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

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Date:	Thu, 06 Nov 2008 07:41:01 -0800
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Eduardo Habkost <ehabkost@...hat.com>, Avi Kivity <avi@...hat.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"

Ingo Molnar <mingo@...e.hu> writes:

> * Ingo Molnar <mingo@...e.hu> wrote:
>
>> > Andrey Borzenkov's patch, for example, adds a new DMI entry 
>> > because reboot=acpi breaks his keyboard (even without KVM, I 
>> > guess). Andrey, was that the case?
>> 
>> hm, IIRC the problem was KVM in his case too.
>
> actually, Andrey's problem seems to be unrelated. So i've queued up 
> the revert below in tip/x86/urgent for v2.6.28. Thanks guys!

If there are a number of problems with reboot and reset
I'm wondering if we should investigate using an
outb to port 0x92.  With the right bit set you can trigger
a toggle of the reset line on many motherboards.

Eric


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