diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 1782cbcd2829545270d897cd4f911d95f54d0fa7..fcd41795b550f602fb08fc7502fb5f9faf63a86d 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -112,7 +112,12 @@ long kvm_arch_dev_ioctl(struct file *filp,
 
 int kvm_dev_ioctl_check_extension(long ext)
 {
-	return 0;
+	switch (ext) {
+	case KVM_CAP_USER_MEMORY:
+		return 1;
+	default:
+		return 0;
+	}
 }
 
 /* Section: vm related */