// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2026, Google LLC. */ #include "kvm_util.h" #include "vmx.h" #include "svm_util.h" #include "kselftest.h" #define L2_GUEST_STACK_SIZE 64 static void l2_guest_code(void) { unsigned long efer = rdmsr(MSR_EFER); /* generic_svm_setup() initializes EFER_SVME set for L2 */ GUEST_ASSERT(efer & EFER_SVME); wrmsr(MSR_EFER, efer & ~EFER_SVME); /* Unreachable, L1 should be shutdown */ GUEST_ASSERT(0); } static void l1_guest_code(struct svm_test_data *svm) { unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE]; generic_svm_setup(svm, l2_guest_code, &l2_guest_stack[L2_GUEST_STACK_SIZE]); run_guest(svm->vmcb, svm->vmcb_gpa); /* Unreachable, L1 should be shutdown */ GUEST_ASSERT(0); } int main(int argc, char *argv[]) { struct kvm_vcpu *vcpu; struct kvm_vm *vm; gva_t nested_gva = 0; TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM)); vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code); vcpu_alloc_svm(vm, &nested_gva); vcpu_args_set(vcpu, 1, nested_gva); vcpu_run(vcpu); TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_SHUTDOWN); kvm_vm_free(vm); return 0; }