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=-7.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_PASS,USER_AGENT_GIT 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 5F76FC10F11 for ; Mon, 22 Apr 2019 18:00:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 27EC220B1F for ; Mon, 22 Apr 2019 18:00:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="kGOBL7bb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728345AbfDVSAP (ORCPT ); Mon, 22 Apr 2019 14:00:15 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:34512 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726132AbfDVSAP (ORCPT ); Mon, 22 Apr 2019 14:00:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=A0BDpVOgXC02e/K4pFq9eWl9TwTj4mJwMq6YoEZAeOc=; b=kGOBL7bbn17U7FYRX+YJE4QVP NjD2WSboZiRBvsZSfc04/GQJfERAoSTaYzDsV0CYRIgPG3ut763hDiCPV1a2f/wI9dJVtNhYyjSBL cLdm0C1kRLPv1n9rLQkQMBaZrmzeeKZRLwSivEradQYCUefSp+TmGGdvdhvimTiYqrDWqYPCaxz4+ MmrlrRKQ7313ZQJx+s3q90A+j0KPTRU2fsLFGTTrRXxlNbHn18eq4YGfYVYRNgEQdYFbGvZobo04A c7vh2Nn4sAaGROs99c819HBzMT2XVNZ2+ID2trz+h2ftdaitsj/PDo2S19YzSUZ3pS3S0g5+DvJGQ w0YXDq5eQ==; Received: from 213-225-37-80.nat.highway.a1.net ([213.225.37.80] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1hIdEd-00011O-Ru; Mon, 22 Apr 2019 18:00:08 +0000 From: Christoph Hellwig To: Robin Murphy Cc: Joerg Roedel , Catalin Marinas , Will Deacon , Tom Lendacky , iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: implement generic dma_map_ops for IOMMUs v3 Date: Mon, 22 Apr 2019 19:59:16 +0200 Message-Id: <20190422175942.18788-1-hch@lst.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 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