_PAGE_MCD_4V
if (adi_state.enabled && (pte_val(pte) & _PAGE_MCD_4V))
if (adi_state.enabled && (pte_val(oldpte) & _PAGE_MCD_4V))
pte_val(pte) |= _PAGE_MCD_4V;
pte_val(pte) &= ~_PAGE_MCD_4V;
prot |= _PAGE_MCD_4V;