pnv_tce
*(pnv_tce(tbl, false, idx, true)) = cpu_to_be64(newtce);
ptce = pnv_tce(tbl, false, idx, false);
ptce = pnv_tce(tbl, false, idx, true);
return pnv_tce(tbl, true, index - tbl->it_offset, alloc);
__be64 *ptce = pnv_tce(tbl, false, idx, false);
__be64 *ptce = pnv_tce(tbl, false, index - tbl->it_offset, false);