H_PTE_FRAG_SIZE_SHIFT   54 arch/powerpc/include/asm/book3s/64/hash-4k.h #define H_PTE_FRAG_SIZE_SHIFT  (H_PTE_INDEX_SIZE + 3)
H_PTE_FRAG_SIZE_SHIFT   59 arch/powerpc/include/asm/book3s/64/hash-64k.h #define H_PTE_FRAG_SIZE_SHIFT  (H_PTE_INDEX_SIZE + 3 + 1)