linux-kernel - Re: [PATCH 0/10] DMA-API debugging facility

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Date:	Sat, 22 Nov 2008 10:29:04 +0100
From:	Joerg Roedel <joro@...tes.org>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	joerg.roedel@....com, netdev@...r.kernel.org, tglx@...utronix.de,
	mingo@...hat.com, linux-kernel@...r.kernel.org,
	iommu@...ts.linux-foundation.org
Subject: Re: [PATCH 0/10] DMA-API debugging facility

On Sat, Nov 22, 2008 at 12:27:39PM +0900, FUJITA Tomonori wrote:
> On Fri, 21 Nov 2008 17:26:00 +0100
> Joerg Roedel <joerg.roedel@....com> wrote:
> 
> > Hi,
> > 
> > this patchset introduces code to debug drivers usage of the DMA-API.
> > Tests with hardware IOMMUs have shown several bugs in drivers regarding
> > the usage of that API.
> > Problems were found especially in network card drivers.
> 
> Especially? Have you met dma similar bugs with storage (scsi, etc)
> drivers?

No. For me the code only triggered network card drivers. Namely the
ixgbe, tg3 and bnx2 driver.

> 
> > This way driver developers get an idea where the problem is in their
> > code.
> > 
> > Please review and send any objections or, if there are none, consider
> > for inclusion ;)
> 
> This should be architecture independent code. Except for that, it
> looks very useful.

Thanks,

Joerg
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