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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * svm_nested_shutdown_test4 *5 * Copyright (C) 2022, Red Hat, Inc.6 *7 * Nested SVM testing: test that unintercepted shutdown in L2 doesn't crash the host8 */9 10#include "test_util.h"11#include "kvm_util.h"12#include "processor.h"13#include "svm_util.h"14 15static void l2_guest_code(struct svm_test_data *svm)16{17 __asm__ __volatile__("ud2");18}19 20static void l1_guest_code(struct svm_test_data *svm, struct idt_entry *idt)21{22 #define L2_GUEST_STACK_SIZE 6423 unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE];24 struct vmcb *vmcb = svm->vmcb;25 26 generic_svm_setup(svm, l2_guest_code,27 &l2_guest_stack[L2_GUEST_STACK_SIZE]);28 29 vmcb->control.intercept &= ~(BIT(INTERCEPT_SHUTDOWN));30 31 idt[6].p = 0; // #UD is intercepted but its injection will cause #NP32 idt[11].p = 0; // #NP is not intercepted and will cause another33 // #NP that will be converted to #DF34 idt[8].p = 0; // #DF will cause #NP which will cause SHUTDOWN35 36 run_guest(vmcb, svm->vmcb_gpa);37 38 /* should not reach here */39 GUEST_ASSERT(0);40}41 42int main(int argc, char *argv[])43{44 struct kvm_vcpu *vcpu;45 vm_vaddr_t svm_gva;46 struct kvm_vm *vm;47 48 TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM));49 50 vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code);51 vcpu_alloc_svm(vm, &svm_gva);52 53 vcpu_args_set(vcpu, 2, svm_gva, vm->arch.idt);54 55 vcpu_run(vcpu);56 TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_SHUTDOWN);57 58 kvm_vm_free(vm);59}60