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

Jeremy Fitzhardinge
2010-09-28T18:13:07Z

On 09/28/2010 10:56 AM, H. Peter Anvin wrote:
> 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].

Is there a plan to formally deprecate /proc/mtrr and the kernel
infrastructure behind it?

J