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 62CB4C282C2 for ; Wed, 13 Feb 2019 18:29:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 387BC2083B for ; Wed, 13 Feb 2019 18:29:12 +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="J9Nm2GHE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404974AbfBMS3K (ORCPT ); Wed, 13 Feb 2019 13:29:10 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:51412 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390766AbfBMS3H (ORCPT ); Wed, 13 Feb 2019 13:29:07 -0500 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=J9Nm2GHEIkdLkhGRPWtgpDtwF A6rUBQlupf3mF2Hue6kRMlMoqZttITZO20fTBwpq+dAam216Rd7jDVIv0yXF0MXtyarfCabgZQj8E czKwafk5RJv6kqvXL9yX9FzwjXuDZpGuU3do0Rb0JJApu+jxalrY7SUxMnWPT0DC2mektgsY4IzeG 18NpHK3r1zOkC07m26o5xJckyXhz+8u/rFyFFizRJTc4FzYw/2b1mouROzDcq5E56/SqdI+1fu8OB QP4DEasIpRH2C5nw9LOi6G5UMCX1x2dIRoXfcXG93PDknnVIzeVyxGd7HwYfj9uGHUGpnv9k/GyOm gelDcfwpA==; Received: from 089144210182.atnat0019.highway.a1.net ([89.144.210.182] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1gtzHI-00077E-Rz; Wed, 13 Feb 2019 18:29:01 +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 Date: Wed, 13 Feb 2019 19:28:31 +0100 Message-Id: <20190213182900.16707-1-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