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// 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;
vm_vaddr_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;
}
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