PG_NX
e & PG_NX ? 'X' : '-', /* reversed */
inherited & PG_NX ? 'X' : '-'); /* reversed */
e ^= PG_NX;
PG_M | PG_V | PG_NX;
PG_M | PG_V | PG_NX;
PG_M | PG_V | PG_NX;
PG_M | PG_V | PG_NX;
md_prot |= PG_NX;
npte |= PG_NX;
nx = PG_NX;
PDE(kpm, pdei(va)) = pte | PG_NX;
PDE(kpm, pdei(va)) = pte | PG_NX;