linux-kernel - Re: atl1 64-bit => 32-bit DMA borkage (reproducible, bisected)

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Message-ID: <20080509200715.GA5040@martell.zuzino.mipt.ru>
Date:	Sat, 10 May 2008 00:07:15 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Chris Snook <csnook@...hat.com>
Cc:	Jay Cliburn <jacliburn@...lsouth.net>,
	Luca Tettamanti <kronos.it@...il.com>,
	Jeff Garzik <jeff@...zik.org>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	Christoph Lameter <clameter@....com>, torvalds@...l.org
Subject: Re: atl1 64-bit => 32-bit DMA borkage (reproducible, bisected)

On Fri, May 09, 2008 at 02:56:21PM -0400, Chris Snook wrote:
> Alexey Dobriyan wrote:
>> Hmmm, there was a wonderful oops on interface stop here when the other end
>> of atl1 cable was physically unplugged (but there was traffic before):
>> 	atl1_down
>> 	atl1_clean_rx_ring
>> 	swiotlb_unmap_single
>> 	swiotlb_unmap_single_attrs
>> 	memcpy_c
>
> Intel chip, or AMD?

Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz
Asus P5B-E motherboard.

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