Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758265AbYHZLHi (ORCPT ); Tue, 26 Aug 2008 07:07:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753924AbYHZLH3 (ORCPT ); Tue, 26 Aug 2008 07:07:29 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:48203 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753231AbYHZLH3 (ORCPT ); Tue, 26 Aug 2008 07:07:29 -0400 Date: Tue, 26 Aug 2008 13:07:15 +0200 From: Ingo Molnar To: Frans Meulenbroeks Cc: Avi Kivity , Pavel Machek , "Eric W. Biederman" , linux-kernel@vger.kernel.org, kvm@vger.kernel.org Subject: Re: [PATCH] x86: default to reboot via ACPI Message-ID: <20080826110715.GA26204@elte.hu> References: <1219659087-17536-1-git-send-email-avi@qumranet.com> <20080826095032.GA309@elf.ucw.cz> <48B3D579.40502@qumranet.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1168 Lines: 27 * Frans Meulenbroeks wrote: > 2008/8/26 Avi Kivity : > > > It seems excessive. Most machines will hardly run without acpi. > > Well, I'm fairly sure that most of the systems running linux (or some > variant like uclinux), do not support acpi. > > Linux is used a lot in embedded systems (like routers and NAS-es and > probably set-top boxes). I guess the # of embedded systems with some > linux flavour on it is substantially bigger than the desktop systems. > Most of these are ARM or MIPS based and do not support ACPI. ... which is not an issue in this particular discussion, which was about x86 with ACPI support enabled and available, whether in that case (and only in that case) we should first try the ACPI reboot ports (that the ACPI descriptors advertise) before also trying the other methods (kdb, bios, triple fault, etc.) to reboot the box. Ingo -- 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/