From 69713940d2b4de34a6923fc202e1796dc2f79604 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Fri, 10 Mar 2023 16:46:10 -0800 Subject: [PATCH] KVM: selftests: Drop now-redundant checks on PERF_CAPABILITIES writes Now that vcpu_set_msr() verifies the expected "read what was wrote" semantics of all durable MSRs, including PERF_CAPABILITIES, drop the now-redundant manual checks in the VMX PMU caps test. Link: https://lore.kernel.org/r/20230311004618.920745-14-seanjc@google.com Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c index 035470b38400..f7a27b5c949b 100644 --- a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c +++ b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c @@ -51,10 +51,7 @@ static void test_basic_perf_capabilities(union perf_capabilities host_cap) struct kvm_vm *vm = vm_create_with_one_vcpu(&vcpu, NULL); vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, 0); - ASSERT_EQ(vcpu_get_msr(vcpu, MSR_IA32_PERF_CAPABILITIES), 0); - vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, host_cap.capabilities); - ASSERT_EQ(vcpu_get_msr(vcpu, MSR_IA32_PERF_CAPABILITIES), host_cap.capabilities); kvm_vm_free(vm); } @@ -67,9 +64,6 @@ static void test_fungible_perf_capabilities(union perf_capabilities host_cap) /* testcase 1, set capabilities when we have PDCM bit */ vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, PMU_CAP_FW_WRITES); - /* check capabilities can be retrieved with KVM_GET_MSR */ - ASSERT_EQ(vcpu_get_msr(vcpu, MSR_IA32_PERF_CAPABILITIES), PMU_CAP_FW_WRITES); - /* check whatever we write with KVM_SET_MSR is _not_ modified */ vcpu_run(vcpu); ASSERT_EQ(vcpu_get_msr(vcpu, MSR_IA32_PERF_CAPABILITIES), PMU_CAP_FW_WRITES); -- 2.25.1