TWOLEVEL_PGDIR_SHIFT  155 include/asm-frv/pgtable.h #define BOOT_USER_PGD_PTRS	(__PAGE_OFFSET >> TWOLEVEL_PGDIR_SHIFT)
TWOLEVEL_PGDIR_SHIFT   74 include/asm-mn10300/pgtable.h #define BOOT_USER_PGD_PTRS	(__PAGE_OFFSET >> TWOLEVEL_PGDIR_SHIFT)