Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755620AbXI1MlX (ORCPT ); Fri, 28 Sep 2007 08:41:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753123AbXI1MlN (ORCPT ); Fri, 28 Sep 2007 08:41:13 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:46556 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752238AbXI1MlL (ORCPT ); Fri, 28 Sep 2007 08:41:11 -0400 From: "Rafael J. Wysocki" To: Len Brown Subject: Re: Problems with SMP & ACPI powering off Date: Fri, 28 Sep 2007 14:55:28 +0200 User-Agent: KMail/1.9.5 Cc: Mark Lord , Linux Kernel , simon.derr@bull.net References: <46FC20B7.4000606@rtr.ca> <200709280000.53001.rjw@sisk.pl> <200709280057.44789.lenb@kernel.org> In-Reply-To: <200709280057.44789.lenb@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200709281455.29069.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 764 Lines: 19 On Friday, 28 September 2007 06:57, Len Brown wrote: > On Thursday 27 September 2007 18:00, Rafael J. Wysocki wrote: > > On Thursday, 27 September 2007 23:29, Mark Lord wrote: > > > Question: do we disable all CPUs except 0 when doing ACPI power off? > > > > No, but we should. > > We used to. > It is absolutely mandatory -- else it confuses the BIOS on some boards > b/c it isn't expecting SMM to get entered from other than cpu0. Can we use the CPU hotplug for that, like in the suspend/hibernation case? Rafael - 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/