number of CPUs and IPI panic

[Stephan Uphoff]

On Fri, 2004-11-12 at 09:19, Nik Azim Azam wrote:
> Win2K Advanced Server works just fine here.

The root cause seems to be a misunderstanding of the interrupt delivery
and buffering mechanism. The fix may take a few days since it probably
requires extensive changes to the IPI layer.

> --- "Ketrien I. Saihr-Kesenchedra"
> <ketrien at error404.nls.net> wrote:
> 
> > Josh Tolbert wrote:
> > 
> > >Win2K Advanced Server works just fine on these
> > boxes, no special patches needed. FreeBSD-4.x ran
> > just fine on my Revolution 6x6 (also 6x PII
> > OverDrive; you can see it at
> >
> http://www.puresimplicity.net/~hemi/Pics/Comps/ALR/).
> > If you
> > >want high-detail pics of a 6x6 motherboard, let me
> > know. I have a spare dead one that I looted some
> > parts from to revive my working one.
> > >
> > >I haven't tried FreeBSD-5.x on my 6x6, mainly cause
> > the thing is disassembled until I build a case for
> > it. Mine never had problems crashing under heavy
> > load with 4.x, though.
> > >  
> > >
> > Indeed, but there's one detail being overlooked;
> > You're dealing with a genuine ALR. What we have in
> > this instance is a 
> > Unisys Aquanta Hx/6. The Hx/6 is not identical to
> > the ALR, because 
> > Unisys can't leave good enough alone. (I had to deal
> > with a DS6, which 
> > is based on the Revolution 4-way.) I definitely
> > would not put stupid 
> > BIOS tweaks past it; in fact, I would very much
> > expect them.
> > As far as functionality; oh, yes, I can also confirm
> > that on 4.x they 
> > were fine. I had opportunity to test a DS6, though,
> > and it would -not- 
> > behave unless I told it I was Windows NT. The Unisys
> > part here may be a 
> > similar situation. In fact, comparing your dmesg, I
> > can say with some 
> > certainty that the Unisys part is not the same. For
> > example; there is no 
> > pcic0. (This still may be erroneous.) Not
> > remembering 4.x too well, the 
> > boot order also has me wondering, but that may just
> > be 4.x.
> > Somewhere around here I should have a bunch of notes
> > on the ALR 
> > implementation. Both of those seem off to me for
> > several reasons; I see 
> > two Orions detected when I'm fairly certain we
> > should detect a total of 
> > three (not including memory card.) ISTR the APIC
> > being a 24 pin, as 
> > well. I'll have to see if I can find what disk I
> > stuck them on.
> > 
> > -ksaihr
> > 
> 
> 
> 
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