diff options
Diffstat (limited to 'tools/testing/selftests/kvm/lib/x86_64/processor.c')
-rw-r--r-- | tools/testing/selftests/kvm/lib/x86_64/processor.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 5a15264c2ef2..18483df2b331 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -1300,3 +1300,36 @@ uint64_t kvm_hypercall(uint64_t nr, uint64_t a0, uint64_t a1, uint64_t a2, : "b"(a0), "c"(a1), "d"(a2), "S"(a3)); return r; } + +struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(void) +{ + static struct kvm_cpuid2 *cpuid; + int ret; + int kvm_fd; + + if (cpuid) + return cpuid; + + cpuid = allocate_kvm_cpuid2(); + kvm_fd = open(KVM_DEV_PATH, O_RDONLY); + if (kvm_fd < 0) + exit(KSFT_SKIP); + + ret = ioctl(kvm_fd, KVM_GET_SUPPORTED_HV_CPUID, cpuid); + TEST_ASSERT(ret == 0, "KVM_GET_SUPPORTED_HV_CPUID failed %d %d\n", + ret, errno); + + close(kvm_fd); + return cpuid; +} + +struct kvm_cpuid2 *vcpu_get_supported_hv_cpuid(struct kvm_vm *vm, uint32_t vcpuid) +{ + static struct kvm_cpuid2 *cpuid; + + cpuid = allocate_kvm_cpuid2(); + + vcpu_ioctl(vm, vcpuid, KVM_GET_SUPPORTED_HV_CPUID, cpuid); + + return cpuid; +} |