Re: [PATCH 1/2] perf/x86/rapl: Add support for Intel Meteor Lake

From: Borislav Petkov
Date: Thu Jan 05 2023 - 04:56:15 EST


On Thu, Jan 05, 2023 at 06:54:31AM +0000, Zhang, Rui wrote:
> I thought of this before and got some ideas related.
> Say, instead of maintaining the model list in a series of drivers, can
> we have something similar to "cpu_feature" instead?

Yes, you can define a synthetic X86_FEATURE flag and set it for each CPU model
which supports the feature in arch/x86/kernel/cpu/intel.c so that at least all
the model matching gunk is kept where it belongs, in the CPU init code and the
other code simply tests that flag.

--
Regards/Gruss,
Boris.

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