829 static int vhost_vsock_set_features(struct vhost_vsock *vsock, u64 features)  in vhost_vsock_set_features()  argument
834 	if (features & ~VHOST_VSOCK_FEATURES)  in vhost_vsock_set_features()
838 	if ((features & (1 << VHOST_F_LOG_ALL)) &&  in vhost_vsock_set_features()
843 	if ((features & (1ULL << VIRTIO_F_ACCESS_PLATFORM))) {  in vhost_vsock_set_features()
848 	if (features & (1ULL << VIRTIO_VSOCK_F_SEQPACKET))  in vhost_vsock_set_features()
854 		vq->acked_features = features;  in vhost_vsock_set_features()
871 	u64 features;  in vhost_vsock_dev_ioctl()  local
888 		features = VHOST_VSOCK_FEATURES;  in vhost_vsock_dev_ioctl()
889 		if (copy_to_user(argp, &features, sizeof(features)))  in vhost_vsock_dev_ioctl()
893 		if (copy_from_user(&features, argp, sizeof(features)))  in vhost_vsock_dev_ioctl()
895 		return vhost_vsock_set_features(vsock, features);  in vhost_vsock_dev_ioctl()
897 		features = VHOST_VSOCK_BACKEND_FEATURES;  in vhost_vsock_dev_ioctl()
898 		if (copy_to_user(argp, &features, sizeof(features)))  in vhost_vsock_dev_ioctl()
902 		if (copy_from_user(&features, argp, sizeof(features)))  in vhost_vsock_dev_ioctl()
904 		if (features & ~VHOST_VSOCK_BACKEND_FEATURES)  in vhost_vsock_dev_ioctl()
906 		vhost_set_backend_features(&vsock->dev, features);  in vhost_vsock_dev_ioctl()