VIRTIO_F_VERSION_1
if (features & (VIRTIO_NET_F_MRG_RXBUF | VIRTIO_F_VERSION_1)) {
guest_features |= VIRTIO_F_VERSION_1;
if ((negotiated & VIRTIO_F_VERSION_1) == 0) {
driver_features |= VIRTIO_F_VERSION_1;
if (device_features & VIRTIO_F_VERSION_1) {
if (saved_driver_features & VIRTIO_F_VERSION_1) {
if (device_features & VIRTIO_F_VERSION_1) {
if (negotiated & VIRTIO_F_VERSION_1) {