Add BIT_ULL(35) (CpuidUserDis) to the valid mask in hwcr_msr_test, now that KVM accepts writes to this bit when the guest CPUID advertises CpuidUserDis.
Signed-off-by: Jim Mattson <[email protected]> --- tools/testing/selftests/kvm/include/x86/processor.h | 1 + tools/testing/selftests/kvm/x86/hwcr_msr_test.c | 9 +++++++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/include/x86/processor.h b/tools/testing/selftests/kvm/include/x86/processor.h index 77f576ee7789..9cb1efd910ec 100644 --- a/tools/testing/selftests/kvm/include/x86/processor.h +++ b/tools/testing/selftests/kvm/include/x86/processor.h @@ -209,6 +209,7 @@ struct kvm_x86_cpu_feature { #define X86_FEATURE_SEV KVM_X86_CPU_FEATURE(0x8000001F, 0, EAX, 1) #define X86_FEATURE_SEV_ES KVM_X86_CPU_FEATURE(0x8000001F, 0, EAX, 3) #define X86_FEATURE_SEV_SNP KVM_X86_CPU_FEATURE(0x8000001F, 0, EAX, 4) +#define X86_FEATURE_GP_ON_USER_CPUID KVM_X86_CPU_FEATURE(0x80000021, 0, EAX, 17) #define X86_FEATURE_PERFMON_V2 KVM_X86_CPU_FEATURE(0x80000022, 0, EAX, 0) #define X86_FEATURE_LBR_PMC_FREEZE KVM_X86_CPU_FEATURE(0x80000022, 0, EAX, 2) diff --git a/tools/testing/selftests/kvm/x86/hwcr_msr_test.c b/tools/testing/selftests/kvm/x86/hwcr_msr_test.c index 8e20a03b3329..53b7971aa072 100644 --- a/tools/testing/selftests/kvm/x86/hwcr_msr_test.c +++ b/tools/testing/selftests/kvm/x86/hwcr_msr_test.c @@ -11,12 +11,17 @@ void test_hwcr_bit(struct kvm_vcpu *vcpu, unsigned int bit) { const u64 ignored = BIT_ULL(3) | BIT_ULL(6) | BIT_ULL(8); - const u64 valid = BIT_ULL(18) | BIT_ULL(24); - const u64 legal = ignored | valid; + u64 valid = BIT_ULL(18) | BIT_ULL(24); u64 val = BIT_ULL(bit); u64 actual; + u64 legal; int r; + if (kvm_cpu_has(X86_FEATURE_GP_ON_USER_CPUID)) + valid |= BIT_ULL(35); + + legal = ignored | valid; + r = _vcpu_set_msr(vcpu, MSR_K7_HWCR, val); TEST_ASSERT(val & ~legal ? !r : r == 1, "Expected KVM_SET_MSRS(MSR_K7_HWCR) = 0x%lx to %s", -- 2.54.0.631.ge1b05301d1-goog
