Re: [PATCH] x86/entry/64: Disallow RDPID in paranoid entry if KVM is enabled

[Peter Zijlstra]

On Fri, Aug 21, 2020 at 12:55:53PM -0700, hpa@xxxxxxxxx wrote:

> It is hardly going to be a performance difference for paranoid entry,
> which is hopefully rare enough that it falls into the noise.

Try perf some day ;-)

But yeah, given the utter trainwreck that NMIs are anyway, this is all
not going to matter much.