[PATCH 4/5] KVM: selftests: Make hyperv_clock require TSC based system clocksource

Vitaly Kuznetsov
2024-01-09T14:11:37Z

KVM sets up Hyper-V TSC page clocksource for its guests when system
clocksource is 'based on TSC' (see gtod_is_based_on_tsc()), running
hyperv_clock with any other clocksource leads to imminent failure.

Add the missing requirement to make the test skip gracefully.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
tools/testing/selftests/kvm/x86_64/hyperv_clock.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_clock.c b/tools/testing/selftests/kvm/x86_64/hyperv_clock.c
index f5e1e98f04f9..02cc3c560566 100644
--- a/tools/testing/selftests/kvm/x86_64/hyperv_clock.c
+++ b/tools/testing/selftests/kvm/x86_64/hyperv_clock.c
@@ -212,6 +212,7 @@ int main(void)
int stage;

TEST_REQUIRE(kvm_has_cap(KVM_CAP_HYPERV_TIME));
+ TEST_REQUIRE(sys_clocksource_is_based_on_tsc());

vm = vm_create_with_one_vcpu(&vcpu, guest_main);

--
2.43.0