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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 F3F5AC4CEC4 for ; Wed, 18 Sep 2019 23:22:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D31A021907 for ; Wed, 18 Sep 2019 23:22:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387406AbfIRXWe (ORCPT ); Wed, 18 Sep 2019 19:22:34 -0400 Received: from mga18.intel.com ([134.134.136.126]:10563 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727305AbfIRXWe (ORCPT ); Wed, 18 Sep 2019 19:22:34 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Sep 2019 16:22:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,522,1559545200"; d="scan'208";a="199210209" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga002.jf.intel.com with ESMTP; 18 Sep 2019 16:22:33 -0700 From: Jacob Pan To: iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse , Alex Williamson , Jean-Philippe Brucker Cc: "Yi Liu" , "Tian, Kevin" , Raj Ashok , "Christoph Hellwig" , "Lu Baolu" , Jonathan Cameron , Eric Auger , Jacob Pan Subject: [PATCH 0/4] User API for nested shared virtual address (SVA) Date: Wed, 18 Sep 2019 16:26:30 -0700 Message-Id: <1568849194-47874-1-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This set consists of IOMMU APIs to support SVA in the guest, a.k.a nested SVA. As the complete SVA support is complex, we break down the enabling effort into three stages: 1. PCI device direct assignment 2. Fault handling, especially page request service support 3. Mediated device assignment Each stage includes common API and vendor specific IOMMU driver changes. This series is the common uAPI for stage #1. It is intended to build consensus on the interface which all vendors reply on. This series is extracted from the complete stage1 set which includes VT-d code. https://lkml.org/lkml/2019/8/15/951 Changes: - Use spinlock instead of mutex to protect ioasid custom allocators. This is to support callers in atomic context - Added more padding to guest PASID bind data for future extensions, suggested by Joerg. After much thinking, I did not do name change from PASID to IOASID in the uAPI, considering we have been using PASID in the rest of uAPIs. IOASID will remain used within the kernel. For more discussions lead to this series, checkout LPC 2019 VFIO/IOMMU/PCI microconference materials. https://linuxplumbersconf.org/event/4/sessions/66/#20190909 Jacob Pan (2): iommu/ioasid: Add custom allocators iommu: Introduce guest PASID bind function Jean-Philippe Brucker (1): iommu: Add I/O ASID allocator Yi L Liu (1): iommu: Introduce cache_invalidate API drivers/iommu/Kconfig | 4 + drivers/iommu/Makefile | 1 + drivers/iommu/ioasid.c | 432 +++++++++++++++++++++++++++++++++++++++++++++ drivers/iommu/iommu.c | 30 ++++ include/linux/ioasid.h | 75 ++++++++ include/linux/iommu.h | 36 ++++ include/uapi/linux/iommu.h | 169 ++++++++++++++++++ 7 files changed, 747 insertions(+) create mode 100644 drivers/iommu/ioasid.c create mode 100644 include/linux/ioasid.h -- 2.7.4