| Date | Fri, 4 Mar 2022 14:41:42 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH V2 03/11] perf/x86: Add support for TSC in nanoseconds as a perf event clock |
| |
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?
|