KVM: selftests: Test PMC virtualization with forced emulation

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Extend the PMC counters test to use forced emulation to verify that KVM
emulates counter events for instructions retired and branches retired.
Force emulation for only a subset of the measured code to test that KVM
does the right thing when mixing perf events with emulated events.

Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Tested-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Link: https://lore.kernel.org/r/20240109230250.424295-27-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Sean Christopherson 2024-01-09 15:02:46 -08:00

parent 00856e17da

commit cd34fd8c75

1 changed files with 30 additions and 14 deletions

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tools/testing/selftests/kvm/x86_64/pmu_counters_test.c

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