KVM: s390: selftests: Add has device attr check to uc_attr_mem_limit selftest

Fixup the uc_attr_mem_limit test case to also cover the
KVM_HAS_DEVICE_ATTR ioctl.

Signed-off-by: Christoph Schlameuss <[email protected]>
Tested-by: Hariharan Mari <[email protected]>
Reviewed-by: Claudio Imbrenda <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Message-ID: <[email protected]>
Signed-off-by: Claudio Imbrenda <[email protected]>

Author: schlac

tools/testing/selftests/kvm/s390x/ucontrol_test.c

@@ -210,10 +210,13 @@ TEST_F(uc_kvm, uc_attr_mem_limit)
 	struct kvm_device_attr attr = {
 		.group = KVM_S390_VM_MEM_CTRL,
 		.attr = KVM_S390_VM_MEM_LIMIT_SIZE,
-		.addr = (unsigned long)&limit,
+		.addr = (u64)&limit,
 	};
 	int rc;
 
+	rc = ioctl(self->vm_fd, KVM_HAS_DEVICE_ATTR, &attr);
+	EXPECT_EQ(0, rc);
+
 	rc = ioctl(self->vm_fd, KVM_GET_DEVICE_ATTR, &attr);
 	EXPECT_EQ(0, rc);
 	EXPECT_EQ(~0UL, limit);