If this feature is not supported or is disabled by IA32_MISC_ENABLE on the host, executing MONITOR or MWAIT instruction from the guest doesn't cause monitor/mwait VM exits, but a #UD.

So, we need to skip this test if CPUID.01H:ECX[3] is cleared.

Signed-off-by: Zide Chen zide.chen@intel.com --- tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c b/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c index 853802641e1e..cdbfcf7cac5c 100644 --- a/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c +++ b/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c @@ -75,6 +75,7 @@ int main(int argc, char *argv[]) struct ucall uc; int testcase;

+ TEST_REQUIRE(this_cpu_has(X86_FEATURE_MWAIT)); TEST_REQUIRE(kvm_has_cap(KVM_CAP_DISABLE_QUIRKS2));

vm = vm_create_with_one_vcpu(&vcpu, guest_code);