lkml.org 
[lkml]   [2003]   [Sep]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[PATCH] Fix Athlon MCA
    Hi,
    on boot I'm seeing a lot of messages like this:

    MCE: The hardware reports a non fatal, correctable incident occurred on CPU 0.
    Bank 0: d47fa0000000bfee

    This messages go away if I revert cset 1.1119.9.1. AFAIK you were trying
    to decrease the logging level. After reading IA32 Architecture Software
    Developers Manual, vol3 - chapter 14.5 "Machine-Check Initialization" I
    think that the right way to do it is this:

    --- linux-2.6/arch/i386/kernel/cpu/mcheck/k7.c~ Sat Aug 9 06:37:27 2003
    +++ linux-2.6/arch/i386/kernel/cpu/mcheck/k7.c Sun Sep 21 00:36:39 2003
    @@ -81,8 +81,9 @@
    wrmsr (MSR_IA32_MCG_CTL, 0xffffffff, 0xffffffff);
    nr_mce_banks = l & 0xff;

    - for (i=1; i<nr_mce_banks; i++) {
    - wrmsr (MSR_IA32_MC0_CTL+4*i, 0xffffffff, 0xffffffff);
    + for (i=0; i<nr_mce_banks; i++) {
    + if (i)
    + wrmsr (MSR_IA32_MC0_CTL+4*i, 0xffffffff, 0xffffffff);
    wrmsr (MSR_IA32_MC0_STATUS+4*i, 0x0, 0x0);
    }

    We really want to clean all MC*_STATUS. I'm currently running linux 2.6.0-t5
    + this patch and I don't see the MCE messages on boot anymore.

    Luca
    --
    Reply-To: kronos@kronoz.cjb.net
    Home: http://kronoz.cjb.net
    "L'abilita` politica e` l'abilita` di prevedere quello che
    accadra` domani, la prossima settimana, il prossimo mese e
    l'anno prossimo. E di essere cosi` abili, piu` tardi,
    da spiegare perche' non e` accaduto."
    -
    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: 2005-03-22 13:48    [W:3.117 / U:0.184 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site