From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [PATCH v3 08/10] iommu/vt-d: Check whether device requires bounce buffer Date: Tue, 23 Apr 2019 08:08:58 +0200 Message-ID: <20190423060858.GA12762@lst.de> References: <20190421011719.14909-1-baolu.lu@linux.intel.com> <20190421011719.14909-9-baolu.lu@linux.intel.com> <20190422164755.GC31181@lst.de> <76e35340-32c3-ee0d-5232-bd8800248402@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <76e35340-32c3-ee0d-5232-bd8800248402@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Lu Baolu Cc: Christoph Hellwig , David Woodhouse , Joerg Roedel , ashok.raj@intel.com, jacob.jun.pan@intel.com, alan.cox@intel.com, kevin.tian@intel.com, mika.westerberg@linux.intel.com, pengfei.xu@intel.com, Konrad Rzeszutek Wilk , Marek Szyprowski , Robin Murphy , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Jacob Pan List-Id: iommu@lists.linux-foundation.org >> Again, this and the option should not be in a specific iommu driver. >> > > The option of whether bounce is ignored should be in the specific iommu > driver. Why? As a user I could not care less which IOMMU driver my particular system uses. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D9CE8C10F14 for ; Tue, 23 Apr 2019 06:09:16 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ACE5E20843 for ; Tue, 23 Apr 2019 06:09:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ACE5E20843 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 69572C00; Tue, 23 Apr 2019 06:09:16 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id E1F49BE7 for ; Tue, 23 Apr 2019 06:09:14 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from newverein.lst.de (verein.lst.de [213.95.11.211]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 843B7F4 for ; Tue, 23 Apr 2019 06:09:14 +0000 (UTC) Received: by newverein.lst.de (Postfix, from userid 2407) id B6D4368AFE; Tue, 23 Apr 2019 08:08:58 +0200 (CEST) Date: Tue, 23 Apr 2019 08:08:58 +0200 From: Christoph Hellwig To: Lu Baolu Subject: Re: [PATCH v3 08/10] iommu/vt-d: Check whether device requires bounce buffer Message-ID: <20190423060858.GA12762@lst.de> References: <20190421011719.14909-1-baolu.lu@linux.intel.com> <20190421011719.14909-9-baolu.lu@linux.intel.com> <20190422164755.GC31181@lst.de> <76e35340-32c3-ee0d-5232-bd8800248402@linux.intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <76e35340-32c3-ee0d-5232-bd8800248402@linux.intel.com> User-Agent: Mutt/1.5.17 (2007-11-01) Cc: kevin.tian@intel.com, mika.westerberg@linux.intel.com, ashok.raj@intel.com, Konrad Rzeszutek Wilk , alan.cox@intel.com, Robin Murphy , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, pengfei.xu@intel.com, jacob.jun.pan@intel.com, David Woodhouse , Christoph Hellwig X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org Message-ID: <20190423060858.KHUCVuWpJb0L94RS82VLq8xe0rHmqBML1QiInBuzw5I@z> >> Again, this and the option should not be in a specific iommu driver. >> > > The option of whether bounce is ignored should be in the specific iommu > driver. Why? As a user I could not care less which IOMMU driver my particular system uses. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu