From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail191.messagelabs.com (mail191.messagelabs.com [216.82.242.19]) by kanga.kvack.org (Postfix) with ESMTP id 83A516B0087 for ; Thu, 23 Dec 2010 05:07:52 -0500 (EST) Date: Thu, 23 Dec 2010 10:06:42 +0000 From: Russell King - ARM Linux Subject: Re: [PATCHv8 00/12] Contiguous Memory Allocator Message-ID: <20101223100642.GD3636@n2100.arm.linux.org.uk> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org To: Kyungmin Park Cc: Michal Nazarewicz , linux-arm-kernel@lists.infradead.org, Daniel Walker , Johan MOSSBERG , Mel Gorman , linux-kernel@vger.kernel.org, Michal Nazarewicz , linux-mm@kvack.org, Ankita Garg , Andrew Morton , linux-media@vger.kernel.org, KAMEZAWA Hiroyuki , Marek Szyprowski List-ID: On Thu, Dec 23, 2010 at 06:30:57PM +0900, Kyungmin Park wrote: > Hi Andrew, > > any comments? what's the next step to merge it for 2.6.38 kernel. we > want to use this feature at mainline kernel. Has anyone addressed my issue with it that this is wide-open for abuse by allocating large chunks of memory, and then remapping them in some way with different attributes, thereby violating the ARM architecture specification? In other words, do we _actually_ have a use for this which doesn't involve doing something like allocating 32MB of memory from it, remapping it so that it's DMA coherent, and then performing DMA on the resulting buffer? -- 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 policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org