KVM: LoongArch: selftests: Add PMU overflow interrupt test

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Extend the PMU test suite to cover overflow interrupts. The test enables
the PMI (Performance Monitor Interrupt), sets counter 0 to one less than
the overflow value, and verifies that an interrupt is raised when the
counter overflows. A guest interrupt handler checks the interrupt cause
and disables further PMU interrupts upon success.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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Song Gao 2026-04-09 18:56:38 +08:00 • committed by Huacai Chen

parent 11c8401927

commit e47b8e1db9

3 changed files with 60 additions and 0 deletions

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21

tools/testing/selftests/kvm/include/loongarch/pmu.h

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3

tools/testing/selftests/kvm/include/loongarch/processor.h

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36

tools/testing/selftests/kvm/loongarch/pmu_test.c

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