[lkml]   [2004]   [Jan]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [RFC][PATCH] linux-2.6.2-rc2_vsyscall-gtod_B1.patch
    Eric W. Biederman wrote:
    > With the x86-64 optimized vsyscall the syscall number does
    > not need to be placed into a register, because you have used
    > the proper entry point. For any syscall worth tuning in
    > user space I suspect that level of optimization would be
    > beneficial. A fast call path that does not waste a register.

    The cost of loading a constant into a register is _much_ lower than
    the cost of indirect jumps which we have been discussing.

    -- Jamie
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 14:00    [W:0.019 / U:20.076 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site