SRMMU_PGDIR_SHIFT   41 arch/sparc/include/asm/pgtable_32.h #define PGDIR_SHIFT     	SRMMU_PGDIR_SHIFT
SRMMU_PGDIR_SHIFT   28 arch/sparc/include/asm/pgtsrmmu.h #define SRMMU_PGDIR_SIZE        (1UL << SRMMU_PGDIR_SHIFT)