[Xen-devel] Re: [PATCH 06/16] xen: disable PAT

[Ingo Molnar <mingo@xxxxxxx>]

* 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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