Re: [PATCH] x86: c1e_idle: don't mark TSC unstable if CPU hasinvariant TSC

[Thomas Gleixner]

On Fri, 19 Sep 2008, Andreas Herrmann wrote:
> TSC on K8 is not P-state and C-state invariant.
> Thus on K8 you'll have a TSC drift if C1E is entered.
> 
> This means that if C1E is enabled TSC should be marked unstable on
> those CPUs (it shouldn't be used as a clocksource).

Correct. I missed that detail with the newer CPUs when I did the C1E
idle stuff. Thanks for catching it. I'll schedule it for Linus when
I'm back from Portland.

Thanks,

	tglx
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