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[linux.git] / tools / testing / selftests / kvm / x86 / 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
14 static 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
21 int 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 }
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