#define pgd_clear(pgdp) do { } while (0)
#define set_pgd(pgd,pgdp) do { } while (0)
-#define page_pte_prot(page,prot) mk_pte(page, prot)
-#define page_pte(page) mk_pte(page, __pgprot(0))
-
/* to find an entry in a page-table-directory */
#define pgd_index(addr) ((addr) >> PGDIR_SHIFT)