Re: 2.4.20-rc2-xfs lockups

From: Mike Eldridge (diz@cafes.net)
Date: Thu Nov 21 2002 - 19:53:55 EST


On Fri, Nov 22, 2002 at 12:38:25AM +0000, Alan Cox wrote:
> On Thu, 2002-11-21 at 23:26, Mike Eldridge wrote:
> > On Thu, Nov 21, 2002 at 03:31:22PM -0600, Mike Eldridge wrote:
> > > i recently replaced a pII-350 with a pair of pIII-500s in a tyan
> > > S1836-DLUAN-GX board (440GX dual slot 1). i'm now getting loads of NMI
> > > interrupts for unknown reasons (reasons 2c and 3c).
> >
> > after more googling, i've found several pieces of information that seem
> > to suggest interrupt routing on 440GX-based motherboards is busted.
> >
> > can anyone confirm this? will booting with 'noapic' fix this problem?
> > am i doomed to run a UP kernel?
>
> It varies. Unfortunately Intel won't tell us how to sort this mess out.

hrm :/

ironically, i've got another box here (440GX dual pIII-500) running
linux-2.2.20 with apic enabled that doesn't have this problem.
interestingly, the NMI line from /proc/interrupts only lists counts for
CPU0, not for CPU1. and it's sitting comfortably at 0.

running with 'noapic' on the troublesome machine still produces NMIs and
random hangs.

-mike

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