Re: [PATCH] x86, TSC: Add a software TSC offset

From: Peter Zijlstra
Date: Tue Jul 22 2014 - 04:00:25 EST


On Mon, Jul 21, 2014 at 03:13:33PM -0700, Andy Lutomirski wrote:
> >> I actually own one of these systems. It's a Sandy Bridge Core-i7
> >> Extreme or something like that.
> >
> > Ha, cool, so I've got my tester! :-)
>
> Ha. Ha ha. Muahaha. Because IIRC this box is synced until the first
> time it suspends.

Oh cute, one of those :-) Yes some BIOSes write 'random' crap into the
TSC when doing the S states jig. We have some tsc suspend/resume hooks
to correct the worst of that, but yeah screwy that.
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