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,URIBL_BLOCKED,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 46FD7C4360F for ; Wed, 27 Mar 2019 08:05:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 152702075E for ; Wed, 27 Mar 2019 08:05:17 +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="RLo5EPop" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726237AbfC0IFP (ORCPT ); Wed, 27 Mar 2019 04:05:15 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:57080 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725768AbfC0IFP (ORCPT ); Wed, 27 Mar 2019 04:05:15 -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=YTimLkmVGcosS08x++tA4YThRjiAJsplcLRxVuPtfT0=; b=RLo5EPopwT3zOugjw20h0YJRo h/Nr/PB7yxc/s3yo27RivAFMFCAxnc+oOQB4yP5d8r+AaGfqkx/mfzFO2xTmnc333UyT4zvtjnEKU nWKVWebJFwPSUXQPrkZs3+zEh+vdu5lrdwsy91vfNBJ7AZu8DJ4Kfsw3U27gnvonklP5hRDKDO5XC +J+hcAEH2oAr8h0mx/HmxjI1sJlSalHiWj25cEjfJvY3/zN6wFGwD7u2aQF87Z8g4Y0PO+dRxnOtS 74G65fcDAIKB9j/wKnDQEk/WU3FV/utnMLViMxYW4UpcQVzIRGq2B6SwmULe+JlBBBHz2yiHtmlz9 B0vMaWXog==; Received: from 213-225-14-48.nat.highway.a1.net ([213.225.14.48] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1h93YZ-0005Ew-BM; Wed, 27 Mar 2019 08:05:07 +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 v2 [rebase + resend] Date: Wed, 27 Mar 2019 09:04:27 +0100 Message-Id: <20190327080448.5500-1-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.2 Gitweb: http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/dma-iommu-ops.2 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