• Benjamin Herrenschmidt's avatar
    powerpc/mm: Update bits used to skip hash_page · 398a719d
    Benjamin Herrenschmidt authored
    We test a number of bits from DSISR/SRR1 before deciding
    to call hash_page(). If any of these is set, we go directly
    to do_page_fault() as the bit indicate a fault that needs
    to be handled there (no hashing needed).
    
    This updates the current open-coded masks to use the new
    DSISR definitions.
    
    This *does* change the masks actually used in two ways:
    
     - We used to test various bits that were defined as "always 0"
    in the architecture and could be repurposed for something
    else. From now on, we just ignore such bits.
    
     - We were missing some new bits defined on P9
    Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    398a719d
exceptions-64s.S 47.7 KB