diff options
Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/cpuid_test.c')
-rw-r--r-- | tools/testing/selftests/kvm/x86_64/cpuid_test.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/cpuid_test.c b/tools/testing/selftests/kvm/x86_64/cpuid_test.c index 2fc3ad9c887e..d3c3aa93f090 100644 --- a/tools/testing/selftests/kvm/x86_64/cpuid_test.c +++ b/tools/testing/selftests/kvm/x86_64/cpuid_test.c @@ -163,6 +163,25 @@ static void set_cpuid_after_run(struct kvm_vcpu *vcpu) ent->eax = eax; } +static void test_get_cpuid2(struct kvm_vcpu *vcpu) +{ + struct kvm_cpuid2 *cpuid = allocate_kvm_cpuid2(vcpu->cpuid->nent + 1); + int i, r; + + vcpu_ioctl(vcpu, KVM_GET_CPUID2, cpuid); + TEST_ASSERT(cpuid->nent == vcpu->cpuid->nent, + "KVM didn't update nent on success, wanted %u, got %u\n", + vcpu->cpuid->nent, cpuid->nent); + + for (i = 0; i < vcpu->cpuid->nent; i++) { + cpuid->nent = i; + r = __vcpu_ioctl(vcpu, KVM_GET_CPUID2, cpuid); + TEST_ASSERT(r && errno == E2BIG, KVM_IOCTL_ERROR(KVM_GET_CPUID2, r)); + TEST_ASSERT(cpuid->nent == i, "KVM modified nent on failure"); + } + free(cpuid); +} + int main(void) { struct kvm_vcpu *vcpu; @@ -183,5 +202,7 @@ int main(void) set_cpuid_after_run(vcpu); + test_get_cpuid2(vcpu); + kvm_vm_free(vm); } |