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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 D592BC3A59C for ; Fri, 16 Aug 2019 04:46:19 +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 A2870206C1 for ; Fri, 16 Aug 2019 04:46:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A2870206C1 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 62FC4C2A; Fri, 16 Aug 2019 04:46:19 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 18A05C21 for ; Fri, 16 Aug 2019 04:46:18 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id A53B8E5 for ; Fri, 16 Aug 2019 04:46:17 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id F247F68AFE; Fri, 16 Aug 2019 06:46:13 +0200 (CEST) Date: Fri, 16 Aug 2019 06:46:13 +0200 From: Christoph Hellwig To: Lu Baolu Subject: Re: [PATCH v6 5/8] iommu: Add bounce page APIs Message-ID: <20190816044613.GC4093@lst.de> References: <20190730045229.3826-1-baolu.lu@linux.intel.com> <20190730045229.3826-6-baolu.lu@linux.intel.com> <20190814083842.GB22669@8bytes.org> <445624e7-eb57-8089-8eb3-8687a65b1258@linux.intel.com> <20190815154845.GA18327@8bytes.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Cc: alan.cox@intel.com, Christoph Hellwig , Stefano Stabellini , ashok.raj@intel.com, Jonathan Corbet , pengfei.xu@intel.com, Ingo Molnar , David Woodhouse , kevin.tian@intel.com, Konrad Rzeszutek Wilk , Steven Rostedt , Bjorn Helgaas , Boris Ostrovsky , mika.westerberg@linux.intel.com, Alan Cox , Juergen Gross , Greg Kroah-Hartman , Mika Westerberg , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jacob.jun.pan@intel.com, Robin Murphy 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="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org On Fri, Aug 16, 2019 at 10:45:13AM +0800, Lu Baolu wrote: > Okay. I understand that adding these APIs in iommu.c is not a good idea. > And, I also don't think merging the bounce buffer implementation into > iommu_map() is feasible since iommu_map() is not DMA API centric. > > The bounce buffer implementation will eventually be part of DMA APIs > defined in dma-iommu.c, but currently those APIs are not ready for x86 > use yet. So I will put them in iommu/vt-d driver for this time being and > will move them to dma-iommu.c later. I think they are more or less ready actually, we just need more people reviewing the conversions. Tom just reposted the AMD one which will need a few more reviews, and he has an older patchset for intel-iommu as well that could use a some more eyes. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu