Re: [PATCH 12/12] xen/mtrr: Add mtrr_if support for Xen mtrr

H. Peter Anvin
2010-09-28T17:56:47Z

On 09/28/2010 10:13 AM, Jeremy Fitzhardinge wrote:
>
> Yes, we could just mask out the MTRR CPU feature and rely entirely on PAT.
>
> The alternative would be to use the wrmsr hooks to emulate the Intel
> MTRR registers by mapping them to hypercalls, but that seems needlessly
> complex.
>

Indeed. Relying on pure PAT is the Right Thing[TM].

-hpa