From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754695AbZCEIQp (ORCPT ); Thu, 5 Mar 2009 03:16:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751354AbZCEIQg (ORCPT ); Thu, 5 Mar 2009 03:16:36 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:35647 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750868AbZCEIQg (ORCPT ); Thu, 5 Mar 2009 03:16:36 -0500 Date: Thu, 5 Mar 2009 09:19:08 +0100 From: Pavel Machek To: Benjamin Herrenschmidt Cc: Linus Torvalds , "Rafael J. Wysocki" , Jesse Barnes , Linux Kernel Mailing List , Andreas Schwab , Len Brown , Ingo Molnar Subject: Re: Reworking suspend-resume sequence (was: Re: PCI PM: Restore standard config registers of all devices early) Message-ID: <20090305081908.GA30418@elf.ucw.cz> References: <200901261904.n0QJ4Q9c016709@hera.kernel.org> <200902032253.42709.rjw@sisk.pl> <1233700390.16867.97.camel@pasglop> <200902032344.22348.rjw@sisk.pl> <1233702327.16867.109.camel@pasglop> <20090304080212.GA1489@ucw.cz> <1236209104.6696.73.camel@pasglop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1236209104.6696.73.camel@pasglop> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu 2009-03-05 10:25:04, Benjamin Herrenschmidt wrote: > > > As long as we claim to support cpu hotplug, suspending the cpus early > > should work. User might have unplugged the cpu manually... > > > > If something is broken in acpi, we may need to disable cpu*/onlone on > > affected systems. > > You seem to miss some context here... it seems that ACPI mandates that > CPUs are suspended after devices and you know that we can't just start > blacklisting half of the machines out there just because we happen not > to do the same as what Windows does... I did not see that ACPI mandate... where is it? That would interfere with user's ability to online/offline cpus, badly. Are you saying that we should online all the CPUs before starting suspend to stay on the "safe side"? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html