netdev - Re: 2.6.20->2.6.21 - networking dies after random time

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Date:	Mon, 06 Aug 2007 13:43:48 -0400
From:	Chuck Ebbert <cebbert@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Marcin Ślusarz <marcin.slusarz@...il.com>,
	Jarek Poplawski <jarkao2@...pl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jean-Baptiste Vignaud <vignaud@...dmail.fr>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	shemminger <shemminger@...ux-foundation.org>,
	linux-net <linux-net@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: 2.6.20->2.6.21 - networking dies after random time

On 08/06/2007 03:03 AM, Ingo Molnar wrote:
> 
> But, since level types don't need this retriggers too much I think
> this "don't mask interrupts by default" idea should be rethinked:
> is there enough gain to risk such hard to diagnose errors?
>   
> 

I reverted those masking changes in Fedora and the baffling problem
with 3Com 3C905 network adapters went away.

Before, they would print:

eth0: transmit timed out, tx_status 00 status e601.
  diagnostics: net 0ccc media 8880 dma 0000003a fifo 0000
eth0: Interrupt posted but not delivered -- IRQ blocked by another device?
  Flags; bus-master 1, dirty 295757(13) current 295757(13)
  Transmit list 00000000 vs. f7150a20.
  0: @f7150200  length 80000070 status 0c010070
  1: @f71502a0  length 80000070 status 0c010070
  2: @f7150340  length 8000005c status 0c01005c

Now they just work, apparently...

So why not just revert the change?

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