From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: More thoughts on getting rid of ZONE_DMA Date: Sun, 24 Sep 2006 09:26:40 +0200 References: <4515EF28.9000805@mbligh.org> In-Reply-To: <4515EF28.9000805@mbligh.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200609240926.41208.ak@suse.de> Sender: owner-linux-mm@kvack.org Return-Path: To: "Martin J. Bligh" Cc: Christoph Lameter , Alan Cox , akpm@google.com, linux-kernel@vger.kernel.org, Christoph Hellwig , James Bottomley , linux-mm@kvack.org List-ID: > If it's the 16MB DMA window for ia32 we're talking about, wouldn't > it be easier just to remove it from the fallback lists? (assuming > you have at least 128MB of memory or something, blah, blah). Saves > doing migration later. That is essentially already the case because the mm has special heuristics to preserve lower zones. Usually those tend to keep the 16MB mostly free unless you really use GFP_DMA. -Andi -- 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/ . Don't email: email@kvack.org