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KVM: selftests: Test gp event filters don't affect fixed event filters 

Add a test to ensure that setting both generic and fixed performance
event filters does not affect the consistency of the fixed event filter
behavior in KVM.

Signed-off-by: Jinrong Liang <cloudliang@tencent.com>
Link: https://lore.kernel.org/r/20230810090945.16053-7-cloudliang@tencent.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Jinrong Liang 2023-08-10 17:09:45 +08:00 committed by Sean Christopherson
parent d4e3616682
commit 740d087e7f
1 changed files with 27 additions and 0 deletions
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27
tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
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@ -838,6 +838,19 @@ static uint64_t test_with_fixed_counter_filter(struct kvm_vcpu *vcpu,
return run_vcpu_to_sync(vcpu); return run_vcpu_to_sync(vcpu);
} }
static uint64_t test_set_gp_and_fixed_event_filter(struct kvm_vcpu *vcpu,
uint32_t action,
uint32_t bitmap)
{
struct __kvm_pmu_event_filter f = base_event_filter;
f.action = action;
f.fixed_counter_bitmap = bitmap;
set_pmu_event_filter(vcpu, &f);
return run_vcpu_to_sync(vcpu);
}
static void __test_fixed_counter_bitmap(struct kvm_vcpu *vcpu, uint8_t idx, static void __test_fixed_counter_bitmap(struct kvm_vcpu *vcpu, uint8_t idx,
uint8_t nr_fixed_counters) uint8_t nr_fixed_counters)
{ {
@ -864,6 +877,20 @@ static void __test_fixed_counter_bitmap(struct kvm_vcpu *vcpu, uint8_t idx,
count = test_with_fixed_counter_filter(vcpu, KVM_PMU_EVENT_DENY, count = test_with_fixed_counter_filter(vcpu, KVM_PMU_EVENT_DENY,
bitmap); bitmap);
TEST_ASSERT_EQ(!!count, !(bitmap & BIT(idx))); TEST_ASSERT_EQ(!!count, !(bitmap & BIT(idx)));
/*
* Check that fixed_counter_bitmap has higher priority than
* events[] when both are set.
*/
count = test_set_gp_and_fixed_event_filter(vcpu,
KVM_PMU_EVENT_ALLOW,
bitmap);
TEST_ASSERT_EQ(!!count, !!(bitmap & BIT(idx)));
count = test_set_gp_and_fixed_event_filter(vcpu,
KVM_PMU_EVENT_DENY,
bitmap);
TEST_ASSERT_EQ(!!count, !(bitmap & BIT(idx)));
} }
} }