From: Dapeng Mi Date: Fri, 19 Sep 2025 21:46:44 +0000 (-0700) Subject: KVM: selftests: Add timing_info bit support in vmx_pmu_caps_test X-Git-Tag: v6.18-rc1~95^2~2^2~6 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=210b09fa428c078c44951170fe69234c880a05f6;p=thirdparty%2Flinux.git KVM: selftests: Add timing_info bit support in vmx_pmu_caps_test A new bit PERF_CAPABILITIES[17] called "PEBS_TIMING_INFO" bit is added to indicated if PEBS supports to record timing information in a new "Retried Latency" field. Since KVM requires user can only set host consistent PEBS capabilities, otherwise the PERF_CAPABILITIES setting would fail, add pebs_timing_info into the "immutable_caps" to block host inconsistent PEBS configuration and cause errors. Opportunistically drop the anythread_deprecated bit. It isn't and likely never was a PERF_CAPABILITIES flag, the test's definition snuck in when the union was copy+pasted from the kernel's definition. Signed-off-by: Dapeng Mi Tested-by: Yi Lai [sean: call out anythread_deprecated change] Tested-by: Dapeng Mi Link: https://lore.kernel.org/r/20250919214648.1585683-2-seanjc@google.com Signed-off-by: Sean Christopherson --- diff --git a/tools/testing/selftests/kvm/x86/vmx_pmu_caps_test.c b/tools/testing/selftests/kvm/x86/vmx_pmu_caps_test.c index a1f5ff45d518..f8deea220156 100644 --- a/tools/testing/selftests/kvm/x86/vmx_pmu_caps_test.c +++ b/tools/testing/selftests/kvm/x86/vmx_pmu_caps_test.c @@ -29,7 +29,7 @@ static union perf_capabilities { u64 pebs_baseline:1; u64 perf_metrics:1; u64 pebs_output_pt_available:1; - u64 anythread_deprecated:1; + u64 pebs_timing_info:1; }; u64 capabilities; } host_cap; @@ -44,6 +44,7 @@ static const union perf_capabilities immutable_caps = { .pebs_arch_reg = 1, .pebs_format = -1, .pebs_baseline = 1, + .pebs_timing_info = 1, }; static const union perf_capabilities format_caps = {