From: Matthew Garrett <mjg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Zhao Yakui <yakui.zhao-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: Andrew Morton <akpm-3NddpPZAyC0@public.gmane.org>,
Eduardo Habkost
<ehabkost-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"kexec-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<kexec-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
Linux Kernel Mailing List
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>,
"linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"Eric W. Biederman"
<ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>,
Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>,
Andrey Borzenkov <arvidjaar-JGs/UdohzUI@public.gmane.org>,
Len Brown <lenb-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Avi Kivity <avi-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH 15/15] Revert "x86: default to reboot via ACPI"
Date: Fri, 7 Nov 2008 00:59:46 +0000 [thread overview]
Message-ID: <20081107005946.GA9254@srcf.ucam.org> (raw)
In-Reply-To: <1226019679.3989.107.camel@yakui_zhao.sh.intel.com>
On Fri, Nov 07, 2008 at 09:01:19AM +0800, Zhao Yakui wrote:
> With the help of KVM I find that the windows will be rebooted by writing
> RESET_VALUE to RESET_REG I/O port if the RESET_REG_SUP bit is not
> zero(It indicates whether ACPI reboot is supported).
> IMO maybe the ACPI reboot is the first choice. If it can't, then it will
> fall back to other mode.
Hmm. But we're seeing some machines that end up very confused if
rebooted via ACPI. I guess we need to run Vista on them to find out how
they behave. What OSI strings did your KVM setup expose? We know that
Windows changes behaviour under various circumstances depending on which
OS the firmware requests, so it's almost possible that this is another
of those cases.
--
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org
next prev parent reply other threads:[~2008-11-07 0:59 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1225915018-6548-1-git-send-email-ehabkost@redhat.com>
[not found] ` <20081106143021.GD13023@elte.hu>
[not found] ` <20081106150610.GA1644@elte.hu>
[not found] ` <200811061853.08003.arvidjaar@mail.ru>
2008-11-06 19:50 ` [PATCH 15/15] Revert "x86: default to reboot via ACPI" Len Brown
2008-11-06 21:50 ` Matthew Garrett
[not found] ` <20081106215011.GA6391-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2008-11-06 22:17 ` Len Brown
2008-11-06 23:24 ` Matthew Garrett
2008-11-07 1:01 ` Zhao Yakui
2008-11-07 0:59 ` Matthew Garrett [this message]
[not found] ` <20081107005946.GA9254-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org>
2008-11-09 10:11 ` Avi Kivity
2008-11-09 10:24 ` Matthew Garrett
[not found] <fa.UVpnVba3yRAWG3rGZ0sk20JE9hs@ifi.uio.no>
[not found] ` <fa.FPBNKx3BSvZHPZ+eXD4Tb+fuRYk@ifi.uio.no>
[not found] ` <fa.PvVEuEo+f/t4sLmcGyN2Tsl8zYg@ifi.uio.no>
[not found] ` <fa.zzFdOXisTZzBaE1+ueGIYmt+Z5c@ifi.uio.no>
[not found] ` <fa.vQ6HVRcPFFr1zpcXFFOjEPtDdNk@ifi.uio.no>
[not found] ` <fa.ckUqcrtVKbxAkjNggIdajBTHr9Q@ifi.uio.no>
[not found] ` <fa.ckUqcrtVKbxAkjNggIdajBTHr9Q-6miFZF/5cTBuMpJDpNschA@public.gmane.org>
2008-11-07 1:30 ` Robert Hancock
[not found] ` <49139A43.4000203-fVOoFLC7IWo@public.gmane.org>
2008-11-07 1:43 ` Matthew Garrett
2008-11-07 1:53 ` Len Brown
2008-11-08 22:32 ` Rafael J. Wysocki
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