From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763342AbXGRLKw (ORCPT ); Wed, 18 Jul 2007 07:10:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752730AbXGRLKo (ORCPT ); Wed, 18 Jul 2007 07:10:44 -0400 Received: from cavan.codon.org.uk ([217.147.92.49]:38496 "EHLO vavatch.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752088AbXGRLKn (ORCPT ); Wed, 18 Jul 2007 07:10:43 -0400 Date: Wed, 18 Jul 2007 12:10:17 +0100 From: Matthew Garrett To: david@lang.hm Cc: "Rafael J. Wysocki" , Jim Crilly , LKML , Alan Stern , Andrew Morton , "Eric W. Biederman" , "Huang, Ying" , Jeremy Maitin-Shepard , Kyle Moffett , Nigel Cunningham , Pavel Machek , pm list , Al Boldi Message-ID: <20070718111016.GA18716@srcf.ucam.org> References: <200707151433.34625.rjw@sisk.pl> <200707161406.28539.rjw@sisk.pl> <20070716123849.GC14212@grifter.jdc.home> <200707161729.16440.rjw@sisk.pl> <20070717104231.GA32486@srcf.ucam.org> <20070718021817.GA13502@srcf.ucam.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.12-2006-07-14 X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@codon.org.uk Subject: Re: Hibernation considerations X-SA-Exim-Version: 4.2.1 (built Tue, 20 Jun 2006 01:35:45 +0000) X-SA-Exim-Scanned: Yes (on vavatch.codon.org.uk) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 17, 2007 at 08:54:24PM -0700, david@lang.hm wrote: > On Wed, 18 Jul 2007, Matthew Garrett wrote: > > >On Tue, Jul 17, 2007 at 08:19:32AM -0700, david@lang.hm wrote: > >>On Tue, 17 Jul 2007, Matthew Garrett wrote: > >>>Powering off rather than using S4 means you lose most wakeup device > >>>support. That would be a functional regression compared to the current > >>>code. > >> > >>only if the kexec isn't able to initialize those devices. > > > >If you aren't using ACPI, you probably don't know how to. > > the current kexec patch to allow you to move back to the original kernel > requires ACPI be disabled to work. Which means it isn't putting the hardware into S4, which means that you don't get the platform wakeup events. -- Matthew Garrett | mjg59@srcf.ucam.org