Re: [PATCH V2 03/11] perf/x86: Add support for TSC in nanoseconds as a perf event clock

[Peter Zijlstra]

On Mon, Feb 14, 2022 at 01:09:06PM +0200, Adrian Hunter wrote:
> Currently, when Intel PT is used within a VM guest, it is not possible to
> make use of TSC because perf clock is subject to paravirtualization.

Yeah, so how much of that still makes sense, or ever did? AFAIK the
whole pv_clock thing is utter crazy. Should we not fix that instead?