[Xen-devel] Re: [RFC] x86: cacheability page attributes

[Andi Kleen <andi@xxxxxxxxxxxxxx>]

Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> writes:

> On 3/4/07 15:00, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:
> 
> > Attached draft patch is supposed to help dealing with tracking cacheability
> > attributes on x86, specifically to prevent page aliases using different
> > cacheability attributes.
> 
> How important is this to get right?

Very. We had very hard to track down problems in the mainline kernel
from it. Typically only with 3d drivers though.

-Andi

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