWAYH7V (ORCPT ); Wed, 25 Jan 2006 02:59:21 -0500 Date: Tue, 24 Jan 2006 23:59:01 -0800 From: Andrew Morton To: Andi Kleen Cc: fernando@intellilink.co.jp, ebiederm@xmission.com, vgoyal@in.ibm.com, linux-kernel@vger.kernel.org, fastboot@lists.osdl.org Subject: Re: [PATCH 1/5] stack overflow safe kdump (2.6.16-rc1-i386) - safe_smp_processor_id Message-Id: <20060124235901.719aa375.akpm@osdl.org> In-Reply-To: <200601250853.48193.ak@suse.de> References: <1138171868.2370.62.camel@localhost.localdomain> <20060124231052.7c9fcbec.akpm@osdl.org> <200601250853.48193.ak@suse.de> X-Mailer: Sylpheed version 1.0.4 (GTK+ 1.2.10; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andi Kleen wrote: > > On Wednesday 25 January 2006 08:10, Andrew Morton wrote: > > > It assumes that all x86 SMP machines have APICs. That's untrue of Voyager. > > I think we can probably live with this assumption - others would know > > better than I. > > Early x86s didn't have APICs and they are still often disabled on not so > old mobile CPUs. I don't think it's a good assumption to make for i386. > But how many of those do SMP?