Re: [PATCH]: Fix MTRR handling on HT CPUs (improved)

Timothy Covell (timothy.covell@ashavan.org)
Fri, 25 Jan 2002 15:30:22 -0600

On Thursday 24 January 2002 14:57, Martin Wilck wrote:
> On Intel processors with "Jackson" technology (also HT, HyperThreading),
> two logical processors share certain registers, in particular the MTRR
> registers. The Linux way of manipulating these registers may lead to
> inconsistent MTRR settings or total disabling of cache.

I thought that Intel was purposely downplaying HT support on the
processors due to performance issues and M$ didn't support it
likewise. Is this another case of Linux being out in the front of things?
Are you to a point that you can benchmark it and recommend when
to enable it or not?

-- 
timothy.covell@ashavan.org.
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