[lkml]   [2005]   [Sep]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH 2.6.13] x86_64: Make trap_init() happen earlier - dropped
    On Thursday 08 September 2005 18:37, Tom Rini wrote:
    > It can be handy in some situations to have run trap_init() sooner than the
    > generic code does. In order to do this on x86_64 we need to add a custom
    > early_setup_per_cpu_areas() call as well.

    The patch is totally broken and causes crash even under light load
    (just found it after a lengthy binary search)

    > +void __init early_setup_per_cpu_areas(void)
    > +{
    > + static char cpu0[PERCPU_ENOUGH_ROOM] __cacheline_aligned
    > + __attribute__ ((aligned (SMP_CACHE_BYTES)));

    The original code does

    /* Copy section for each CPU (we discard the original) */
    size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
    if (size < PERCPU_ENOUGH_ROOM)

    perhaps end-start is larger than PERCPU_ENOUGH_ROOM ? (using defconfig)

    Dropped from my tree for now.


    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: 2005-09-09 16:20    [W:0.019 / U:34.464 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site