[6/6] KVM: selftests: enlightened VMPTRLD with an incorrect GPA

Commit Message

Vitaly Kuznetsov March 9, 2020, 3:52 p.m. UTC

Check that guest doesn't hang when an invalid eVMCS GPA is specified.
Testing that #UD is injected would probably be better but selftests lack
the infrastructure currently.

Signed-off-by: Vitaly Kuznetsov <[e-mail]>
---
 tools/testing/selftests/kvm/x86_64/evmcs_test.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

Patch

diff --git a/tools/testing/selftests/kvm/x86_64/evmcs_test.c b/tools/testing/selftests/kvm/x86_64/evmcs_test.c
index 10e9c158dc96..fed8f933748b 100644
--- a/tools/testing/selftests/kvm/x86_64/evmcs_test.c
+++ b/tools/testing/selftests/kvm/x86_64/evmcs_test.c
@@ -72,6 +72,10 @@  void guest_code(struct vmx_pages *vmx_pages)
 		l1_guest_code(vmx_pages);
 
 	GUEST_DONE();
+
+	/* Try enlightened vmptrld with an incorrect GPA */
+	evmcs_vmptrld(0xdeadbeef, vmx_pages->enlightened_vmcs);
+	GUEST_ASSERT(vmlaunch());
 }
 
 int main(int argc, char *argv[])
@@ -120,7 +124,7 @@  int main(int argc, char *argv[])
 		case UCALL_SYNC:
 			break;
 		case UCALL_DONE:
-			goto done;
+			goto part1_done;
 		default:
 			TEST_ASSERT(false, "Unknown ucall 0x%x.", uc.cmd);
 		}
@@ -152,6 +156,10 @@  int main(int argc, char *argv[])
 			    (ulong) regs2.rdi, (ulong) regs2.rsi);
 	}
 
-done:
+part1_done:
+	_vcpu_run(vm, VCPU_ID);
+	TEST_ASSERT(run->exit_reason == KVM_EXIT_SHUTDOWN,
+		    "Unexpected successful VMEnter with invalid eVMCS pointer!");
+
 	kvm_vm_free(vm);
 }