Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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}