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SubjectRe: [PATCH tip:x86/mm 1/3] x86: A fast way to check capabilities of the current cpu
Date
Tejun Heo <tj@kernel.org> writes:

> Add this_cpu_has() which determines if the current cpu has a certain
> ability using a segment prefix and a bit test operation.


Hmm: if the CPU capability is really tested in a performance critical
path, wouldn't it even be better to just use static_branch() now?

-Andi

--
ak@linux.intel.com -- Speaking for myself only


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