From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with SMTP id A08836B004A for ; Wed, 6 Jul 2011 11:47:35 -0400 (EDT) Received: from eu_spt1 (mailout1.w1.samsung.com [210.118.77.11]) by mailout1.w1.samsung.com (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTP id <0LNX0004G578L8@mailout1.w1.samsung.com> for linux-mm@kvack.org; Wed, 06 Jul 2011 16:47:33 +0100 (BST) Received: from linux.samsung.com ([106.116.38.10]) by spt1.w1.samsung.com (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTPA id <0LNX00FJ0577DP@spt1.w1.samsung.com> for linux-mm@kvack.org; Wed, 06 Jul 2011 16:47:31 +0100 (BST) Date: Wed, 06 Jul 2011 17:47:27 +0200 From: Marek Szyprowski Subject: RE: [PATCH 6/8] drivers: add Contiguous Memory Allocator In-reply-to: <20110706153704.GF8286@n2100.arm.linux.org.uk> Message-id: <007801cc3bf4$01fdefe0$05f9cfa0$%szyprowski@samsung.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-language: pl Content-transfer-encoding: 7BIT References: <1309851710-3828-1-git-send-email-m.szyprowski@samsung.com> <20110705113345.GA8286@n2100.arm.linux.org.uk> <006301cc3be4$daab1850$900148f0$%szyprowski@samsung.com> <201107061609.29996.arnd@arndb.de> <007101cc3bec$dfbba8c0$9f32fa40$%szyprowski@samsung.com> <20110706153704.GF8286@n2100.arm.linux.org.uk> Sender: owner-linux-mm@kvack.org List-ID: To: 'Russell King - ARM Linux' Cc: 'Arnd Bergmann' , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linux-mm@kvack.org, linaro-mm-sig@lists.linaro.org, 'Daniel Walker' , 'Jonathan Corbet' , 'Mel Gorman' , 'Chunsang Jeong' , 'Michal Nazarewicz' , 'Jesse Barker' , 'Kyungmin Park' , 'Ankita Garg' , 'Andrew Morton' , 'KAMEZAWA Hiroyuki' Hello, On Wednesday, July 06, 2011 5:37 PM Russell King - ARM Linux wrote: > 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? Nope, it only needs to put some type of memory buffers in first bank (effectively in 30000000-34ffffff area) and the others in the second bank (40000000-57ffffff area). The values are given for Samsung GONI board. Best regards -- Marek Szyprowski Samsung Poland R&D Center -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org