[lkml]   [2008]   [Mar]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH/RFC v2] introduce ARCH_CAN_UNALIGNED_ACCESS Kconfig symbol

    > I think you're semantically testing the wrong thing.
    > It's not if unaligned accesses are supported, it's if they are
    > efficient enough or not.
    > For example, sparc64 fully handles unaligned accesses but taking the
    > trap to fix it up is slow. So sparc64 "can" handle unaligned
    > accesses, but whether we want to set this symbol or not is another
    > matter.

    Yeah, good point. Should I rename it to HAVE_EFFICIENT_UNALIGNED_ACCESS
    or similar? Or have it defined as some sort of number so you can make
    actually make tradeoffs? Like Dave Woodhouse suggested at some point to
    have get_unaligned() take an argument that indicates the probability...

    [unhandled content-type:application/pgp-signature]
     \ /
      Last update: 2008-03-20 22:25    [W:0.020 / U:2.168 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site