From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754066Ab1HHO5j (ORCPT ); Mon, 8 Aug 2011 10:57:39 -0400 Received: from cantor2.suse.de ([195.135.220.15]:53355 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752034Ab1HHO5i (ORCPT ); Mon, 8 Aug 2011 10:57:38 -0400 Date: Mon, 8 Aug 2011 15:57:34 +0100 From: Mel Gorman To: Ingo Molnar Cc: tglx@linutronix.de, hpa@zytor.com, bruno@ioda-net.ch, mjg@redhat.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86: Add reboot quirk for Dell Precision M4600 Message-ID: <20110808145734.GX19099@suse.de> References: <20110727125651.GH3010@suse.de> <20110806065635.GE13220@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <20110806065635.GE13220@elte.hu> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Aug 06, 2011 at 08:56:35AM +0200, Ingo Molnar wrote: > > * Mel Gorman wrote: > > > ACPI reboot does not work for Dell Precision M4600. Detect this > > machine via DMI and force the use of the PCI reboot method. > > > > Reported-and-tested-by: Bruno Friedmann > > Signed-off-by: Mel Gorman > > --- > > arch/x86/kernel/reboot.c | 9 +++++++++ > > 1 files changed, 9 insertions(+), 0 deletions(-) > > Weird - ACPI is the default Windows method of reboot - how come it > does not work on that box? Does Windows work around this specific > machine (unlikely), or is our ACPI boot sequence not 100% compatible > with the Windows method (more likely IMO)? > I have no idea and am not well versed on how this sort of problem is normally investigated. As Matthew is the person most likely to be able to fix this, I'll defer to him. Matthew, would you prefer a quirk be added or hold off until there is time to investigate an alternative? -- Mel Gorman SUSE Labs