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Date: Thu, 9 Dec 2010 22:32:01 +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: <20101209223201.GA23894@srcf.ucam.org>
References: <1291931204-5854-1-git-send-email-mjg@redhat.com> <4D015741.7090500@zytor.com>
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On Thu, Dec 09, 2010 at 02:25:05PM -0800, H. Peter Anvin wrote:
> On 12/09/2010 01:46 PM, Matthew Garrett wrote:
>> Windows reboots by hitting the ACPI reboot vector (if available), trying
>> the keyboard controller, hitting the ACPI reboot vector again and then
>> giving the keyboard controller one last go. Rework our reboot process a
>> little to default to matching this behaviour, although we'll fall through
>> to attempting a triple fault if nothing else works.
>>
>> Signed-off-by: Matthew Garrett<mjg@redhat.com>
>
> 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.

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