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    SubjectRe: [patch] Real-Time Preemption, -RT-2.6.12-rc6-V0.7.48-00
    K.R. Foley wrote:
    > Ingo Molnar wrote:
    >
    >> * K.R. Foley <kr@cybsft.com> wrote:
    >>
    >>
    >>>> could you uncomment the IO_APIC_CACHE define in
    >>>> arch/i386/kernel/io_apic.c, and could you uncomment line 1109 in
    >>>> drivers/ide/ide-io.c - does this fix things? (in apic mode)
    >>
    >>
    >>
    >>> Couple of things: 1) I could not find IO_APIC_CACHE anywhere. I could
    >>> find IOAPIC_CACHE but the define was not commented in io_apic.c. Also
    >>> the BUG_ON at line 1109 in ide-io.c was not commented out either. So
    >>> I made the mental leap that you actually meant to comment these out
    >>> instead of uncomment them??? [...]
    >>
    >>
    >>
    >> yeah, sorry :-|
    >>
    >
    > OK so there really was no mental leap. It was more like a
    > trip,stumble,roll,grasp :-) I actually discovered the real meaning of
    > the above after commenting out only one of the above and failed boot.
    > Only then did it dawn on me what you were trying for. Hence the last
    > line of my email not being finished.
    >
    >>
    >>> [...] That works to get the system booted. Although I am getting many
    >>> soft lockups now, minutes after the boot. Log attached. [...]
    >>
    >>
    >>
    >> hm, do you get actual lockups, or only the messages about them? I.e.
    >> does the system work fine if you [the sounds of careful thinking to
    >> get the word right] disable CONFIG_DETECT_SOFTLOCKUP, or does it lock
    >> up silently?
    >

    Just had an opportunity to check this. Everything does indeed seem to be
    working OK with this disabled. No lock up messages, no perceived problems.

    >
    > There doesn't seem to be any actual lockups, just messages. I will try
    > disabling the above when I get home this evening. Can't get to the
    > system right now.
    >
    >>
    >>
    >>> [...] 2) In my infinite wisdom before :-) I failed to attach my
    >>> config as I should have done before. Also, commenting out
    >>
    >>
    >>
    >> this looks like a sentence worth finishing? :)
    >
    > Actually see my comment above about the "trip,stumble,roll,grasp" The
    > line above is the point at which I realized what was going on. :-D
    >
    >>
    >> Ingo
    >>
    >
    >


    --
    kr
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