Re: [PATCH v2 1/3] x86/tsc: use CPUID.0x16 to calculate missing crystal frequency

From: Ingo Molnar
Date: Thu May 09 2019 - 05:08:33 EST



* Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:

> On Thu, 9 May 2019, Daniel Drake wrote:
>
> > native_calibrate_tsc() had a data mapping Intel CPU families
> > and crystal clock speed, but hardcoded tables are not ideal, and this
> > approach was already problematic at least in the Skylake X case, as
> > seen in commit b51120309348 ("x86/tsc: Fix erroneous TSC rate on Skylake
> > Xeon").
>
> ...
>
> For the whole pile:
>
> Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

Thanks - applied it to tip:x86/apic, will push it out after a bit of
testing.

Thanks,

Ingo