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    SubjectRe: [PATCH] - Increase MAX_APICS for large configs
    On Thu, Apr 17, 2008 at 4:07 AM, Ingo Molnar <mingo@elte.hu> wrote:
    >
    > * Jack Steiner <steiner@sgi.com> wrote:
    >
    > > Increase the maximum number of apics when running very large
    > > configurations. This patch has no affect on most systems.
    >
    > x86.git overnight random-qa testing found a boot crash and i bisected it
    > down to this patch. The config is:
    >
    > http://redhat.com/~mingo/misc/config-Thu_Apr_17_10_17_14_CEST_2008.bad
    >
    > the failure is attached below. (I needed the exact boot parameters
    > listed in that bootup log to see this failure.)
    >
    > it seems to be CONFIG_MAXSMP=y triggers the new more-apic-ids code and
    > that causes some breakage elsewhere. [btw., this again shows how useful
    > the CONFIG_MAXSMP debug feature is!]

    so this one and Mike's 4096 NR_CPUS cause the problem?

    2048 CPUs works.

    YH


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