diff options
| author | Chenyi Qiang <chenyi.qiang@intel.com> | 2025-06-20 14:22:18 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2025-06-24 12:58:19 -0700 |
| commit | 0048ca5e9945f487fc055dad987ee4c7fdc1ed18 (patch) | |
| tree | 381791628353d1b29dd2f551caecf95a6b9d8be6 | |
| parent | 47bb584237cc285e3a860b70c01f7bda9dcfb05b (diff) | |
KVM: selftests: Add back the missing check of MONITOR/MWAIT availability
The revamp of monitor/mwait test missed the original check of feature
availability [*]. If MONITOR/MWAIT is not supported or is disabled by
IA32_MISC_ENABLE on the host, executing MONITOR or MWAIT instruction
from guest doesn't cause monitor/mwait VM exits, but a #UD.
[*] https://lore.kernel.org/all/20240411210237.34646-1-zide.chen@intel.com/
Reported-by: Xuelian Guo <xuelian.guo@intel.com>
Fixes: 80fd663590cf ("selftests: kvm: revamp MONITOR/MWAIT tests")
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Link: https://lore.kernel.org/r/20250620062219.342930-1-chenyi.qiang@intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | tools/testing/selftests/kvm/x86/monitor_mwait_test.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/x86/monitor_mwait_test.c b/tools/testing/selftests/kvm/x86/monitor_mwait_test.c index 390ae2d87493..0eb371c62ab8 100644 --- a/tools/testing/selftests/kvm/x86/monitor_mwait_test.c +++ b/tools/testing/selftests/kvm/x86/monitor_mwait_test.c @@ -74,6 +74,7 @@ int main(int argc, char *argv[]) int testcase; char test[80]; + TEST_REQUIRE(this_cpu_has(X86_FEATURE_MWAIT)); TEST_REQUIRE(kvm_has_cap(KVM_CAP_DISABLE_QUIRKS2)); ksft_print_header(); |