Lost interrupts on SMP systems

John Baldwin jhb at FreeBSD.org
Wed Jan 12 11:31:56 PST 2005

On Wednesday 12 January 2005 02:12 am, Peter Trifonov wrote:
> Hello John,
> > > Things became even worse with both patches. Now doing normal (not
> > > flood) ping over  EITHER xl1 OR xl2 (they share IRQ11)  causes the
> > > corresponding interface to say "watchdog timeout". Essentially, xl1
> > > and xl2 do not work at all now.
> > >
> > > mptable still reports the same stuff as it was on the original
> > > (unpatched) kernel
> >
> > (http://lists.freebsd.org/pipermail/freebsd-smp/2005-January/000700.ht
> >
> > > ml)
> >
> > Ok, can you get me the dmesg from a boot -v with both patches still?
> It can be found here:
> http://dcn.infos.ru/~bugman/bootlog.txt
> I have also put there output of mptable.
> At a first glance, there are many strange things (e.g. a lot of failures at
> various places) in this log
> file, but I don't know which are relevant to the problem :-).

Unfortunately, it's missing the earliest messages.  I'm especially curious if 
your machine claims to have an ELCR, which would be output to a serial 
console very early on.  I'll commit the current workaround for your mptable 
and work up a patch to use the ELCR if it exists for ISA busses, not just 
EISA, maybe that will help.

John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org

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