From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: implement generic dma_map_ops for IOMMUs v4 Date: Thu, 2 May 2019 15:22:08 +0200 Message-ID: <20190502132208.GA3069@lst.de> References: <20190430105214.24628-1-hch@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20190430105214.24628-1-hch@lst.de> Sender: linux-kernel-owner@vger.kernel.org To: Catalin Marinas , Will Deacon Cc: Tom Lendacky , Robin Murphy , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org List-Id: iommu@lists.linux-foundation.org Hi Catalin and Will, can you quickly look over the arm64 parts? I'd really like to still get this series in for this merge window as it would conflict with a lot of dma-mapping work for next merge window, and we also have the amd and possibly intel iommu conversions to use it waiting. On Tue, Apr 30, 2019 at 06:51:49AM -0400, Christoph Hellwig wrote: > Hi Robin, > > please take a look at this series, which implements a completely generic > set of dma_map_ops for IOMMU drivers. This is done by taking the > existing arm64 code, moving it to drivers/iommu and then massaging it > so that it can also work for architectures with DMA remapping. This > should help future ports to support IOMMUs more easily, and also allow > to remove various custom IOMMU dma_map_ops implementations, like Tom > was planning to for the AMD one. > > A git tree is also available at: > > git://git.infradead.org/users/hch/misc.git dma-iommu-ops.3 > > Gitweb: > > http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/dma-iommu-ops.3 > > Changes since v3: > - fold the separate patch to refactor mmap bounds checking > - don't warn on not finding a vm_area > - improve a commit log > - refactor __dma_iommu_free a little differently > - remove a minor MSI map cleanup to avoid a conflict with the > "Split iommu_dma_map_msi_msg" series > > Changes since v2: > - address various review comments and include patches from Robin > > Changes since v1: > - only include other headers in dma-iommu.h if CONFIG_DMA_IOMMU is enabled > - keep using a scatterlist in iommu_dma_alloc > - split out mmap/sgtable fixes and move them early in the series > - updated a few commit logs > _______________________________________________ > iommu mailing list > iommu@lists.linux-foundation.org > https://lists.linuxfoundation.org/mailman/listinfo/iommu ---end quoted text--- 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=-7.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,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 2E541C43219 for ; Thu, 2 May 2019 13:23:24 +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 ED19A2075E for ; Thu, 2 May 2019 13:23:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ED19A2075E 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 B96043151; Thu, 2 May 2019 13:23:23 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 2A3D2314B for ; Thu, 2 May 2019 13:22:27 +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 AAB76880 for ; Thu, 2 May 2019 13:22:26 +0000 (UTC) Received: by newverein.lst.de (Postfix, from userid 2407) id B9DF368AA6; Thu, 2 May 2019 15:22:08 +0200 (CEST) Date: Thu, 2 May 2019 15:22:08 +0200 From: Christoph Hellwig To: Catalin Marinas , Will Deacon Subject: Re: implement generic dma_map_ops for IOMMUs v4 Message-ID: <20190502132208.GA3069@lst.de> References: <20190430105214.24628-1-hch@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190430105214.24628-1-hch@lst.de> User-Agent: Mutt/1.5.17 (2007-11-01) Cc: Tom Lendacky , iommu@lists.linux-foundation.org, Robin Murphy , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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: <20190502132208.f5z9Yb_wTC-st7AJjWpswamWciDfDfDrh9gELkcAQOM@z> Hi Catalin and Will, can you quickly look over the arm64 parts? I'd really like to still get this series in for this merge window as it would conflict with a lot of dma-mapping work for next merge window, and we also have the amd and possibly intel iommu conversions to use it waiting. On Tue, Apr 30, 2019 at 06:51:49AM -0400, Christoph Hellwig wrote: > Hi Robin, > > please take a look at this series, which implements a completely generic > set of dma_map_ops for IOMMU drivers. This is done by taking the > existing arm64 code, moving it to drivers/iommu and then massaging it > so that it can also work for architectures with DMA remapping. This > should help future ports to support IOMMUs more easily, and also allow > to remove various custom IOMMU dma_map_ops implementations, like Tom > was planning to for the AMD one. > > A git tree is also available at: > > git://git.infradead.org/users/hch/misc.git dma-iommu-ops.3 > > Gitweb: > > http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/dma-iommu-ops.3 > > Changes since v3: > - fold the separate patch to refactor mmap bounds checking > - don't warn on not finding a vm_area > - improve a commit log > - refactor __dma_iommu_free a little differently > - remove a minor MSI map cleanup to avoid a conflict with the > "Split iommu_dma_map_msi_msg" series > > Changes since v2: > - address various review comments and include patches from Robin > > Changes since v1: > - only include other headers in dma-iommu.h if CONFIG_DMA_IOMMU is enabled > - keep using a scatterlist in iommu_dma_alloc > - split out mmap/sgtable fixes and move them early in the series > - updated a few commit logs > _______________________________________________ > iommu mailing list > iommu@lists.linux-foundation.org > https://lists.linuxfoundation.org/mailman/listinfo/iommu ---end quoted text--- _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu