This is the first patch to enable the base extension selftest
for the SBI implementation in KVM. Test for other extensions
will be added later.
Signed-off-by: Haibo Xu <haibo1.xu@xxxxxxxxx>
---
tools/testing/selftests/kvm/Makefile | 1 +
.../selftests/kvm/include/riscv/processor.h | 8 +-
tools/testing/selftests/kvm/riscv/sbi_test.c | 95 +++++++++++++++++++
3 files changed, 103 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/kvm/riscv/sbi_test.c
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
index 741c7dc16afc..a6acbbcad757 100644
--- a/tools/testing/selftests/kvm/Makefile
+++ b/tools/testing/selftests/kvm/Makefile
@@ -189,6 +189,7 @@ TEST_GEN_PROGS_s390x += rseq_test
TEST_GEN_PROGS_s390x += set_memory_region_test
TEST_GEN_PROGS_s390x += kvm_binary_stats_test
+TEST_GEN_PROGS_riscv += riscv/sbi_test
TEST_GEN_PROGS_riscv += arch_timer
TEST_GEN_PROGS_riscv += demand_paging_test
TEST_GEN_PROGS_riscv += dirty_log_test
diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h b/tools/testing/selftests/kvm/include/riscv/processor.h
index ce473fe251dd..df530ac751c4 100644
--- a/tools/testing/selftests/kvm/include/riscv/processor.h
+++ b/tools/testing/selftests/kvm/include/riscv/processor.h
@@ -178,7 +178,13 @@ enum sbi_ext_id {
};
enum sbi_ext_base_fid {
- SBI_EXT_BASE_PROBE_EXT = 3,
+ SBI_EXT_BASE_GET_SPEC_VERSION = 0,
+ SBI_EXT_BASE_GET_IMP_ID,
+ SBI_EXT_BASE_GET_IMP_VERSION,
+ SBI_EXT_BASE_PROBE_EXT,
+ SBI_EXT_BASE_GET_MVENDORID,
+ SBI_EXT_BASE_GET_MARCHID,
+ SBI_EXT_BASE_GET_MIMPID,
};
struct sbiret {
diff --git a/tools/testing/selftests/kvm/riscv/sbi_test.c b/tools/testing/selftests/kvm/riscv/sbi_test.c
new file mode 100644
index 000000000000..b9378546e3b6
--- /dev/null
+++ b/tools/testing/selftests/kvm/riscv/sbi_test.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * sbi_test - SBI API test for KVM's SBI implementation.
+ *
+ * Copyright (c) 2024 Intel Corporation
+ *
+ * Test cover the following SBI extentions:
+ * - Base: All functions in this extension should be supported
+ */
+
+#include "kvm_util.h"
+#include "processor.h"
+#include "test_util.h"
+
+/*
+ * Test that all functions in the base extension must be supported
+ */
+static void base_ext_guest_code(void)
+{
+ struct sbiret ret;
+
+ /*
+ * Since the base extension was introduced in SBI Spec v0.2,
+ * assert if the implemented SBI version is below 0.2.
+ */
+ ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_SPEC_VERSION, 0,
+ 0, 0, 0, 0, 0);
+ __GUEST_ASSERT(!ret.error && ret.value >= 2, "Get Spec Version Error: ret.error=%ld, "
+ "ret.value=%ld\n", ret.error, ret.value);
+
+ ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_IMP_ID, 0,
+ 0, 0, 0, 0, 0);
+ __GUEST_ASSERT(!ret.error && ret.value == 3, "Get Imp ID Error: ret.error=%ld, "
+ "ret.value=%ld\n",
+ ret.error, ret.value);
+
+ ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_IMP_VERSION, 0,
+ 0, 0, 0, 0, 0);
+ __GUEST_ASSERT(!ret.error, "Get Imp Version Error: ret.error=%ld\n", ret.error);
+
+ ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_PROBE_EXT, SBI_EXT_BASE,
+ 0, 0, 0, 0, 0);
+ __GUEST_ASSERT(!ret.error && ret.value == 1, "Probe ext Error: ret.error=%ld, "
+ "ret.value=%ld\n",
+ ret.error, ret.value);
+
+ ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_MVENDORID, 0,
+ 0, 0, 0, 0, 0);
+ __GUEST_ASSERT(!ret.error, "Get Machine Vendor ID Error: ret.error=%ld\n", ret.error);
+
+ ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_MARCHID, 0,
+ 0, 0, 0, 0, 0);
+ __GUEST_ASSERT(!ret.error, "Get Machine Arch ID Error: ret.error=%ld\n", ret.error);
+
+ ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_MIMPID, 0,
+ 0, 0, 0, 0, 0);
+ __GUEST_ASSERT(!ret.error, "Get Machine Imp ID Error: ret.error=%ld\n", ret.error);
+
+ GUEST_DONE();
+}
+
+static void sbi_base_ext_test(void)
+{
+ struct kvm_vm *vm;
+ struct kvm_vcpu *vcpu;
+ struct ucall uc;
+
+ vm = vm_create_with_one_vcpu(&vcpu, base_ext_guest_code);
+ while (1) {
+ vcpu_run(vcpu);
+ TEST_ASSERT(vcpu->run->exit_reason == UCALL_EXIT_REASON,
+ "Unexpected exit reason: %u (%s),",
+ vcpu->run->exit_reason, exit_reason_str(vcpu->run->exit_reason));
+
+ switch (get_ucall(vcpu, &uc)) {
+ case UCALL_DONE:
+ goto done;
+ case UCALL_ABORT:
+ fprintf(stderr, "Guest assert failed!\n");
+ REPORT_GUEST_ASSERT(uc);
+ default:
+ TEST_FAIL("Unexpected ucall %lu", uc.cmd);
+ }
+ }
+
+done:
+ kvm_vm_free(vm);
+}
+
+int main(void)
+{
+ sbi_base_ext_test();
+
+ return 0;
+}
--
2.34.1
