From: Matthew Garrett <mjg@redhat.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Edouard Gomez <ed.gomez@free.fr>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
x86@kernel.org, Thomas Backlund <tmb@mandriva.org>,
Leann Ogasawara <leann.ogasawara@canonical.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86: Dell Precision WorkStation 690 reboot quirk
Date: Thu, 9 Dec 2010 15:27:06 +0000 [thread overview]
Message-ID: <20101209152706.GB7273@srcf.ucam.org> (raw)
In-Reply-To: <4D00F390.6020609@zytor.com>
On Thu, Dec 09, 2010 at 07:19:44AM -0800, H. Peter Anvin wrote:
> On 12/09/2010 07:16 AM, Matthew Garrett wrote:
> > My testing suggests that Windows never uses the BIOS-style reboot
> > approach, so this seems wrong. Does reboot=acpi work for you?
>
> We have talked about switching to reboot=acpi by default for machines
> newer than <some date>... this would be good to do.
The majority of systems with valid ACPI reboot vectors appear to just be
pointing at the PCI reset port, which makes sense. My testing suggests
that Windows calls the ACPI reboot vector, then tries to use the i8042,
then tries the ACPI reboot vector again and finally tries the i8042
again before giving up and spinning. I'll recheck this behaviour today
and then send a patch.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2010-12-09 15:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-08 15:37 [PATCH] x86: Dell Precision WorkStation 690 reboot quirk Edouard Gomez
2010-12-08 16:27 ` Thomas Gleixner
2010-12-09 15:16 ` Matthew Garrett
2010-12-09 15:19 ` H. Peter Anvin
2010-12-09 15:27 ` Matthew Garrett [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-03-05 15:55 Edouard Gomez
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