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KVM: selftests: Add timing_info bit support in vmx_pmu_caps_test

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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 <dapeng1.mi@linux.intel.com>
Tested-by: Yi Lai <yi1.lai@intel.com>
[sean: call out anythread_deprecated change]
Tested-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Link: https://lore.kernel.org/r/20250919214648.1585683-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Dapeng Mi 2025-09-19 14:46:44 -07:00 committed by Sean Christopherson
parent aebc62b3de
commit 210b09fa42
1 changed files with 2 additions and 1 deletions
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3
tools/testing/selftests/kvm/x86/vmx_pmu_caps_test.c
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@ -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 = {