exit_on_emulation_failure_test.c

 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#include "flds_emulation.h"
 8#include "test_util.h"
 9#include "ucall_common.h"
10
11#define MMIO_GPA	0x700000000
12#define MMIO_GVA	MMIO_GPA
13
14static void guest_code(void)
15{
16	/* Execute flds with an MMIO address to force KVM to emulate it. */
17	flds(MMIO_GVA);
18	GUEST_DONE();
19}
20
21int main(int argc, char *argv[])
22{
23	struct kvm_vcpu *vcpu;
24	struct kvm_vm *vm;
25
26	TEST_REQUIRE(kvm_has_cap(KVM_CAP_EXIT_ON_EMULATION_FAILURE));
27
28	vm = vm_create_with_one_vcpu(&vcpu, guest_code);
29	vm_enable_cap(vm, KVM_CAP_EXIT_ON_EMULATION_FAILURE, 1);
30	virt_map(vm, MMIO_GVA, MMIO_GPA, 1);
31
32	vcpu_run(vcpu);
33	handle_flds_emulation_failure_exit(vcpu);
34	vcpu_run(vcpu);
35	TEST_ASSERT_EQ(get_ucall(vcpu, NULL), UCALL_DONE);
36
37	kvm_vm_free(vm);
38	return 0;
39}