qxl_bo_vmap_locked
ret = qxl_bo_vmap_locked(bo, &surface_map);
ret = qxl_bo_vmap_locked(clips_bo, &map);
r = qxl_bo_vmap_locked(bo, map);
ret = qxl_bo_vmap_locked(bo, &bo_map);
int qxl_bo_vmap_locked(struct qxl_bo *bo, struct iosys_map *map);
ret = qxl_bo_vmap_locked(bo, map);