Re: [Xen-devel] [PATCH RFC 0/3] x86: Full support of PAT

["H. Peter Anvin" <hpa@xxxxxxxxx>]

On 08/20/2014 07:05 AM, One Thousand Gnomes wrote:
> Doing this stuff for Xen also IMHO makes no sense at all. We shouldn't
> have a kernel full of crap to deal with Xen-isms.

We already *have* a kernel full of crap to deal with Xen-isms.  We
screwed that pooch some 10 years ago.

> IFF it means the changes can also implement a mix of four PAT entries
> on Pentium-M or earlier CPUs with PAT errata, and the full PAT on
> processors without errata then IMHO it becomes a whole world more
> interesting.

That is one of the wins, indeed, as well as handle pre-PAT processors.

        -hpa



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