Move the AMX test's kvm_cpu_has() checks before creating the VM+vCPU, there are no dependencies between the two operations. Opportunistically add a comment to call out that enabling off-by-default XSAVE-managed features must be done before KVM_GET_SUPPORTED_CPUID is cached. Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx> --- tools/testing/selftests/kvm/x86_64/amx_test.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/kvm/x86_64/amx_test.c b/tools/testing/selftests/kvm/x86_64/amx_test.c index 1256c7faadd3..bd72c6eb3b67 100644 --- a/tools/testing/selftests/kvm/x86_64/amx_test.c +++ b/tools/testing/selftests/kvm/x86_64/amx_test.c @@ -249,17 +249,21 @@ int main(int argc, char *argv[]) u32 amx_offset; int stage, ret; + /* + * Note, all off-by-default features must be enabled before anything + * caches KVM_GET_SUPPORTED_CPUID, e.g. before using kvm_cpu_has(). + */ vm_xsave_require_permission(XSTATE_XTILE_DATA_BIT); - /* Create VM */ - vm = vm_create_with_one_vcpu(&vcpu, guest_code); - TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_XFD)); TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_XSAVE)); TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_AMX_TILE)); TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_XTILECFG)); TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_XTILEDATA)); + /* Create VM */ + vm = vm_create_with_one_vcpu(&vcpu, guest_code); + TEST_ASSERT(kvm_cpu_has_p(X86_PROPERTY_XSTATE_MAX_SIZE), "KVM should enumerate max XSAVE size when XSAVE is supported"); xsave_restore_size = kvm_cpu_property(X86_PROPERTY_XSTATE_MAX_SIZE); -- 2.38.1.584.g0f3c55d4c2-goog
