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

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Message-ID: <20080509195149.GA4985@martell.zuzino.mipt.ru>
Date:	Fri, 9 May 2008 23:51:49 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Jay Cliburn <jacliburn@...lsouth.net>
Cc:	Luca Tettamanti <kronos.it@...il.com>,
	Chris Snook <csnook@...hat.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)

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

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