On Tue, May 28, 2024, Manali Shukla wrote: > On 5/1/2024 9:02 PM, Sean Christopherson wrote: > > 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 :-( > > We have confirmed with the hardware team that 0xc2,0 == "branch instructions retired" > is always true going forward, we intend to maintain backward compatibility for branch > instruction retired. Since event 0xc2 is supported on all currently released F17h+ > processors as branch instructions retired, we can check for "family >= 0x17" for all > Zen and its successors instead of checking them individually in pmu_event_filter_test.c. Can you send a patch for this? Please :-)
