PV_KENTER
if (pve->pv_va & PV_KENTER) {
if (!(pve->pv_va & PV_KENTER)) {
if (!(pve->pv_va & PV_KENTER)) {
if (pve->pv_va & PV_KENTER)
pmap_pv_enter(pg, pve, pmap_kernel(), va, NULL, PV_KENTER);
if (pve->pv_va & PV_KENTER) {
if (pve->pv_va & PV_KENTER) {
if (!(pve->pv_va & PV_KENTER) && pm != ppm) {
pmap_enter_pv(pmap, va, pa, mdpg, &npte, PV_KENTER);
#define PV_KENTER __BIT(0)
#define PV_ISKENTER_P(pv) (((pv->pv_va) & PV_KENTER) != 0)