Although the fixed counter 3 and the exclusive pseudo slots events is not supported by KVM yet, the architectural slots event is supported by KVM and can be programed on any GP counter. Thus add validation for this architectural slots event. Top-down slots event "counts the total number of available slots for an unhalted logical processor, and increments by machine-width of the narrowest pipeline as employed by the Top-down Microarchitecture Analysis method." So suppose the measured count of slots event would be always larger than 0. pmu_counters_test passed with this patch on Intel Sapphire Rapids. Signed-off-by: Dapeng Mi <dapeng1.mi@xxxxxxxxxxxxxxx> --- tools/testing/selftests/kvm/x86_64/pmu_counters_test.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c b/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c index ae5f6042f1e8..99bcb619b861 100644 --- a/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c +++ b/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c @@ -117,6 +117,7 @@ static void guest_assert_event_count(uint8_t idx, fallthrough; case INTEL_ARCH_CPU_CYCLES_INDEX: case INTEL_ARCH_REFERENCE_CYCLES_INDEX: + case INTEL_ARCH_TOPDOWN_SLOTS_INDEX: GUEST_ASSERT_NE(count, 0); break; default: base-commit: f0f3b810edda57f317d79f452056786257089667 -- 2.40.1
