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From: Manfred Spraul <manfred@colorfullife.com>
To: Dave Jones <davej@codemonkey.org.uk>
Cc: linux-kernel@vger.kernel.org,
	Jan Kasprzak <kas@informatics.muni.cz>,
	Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: AMD 768 erratum 10 (solved: AMD 760MPX DMA lockup)
Date: Thu, 26 Sep 2002 18:08:13 +0200	[thread overview]
Message-ID: <3D9330ED.4080105@colorfullife.com> (raw)

The errata is not PS/2 mouse specific:
it says that the io apic doesn't implement masking interrupts correctly.

Linux uses masking aggressively - disable_irq() is implemented by 
masking the interrupt in the io apic. I'm surprised that this doesn't 
cause frequent problems. Perhaps the problem only occurs if an invalid 
cpu id is written into the target register, as done by Netware?

Is someone around with a ne2k-pci card and a AMD-760MPX based system?

Regarding Jan's problem: I'm not sure if his problems are related to 
this errata. It says that using a PS/2 mouse instead of a serial mouse 
with Novell Netward avoids the hang during shutdown, probably because 
then netware doesn't mask the irq.

--
	Manfred


             reply	other threads:[~2002-09-26 16:03 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-09-26 16:08 Manfred Spraul [this message]
2002-09-27  6:46 ` Jan Kasprzak
2002-09-30 21:47   ` Maxwell Spangler
  -- strict thread matches above, loose matches on Subject: below --
2002-09-27 14:24 Bruno A. Crespo
2002-09-25 13:24 Jan Kasprzak
2002-09-26 15:08 ` Alan Cox
2002-09-26 15:34   ` Dave Jones
2002-09-26 16:51     ` Alan Cox

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