Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755415AbYKKFsj (ORCPT ); Tue, 11 Nov 2008 00:48:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751821AbYKKFsa (ORCPT ); Tue, 11 Nov 2008 00:48:30 -0500 Received: from sh.osrg.net ([192.16.179.4]:37146 "EHLO sh.osrg.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751275AbYKKFs3 (ORCPT ); Tue, 11 Nov 2008 00:48:29 -0500 Date: Tue, 11 Nov 2008 14:48:11 +0900 To: andi@firstfloor.org Cc: y-goto@jp.fujitsu.com, tony.luck@intel.com, fujita.tomonori@lab.ntt.co.jp, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, joerg.roedel@amd.com Subject: Re: [Q] Why does dma_alloc_coherent() of ia64 GFP_DMA? From: FUJITA Tomonori In-Reply-To: <87d4h3pwhe.fsf@basil.nowhere.org> References: <20081110121123.F82A.E1E9C6FF@jp.fujitsu.com> <87d4h3pwhe.fsf@basil.nowhere.org> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: <20081111144711B.fujita.tomonori@lab.ntt.co.jp> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 650 Lines: 11 On Mon, 10 Nov 2008 13:59:57 +0100 Andi Kleen wrote: > Also I believe there are some issues with non continuous memory on > some IA64 systems -- e.g. Altixes iirc have the requirement > that you use the IOMMU for higher memory. So it's probably > not easy to change. Are you talking about this odd dma requirement? http://www.gelato.unsw.edu.au/archives/linux-ia64/0305/5604.html -- 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/