linux-kernel - Re: Closed source userspace graphics drivers with an open source kernel component

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Message-ID: <20100714132434.GC3103@ucw.cz>
Date:	Wed, 14 Jul 2010 15:24:34 +0200
From:	Pavel Machek <pavel@....cz>
To:	Piotr Gluszenia Slawinski <curious@...190.internetdsl.tpnet.pl>
Cc:	Dave Airlie <airlied@...hat.com>,
	Timothy Meade <zt.tmzt@...il.com>,
	linux-arm-msm@...r.kernel.org,
	Saravana Kannan <skannan@...eaurora.org>,
	LKML <linux-kernel@...r.kernel.org>,
	dri-devel <dri-devel@...ts.freedesktop.org>
Subject: Re: Closed source userspace graphics drivers with an open source
 kernel component

Hi!

> >There is no point supporting companies that give you a little bit of
> >information in exchange they want the support that being in a mainline
> >kernel gives. Its an unfair exchange of knowledge and time, and if they
> >claim they have to make a profit then its even more unfair.
> 
> also, they seem to do it quite wrong way. i.e. much simpler would be
> to just implement regular, open driver , and implement additional
> crypto
> mechanism in chipset itself, allowing to use simple userspace program
> sending certified keys allowing GPU to operate.

What is going on there? Does msm actually use crypto to prevent you
from use hardware you bought?

Are the keys device-specific? What prevents me from
reverse-engineering their binary and publishing them?	
						                     Pavel

-- 
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