pmap_vac_me_user
pmap_vac_me_user(md, pa, pm, va);
pmap_vac_me_user(md, pa, (last_pmap = pv->pv_pmap), 0);
pmap_vac_me_user(md, pa, pm, va);
static void pmap_vac_me_user(struct vm_page_md *, paddr_t, pmap_t, vaddr_t);