pmap_vp_find
pt_entry_t pte = pmap_vp_find(fpm, fva);
static inline pt_entry_t pmap_vp_find(pmap_t, vaddr_t);
pte = pmap_vp_find(pm, pve->pv_va & PV_VAMASK);
pte = pmap_vp_find(pmap, va);
pte = pmap_vp_find(pmap, va);
pte |= pmap_vp_find(pve->pv_pmap, pva);