Re: [PATCH] x86/topo: Map vendor CPU types to generic Linux such types

[Borislav Petkov]

On Wed, Jul 22, 2026 at 12:22:11PM -0700, Pawan Gupta wrote:
> Unless I am misreading, TOPO_CPU_TYPE_ANY is introduced in this patch.
> X86_*_ANY in x86_match_cpu() are much needed wildcards, I dont really
> understand why x86_topology_cpu_type needs to carry a wildcard. It should
> reflect the true state, PERFORMANCE, EFFICIENCY or UNKNOWN.
> 
> Between ANY and UNKNOWN, I would prefer UNKNOWN when CPU did not report a
> type.

Because X86_CPU_TYPE_ANY is already there and it is 0 and TOPO_CPU_TYPE_ANY is
supposed to be the same and mirror it.

Did you even read my mail where I explain that we don't do multiple things in
one patch?

> Ya. If need be, a mask of each possible cpu_type can be built for
> dispatching work selectively.

Instead of doing the completely sensible thing and keeping a per-CPU type?

-- 
Regards/Gruss,
    Boris.

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