linux-kernel - Re: dma-debug: check_for

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Message-ID: <4A356F0E.9020809@s5r6.in-berlin.de>
Date:	Sun, 14 Jun 2009 23:43:42 +0200
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Ben Dooks <ben-linux@...ff.org>
CC:	linux-kernel@...r.kernel.org, Joerg Roedel <joerg.roedel@....com>
Subject: Re: dma-debug: check_for_stack background?

Ben Dooks wrote:
> On Sun, Jun 14, 2009 at 08:56:29PM +0200, Stefan Richter wrote:
>> the DMA debug facility warns  
>> about mappings of on-stack memory.  What's the problem with that?
...
> I'm not sure if it is possible on all architectures, however the
> DMA mapping documentation prohibts the use of stack memory.

Ah, it has all been documented in plain sight for ages.  Thanks for the 
pointer.
-- 
Stefan Richter
-=====-==--= -==- -===-
http://arcgraph.de/sr/
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