Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758248AbZCSHEn (ORCPT ); Thu, 19 Mar 2009 03:04:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756918AbZCSHEe (ORCPT ); Thu, 19 Mar 2009 03:04:34 -0400 Received: from mga06.intel.com ([134.134.136.21]:42565 "EHLO orsmga101.jf.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753081AbZCSHEd (ORCPT ); Thu, 19 Mar 2009 03:04:33 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.38,388,1233561600"; d="scan'208";a="499017934" Message-ID: <49C1EE7D.5070507@linux.intel.com> Date: Thu, 19 Mar 2009 15:04:29 +0800 From: chen gong User-Agent: Thunderbird 2.0.0.21 (Windows/20090302) MIME-Version: 1.0 To: "Rafael J. Wysocki" CC: Li Yang , linux-kernel@vger.kernel.org Subject: Re: nonboot cpu on SMP suspend References: <2a27d3730903172325w16ec329cp872ec35d100f6506@mail.gmail.com> <200903190000.33572.rjw@sisk.pl> In-Reply-To: <200903190000.33572.rjw@sisk.pl> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 804 Lines: 18 Rafael J. Wysocki 写道: > On Wednesday 18 March 2009, Li Yang wrote: >> Hi all, >> >> I'm curious why we need to un-plug all the nonboot cpus before suspend >> and start them all over again after the suspend(ACPI sleep)? I mean >> if we can bring the booting cpu back to the exact state as before >> suspend, why can't we just do the same for non-booting cpus? And that >> will be much faster. Any thought? Thanks. > > Because we need to enter the BIOS with one CPU on-line only. > You mean only one CPU can be supported by BIOS when suspend/resume ? -- 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/