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

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Date:	Fri, 21 Nov 2008 18:18:02 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	Joerg Roedel <joerg.roedel@....com>,
	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


* David Woodhouse <dwmw2@...radead.org> wrote:

> On Fri, 2008-11-21 at 17:57 +0100, Joerg Roedel wrote:
> > 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/?
> 
> I think it's better to start off with a generic version, and test it 
> on more than one architecture before feeding it upstream. That way, 
> you know you aren't going to have to go back to the drawing board 
> with it.

Joerg, i'd suggest to make the generic conceptual bits generic, and 
add an HAVE_DMA_DEBUG_SUPPORT Kconfig bool flag to every architecture 
that enables it. It needs active changes to every architecture that 
supports this facility.

	Ingo
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