[RFC v6 24/62] powerpc: map vma key-protection bits to pte key bits.

map the pkey bits in the pte from the key protection bits of the vma. The pte bits used for pkey are 3,4,5,6 and 57. The first four bits are the same four bits that were freed up initially in this patch series. remember? :-) Without those four bits this patch would'nt be possible.

[RFC v6 24/62] powerpc: map vma key-protection bits to pte key bits.

map the pkey bits in the pte from the key protection bits of the vma. The pte bits used for pkey are 3,4,5,6 and 57. The first four bits are the same four bits that were freed up initially in this patch series. remember? :-) Without those four bits this patch would'nt be possible.