| Message ID | 20240411210237.34646-1-zide.chen@intel.com |
|---|---|
| State | New |
| Headers | show |
| Series | KVM: selftests: Make monitor_mwait require MONITOR/MWAIT feature | expand |
On Thu, 11 Apr 2024 14:02:37 -0700, Zide Chen wrote: > 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. > > > [...] Applied to kvm-x86 selftests, thanks! [1/1] KVM: selftests: Make monitor_mwait require MONITOR/MWAIT feature https://github.com/kvm-x86/linux/commit/72cd4de01d8b -- https://github.com/kvm-x86/linux/tree/next
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);
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(+)