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    SubjectRe: Realtime Preemption, 2.6.12, Beginners Guide?
    K.R. Foley wrote:
    > K.R. Foley wrote:
    >
    >> Karsten Wiese wrote:
    >>
    >>> Am Mittwoch, 13. Juli 2005 16:01 schrieb K.R. Foley:
    >>>
    >>>> Ingo Molnar wrote:
    >>>>
    >>>>> * Chuck Harding <charding@llnl.gov> wrote:
    >>>>>
    >>>>>
    >>>>>
    >>>>>>> CC [M] sound/oss/emu10k1/midi.o
    >>>>>>> sound/oss/emu10k1/midi.c:48: error: syntax error before
    >>>>>>> '__attribute__'
    >>>>>>> sound/oss/emu10k1/midi.c:48: error: syntax error before ')' token
    >>>>>>>
    >>>>>>> Here's the offending line:
    >>>>>>>
    >>>>>>> 48 static DEFINE_SPINLOCK(midi_spinlock __attribute((unused)));
    >>>>>>>
    >>>>>>> Lee
    >>>>>>>
    >>>>>>
    >>>>>> I got it to compile but it won't boot - it hangs right after the
    >>>>>> 'Uncompressing Linux... OK, booting the kernel' - I'm using .config
    >>>>>
    >>>>>
    >>>>>
    >>>>>> from 51-27 (attached)
    >>>>>
    >>>>>
    >>>>>
    >>>>>
    >>>>> and -51-27 worked just fine? I've uploaded -29 with the -28 io-apic
    >>>>> changes undone (will re-apply them once Karsten has figured out
    >>>>> what's wrong).
    >>>>>
    >>>>> Ingo
    >>>>
    >>>>
    >>>>
    >>>> I too had the same problem booting -51-28 on my older SMP system at
    >>>> home. -51-29 just booted fine.
    >>>>
    >>>
    >>> Have I corrected the other path of ioapic early initialization, which
    >>> had lacked
    >>> virtual-address setup before ioapic_data[ioapic] was to be filled in
    >>> -51-28?
    >>> Please test attached patch on top of -51-29 or later.
    >>> Also on Systems that liked -51-28.
    >>>
    >>> thanks, Karsten
    >>>
    >>>
    >> Karsten,
    >>
    >> Just booted on my 2.6 dual Xeon w/HT and thus far all is well. I am
    >> still building on the older SMP system that didn't like -51-28. Will
    >> report after I try booting that one.
    >>
    >> <snip>
    >>
    >
    > Just booted on my older SMP box that barfed on -51-28. It would appear
    > that the init problem is resolved.
    >

    DOH! All of the above is on -51-30 with Karsten's patch applied.

    --
    kr
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