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SubjectRe: [PATCH] x86/tsc: Use hard-coded crystal clock for Skylake mobile
On Mon, May 11, 2020 at 2:34 PM Thomas Gleixner <tglx@linutronix.de> wrote:
>
> Radoslaw Biernacki <biernacki@google.com> writes:
> > We found that regression only on specific SKU which was used in one
> > model of ChromeBook.
> > What's interesting is that some other SKU is fine.
> >
> > The consequences of this are rather not trivial,
> > so this was considered a quickfix and temporary till we develop
> > something better.
> > In contrast to ChromeOs, I know that there is no way of finding if
> > there are in fact regressions on generic kernel in the field (this is
> > SKU dependent),
> > but we also think that this problem should be addressed in a better
> > way (if possible).
>
> Fix the BIOS to setup the CPUID/MSRs correctly?
>
> Thanks,
>
> tglx

Yes of course, but "if possible" might mean we would not be able to
fix the BIOS.
Anyway, let me see what actually can be done.

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