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Sampat" To: CC: , , , , , , , Subject: [PATCH v3 4/9] KVM: selftests: SEV IOCTL test Date: Thu, 5 Sep 2024 07:41:02 -0500 Message-ID: <20240905124107.6954-5-pratikrajesh.sampat@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240905124107.6954-1-pratikrajesh.sampat@amd.com> References: <20240905124107.6954-1-pratikrajesh.sampat@amd.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB03.amd.com (10.181.40.144) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000042AD:EE_|PH8PR12MB7423:EE_ X-MS-Office365-Filtering-Correlation-Id: acd33b14-c9f4-49f9-603f-08dccda8272d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|36860700013|1800799024; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(376014)(82310400026)(36860700013)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Sep 2024 12:42:07.3690 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: acd33b14-c9f4-49f9-603f-08dccda8272d X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000042AD.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB7423 Introduce tests for sev and sev-es ioctl that exercises the boot path of launch, update and finish on an invalid policy. Signed-off-by: Pratik R. Sampat Tested-by: Peter Gonda Tested-by: Srikanth Aithal --- .../selftests/kvm/x86_64/sev_smoke_test.c | 84 +++++++++++++++++++ 1 file changed, 84 insertions(+) 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 8e798f5a2a53..5fa4ee27609b 100644 --- a/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c +++ b/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c @@ -142,12 +142,96 @@ static void test_sync_vmsa(uint32_t type, uint64_t policy) kvm_vm_free(vm); } +static void sev_guest_neg_status_assert(struct kvm_vm *vm, uint32_t type) +{ + struct kvm_sev_guest_status status; + int ret; + + ret = __vm_sev_ioctl(vm, KVM_SEV_GUEST_STATUS, &status); + TEST_ASSERT(ret, "KVM_SEV_GUEST_STATUS should fail, invalid VM Type."); +} + +static void vm_sev_es_launch_neg(struct kvm_vm *vm, uint32_t type, uint64_t policy) +{ + int ret; + + /* Launch start with policy SEV_POLICY_NO_DBG (0x0) */ + ret = __sev_vm_launch_start(vm, 0); + TEST_ASSERT(ret, + "KVM_SEV_LAUNCH_START should fail due to type (%d) - policy(0x0) mismatch", + type); + + ret = __sev_vm_launch_update(vm, policy); + TEST_ASSERT(ret, + "KVM_SEV_LAUNCH_UPDATE should fail due to LAUNCH_START. type: %d policy: 0x%lx", + type, policy); + sev_guest_neg_status_assert(vm, type); + + ret = __sev_vm_launch_measure(vm, alloca(256)); + TEST_ASSERT(ret, + "KVM_SEV_LAUNCH_UPDATE should fail due to LAUNCH_START. type: %d policy: 0x%lx", + type, policy); + sev_guest_neg_status_assert(vm, type); + + ret = __sev_vm_launch_finish(vm); + TEST_ASSERT(ret, + "KVM_SEV_LAUNCH_UPDATE should fail due to LAUNCH_START. type: %d policy: 0x%lx", + type, policy); + sev_guest_neg_status_assert(vm, type); +} + +/* + * Test for SEV ioctl launch path + * VMs of the type SEV and SEV-ES are created, however they are launched with + * an empty policy to observe the effect on the control flow of launching a VM. + * + * SEV - Expected to pass through the path of launch start, update, measure, + * and finish. vcpu_run expected to fail with error KVM_EXIT_IO. + * + * SEV-ES - Expected to fail the launch start as vm created with type + * KVM_X86_DEFAULT_VM but policy passed to launch start is KVM_X86_SEV_ES_VM. + * Post this, calls that pass the correct policy to update, measure, and finish + * are also expected to fail cascading. + */ +static void test_sev_launch(void *guest_code, uint32_t type, uint64_t policy) +{ + struct kvm_vcpu *vcpu; + int exp_exit_reason; + struct kvm_vm *vm; + struct ucall uc; + + vm = vm_sev_create_with_one_vcpu(type, guest_code, &vcpu); + + if (type == KVM_X86_SEV_VM) { + sev_vm_launch(vm, 0); + sev_vm_launch_measure(vm, alloca(256)); + sev_vm_launch_finish(vm); + } else { + vm_sev_es_launch_neg(vm, type, policy); + } + + vcpu_run(vcpu); + get_ucall(vcpu, &uc); + if (type == KVM_X86_SEV_VM) + exp_exit_reason = KVM_EXIT_IO; + else + exp_exit_reason = KVM_EXIT_FAIL_ENTRY; + + TEST_ASSERT(vcpu->run->exit_reason == exp_exit_reason, + "vcpu_run failed exit expected: %d, got: %d", + exp_exit_reason, vcpu->run->exit_reason); + + kvm_vm_free(vm); +} + static void test_sev(void *guest_code, uint32_t type, uint64_t policy) { struct kvm_vcpu *vcpu; struct kvm_vm *vm; struct ucall uc; + test_sev_launch(guest_code, type, policy); + vm = vm_sev_create_with_one_vcpu(type, guest_code, &vcpu); /* TODO: Validate the measurement is as expected. */