1 files changed, 36 insertions, 0 deletions

diff --git a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
index d50c8c160658..a96830243195 100644
--- a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
+++ b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
@@ -404,6 +404,39 @@ static bool use_amd_pmu(void)
 		 is_zen3(family, model));
 }
 
+static int run_filter_test(struct kvm_vcpu *vcpu, const uint64_t *events,
+			   int nevents, uint32_t flags)
+{
+	struct kvm_pmu_event_filter *f;
+	int r;
+
+	f = create_pmu_event_filter(events, nevents, KVM_PMU_EVENT_ALLOW, flags);
+	r = __vm_ioctl(vcpu->vm, KVM_SET_PMU_EVENT_FILTER, f);
+	free(f);
+
+	return r;
+}
+
+static void test_filter_ioctl(struct kvm_vcpu *vcpu)
+{
+	uint64_t e = ~0ul;
+	int r;
+
+	/*
+	 * Unfortunately having invalid bits set in event data is expected to
+	 * pass when flags == 0 (bits other than eventsel+umask).
+	 */
+	r = run_filter_test(vcpu, &e, 1, 0);
+	TEST_ASSERT(r == 0, "Valid PMU Event Filter is failing");
+
+	r = run_filter_test(vcpu, &e, 1, KVM_PMU_EVENT_FLAG_MASKED_EVENTS);
+	TEST_ASSERT(r != 0, "Invalid PMU Event Filter is expected to fail");
+
+	e = KVM_PMU_EVENT_ENCODE_MASKED_ENTRY(0xff, 0xff, 0xff, 0xf);
+	r = run_filter_test(vcpu, &e, 1, KVM_PMU_EVENT_FLAG_MASKED_EVENTS);
+	TEST_ASSERT(r == 0, "Valid PMU Event Filter is failing");
+}
+
 int main(int argc, char *argv[])
 {
 	void (*guest_code)(void);
@@ -411,6 +444,7 @@ int main(int argc, char *argv[])
 	struct kvm_vm *vm;
 
 	TEST_REQUIRE(kvm_has_cap(KVM_CAP_PMU_EVENT_FILTER));
+	TEST_REQUIRE(kvm_has_cap(KVM_CAP_PMU_EVENT_MASKED_EVENTS));
 
 	TEST_REQUIRE(use_intel_pmu() || use_amd_pmu());
 	guest_code = use_intel_pmu() ? intel_guest_code : amd_guest_code;
@@ -431,6 +465,8 @@ int main(int argc, char *argv[])
 	test_not_member_deny_list(vcpu);
 	test_not_member_allow_list(vcpu);
 
+	test_filter_ioctl(vcpu);
+
 	kvm_vm_free(vm);
 
 	test_pmu_config_disable(guest_code);