From: Matthew Garrett <mjg@redhat.com>
To: Len Brown <lenb@kernel.org>
Cc: Andrey Borzenkov <arvidjaar@mail.ru>, Ingo Molnar <mingo@elte.hu>,
Eduardo Habkost <ehabkost@redhat.com>,
Avi Kivity <avi@redhat.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Andrew Morton <akpm@osdl.org>, "Rafael J. Wysocki" <rjw@sisk.pl>,
kexec@lists.infradead.org, kvm@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH 15/15] Revert "x86: default to reboot via ACPI"
Date: Thu, 6 Nov 2008 23:24:19 +0000 [thread overview]
Message-ID: <20081106232419.GA8007@srcf.ucam.org> (raw)
In-Reply-To: <alpine.LFD.2.00.0811061716420.3106@localhost.localdomain>
On Thu, Nov 06, 2008 at 05:17:25PM -0500, Len Brown wrote:
> > Does Windows default to using the ACPI method now?
>
> That is my guess, based on the fact that we've seen
> newer machines that don't reboot w/o using the ACPI reset reg.
We've seen machines that won't reboot for a variety of reasons in the
past. In some cases this has seemed to be due to hardware being in a
state that the BIOS didn't expect. Hitting the SMI trap behind the ACPI
register might work around this, but I suspect that in many cases we
could achieve the same effect by spending more time trying to work out
whether there's any common themes in the failures.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2008-11-06 23:24 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-05 19:56 [PATCH 00/15] x86: disable virt on kdump and emergency_restart (v2) Eduardo Habkost
[not found] ` <1225915018-6548-1-git-send-email-ehabkost-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-05 19:56 ` [PATCH 01/15] x86 kdump: Extract kdump-specific code from crash_nmi_callback() Eduardo Habkost
2008-11-05 19:56 ` [PATCH 02/15] x86 kdump: Move crashing_cpu assignment to nmi_shootdown_cpus() Eduardo Habkost
2008-11-05 19:56 ` [PATCH 03/15] x86 kdump: Create kdump_nmi_shootdown_cpus() Eduardo Habkost
2008-11-05 19:56 ` [PATCH 04/15] x86 kdump: Make kdump_nmi_callback() a function ptr on crash_nmi_callback() Eduardo Habkost
2008-11-05 19:56 ` [PATCH 05/15] x86 kdump: Make nmi_shootdown_cpus() non-static Eduardo Habkost
2008-11-05 19:56 ` [PATCH 06/15] x86: Move nmi_shootdown_cpus() to reboot.c Eduardo Habkost
2008-11-05 19:56 ` [PATCH 07/15] x86: Make nmi_shootdown_cpus() available on !SMP and !X86_LOCAL_APIC Eduardo Habkost
2008-11-05 19:56 ` [PATCH 08/15] x86: Disable IRQs before doing anything on nmi_shootdown_cpus() Eduardo Habkost
2008-11-05 19:56 ` [PATCH 09/15] x86: Emergency virtualization disable function Eduardo Habkost
2008-11-05 22:27 ` Pavel Machek
[not found] ` <20081105222731.GA14202-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2008-11-06 15:34 ` Eduardo Habkost
2008-11-06 18:11 ` Pavel Machek
2008-11-05 19:56 ` [PATCH 10/15] kdump: Hook emergency_virt_disable() on crash shutdown code Eduardo Habkost
2008-11-05 19:56 ` [PATCH 11/15] x86: disable virtualization on all CPUs if needed, on emergency_restart Eduardo Habkost
2008-11-05 19:56 ` [PATCH 12/15] kvm: svm: no-parameters version of svm_hardware_disable() Eduardo Habkost
2008-11-05 19:56 ` [PATCH 13/15] kvm: svm: register virt_disable function on hardware_setup Eduardo Habkost
2008-11-05 19:56 ` [PATCH 14/15] kvm: vmx: crash_hardware_disable function Eduardo Habkost
2008-11-05 19:56 ` [PATCH 15/15] Revert "x86: default to reboot via ACPI" Eduardo Habkost
[not found] ` <1225915018-6548-16-git-send-email-ehabkost-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-06 7:14 ` Ingo Molnar
[not found] ` <20081106071445.GI15731-X9Un+BFzKDI@public.gmane.org>
2008-11-06 12:40 ` Eduardo Habkost
2008-11-06 14:30 ` Ingo Molnar
[not found] ` <20081106143021.GD13023-X9Un+BFzKDI@public.gmane.org>
2008-11-06 15:06 ` Ingo Molnar
2008-11-06 15:41 ` Eric W. Biederman
[not found] ` <m1mygczwtu.fsf-B27657KtZYmhTnVgQlOflh2eb7JE58TQ@public.gmane.org>
2008-11-06 15:52 ` Avi Kivity
2008-11-06 15:53 ` Andrey Borzenkov
2008-11-06 19:50 ` 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 [this message]
2008-11-07 1:01 ` Zhao Yakui
2008-11-07 0:59 ` Matthew Garrett
[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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