From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
Anup Patel <anup@brainfault.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Janosch Frank <frankja@linux.ibm.com>,
Claudio Imbrenda <imbrenda@linux.ibm.com>,
Sean Christopherson <seanjc@google.com>
Cc: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
kvmarm@lists.linux.dev, kvm-riscv@lists.infradead.org,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
Vishal Annapurve <vannapurve@google.com>,
Ackerley Tng <ackerleytng@google.com>,
Andrew Jones <andrew.jones@linux.dev>,
Tom Lendacky <thomas.lendacky@amd.com>,
Michael Roth <michael.roth@amd.com>,
Carlos Bilbao <carlos.bilbao@amd.com>,
Peter Gonda <pgonda@google.com>,
Itaru Kitayama <itaru.kitayama@fujitsu.com>
Subject: [PATCH v9 10/11] KVM: selftests: Add a basic SEV smoke test
Date: Thu, 22 Feb 2024 16:42:57 -0800 [thread overview]
Message-ID: <20240223004258.3104051-11-seanjc@google.com> (raw)
In-Reply-To: <20240223004258.3104051-1-seanjc@google.com>
From: Peter Gonda <pgonda@google.com>
Add a basic smoke test for SEV guests to verify that KVM can launch an
SEV guest and run a few instructions without exploding. To verify that
SEV is indeed enabled, assert that SEV is reported as enabled in
MSR_AMD64_SEV, a.k.a. SEV_STATUS, which cannot be intercepted by KVM
(architecturally enforced).
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Vishal Annapurve <vannapurve@google.com>
Cc: Ackerly Tng <ackerleytng@google.com>
cc: Andrew Jones <andrew.jones@linux.dev>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Michael Roth <michael.roth@amd.com>
Suggested-by: Michael Roth <michael.roth@amd.com>
Tested-by: Carlos Bilbao <carlos.bilbao@amd.com>
Signed-off-by: Peter Gonda <pgonda@google.com>
[sean: rename to "sev_smoke_test"]
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
tools/testing/selftests/kvm/Makefile | 1 +
.../selftests/kvm/x86_64/sev_smoke_test.c | 58 +++++++++++++++++++
2 files changed, 59 insertions(+)
create mode 100644 tools/testing/selftests/kvm/x86_64/sev_smoke_test.c
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
index 169b6ee8f733..da20e6bb43ed 100644
--- a/tools/testing/selftests/kvm/Makefile
+++ b/tools/testing/selftests/kvm/Makefile
@@ -120,6 +120,7 @@ TEST_GEN_PROGS_x86_64 += x86_64/vmx_pmu_caps_test
TEST_GEN_PROGS_x86_64 += x86_64/xen_shinfo_test
TEST_GEN_PROGS_x86_64 += x86_64/xen_vmcall_test
TEST_GEN_PROGS_x86_64 += x86_64/sev_migrate_tests
+TEST_GEN_PROGS_x86_64 += x86_64/sev_smoke_test
TEST_GEN_PROGS_x86_64 += x86_64/amx_test
TEST_GEN_PROGS_x86_64 += x86_64/max_vcpuid_cap_test
TEST_GEN_PROGS_x86_64 += x86_64/triple_fault_event_test
diff --git a/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c b/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c
new file mode 100644
index 000000000000..54d72efd9b4d
--- /dev/null
+++ b/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+
+#include "test_util.h"
+#include "kvm_util.h"
+#include "processor.h"
+#include "svm_util.h"
+#include "linux/psp-sev.h"
+#include "sev.h"
+
+static void guest_sev_code(void)
+{
+ GUEST_ASSERT(this_cpu_has(X86_FEATURE_SEV));
+ GUEST_ASSERT(rdmsr(MSR_AMD64_SEV) & MSR_AMD64_SEV_ENABLED);
+
+ GUEST_DONE();
+}
+
+static void test_sev(void *guest_code, uint64_t policy)
+{
+ struct kvm_vcpu *vcpu;
+ struct kvm_vm *vm;
+ struct ucall uc;
+
+ vm = vm_sev_create_with_one_vcpu(policy, guest_code, &vcpu);
+
+ for (;;) {
+ vcpu_run(vcpu);
+
+ switch (get_ucall(vcpu, &uc)) {
+ case UCALL_SYNC:
+ continue;
+ case UCALL_DONE:
+ return;
+ case UCALL_ABORT:
+ REPORT_GUEST_ASSERT(uc);
+ default:
+ TEST_FAIL("Unexpected exit: %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));
+
+ test_sev(guest_sev_code, SEV_POLICY_NO_DBG);
+ test_sev(guest_sev_code, 0);
+
+ return 0;
+}
--
2.44.0.rc0.258.g7320e95886-goog
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next prev parent reply other threads:[~2024-02-23 0:46 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-23 0:42 [PATCH v9 00/11] KVM: selftests: Add SEV and SEV-ES smoke tests Sean Christopherson
2024-02-23 0:42 ` [PATCH v9 01/11] KVM: selftests: Extend VM creation's @shape to allow control of VM subtype Sean Christopherson
2024-02-23 0:42 ` [PATCH v9 02/11] KVM: selftests: Make sparsebit structs const where appropriate Sean Christopherson
2024-02-23 0:42 ` [PATCH v9 03/11] KVM: selftests: Add a macro to iterate over a sparsebit range Sean Christopherson
2024-02-23 0:42 ` [PATCH v9 04/11] KVM: selftests: Add support for allocating/managing protected guest memory Sean Christopherson
2024-02-23 0:42 ` [PATCH v9 05/11] KVM: selftests: Add support for protected vm_vaddr_* allocations Sean Christopherson
2024-02-23 0:42 ` [PATCH v9 06/11] KVM: selftests: Explicitly ucall pool from shared memory Sean Christopherson
2024-02-23 0:42 ` [PATCH v9 07/11] KVM: selftests: Allow tagging protected memory in guest page tables Sean Christopherson
2024-02-28 0:14 ` Xiaoyao Li
2024-02-28 2:12 ` Sean Christopherson
2024-02-29 0:53 ` Sean Christopherson
2024-02-23 0:42 ` [PATCH v9 08/11] KVM: selftests: Add library for creating and interacting with SEV guests Sean Christopherson
2024-02-23 0:42 ` [PATCH v9 09/11] KVM: selftests: Use the SEV library APIs in the intra-host migration test Sean Christopherson
2024-02-23 0:42 ` Sean Christopherson [this message]
2024-02-23 0:42 ` [PATCH v9 11/11] KVM: selftests: Add a basic SEV-ES smoke test Sean Christopherson
2024-02-26 17:06 ` [PATCH v9 00/11] KVM: selftests: Add SEV and SEV-ES smoke tests Carlos Bilbao
2024-02-27 2:21 ` Sean Christopherson
2024-02-28 22:40 ` Sean Christopherson
2024-02-29 0:55 ` Sean Christopherson
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