virtio_gpu_shared_info
virtio_gpu_shared_info* shared_info;
virtio_gpu_shared_info& sharedInfo = *info->sharedInfo;
virtio_gpu_shared_info* sharedInfo;
size_t sharedSize = (sizeof(virtio_gpu_shared_info) + 7) & ~7;
memset(info->sharedInfo, 0, sizeof(virtio_gpu_shared_info));
virtio_gpu_shared_info& sharedInfo = *info->sharedInfo;