PTE_RPN_SHIFT      32 arch/powerpc/include/asm/book3s/32/pgtable.h #define PTE_RPN_SHIFT	(PAGE_SHIFT)
PTE_RPN_SHIFT     142 arch/powerpc/include/asm/nohash/32/pgtable.h #define PTE_RPN_SHIFT	(PAGE_SHIFT)
PTE_RPN_SHIFT      64 arch/powerpc/include/asm/nohash/pte-book3e.h #define	PTE_RPN_SHIFT	(24)