pmap_pte_exists
pte = pmap_pte_exists(kernel_pmap, va, 3, __func__);
pte = pmap_pte_exists(kernel_pmap, va, 3, NULL);
pte = pmap_pte_exists(pmap, va, 2, __func__);
pte = pmap_pte_exists(pmap, pv->pv_va, 3, __func__);
pte = pmap_pte_exists(pmap, pv->pv_va, 2, __func__);
pte = pmap_pte_exists(pmap, pv->pv_va, 3, __func__);
pte = pmap_pte_exists(pmap, pv->pv_va, 2, __func__);
pte = pmap_pte_exists(pmap, va, 2, __func__);
pte = pmap_pte_exists(pmap, pv->pv_va, 3, __func__);
pte = pmap_pte_exists(pmap, va, 2, __func__);
pte = pmap_pte_exists(pmap, pv->pv_va, 3, __func__);