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: Mon, 22 Apr 2019 18:47:55 +0200 Message-ID: <20190422164755.GC31181@lst.de> References: <20190421011719.14909-1-baolu.lu@linux.intel.com> <20190421011719.14909-9-baolu.lu@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20190421011719.14909-9-baolu.lu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Lu Baolu Cc: 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 , Christoph Hellwig , Marek Szyprowski , Robin Murphy , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Jacob Pan List-Id: iommu@lists.linux-foundation.org On Sun, Apr 21, 2019 at 09:17:17AM +0800, Lu Baolu wrote: > +static inline bool device_needs_bounce(struct device *dev) > +{ > + struct pci_dev *pdev = NULL; > + > + if (intel_no_bounce) > + return false; > + > + if (dev_is_pci(dev)) > + pdev = to_pci_dev(dev); > + > + return pdev ? pdev->untrusted : false; > +} Again, this and the option should not be in a specific iommu driver. 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 1448AC282E1 for ; Mon, 22 Apr 2019 16:48:13 +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 DE6DF214AE for ; Mon, 22 Apr 2019 16:48:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DE6DF214AE 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 813C7CB6; Mon, 22 Apr 2019 16:48:12 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 626507F6 for ; Mon, 22 Apr 2019 16:48:11 +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 084C6829 for ; Mon, 22 Apr 2019 16:48:10 +0000 (UTC) Received: by newverein.lst.de (Postfix, from userid 2407) id 2875068AFE; Mon, 22 Apr 2019 18:47:56 +0200 (CEST) Date: Mon, 22 Apr 2019 18:47:55 +0200 From: Christoph Hellwig To: Lu Baolu Subject: Re: [PATCH v3 08/10] iommu/vt-d: Check whether device requires bounce buffer Message-ID: <20190422164755.GC31181@lst.de> References: <20190421011719.14909-1-baolu.lu@linux.intel.com> <20190421011719.14909-9-baolu.lu@linux.intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190421011719.14909-9-baolu.lu@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: <20190422164755.GALVuUbU-3xjq3fBcHt4ltXBYlauns_fNDPG7oHIhPU@z> On Sun, Apr 21, 2019 at 09:17:17AM +0800, Lu Baolu wrote: > +static inline bool device_needs_bounce(struct device *dev) > +{ > + struct pci_dev *pdev = NULL; > + > + if (intel_no_bounce) > + return false; > + > + if (dev_is_pci(dev)) > + pdev = to_pci_dev(dev); > + > + return pdev ? pdev->untrusted : false; > +} Again, this and the option should not be in a specific iommu driver. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu