diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-01-29 17:18:21 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-02-04 05:27:36 -0500 |
| commit | fb18d053b7f823e6a9acf62d1be5b986ca614253 (patch) | |
| tree | 00d2972c8b56958c97d78ec6a2b2eb8598e6cc7b /tools/testing/selftests/kvm/include | |
| parent | 805a0f83907cface14897ada15b61190f3bc2962 (diff) | |
selftest: kvm: x86: test KVM_GET_CPUID2 and guest visible CPUIDs against KVM_GET_SUPPORTED_CPUID
Commit 181f494888d5 ("KVM: x86: fix CPUID entries returned by
KVM_GET_CPUID2 ioctl") revealed that we're not testing KVM_GET_CPUID2
ioctl at all. Add a test for it and also check that from inside the guest
visible CPUIDs are equal to it's output.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210129161821.74635-1-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests/kvm/include')
| -rw-r--r-- | tools/testing/selftests/kvm/include/x86_64/processor.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index fce4cd4d4895..582dfb23f30c 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -263,6 +263,19 @@ static inline void outl(uint16_t port, uint32_t value) __asm__ __volatile__("outl %%eax, %%dx" : : "d"(port), "a"(value)); } +static inline void cpuid(uint32_t *eax, uint32_t *ebx, + uint32_t *ecx, uint32_t *edx) +{ + /* ecx is often an input as well as an output. */ + asm volatile("cpuid" + : "=a" (*eax), + "=b" (*ebx), + "=c" (*ecx), + "=d" (*edx) + : "0" (*eax), "2" (*ecx) + : "memory"); +} + #define SET_XMM(__var, __xmm) \ asm volatile("movq %0, %%"#__xmm : : "r"(__var) : #__xmm) @@ -341,6 +354,7 @@ struct kvm_msr_list *kvm_get_msr_index_list(void); uint64_t kvm_get_feature_msr(uint64_t msr_index); struct kvm_cpuid2 *kvm_get_supported_cpuid(void); +struct kvm_cpuid2 *vcpu_get_cpuid(struct kvm_vm *vm, uint32_t vcpuid); void vcpu_set_cpuid(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_cpuid2 *cpuid); |