PG_FOR
npte |= PG_FOR | PG_FOW | PG_FOE;
pmap_changebit(pg, PG_FOR | PG_FOW | PG_FOE, ~0, cpu_id);
if (!(*pte & (PG_FOR | PG_FOE))) {
faultoff = PG_FOR | PG_FOW;
faultoff = PG_FOR;