AMR_BITS_PER_PKEY   26 arch/powerpc/mm/book3s64/pkeys.c #define AMR_BITS_PER_PKEY 2
AMR_BITS_PER_PKEY   36 tools/testing/selftests/powerpc/ptrace/core-pkey.c #define AMR_BITS_PER_PKEY 2
AMR_BITS_PER_PKEY   27 tools/testing/selftests/powerpc/ptrace/ptrace-pkey.c #define AMR_BITS_PER_PKEY 2