From: "H. Peter Anvin" <hpa@transmeta.com>
To: Rogier Wolff <R.E.Wolff@BitWizard.nl>
Cc: "H. Peter Anvin" <hpa@zytor.com>, linux-kernel@vger.kernel.org
Subject: Re: APIC errors w/ 2.4.0-test11-pre2
Date: Fri, 10 Nov 2000 15:37:31 -0800 [thread overview]
Message-ID: <3A0C86BB.4C87A630@transmeta.com> (raw)
In-Reply-To: <200011102225.XAA04339@cave.bitwizard.nl>
Rogier Wolff wrote:
>
> > I have seen the same problem on the same motherboard. It appears to
> > be a motherboard bug that 2.4 exposes and 2.2 doesn't.
>
> This PRINT was added in 2.4.
>
> You're seeing noise on the apic lines. The APICs notice, but every now
> and then you may see a lockup due to this. (i.e. if the corruption
> does not trigger a parity error, because two bits flipped!)
>
What I was seeing, though, was that 2.4 would lock up with an NMI deadman
after a few days. 2.2 never did. Even on other hardware I see very high
NMI rates, but no lockups, using 2.4.
-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt
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prev parent reply other threads:[~2000-11-10 23:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-10 14:31 APIC errors w/ 2.4.0-test11-pre2 Bernhard Rosenkraenzer
2000-11-10 21:39 ` H. Peter Anvin
2000-11-10 22:25 ` Rogier Wolff
2000-11-10 23:37 ` H. Peter Anvin [this message]
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