linux-kernel - Re: [PATCH 6/8] drivers: add Contiguous Memory Allocator

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Date:	Wed, 6 Jul 2011 16:37:04 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Marek Szyprowski <m.szyprowski@...sung.com>
Cc:	'Arnd Bergmann' <arnd@...db.de>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
	linux-mm@...ck.org, linaro-mm-sig@...ts.linaro.org,
	'Daniel Walker' <dwalker@...eaurora.org>,
	'Jonathan Corbet' <corbet@....net>,
	'Mel Gorman' <mel@....ul.ie>,
	'Chunsang Jeong' <chunsang.jeong@...aro.org>,
	'Michal Nazarewicz' <mina86@...a86.com>,
	'Jesse Barker' <jesse.barker@...aro.org>,
	'Kyungmin Park' <kyungmin.park@...sung.com>,
	'Ankita Garg' <ankita@...ibm.com>,
	'Andrew Morton' <akpm@...ux-foundation.org>,
	'KAMEZAWA Hiroyuki' <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH 6/8] drivers: add Contiguous Memory Allocator

On Wed, Jul 06, 2011 at 04:56:23PM +0200, Marek Szyprowski wrote:
> This will not solve our problems. We need CMA also to create at least one
> device private area that for sure will be in low memory (video codec).

You make these statements but you don't say why.  Can you please
explain why the video codec needs low memory - does it have a
restricted number of memory address bits which it can manipulate?
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