lkml.org 
[lkml]   [2006]   [Jul]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: [RFC PATCH 28/33] Add Xen grant table support
    Date
    > I object to these uses of (synch_)cmpxchg on a uint16_t in common  
    > code.
    > Many architectures, including PowerPC, do not support 2-byte atomic
    > operations, but this code is common to all Xen architectures.

    RMW operations you mean, I suppose. On PowerPC, all (naturally
    aligned) halfword operations are atomic; there do not exist any
    RMW operations; but word and doubleword atomic RMW operations
    can be emulated.

    Boils down to the same thing of course, but it isn't the same ;-)


    Segher

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2006-07-25 21:11    [W:0.020 / U:0.968 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site