KVM: selftests: Add regression test for mediated PMU fixed counter filter bug

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Add a regression test where KVM would inadvertently ignore PMU event
filters on writes that change _some_ bits in FIXED_CTR_CTRL, but not the
enable bits for PMCs that are denied to the guest.

Link: https://patch.msgid.link/20260603231905.1738487-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Sean Christopherson 2026-06-03 16:19:05 -07:00

parent 9c6e2463c9

commit 2c725bd280

1 changed files with 6 additions and 0 deletions

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tools/testing/selftests/kvm/x86/pmu_event_filter_test.c

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