Re: [PATCH kvm/queue v2 2/3] perf: x86/core: Add interface to query perfmon_event_map[] directly

[Peter Zijlstra]

On Wed, Feb 02, 2022 at 02:35:45PM -0800, Jim Mattson wrote:
> 3) TDX is going to pull the rug out from under us anyway. When the TDX
> module usurps control of the PMU, any active host counters are going
> to stop counting. We are going to need a way of telling the host perf
> subsystem what's happening, or other host perf clients are going to
> get bogus data.

That's not acceptible behaviour. I'm all for unilaterally killing any
guest that does this.