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

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Message-ID: <20081121165722.GD1386@amd.com>
Date:	Fri, 21 Nov 2008 17:57:22 +0100
From:	Joerg Roedel <joerg.roedel@....com>
To:	David Woodhouse <dwmw2@...radead.org>
CC:	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>, netdev@...r.kernel.org,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/10] DMA-API debugging facility

On Fri, Nov 21, 2008 at 04:54:52PM +0000, David Woodhouse wrote:
> On Fri, 2008-11-21 at 17:26 +0100, Joerg Roedel wrote:
> > 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.
> 
> This is really useful -- but surely it shouldn't be x86-specific?
> 
> All the code except the hooks in the architecture's dma_map_single() et
> al functions could be generic, couldn't it?

Yes, in principle we could move most of it to generic code. There is
nothing architecture specific in it.
Anybody who prefers this to be arch/x86 before moving it to lib/?

Joerg

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