Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750860AbWIUAkU (ORCPT ); Wed, 20 Sep 2006 20:40:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750856AbWIUAkU (ORCPT ); Wed, 20 Sep 2006 20:40:20 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:25297 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S1750776AbWIUAkS (ORCPT ); Wed, 20 Sep 2006 20:40:18 -0400 Subject: Re: ZONE_DMA (was: Re: 2.6.19 -mm merge plans) From: Alan Cox To: Christoph Lameter Cc: Andrew Morton , "Martin J. Bligh" , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Christoph Hellwig In-Reply-To: References: <20060920135438.d7dd362b.akpm@osdl.org> <4511D855.7050100@mbligh.org> <20060920172253.f6d11445.akpm@osdl.org> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Thu, 21 Sep 2006 02:03:50 +0100 Message-Id: <1158800630.11109.72.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.2 (2.6.2-1.fc5.5) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 576 Lines: 12 Ar Mer, 2006-09-20 am 17:31 -0700, ysgrifennodd Christoph Lameter: > ZONE_DMA does not have a bright future with IOMMUs and other things > around. None of my system uses ZONE_DMA and I have a variety of them. IOMMUs don't always help. They IOMMU aperture on AMD64 for example is too high to help devices with below 32bit limits. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/