diff options
Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/exit_on_emulation_failure_test.c')
-rw-r--r-- | tools/testing/selftests/kvm/x86_64/exit_on_emulation_failure_test.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/exit_on_emulation_failure_test.c b/tools/testing/selftests/kvm/x86_64/exit_on_emulation_failure_test.c new file mode 100644 index 000000000000..6c2e5e0ceb1f --- /dev/null +++ b/tools/testing/selftests/kvm/x86_64/exit_on_emulation_failure_test.c @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2022, Google LLC. + * + * Test for KVM_CAP_EXIT_ON_EMULATION_FAILURE. + */ + +#define _GNU_SOURCE /* for program_invocation_short_name */ + +#include "flds_emulation.h" + +#include "test_util.h" + +#define MMIO_GPA 0x700000000 +#define MMIO_GVA MMIO_GPA + +static void guest_code(void) +{ + /* Execute flds with an MMIO address to force KVM to emulate it. */ + flds(MMIO_GVA); + GUEST_DONE(); +} + +int main(int argc, char *argv[]) +{ + struct kvm_vcpu *vcpu; + struct kvm_vm *vm; + + TEST_REQUIRE(kvm_has_cap(KVM_CAP_EXIT_ON_EMULATION_FAILURE)); + + vm = vm_create_with_one_vcpu(&vcpu, guest_code); + vm_enable_cap(vm, KVM_CAP_EXIT_ON_EMULATION_FAILURE, 1); + virt_map(vm, MMIO_GVA, MMIO_GPA, 1); + + vcpu_run(vcpu); + handle_flds_emulation_failure_exit(vcpu); + vcpu_run(vcpu); + TEST_ASSERT_EQ(get_ucall(vcpu, NULL), UCALL_DONE); + + kvm_vm_free(vm); + return 0; +} |