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

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

Alan Cox wrote:
> 
> There are quite a few different CPUs with PAT errata. I've no idea why
> there are so many errata about that specific bit.
> 

I suspect it is simply because:

a) it moves around between the various page table formats;
b) the default configuration and existing OSes don't use it;
c) it isn't even *present* in some formats.

        -hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.


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