Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1754770Ab0LIWi5 (ORCPT <rfc822;w@1wt.eu>);
	Thu, 9 Dec 2010 17:38:57 -0500
Received: from cavan.codon.org.uk ([93.93.128.6]:35354 "EHLO
	cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1751082Ab0LIWi4 (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Thu, 9 Dec 2010 17:38:56 -0500
Date: Thu, 9 Dec 2010 22:38:47 +0000
From: Matthew Garrett <mjg59@srcf.ucam.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org, linux-acpi@vger.kernel.org, lenb@kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] X86: Revamp reboot behaviour to match Windows more
	closely
Message-ID: <20101209223847.GA24452@srcf.ucam.org>
References: <1291931204-5854-1-git-send-email-mjg@redhat.com> <4D015741.7090500@zytor.com> <20101209223201.GA23894@srcf.ucam.org> <4D015914.1040009@zytor.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <4D015914.1040009@zytor.com>
User-Agent: Mutt/1.5.18 (2008-05-17)
X-SA-Exim-Connect-IP: <locally generated>
X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk
X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 868
Lines: 22

On Thu, Dec 09, 2010 at 02:32:52PM -0800, H. Peter Anvin wrote:
> On 12/09/2010 02:32 PM, Matthew Garrett wrote:
>> On Thu, Dec 09, 2010 at 02:25:05PM -0800, H. Peter Anvin wrote:
>>> When this was discussed before we agreed to use ACPI reboot by default
>>> with an ACPI cutoff date; this doesn't have any such cutoff.
>>
>> Windows doesn't either. Older machines simply won't have the appropriate
>> flag set in their FADT.
>>
>
> Windows doesn't get validated on old hardware.

XP does this, and older hardware predates the version of the ACPI spec 
that introduced this flag.

-- 
Matthew Garrett | mjg59@srcf.ucam.org
--
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/