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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 BE3C1C433F5 for ; Thu, 30 Aug 2018 01:36:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 69B2C20647 for ; Thu, 30 Aug 2018 01:36:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 69B2C20647 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727200AbeH3FgN (ORCPT ); Thu, 30 Aug 2018 01:36:13 -0400 Received: from mga12.intel.com ([192.55.52.136]:5367 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726457AbeH3FgN (ORCPT ); Thu, 30 Aug 2018 01:36:13 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 29 Aug 2018 18:36:34 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,305,1531810800"; d="scan'208";a="79442207" Received: from allen-box.sh.intel.com ([10.239.161.122]) by orsmga003.jf.intel.com with ESMTP; 29 Aug 2018 18:36:31 -0700 From: Lu Baolu To: Joerg Roedel , David Woodhouse Cc: ashok.raj@intel.com, sanjay.k.kumar@intel.com, jacob.jun.pan@intel.com, kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com, peterx@redhat.com, Jean-Philippe Brucker , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Lu Baolu Subject: [PATCH v2 00/12] iommu/vt-d: Add scalable mode support Date: Thu, 30 Aug 2018 09:35:12 +0800 Message-Id: <20180830013524.28743-1-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Intel vt-d rev3.0 [1] introduces a new translation mode called 'scalable mode', which enables PASID-granular translations for first level, second level, nested and pass-through modes. The vt-d scalable mode is the key ingredient to enable Scalable I/O Virtualization (Scalable IOV) [2] [3], which allows sharing a device in minimal possible granularity (ADI - Assignable Device Interface). It also includes all the capabilities required to enable Shared Virtual Addressing (SVA). As a result, previous Extended Context (ECS) mode is deprecated (no production ever implements ECS). Each scalable mode pasid table entry is 64 bytes in length, with fields point to the first level page table and the second level page table. The PGTT (Pasid Granular Translation Type) field is used by hardware to determine the translation type. A Scalable Mode .-------------. PASID Entry .-| | .------------------. .-| | 1st Level | 7| | | | | Page Table | .------------------. | | | | 6| | | | | | '------------------' | | '-------------' 5| | | '-------------' '------------------' '-------------' 4| | ^ '------------------' / 3| | / .-------------. .----.-------.-----. / .-| | 2| | FLPTR | |/ .-| | 2nd Level | .----'-------'-----. | | | Page Table | 1| | | | | | .-.-------..------.. | | | | 0| | SLPTR || PGTT ||----> | | '-------------' '-'-------''------'' | '-------------' 6 | 0 '-------------' 3 v .------------------------------------. | PASID Granular Translation Type | | | | 001b: 1st level translation only | | 101b: 2nd level translation only | | 011b: Nested translation | | 100b: Pass through | '------------------------------------' This patch series adds the scalable mode support in the Intel IOMMU driver. It will make all the Intel IOMMU features work in scalable mode. The changes are all constrained within the Intel IOMMU driver, as it's purely internal format change. References: [1] https://software.intel.com/en-us/download/intel-virtualization-technology-for-directed-io-architecture-specification [2] https://software.intel.com/en-us/download/intel-scalable-io-virtualization-technical-specification [3] https://schd.ws/hosted_files/lc32018/00/LC3-SIOV-final.pdf Change log: v1->v2: - Rebase all patches on top of v4.19-rc1; - Add 256-bit invalidation descriptor support; - Reserve a domain id for first level and pass-through usage to make hardware cache entries more efficiently; - Various code refinements. Lu Baolu (12): iommu/vt-d: Enumerate the scalable mode capability iommu/vt-d: Manage scalalble mode PASID tables iommu/vt-d: Move page table helpers into header iommu/vt-d: Add 256-bit invalidation descriptor support iommu/vt-d: Reserve a domain id for FL and PT modes iommu/vt-d: Add second level page table interface iommu/vt-d: Setup pasid entry for RID2PASID support iommu/vt-d: Pass pasid table to context mapping iommu/vt-d: Setup context and enable RID2PASID support iommu/vt-d: Add first level page table interface iommu/vt-d: Shared virtual address in scalable mode iommu/vt-d: Remove deferred invalidation .../admin-guide/kernel-parameters.txt | 12 +- drivers/iommu/dmar.c | 83 ++-- drivers/iommu/intel-iommu.c | 305 ++++++------- drivers/iommu/intel-pasid.c | 409 +++++++++++++++++- drivers/iommu/intel-pasid.h | 33 +- drivers/iommu/intel-svm.c | 170 +++----- drivers/iommu/intel_irq_remapping.c | 6 +- include/linux/dma_remapping.h | 9 +- include/linux/intel-iommu.h | 64 ++- 9 files changed, 764 insertions(+), 327 deletions(-) -- 2.17.1