Subject: Re: Exploit in 2.6 kernels
From: Duncan Sands <baldrick@free.fr>
To: Dave Airlie <airlied@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
       Lennart Sorensen <lsorense@csclub.uwaterloo.ca>,
       Lars Marowsky-Bree <lmb@suse.de>,
       Helge Hafting <helge.hafting@aitel.hist.no>,
       John M Collins <jmc@xisl.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
In-Reply-To: <21d7e9970504150906e821374@mail.gmail.com>
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Date: Fri, 15 Apr 2005 18:19:28 +0200
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> I still don't think they would lose out by much.. I've just being
> trying to RE the ATI Mpeg2 IDCT/MC hardware, ATI know this, I know
> this, they are only wasting my time and my employers money (we still
> are going to buy their chips... no choice..) will they give out specs
> .. no .. why? cause of lawyers.. they use MPEG2 decoders for DVD
> decode and some lawyer told them this is a major secret despite the
> fact that everyone knows how to decode Mpeg2 and DVDs at this stage..
> 
> same story with VIA who persist on giving out a binary only blob for
> MPEG2 hardware despite the fact that it was RE'ed over two years ago..
> the secret is out...

When I was RE the ATI IDCT stuff a few years ago, someone at ATI told
me that the problem was that the company they licensed the IDCT stuff
from wouldn't let them give out any specs.  I may be remembering this
wrong since it was a long time ago...

Duncan.

PS: At some point I changed hardware, and didn't need the IDCT anymore.
I just tried to find my notes on it, but there only seems to be some
stuff about the tv tuner...

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