From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754540AbYEOJCL (ORCPT ); Thu, 15 May 2008 05:02:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751798AbYEOJB4 (ORCPT ); Thu, 15 May 2008 05:01:56 -0400 Received: from smtp-out01.alice-dsl.net ([88.44.60.11]:22251 "EHLO smtp-out01.alice-dsl.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751756AbYEOJBz (ORCPT ); Thu, 15 May 2008 05:01:55 -0400 To: FUJITA Tomonori Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org, muli@il.ibm.com, alexisb@us.ibm.com Subject: Re: [PATCH 0/2] x86: per-device dma_mapping_ops From: Andi Kleen References: <1210658692-960-1-git-send-email-fujita.tomonori@lab.ntt.co.jp> Date: Thu, 15 May 2008 11:01:09 +0200 In-Reply-To: <1210658692-960-1-git-send-email-fujita.tomonori@lab.ntt.co.jp> (FUJITA Tomonori's message of "Tue, 13 May 2008 15:04:50 +0900") Message-ID: <87y76cym96.fsf@basil.nowhere.org> User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-OriginalArrivalTime: 15 May 2008 08:54:09.0095 (UTC) FILETIME=[3CFACD70:01C8B669] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org FUJITA Tomonori writes: > This patchset adds per-device dma_mapping_ops support for > CONFIG_X86_64 like POWER architecture does. This change enables us to > cleanly fix the Calgary IOMMU issue that some devices are not behind > the IOMMU [1]. It also would be helpful to handle KVM PCI passthrough. This makes it basically impossible to do stack ops, which some people have been doing. -Andi