Re: [PATCH V6 2/5] perf/x86/kvm: Avoid unnecessary work in guest filtering

Borislav Petkov
2019-02-04T16:41:30Z

On Mon, Feb 04, 2019 at 11:23:13AM -0500, Liang, Kan wrote:
> I mean that the microcode version number is irrelevant between stepping.
> Let's use SKL server as an example.
> + INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_X, 3, 0x00000021),
> + INTEL_CPU_DESC(INTEL_FAM6_SKYLAKE_X, 4, 0x00000000),
>
> We need the function to check the min microcode version number for each
> stepping.

So you need to say "ignore stepping". I.e., X86_STEPPING_ANY.

--
Regards/Gruss,
Boris.

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