[PATCH v2 024/144] KVM: selftests: Move KVM_CREATE_DEVICE_TEST code to separate helper

Sean Christopherson
2022-06-03T00:46:07Z

Move KVM_CREATE_DEVICE_TEST to its own helper, identifying "real" versus
"test" device creation based on a hardcoded boolean buried in the middle
of a param list is painful for readers.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
.../testing/selftests/kvm/aarch64/vgic_init.c | 10 ++++----
.../selftests/kvm/include/kvm_util_base.h | 3 ++-
.../testing/selftests/kvm/lib/aarch64/vgic.c | 3 +--
tools/testing/selftests/kvm/lib/kvm_util.c | 23 ++++++++++++++-----
4 files changed, 25 insertions(+), 14 deletions(-)

diff --git a/tools/testing/selftests/kvm/aarch64/vgic_init.c b/tools/testing/selftests/kvm/aarch64/vgic_init.c
index 48b795eadafd..77ba8a160887 100644
--- a/tools/testing/selftests/kvm/aarch64/vgic_init.c
+++ b/tools/testing/selftests/kvm/aarch64/vgic_init.c
@@ -648,24 +648,24 @@ int test_kvm_device(uint32_t gic_dev_type)
v.vm = vm_create_default_with_vcpus(NR_VCPUS, 0, 0, guest_code, NULL);

/* try to create a non existing KVM device */
- ret = _kvm_create_device(v.vm, 0, true, &fd);
+ ret = __kvm_test_create_device(v.vm, 0);
TEST_ASSERT(ret && errno == ENODEV, "unsupported device");

/* trial mode */
- ret = _kvm_create_device(v.vm, gic_dev_type, true, &fd);
+ ret = __kvm_test_create_device(v.vm, gic_dev_type);
if (ret)
return ret;
v.gic_fd = kvm_create_device(v.vm, gic_dev_type);

- ret = _kvm_create_device(v.vm, gic_dev_type, false, &fd);
+ ret = __kvm_create_device(v.vm, gic_dev_type, &fd);
TEST_ASSERT(ret && errno == EEXIST, "create GIC device twice");

/* try to create the other gic_dev_type */
other = VGIC_DEV_IS_V2(gic_dev_type) ? KVM_DEV_TYPE_ARM_VGIC_V3
: KVM_DEV_TYPE_ARM_VGIC_V2;

- if (!_kvm_create_device(v.vm, other, true, &fd)) {
- ret = _kvm_create_device(v.vm, other, false, &fd);
+ if (!__kvm_test_create_device(v.vm, other)) {
+ ret = __kvm_test_create_device(v.vm, other);
TEST_ASSERT(ret && errno == EINVAL,
"create GIC device while other version exists");
}
diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h
index 6e1926abb248..8795f4624c2c 100644
--- a/tools/testing/selftests/kvm/include/kvm_util_base.h
+++ b/tools/testing/selftests/kvm/include/kvm_util_base.h
@@ -484,7 +484,8 @@ void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...);

int _kvm_device_check_attr(int dev_fd, uint32_t group, uint64_t attr);
int kvm_device_check_attr(int dev_fd, uint32_t group, uint64_t attr);
-int _kvm_create_device(struct kvm_vm *vm, uint64_t type, bool test, int *fd);
+int __kvm_test_create_device(struct kvm_vm *vm, uint64_t type);
+int __kvm_create_device(struct kvm_vm *vm, uint64_t type, int *fd);
int kvm_create_device(struct kvm_vm *vm, uint64_t type);
int _kvm_device_access(int dev_fd, uint32_t group, uint64_t attr,
void *val, bool write);
diff --git a/tools/testing/selftests/kvm/lib/aarch64/vgic.c b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
index c34f0f116f39..74b4bcaffcfa 100644
--- a/tools/testing/selftests/kvm/lib/aarch64/vgic.c
+++ b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
@@ -51,8 +51,7 @@ int vgic_v3_setup(struct kvm_vm *vm, unsigned int nr_vcpus, uint32_t nr_irqs,
nr_vcpus, nr_vcpus_created);

/* Distributor setup */
- if (_kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V3,
- false, &gic_fd) != 0)
+ if (__kvm_create_device(vm, KVM_DEV_TYPE_ARM_VGIC_V3, &gic_fd))
return -1;

kvm_device_access(gic_fd, KVM_DEV_ARM_VGIC_GRP_NR_IRQS,
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index cb2e42aa1c03..9c0122b0e393 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -1629,14 +1629,25 @@ int kvm_device_check_attr(int dev_fd, uint32_t group, uint64_t attr)
return ret;
}

-int _kvm_create_device(struct kvm_vm *vm, uint64_t type, bool test, int *fd)
+int __kvm_test_create_device(struct kvm_vm *vm, uint64_t type)
{
- struct kvm_create_device create_dev;
+ struct kvm_create_device create_dev = {
+ .type = type,
+ .flags = KVM_CREATE_DEVICE_TEST,
+ };
+
+ return __vm_ioctl(vm, KVM_CREATE_DEVICE, &create_dev);
+}
+
+int __kvm_create_device(struct kvm_vm *vm, uint64_t type, int *fd)
+{
+ struct kvm_create_device create_dev = {
+ .type = type,
+ .fd = -1,
+ .flags = 0,
+ };
int ret;

- create_dev.type = type;
- create_dev.fd = -1;
- create_dev.flags = test ? KVM_CREATE_DEVICE_TEST : 0;
ret = __vm_ioctl(vm, KVM_CREATE_DEVICE, &create_dev);
*fd = create_dev.fd;
return ret;
@@ -1646,7 +1657,7 @@ int kvm_create_device(struct kvm_vm *vm, uint64_t type)
{
int fd, ret;

- ret = _kvm_create_device(vm, type, false, &fd);
+ ret = __kvm_create_device(vm, type, &fd);

TEST_ASSERT(!ret, "KVM_CREATE_DEVICE IOCTL failed, rc: %i errno: %i", ret, errno);
return fd;
--
2.36.1.255.ge46751e96f-goog