IDT_OF
setidt(IDT_OF, pti ? &IDTVEC(ofl_pti) : &IDTVEC(ofl), SDT_SYSIGT,
case IDT_OF:
if (vector == IDT_BP || vector == IDT_OF) {
setidt(IDT_OF, &IDTVEC(ofl), SDT_SYS386IGT, SEL_UPL,