SMP support problem - panic: APIC: Previous IPI is stuck

[Aykut KARA]

> > We are using FreeBSD 5.3R on our quad(4) cpu server. Our problem is, 
> > which I mentioned in subject line, "panic: APIC: Previous IPI is 
> > stuck". When server gives such an error, it stops responding ...
> > 
> > I have searched all mailing lists but I can not find a solution except 
> > disabling SMP support in kernel which can not handle the traffic. What 
> > can be done in this situation? I will be pleased for your advises...

> You sure you searched the mailing lists?  ;-)

> Stephan Uphoff produced a patch that might fix it and posted to current@
about it 2 weeks ago:
>
http://lists.freebsd.org/pipermail/freebsd-current/2004-November/043156.html

> Jon

Yes i have already read this but it says that:

"The patch is a proof of concept and therefore not optimized". 

How can i try such a patch on o working remote high priority server?
Furthermore, there is no information in the main FreeBSD site about this
patch. I just want to learn that is there any way that guarantees to fix
this error?

AyKuT