From: David Woodhouse dwmw@amazon.co.uk
Signed-off-by: David Woodhouse dwmw@amazon.co.uk --- .../testing/selftests/kvm/aarch64/psci_test.c | 61 +++++++++++++++++++ 1 file changed, 61 insertions(+)
diff --git a/tools/testing/selftests/kvm/aarch64/psci_test.c b/tools/testing/selftests/kvm/aarch64/psci_test.c index 61731a950def..b7e37956aecf 100644 --- a/tools/testing/selftests/kvm/aarch64/psci_test.c +++ b/tools/testing/selftests/kvm/aarch64/psci_test.c @@ -54,6 +54,15 @@ static uint64_t psci_system_suspend(uint64_t entry_addr, uint64_t context_id) return res.a0; }
+static uint64_t psci_system_off2(uint64_t type) +{ + struct arm_smccc_res res; + + smccc_hvc(PSCI_1_3_FN64_SYSTEM_OFF2, type, 0, 0, 0, 0, 0, 0, &res); + + return res.a0; +} + static uint64_t psci_features(uint32_t func_id) { struct arm_smccc_res res; @@ -188,11 +197,63 @@ static void host_test_system_suspend(void) kvm_vm_free(vm); }
+static void guest_test_system_off2(void) +{ + uint64_t ret; + + /* assert that SYSTEM_OFF2 is discoverable */ + GUEST_ASSERT(psci_features(PSCI_1_3_FN_SYSTEM_OFF2) & + BIT(PSCI_1_3_HIBERNATE_TYPE_OFF)); + GUEST_ASSERT(psci_features(PSCI_1_3_FN64_SYSTEM_OFF2) & + BIT(PSCI_1_3_HIBERNATE_TYPE_OFF)); + + ret = psci_system_off2(PSCI_1_3_HIBERNATE_TYPE_OFF); + GUEST_SYNC(ret); +} + +static void host_test_system_off2(void) +{ + struct kvm_vcpu *source, *target; + uint64_t psci_version = 0; + struct kvm_run *run; + struct kvm_vm *vm; + + vm = setup_vm(guest_test_system_off2, &source, &target); + vcpu_get_reg(target, KVM_REG_ARM_PSCI_VERSION, &psci_version); + TEST_ASSERT(psci_version >= PSCI_VERSION(0, 2), + "Unexpected PSCI version %lu.%lu", + PSCI_VERSION_MAJOR(psci_version), + PSCI_VERSION_MINOR(psci_version)); + + if (psci_version < PSCI_VERSION(1,3)) + goto skip; + + vcpu_power_off(target); + run = source->run; + + enter_guest(source); + + TEST_ASSERT_KVM_EXIT_REASON(source, KVM_EXIT_SYSTEM_EVENT); + TEST_ASSERT(run->system_event.type == KVM_SYSTEM_EVENT_SHUTDOWN, + "Unhandled system event: %u (expected: %u)", + run->system_event.type, KVM_SYSTEM_EVENT_SHUTDOWN); + TEST_ASSERT(run->system_event.ndata >= 1, + "Unexpected amount of system event data: %u (expected, >= 1)", + run->system_event.ndata); + TEST_ASSERT(run->system_event.data[0] & KVM_SYSTEM_EVENT_SHUTDOWN_FLAG_PSCI_OFF2, + "PSCI_OFF2 flag not set. Flags %llu (expected %llu)", + run->system_event.data[0], KVM_SYSTEM_EVENT_SHUTDOWN_FLAG_PSCI_OFF2); + + skip: + kvm_vm_free(vm); +} + int main(void) { TEST_REQUIRE(kvm_has_cap(KVM_CAP_ARM_SYSTEM_SUSPEND));
host_test_cpu_on(); host_test_system_suspend(); + host_test_system_off2(); return 0; }