From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta8.messagelabs.com (mail6.bemta8.messagelabs.com [216.82.243.55]) by kanga.kvack.org (Postfix) with ESMTP id 432EC9000C2 for ; Wed, 6 Jul 2011 10:48:57 -0400 (EDT) Received: by vxg38 with SMTP id 38so7267016vxg.14 for ; Wed, 06 Jul 2011 07:48:55 -0700 (PDT) Date: Wed, 6 Jul 2011 10:37:37 -0400 (EDT) From: Nicolas Pitre Subject: Re: [Linaro-mm-sig] [PATCH 6/8] drivers: add Contiguous Memory Allocator In-Reply-To: <20110706142345.GC8286@n2100.arm.linux.org.uk> Message-ID: 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> <20110706142345.GC8286@n2100.arm.linux.org.uk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Russell King - ARM Linux Cc: Arnd Bergmann , 'Daniel Walker' , 'Jonathan Corbet' , 'Mel Gorman' , 'Chunsang Jeong' , 'Jesse Barker' , 'KAMEZAWA Hiroyuki' , linux-kernel@vger.kernel.org, 'Michal Nazarewicz' , linaro-mm-sig@lists.linaro.org, linux-mm@kvack.org, 'Kyungmin Park' , 'Ankita Garg' , 'Andrew Morton' , linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org On Wed, 6 Jul 2011, Russell King - ARM Linux wrote: > Another issue is that when a platform has restricted DMA regions, > they typically don't fall into the highmem zone. As the dmabounce > code allocates from the DMA coherent allocator to provide it with > guaranteed DMA-able memory, that would be rather inconvenient. Do we encounter this in practice i.e. do those platforms requiring large contiguous allocations motivating this work have such DMA restrictions? Nicolas -- 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