Re: [PATCH] KVM: selftest: Add family and model check for zen4 in PMU filter test

[Sean Christopherson <seanjc@xxxxxxxxxx>]

On Wed, May 01, 2024, Manali Shukla wrote:
> PMU event filter test fails on zen4 architecture because of
> unavailability of family and model check for zen4 in use_amd_pmu().
> So, add family and model check for zen4 architecture in use_amd_pmu().

Is there a less ugly way to detect that 0xc2,0 == "branch instructions retired"?
E.g. can we instead check for v2 PMU support, or are there no guarantees going
forward?  Pivoting on FMS is so painful :-(