psb_mmu_mask_pte
pd->invalid_pde = psb_mmu_mask_pte(page_to_pfn(pd->dummy_pt),
pd->invalid_pte = psb_mmu_mask_pte(page_to_pfn(pd->dummy_page),
pte = psb_mmu_mask_pte(start_pfn++, type);
pte = psb_mmu_mask_pte(page_to_pfn(*pages++),