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KVM: selftests: Add regression test for mediated PMU fixed counter filter bug
authorSean Christopherson <seanjc@google.com>
Wed, 3 Jun 2026 23:19:05 +0000 (16:19 -0700)
committerSean Christopherson <seanjc@google.com>
Mon, 8 Jun 2026 16:18:52 +0000 (09:18 -0700)
commit2c725bd2802fe7afef77318654cf589ff6588743
tree619139e5d5d09cb3ef058e4256b4759ea1de895ftree | snapshot
parent9c6e2463c9f3b506f89a5a557b9416286db6e532commit | diff
KVM: selftests: Add regression test for mediated PMU fixed counter filter bug

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>
tools/testing/selftests/kvm/x86/pmu_event_filter_test.c diff | blob | blame | history
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