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RE: [Xen-devel] [patch]Add a new reboot method

To: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>, "Alan Cox" <alan@xxxxxxxxxxxxxxxxxxx>, "Jan Beulich" <jbeulich@xxxxxxxxxx>
Subject: RE: [Xen-devel] [patch]Add a new reboot method
From: "Chen, Huacai" <huacai.chen@xxxxxxxxx>
Date: Thu, 29 May 2008 20:52:45 +0800
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Thread-index: AcjBhirsaTIKjS15Ed28TQAX8io7RQAAkznsAAAfvfA=
Thread-topic: [Xen-devel] [patch]Add a new reboot method
>Since when has the number of microseconds per reboot been remotely
>relevant. It simply isn't a performance critical path. Besides which
you
>properly need to use the ACPI power off method on a newer chipset
anyway.

I use "more efficient" to mean that sometimes other methods may fail,
but this one doesn't, have nothing to do with "performance critical".

Yes, I found that 0xcf9 is mostly used in BIOS code rather than OS code,
This patch lacks enough consideration.

--Huacai


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