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| author | Jim Mattson <jmattson@google.com> | 2026-06-09 17:30:30 -0700 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-06-17 17:56:17 -0700 |
| commit | 70f4701c12e4bb6214f0ec762f928e96ff3dacc3 (patch) | |
| tree | 71f099c12e5a18c30f4d57a60935a709a644b531 /tools/testing/selftests/kvm/include/x86 | |
| parent | 0c277410f5314bab45f92051b246d39d02923b64 (diff) | |
| download | linux-next-70f4701c12e4bb6214f0ec762f928e96ff3dacc3.tar.gz linux-next-70f4701c12e4bb6214f0ec762f928e96ff3dacc3.zip | |
KVM: selftests: Add svm_pmu_host_guest_test for Host-Only/Guest-Only bits
Add a selftest to verify KVM correctly virtualizes the AMD PMU Host-Only
(bit 41) and Guest-Only (bit 40) event selector bits across all relevant
SVM state transitions.
The test programs 4 PMCs simultaneously with all combinations of the
Host-Only and Guest-Only bits, then verifies correct counting behavior
with EFER.SVME clear and set, as well as in host mode and guest mode.
The test also verifies that updating Host-Only / Guest-Only bits for a
PMC works as intended, and that event filtering is still respected.
Signed-off-by: Jim Mattson <jmattson@google.com>
Co-developed-by: Yosry Ahmed <yosry@kernel.org>
Signed-off-by: Yosry Ahmed <yosry@kernel.org>
Link: https://patch.msgid.link/20260610003030.2957261-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'tools/testing/selftests/kvm/include/x86')
| -rw-r--r-- | tools/testing/selftests/kvm/include/x86/pmu.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/x86/pmu.h b/tools/testing/selftests/kvm/include/x86/pmu.h index 98537cc8840d..608ed83d7c6a 100644 --- a/tools/testing/selftests/kvm/include/x86/pmu.h +++ b/tools/testing/selftests/kvm/include/x86/pmu.h @@ -38,6 +38,12 @@ #define ARCH_PERFMON_EVENTSEL_INV BIT_ULL(23) #define ARCH_PERFMON_EVENTSEL_CMASK GENMASK_ULL(31, 24) +/* + * These are AMD-specific bits. + */ +#define AMD64_EVENTSEL_GUESTONLY BIT_ULL(40) +#define AMD64_EVENTSEL_HOSTONLY BIT_ULL(41) + /* RDPMC control flags, Intel only. */ #define INTEL_RDPMC_METRICS BIT_ULL(29) #define INTEL_RDPMC_FIXED BIT_ULL(30) |