1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2022, Google LLC. 4 * 5 * Test for KVM_CAP_EXIT_ON_EMULATION_FAILURE. 6 */ 7 8 #define _GNU_SOURCE /* for program_invocation_short_name */ 9 10 #include "flds_emulation.h" 11 12 #include "test_util.h" 13 14 #define MMIO_GPA 0x700000000 15 #define MMIO_GVA MMIO_GPA 16 17 static void guest_code(void) 18 { 19 /* Execute flds with an MMIO address to force KVM to emulate it. */ 20 flds(MMIO_GVA); 21 GUEST_DONE(); 22 } 23 24 int main(int argc, char *argv[]) 25 { 26 struct kvm_vcpu *vcpu; 27 struct kvm_vm *vm; 28 29 /* Tell stdout not to buffer its content */ 30 setbuf(stdout, NULL); 31 32 TEST_REQUIRE(kvm_has_cap(KVM_CAP_EXIT_ON_EMULATION_FAILURE)); 33 34 vm = vm_create_with_one_vcpu(&vcpu, guest_code); 35 vm_enable_cap(vm, KVM_CAP_EXIT_ON_EMULATION_FAILURE, 1); 36 virt_map(vm, MMIO_GVA, MMIO_GPA, 1); 37 38 vcpu_run(vcpu); 39 handle_flds_emulation_failure_exit(vcpu); 40 vcpu_run(vcpu); 41 ASSERT_EQ(get_ucall(vcpu, NULL), UCALL_DONE); 42 43 kvm_vm_free(vm); 44 return 0; 45 } 46