diff options
| author | Peter Gonda <[email protected]> | 2024-07-09 11:29:36 -0700 |
|---|---|---|
| committer | Sean Christopherson <[email protected]> | 2024-08-29 19:37:11 -0700 |
| commit | 2f6fcfa1f4264c1f035ddd092ebd046499f7cbea (patch) | |
| tree | a336694e761247ebc92ef673a99b87af0faedd2a | |
| parent | c0d1a39d1d20e5e770bad72bbe1e9d4fa1367e28 (diff) | |
KVM: selftests: Add SEV-ES shutdown test
Regression test for ae20eef5 ("KVM: SVM: Update SEV-ES shutdown intercepts
with more metadata"). Test confirms userspace is correctly indicated of
a guest shutdown not previous behavior of an EINVAL from KVM_RUN.
Cc: Paolo Bonzini <[email protected]>
Cc: Sean Christopherson <[email protected]>
Cc: Alper Gun <[email protected]>
Cc: Tom Lendacky <[email protected]>
Cc: Michael Roth <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Peter Gonda <[email protected]>
Tested-by: Pratik R. Sampat <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[sean: clobber IDT to ensure #UD leads to SHUTDOWN]
Signed-off-by: Sean Christopherson <[email protected]>
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/sev_smoke_test.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c b/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c index 7c70c0da4fb7..2e9197eb1652 100644 --- a/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c +++ b/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c @@ -160,6 +160,36 @@ static void test_sev(void *guest_code, uint64_t policy) kvm_vm_free(vm); } +static void guest_shutdown_code(void) +{ + struct desc_ptr idt; + + /* Clobber the IDT so that #UD is guaranteed to trigger SHUTDOWN. */ + memset(&idt, 0, sizeof(idt)); + __asm__ __volatile__("lidt %0" :: "m"(idt)); + + __asm__ __volatile__("ud2"); +} + +static void test_sev_es_shutdown(void) +{ + struct kvm_vcpu *vcpu; + struct kvm_vm *vm; + + uint32_t type = KVM_X86_SEV_ES_VM; + + vm = vm_sev_create_with_one_vcpu(type, guest_shutdown_code, &vcpu); + + vm_sev_launch(vm, SEV_POLICY_ES, NULL); + + vcpu_run(vcpu); + TEST_ASSERT(vcpu->run->exit_reason == KVM_EXIT_SHUTDOWN, + "Wanted SHUTDOWN, got %s", + exit_reason_str(vcpu->run->exit_reason)); + + kvm_vm_free(vm); +} + int main(int argc, char *argv[]) { TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SEV)); @@ -171,6 +201,8 @@ int main(int argc, char *argv[]) test_sev(guest_sev_es_code, SEV_POLICY_ES | SEV_POLICY_NO_DBG); test_sev(guest_sev_es_code, SEV_POLICY_ES); + test_sev_es_shutdown(); + if (kvm_has_cap(KVM_CAP_XCRS) && (xgetbv(0) & XFEATURE_MASK_X87_AVX) == XFEATURE_MASK_X87_AVX) { test_sync_vmsa(0); |