PHB_IO_END        317 arch/powerpc/include/asm/book3s/64/pgtable.h #define  PHB_IO_END	(KERN_IO_START + FULL_IO_SIZE)
PHB_IO_END         54 arch/powerpc/include/asm/nohash/64/pgtable.h #define  PHB_IO_END	(KERN_IO_START + FULL_IO_SIZE)