_REGION3_SHIFT
#define _REGION3_INDEX (0x7ffUL << _REGION3_SHIFT)
#define _REGION3_SIZE (1UL << _REGION3_SHIFT)
#define PUD_SHIFT _REGION3_SHIFT
table += (address & _REGION3_INDEX) >> _REGION3_SHIFT;
rtte += (addr & _REGION3_INDEX) >> _REGION3_SHIFT;