| Message ID | 20231129072712.2667337-6-shahuang@redhat.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | KVM: selftests: aarch64: Introduce pmu_event_filter_test | expand |
Hi Shaoqin On 11/29/23 08:27, Shaoqin Huang wrote: > Add the invalid filter test to double check if the KVM_ARM_VCPU_PMU_V3_FILTER > will return the expected error. ... in which situations? filter beyond the 16b event space or incorrect action. > > Signed-off-by: Shaoqin Huang <shahuang@redhat.com> > --- > .../kvm/aarch64/pmu_event_filter_test.c | 36 +++++++++++++++++++ > 1 file changed, 36 insertions(+) > > diff --git a/tools/testing/selftests/kvm/aarch64/pmu_event_filter_test.c b/tools/testing/selftests/kvm/aarch64/pmu_event_filter_test.c > index 0e652fbdb37a..4c375417b194 100644 > --- a/tools/testing/selftests/kvm/aarch64/pmu_event_filter_test.c > +++ b/tools/testing/selftests/kvm/aarch64/pmu_event_filter_test.c > @@ -7,6 +7,7 @@ > * This test checks if the guest only see the limited pmu event that userspace > * sets, if the guest can use those events which user allow, and if the guest > * can't use those events which user deny. > + * It also checks that setting invalid filter ranges return the expected error. > * This test runs only when KVM_CAP_ARM_PMU_V3, KVM_ARM_VCPU_PMU_V3_FILTER > * is supported on the host. > */ > @@ -197,6 +198,39 @@ static void for_each_test(void) > run_test(t); > } > > +static void set_invalid_filter(struct vpmu_vm *vm, void *arg) > +{ > + struct kvm_pmu_event_filter invalid; > + struct kvm_device_attr attr = { > + .group = KVM_ARM_VCPU_PMU_V3_CTRL, > + .attr = KVM_ARM_VCPU_PMU_V3_FILTER, > + .addr = (uint64_t)&invalid, > + }; > + int ret = 0; > + > + /* The max event number is (1 << 16), set a range large than it. */ larger > + invalid = __DEFINE_FILTER(BIT(15), BIT(15)+1, 0); doc says must fit within the event space defined by the PMU architecture (10 bits on ARMv8.0, 16 bits from ARMv8.1 onwards). > + ret = __vcpu_ioctl(vm->vcpu, KVM_SET_DEVICE_ATTR, &attr); > + TEST_ASSERT(ret && errno == EINVAL, "Set Invalid filter range " > + "ret = %d, errno = %d (expected ret = -1, errno = EINVAL)", > + ret, errno); > + > + ret = 0; > + > + /* Set the Invalid action. */ > + invalid = __DEFINE_FILTER(0, 1, 3); > + ret = __vcpu_ioctl(vm->vcpu, KVM_SET_DEVICE_ATTR, &attr); > + TEST_ASSERT(ret && errno == EINVAL, "Set Invalid filter action " > + "ret = %d, errno = %d (expected ret = -1, errno = EINVAL)", > + ret, errno); > +} > + > +static void test_invalid_filter(void) > +{ > + vpmu_vm = __create_vpmu_vm(guest_code, set_invalid_filter, NULL); > + destroy_vpmu_vm(vpmu_vm); > +} > + > static bool kvm_supports_pmu_event_filter(void) > { > int r; > @@ -228,4 +262,6 @@ int main(void) > TEST_REQUIRE(host_pmu_supports_events()); > > for_each_test(); > + > + test_invalid_filter(); > } Eric
diff --git a/tools/testing/selftests/kvm/aarch64/pmu_event_filter_test.c b/tools/testing/selftests/kvm/aarch64/pmu_event_filter_test.c index 0e652fbdb37a..4c375417b194 100644 --- a/tools/testing/selftests/kvm/aarch64/pmu_event_filter_test.c +++ b/tools/testing/selftests/kvm/aarch64/pmu_event_filter_test.c @@ -7,6 +7,7 @@ * This test checks if the guest only see the limited pmu event that userspace * sets, if the guest can use those events which user allow, and if the guest * can't use those events which user deny. + * It also checks that setting invalid filter ranges return the expected error. * This test runs only when KVM_CAP_ARM_PMU_V3, KVM_ARM_VCPU_PMU_V3_FILTER * is supported on the host. */ @@ -197,6 +198,39 @@ static void for_each_test(void) run_test(t); } +static void set_invalid_filter(struct vpmu_vm *vm, void *arg) +{ + struct kvm_pmu_event_filter invalid; + struct kvm_device_attr attr = { + .group = KVM_ARM_VCPU_PMU_V3_CTRL, + .attr = KVM_ARM_VCPU_PMU_V3_FILTER, + .addr = (uint64_t)&invalid, + }; + int ret = 0; + + /* The max event number is (1 << 16), set a range large than it. */ + invalid = __DEFINE_FILTER(BIT(15), BIT(15)+1, 0); + ret = __vcpu_ioctl(vm->vcpu, KVM_SET_DEVICE_ATTR, &attr); + TEST_ASSERT(ret && errno == EINVAL, "Set Invalid filter range " + "ret = %d, errno = %d (expected ret = -1, errno = EINVAL)", + ret, errno); + + ret = 0; + + /* Set the Invalid action. */ + invalid = __DEFINE_FILTER(0, 1, 3); + ret = __vcpu_ioctl(vm->vcpu, KVM_SET_DEVICE_ATTR, &attr); + TEST_ASSERT(ret && errno == EINVAL, "Set Invalid filter action " + "ret = %d, errno = %d (expected ret = -1, errno = EINVAL)", + ret, errno); +} + +static void test_invalid_filter(void) +{ + vpmu_vm = __create_vpmu_vm(guest_code, set_invalid_filter, NULL); + destroy_vpmu_vm(vpmu_vm); +} + static bool kvm_supports_pmu_event_filter(void) { int r; @@ -228,4 +262,6 @@ int main(void) TEST_REQUIRE(host_pmu_supports_events()); for_each_test(); + + test_invalid_filter(); }
Add the invalid filter test to double check if the KVM_ARM_VCPU_PMU_V3_FILTER will return the expected error. Signed-off-by: Shaoqin Huang <shahuang@redhat.com> --- .../kvm/aarch64/pmu_event_filter_test.c | 36 +++++++++++++++++++ 1 file changed, 36 insertions(+)