qxl_surface_evict
void qxl_surface_evict(struct qxl_device *qdev, struct qxl_bo *surf, bool freeing);
qxl_surface_evict(qdev, qobj, false);
qxl_surface_evict(qdev, bo, false);
qxl_surface_evict(qdev, qbo, new_mem ? true : false);