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SubjectRe: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U6
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On Tue, 2004-10-19 at 17:23, Rui Nuno Capela wrote:
> Ingo Molnar wrote:
> >
> >> i have released the -U6 Real-Time Preemption patch:
> >>
> >> http://redhat.com/~mingo/realtime-preempt/realtime-preempt-2.6.9-rc4-mm1-U6
> >
>
> I'm experiencing terrible kernel panics at a very early bootstrap stage
> while testing the U5 and U6 latest patch(es) on my laptop (P4/UP) --
> (Ingo: this is about the very same trouble I've reported while pre-testing
> U6).
>
> Sorry that I can't show any trace dumps; only a hard-screenshot (with
> digital camera?) would be possible but rather incomplete. The serial
> console hack is not an option--these "modern" laptops doesn't come with
> serial ports anymore, and netconsole is a no-op at a so early point of the
> boot process. Or so I believe.
>
> OK. After some incremental configurations, I've isolated that those
> oops(es) only occurs if PREEMPT_TIMING and/or LATENCY_TRACE areset (Y). My
> first suspect was that newest RWSEM_DEADLOCK_DETECT, but it wasn't the
> case.

Same here on al DELL P4/UP.

tglx



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