linux-kernel - Re: [PATCH 15/15] Revert "x86: default to reboot via ACPI"

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Message-ID: <20081106071445.GI15731@elte.hu>
Date:	Thu, 6 Nov 2008 08:14:45 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Eduardo Habkost <ehabkost@...hat.com>
Cc:	Avi Kivity <avi@...hat.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Simon Horman <horms@...ge.net.au>,
	Andrew Morton <akpm@...l.org>, Vivek Goyal <vgoyal@...hat.com>,
	Haren Myneni <hbabu@...ibm.com>,
	Andrey Borzenkov <arvidjaar@...l.ru>, mingo@...hat.com,
	"Rafael J. Wysocki" <rjw@...k.pl>, kexec@...ts.infradead.org,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 15/15] Revert "x86: default to reboot via ACPI"


* Eduardo Habkost <ehabkost@...hat.com> wrote:

> This reverts commit c7ffa6c26277b403920e2255d10df849bd613380.
> 
> Now that we have the hooks to disable virtualization on
> emergency_restart(), we can get back to the BOOT_KBD reboot_type default.
> 
> Signed-off-by: Eduardo Habkost <ehabkost@...hat.com>

hm, why revert this? There's nothing wrong with the ACPI reboot 
method, it's just that we surprise the BIOS by exiting with an unclean 
VMX state in certain circumstances.

if the ACPI reboot method does not work we do the KBD method as the 
next thing in the reboot chain.

	Ingo
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