From: Muli Ben-Yehuda <muli@il.ibm.com>
To: Stephen Hemminger <shemminger@osdl.org>
Cc: Jeff Garzik <jeff@garzik.org>,
"Amit S. Kale" <amitkale@netxen.com>,
netdev@vger.kernel.org, brazilnut@us.ibm.com,
netxenproj@linsyssoft.com, rob@netxen.com, romieu@fr.zoreil.com,
sanjeev@netxen.com, wendyx@us.ibm.com
Subject: Re: network devices don't handle pci_dma_mapping_error()'s
Date: Tue, 5 Dec 2006 09:00:45 +0200 [thread overview]
Message-ID: <20061205070045.GE3619@rhun.ibm.com> (raw)
In-Reply-To: <20061204103949.3d05b1ff@freekitty>
On Mon, Dec 04, 2006 at 10:39:49AM -0800, Stephen Hemminger wrote:
> I notice that no current network driver handles dma mapping errors.
> Might that be part of the problem. On i386, this never happens, and
> it would be rare on most others.
IOMMUs are already available on x86-64 and are going to get widespread
with the the introduction of IOMMUs from Intel and AMD. Might as well
fix it now...
How about CONFIG_DEBUG_DMA_API that does book-keeping and yells if a
driver is mis-using the DMA API?
Cheers,
Muli
next prev parent reply other threads:[~2006-12-05 7:00 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-01 13:40 [PATCH 2/3] NetXen: 64-bit memory fixes Amit S. Kale
2006-12-01 18:56 ` Stephen Hemminger
2006-12-02 5:32 ` Jeff Garzik
2006-12-04 18:39 ` network devices don't handle pci_dma_mapping_error()'s Stephen Hemminger
2006-12-05 7:00 ` Muli Ben-Yehuda [this message]
2006-12-06 18:16 ` Stephen Hemminger
2006-12-06 19:33 ` Muli Ben-Yehuda
2006-12-07 6:18 ` Amit S. Kale
2006-12-07 13:04 ` Muli Ben-Yehuda
2006-12-07 0:54 ` David Miller
2006-12-07 0:58 ` Stephen Hemminger
2006-12-07 1:13 ` David Miller
2006-12-07 2:18 ` Rick Jones
2006-12-07 2:31 ` David Miller
2006-12-07 6:25 ` Amit S. Kale
2006-12-07 6:46 ` Stephen Hemminger
2006-12-07 6:55 ` Amit S. Kale
2006-12-07 7:24 ` David Miller
2006-12-07 20:07 ` Stephen Hemminger
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