Re: MTRR use in drivers

From: H. Peter Anvin
Date: Sun Jun 23 2013 - 18:11:34 EST

On 06/23/2013 02:56 PM, Henrique de Moraes Holschuh wrote:
> And as far as I could find from Intel's not-that-complete public
> "specification updates", we are applying the errata workaround to a few more
> processors than strictly required, but since I have no idea how to write a
> test case, I can't whitelist the 3rd-gen Pentium M on my T43, nor can I get
> ThinkPad owners to test it for us on 1st and 2nd-gen Pentium M and report
> back.

Which specific erratum are you referring to, here? The "WC becomes UC"
erratum? I don't think there is a sane testcase for it since it needs a
very complicated setup to trigger.


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