xe_pt_populate_empty
xe_pt_populate_empty(xe_walk->tile, xe_walk->vm, xe_child);
void xe_pt_populate_empty(struct xe_tile *tile, struct xe_vm *vm,
xe_pt_populate_empty(tile, vm, vm->scratch_pt[id][i]);
xe_pt_populate_empty(tile, vm, vm->pt_root[id]);