linux-kernel - AMP linux and GPU/HDMI controller sharing

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Date:	Sun, 29 Sep 2013 15:39:01 +0530
From:	Mj Embd <mj.embd@...il.com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: AMP linux and GPU/HDMI controller sharing

Hi,

I have got a client request to support on their board 2 instances of
linux(Ubuntu) running as an AMP.
The board has 2 ARM cores and a GPU. The LED monitor which connects to
the board is using HDMI.

Two cores can communicate via a IPI handshake.
So release and acquire of the GPU can be done cooperatively.

My problem is that, I have done partitioning of other resources but
not sure how to share the GPU. What I have to do is save the buffers
associated with current GPU owner in memory and restore later. I dont
know much about GPU programming and am looking for pointers /any help
which is possible.

Also the solution I have to create has to be GPU agnostic.

Please help me out.
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