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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,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 1D78CC04AB5 for ; Mon, 3 Jun 2019 14:58:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E1EA027B0B for ; Mon, 3 Jun 2019 14:58:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729267AbfFCO6h (ORCPT ); Mon, 3 Jun 2019 10:58:37 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:52608 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728882AbfFCO6h (ORCPT ); Mon, 3 Jun 2019 10:58:37 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 1A66980D; Mon, 3 Jun 2019 07:58:37 -0700 (PDT) Received: from ostrya.cambridge.arm.com (ostrya.cambridge.arm.com [10.1.196.129]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 4AAD03F246; Mon, 3 Jun 2019 07:58:35 -0700 (PDT) From: Jean-Philippe Brucker To: joro@8bytes.org, alex.williamson@redhat.com Cc: jacob.jun.pan@linux.intel.com, eric.auger@redhat.com, ashok.raj@intel.com, yi.l.liu@intel.com, robdclark@gmail.com, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, robin.murphy@arm.com Subject: [PATCH v2 0/4] iommu: Add device fault reporting API Date: Mon, 3 Jun 2019 15:57:45 +0100 Message-Id: <20190603145749.46347-1-jean-philippe.brucker@arm.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Allow device drivers and VFIO to get notified on IOMMU translation fault, and handle recoverable faults (PCI PRI). Several series require this API (Intel VT-d and Arm SMMUv3 nested support, as well as the generic host SVA implementation). Changes since v1 [1]: * Allocate iommu_param earlier, in iommu_probe_device(). * Pass struct iommu_fault to fault handlers, instead of the iommu_fault_event wrapper. * Removed unused iommu_fault_event::iommu_private. * Removed unnecessary iommu_page_response::addr. * Added iommu_page_response::version, which would allow to introduce a new incompatible iommu_page_response structure (as opposed to just adding a flag + field). [1] [PATCH 0/4] iommu: Add device fault reporting API https://lore.kernel.org/lkml/20190523180613.55049-1-jean-philippe.brucker@arm.com/ Jacob Pan (3): driver core: Add per device iommu param iommu: Introduce device fault data iommu: Introduce device fault report API Jean-Philippe Brucker (1): iommu: Add recoverable fault reporting drivers/iommu/iommu.c | 236 ++++++++++++++++++++++++++++++++++++- include/linux/device.h | 3 + include/linux/iommu.h | 87 ++++++++++++++ include/uapi/linux/iommu.h | 153 ++++++++++++++++++++++++ 4 files changed, 476 insertions(+), 3 deletions(-) create mode 100644 include/uapi/linux/iommu.h -- 2.21.0