Re: [PATCH 06/16] xen: disable PAT

From: Ingo Molnar
Date: Fri May 08 2009 - 07:16:39 EST



* Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:

> From: Ian Campbell <ian.campbell@xxxxxxxxxx>
>
> Impact: disable PAT under Xen
>
> Xen imposes a particular PAT layout on all paravirtual guests which
> does not match the layout Linux would like to use.
>
> Force PAT to be disabled until this is resolved.
>
> Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>

hm, what will the resolution be? Every step in the direction of
making Xen guests more special is a step in the wrong direction.
Coupling between Xen and Linux should be reduced, not increased.

Ingo
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