PTE_WIMGE_SHIFT    49 arch/powerpc/include/asm/nohash/32/pte-fsl-booke.h #define PTE_WIMGE_SHIFT (6)
PTE_WIMGE_SHIFT    66 arch/powerpc/include/asm/nohash/pte-book3e.h #define PTE_WIMGE_SHIFT (19)