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KVM: selftests: Add a helper to query if the PMU module param is enabled

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Add a helper to probe KVM's "enable_pmu" param, open coding strings in
multiple places is just asking for false negatives and/or runtime errors
due to typos.

Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Tested-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Link: https://lore.kernel.org/r/20240109230250.424295-23-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson
2024-01-09 15:02:42 -08:00
parent b55e7adf63
commit c85e986716
4 changed files with 8 additions and 3 deletions
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5
tools/testing/selftests/kvm/include/x86_64/processor.h
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@@ -1217,6 +1217,11 @@ static inline uint8_t xsetbv_safe(uint32_t index, uint64_t value)
bool kvm_is_tdp_enabled(void);
static inline bool kvm_is_pmu_enabled(void)
{
return get_kvm_param_bool("enable_pmu");
}
uint64_t *__vm_get_page_table_entry(struct kvm_vm *vm, uint64_t vaddr,
int *level);
uint64_t *vm_get_page_table_entry(struct kvm_vm *vm, uint64_t vaddr);

2
tools/testing/selftests/kvm/x86_64/pmu_counters_test.c
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@@ -545,7 +545,7 @@ static void test_intel_counters(void)
int main(int argc, char *argv[])
{
TEST_REQUIRE(get_kvm_param_bool("enable_pmu"));
TEST_REQUIRE(kvm_is_pmu_enabled());
TEST_REQUIRE(host_cpu_is_intel);
TEST_REQUIRE(kvm_cpu_has_p(X86_PROPERTY_PMU_VERSION));

2
tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c
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@@ -867,7 +867,7 @@ int main(int argc, char *argv[])
struct kvm_vcpu *vcpu, *vcpu2 = NULL;
struct kvm_vm *vm;
TEST_REQUIRE(get_kvm_param_bool("enable_pmu"));
TEST_REQUIRE(kvm_is_pmu_enabled());
TEST_REQUIRE(kvm_has_cap(KVM_CAP_PMU_EVENT_FILTER));
TEST_REQUIRE(kvm_has_cap(KVM_CAP_PMU_EVENT_MASKED_EVENTS));

2
tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c
View File

@@ -237,7 +237,7 @@ int main(int argc, char *argv[])
{
union perf_capabilities host_cap;
TEST_REQUIRE(get_kvm_param_bool("enable_pmu"));
TEST_REQUIRE(kvm_is_pmu_enabled());
TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_PDCM));
TEST_REQUIRE(kvm_cpu_has_p(X86_PROPERTY_PMU_VERSION));