Add the invalid filter test which sets the filter beyond the event
space and sets the invalid action to double check if the
KVM_ARM_VCPU_PMU_V3_FILTER will return the expected error.
Reviewed-by: Raghavendra Rao Ananta <rananta@xxxxxxxxxx>
Reviewed-by: Eric Auger <eric.auger@xxxxxxxxxx>
Signed-off-by: Shaoqin Huang <shahuang@xxxxxxxxxx>
---
.../kvm/aarch64/pmu_event_filter_test.c | 38 +++++++++++++++++++
1 file changed, 38 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 308b8677e08e..1abbe6d8deb2 100644
--- a/tools/testing/selftests/kvm/aarch64/pmu_event_filter_test.c
+++ b/tools/testing/selftests/kvm/aarch64/pmu_event_filter_test.c
@@ -8,6 +8,7 @@
* 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.
*/
@@ -31,6 +32,7 @@ struct vpmu_vm {
static struct vpmu_vm vpmu_vm;
+#define KVM_PMU_EVENT_INVALID 3
#define FILTER_NR 10
struct test_desc {
@@ -181,6 +183,40 @@ static void destroy_vpmu_vm(void)
kvm_vm_free(vpmu_vm.vm);
}
+static void test_invalid_filter(void)
+{
+ struct kvm_pmu_event_filter invalid;
+ int ret;
+
+ pr_info("Test: test_invalid_filter\n");
+
+ memset(&vpmu_vm, 0, sizeof(vpmu_vm));
+
+ vpmu_vm.vm = vm_create(1);
+ vpmu_vm.vcpu = vm_vcpu_add_with_vpmu(vpmu_vm.vm, 0, guest_code);
+ vpmu_vm.gic_fd = vgic_v3_setup(vpmu_vm.vm, 1, 64);
+ __TEST_REQUIRE(vpmu_vm.gic_fd >= 0,
+ "Failed to create vgic-v3, skipping");
+
+ /* The max event number is (1 << 16), set a range largeer than it. */
+ invalid = __DEFINE_FILTER(BIT(15), BIT(15) + 1, KVM_PMU_EVENT_ALLOW);
+ ret = __kvm_device_attr_set(vpmu_vm.vcpu->fd, KVM_ARM_VCPU_PMU_V3_CTRL,
+ KVM_ARM_VCPU_PMU_V3_FILTER, &invalid);
+ TEST_ASSERT(ret && errno == EINVAL, "Set Invalid filter range "
+ "ret = %d, errno = %d (expected ret = -1, errno = EINVAL)",
+ ret, errno);
+
+ /* Set the Invalid action. */
+ invalid = __DEFINE_FILTER(0, 1, KVM_PMU_EVENT_INVALID);
+ ret = __kvm_device_attr_set(vpmu_vm.vcpu->fd, KVM_ARM_VCPU_PMU_V3_CTRL,
+ KVM_ARM_VCPU_PMU_V3_FILTER, &invalid);
+ TEST_ASSERT(ret && errno == EINVAL, "Set Invalid filter action "
+ "ret = %d, errno = %d (expected ret = -1, errno = EINVAL)",
+ ret, errno);
+
+ destroy_vpmu_vm();
+}
+
static void run_test(struct test_desc *t)
{
pr_info("Test: %s\n", t->name);
@@ -311,4 +347,6 @@ int main(void)
TEST_REQUIRE(kvm_pmu_support_events());
run_tests();
+
+ test_invalid_filter();
}
--
2.40.1
