lkml.org 
[lkml]   [2005]   [Aug]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: APIC version and 8-bit APIC IDs
    Maciej W. Rozycki wrote:

    > You are unfortunately mistaken -- the spec is explicit about *local* APIC
    > IDs having to start at 0. There are at least two places in the spec that
    > refer to that.

    I see. Thanks for the clarification.

    > You can always assign 0, 16, 17, etc. to local APICs and then 1, 2, 3,
    > etc. for I/O APICs.

    Actually, that's what we did (I messed thinks up in my posting). I think
    that's an ugly configuration, though, and totally misleading in terms of
    system topology.

    > Frankly I don't know what the actual justification
    > behind the requirement is. Note that the ID of 0 need not necessarily
    > belong to the BSP.

    Starting both local APICs and IO-APICs at 0 isa working and
    aesthetically pleasing solution. We're pursuing that now.

    Thanks again, Martin

    --
    Martin Wilck Phone: +49 5251 8 15113
    Fujitsu Siemens Computers Fax: +49 5251 8 20409
    Heinz-Nixdorf-Ring 1 mailto:Martin.Wilck@Fujitsu-Siemens.com
    D-33106 Paderborn http://www.fujitsu-siemens.com/primergy
    -
    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: 2005-08-29 09:28    [W:0.049 / U:29.692 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site