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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 4106DC433E0 for ; Thu, 25 Feb 2021 10:57:08 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 90EBF64EF5 for ; Thu, 25 Feb 2021 10:57:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 90EBF64EF5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:34974 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lFEKQ-0001uN-EE for qemu-devel@archiver.kernel.org; Thu, 25 Feb 2021 05:57:06 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:54414) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lFEGY-0005Ou-2w for qemu-devel@nongnu.org; Thu, 25 Feb 2021 05:53:06 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:23718) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1lFEGU-0004oQ-Hh for qemu-devel@nongnu.org; Thu, 25 Feb 2021 05:53:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1614250381; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=xEmRL2ORCls19l7hOAWKufFjqO6JvE1sMAIupx8A9Sk=; b=CpJyc9IM2L2+xfieuoY0KFkOtjpgOWnBo85AcoWs1JT+mXZ8DpOwAfCCjvBBuHD9IVb5GR psn6RwU+cv/dUhrcRApQyfKfhXjOiMdRn4P6GgBTeqY6iQsrstZtlfFAn8D902uJmnOWLt aTfUNsZheBvEzK/X2Fhk84Q680o1Fls= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-86-n3AC3OdqNty150KvANFTZg-1; Thu, 25 Feb 2021 05:52:59 -0500 X-MC-Unique: n3AC3OdqNty150KvANFTZg-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 54943107ACC7; Thu, 25 Feb 2021 10:52:57 +0000 (UTC) Received: from laptop.redhat.com (ovpn-112-150.ams2.redhat.com [10.36.112.150]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7F1885D9D7; Thu, 25 Feb 2021 10:52:40 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org, mst@redhat.com, alex.williamson@redhat.com, jacob.jun.pan@linux.intel.com, yi.l.liu@intel.com Subject: [RFC v8 00/28] vSMMUv3/pSMMUv3 2 stage VFIO integration Date: Thu, 25 Feb 2021 11:52:05 +0100 Message-Id: <20210225105233.650545-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eric.auger@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jean-philippe@linaro.org, tnowicki@marvell.com, maz@kernel.org, jiangkunkun@huawei.com, zhangfei.gao@foxmail.com, peterx@redhat.com, shameerali.kolothum.thodi@huawei.com, yuzenghui@huawei.com, zhangfei.gao@linaro.org, will@kernel.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Up to now vSMMUv3 has not been integrated with VFIO. VFIO integration requires to program the physical IOMMU consistently with the guest mappings. However, as opposed to VTD, SMMUv3 has no "Caching Mode" which allows easy trapping of guest mappings. This means the vSMMUV3 cannot use the same VFIO integration as VTD. However SMMUv3 has 2 translation stages. This was devised with virtualization use case in mind where stage 1 is "owned" by the guest whereas the host uses stage 2 for VM isolation. This series sets up this nested translation stage. It only works if there is one physical SMMUv3 used along with QEMU vSMMUv3 (in other words, it does not work if there is a physical SMMUv2). - We force the host to use stage 2 instead of stage 1, when we detect a vSMMUV3 is behind a VFIO device. For a VFIO device without any virtual IOMMU, we still use stage 1 as many existing SMMUs expect this behavior. - We use PCIPASIDOps to propage guest stage1 config changes on STE (Stream Table Entry) changes. - We implement a specific UNMAP notifier that conveys guest IOTLB invalidations to the host - We register MSI IOVA/GPA bindings to the host so that this latter can build a nested stage translation - As the legacy MAP notifier is not called anymore, we must make sure stage 2 mappings are set. This is achieved through another prereg memory listener. - Physical SMMU stage 1 related faults are reported to the guest via en eventfd mechanism and exposed trhough a dedicated VFIO-PCI region. Then they are reinjected into the guest. Best Regards Eric This series applies on top of [PATCH v2 0/7] Some vIOMMU fixes and PATCH 0/2] Additional vIOMMU fixes related to UNMAP notifiers All the patches can be found at: v8: https://github.com/eauger/qemu/tree/v5.2.0-2stage-rfcv8 Previous version: v7: https://github.com/eauger/qemu/tree/v5.2.0-rc1-2stage-rfcv7 Kernel Dependencies: [1] [PATCH v14 00/14] SMMUv3 Nested Stage Setup (IOMMU part) [2] [PATCH v12 00/13] SMMUv3 Nested Stage Setup (VFIO part) branch containing both: https://github.com/eauger/linux/tree/v5.11-stallv12-2stage-v14 History: v7 -> v8: - adapt to changes to the kernel uapi - Fix unregistration of MSI bindings - applies on top of range invalidation fixes - changes in IOTLBEntry (flags) - addressed all the comments from reviewers/testers I hope. Many thanks to all of you! see individual logs v6 -> v7: - rebase on v5.2.0-rc1 - added: "pci: Add return_page_response pci ops" and "vfio/pci: Implement return_page_response page response callback" for vSVA integration (not used in this series). v5 -> v6: - just rebase work v4 -> v5: - Use PCIPASIDOps for config update notifications - removal of notification for MSI binding which is not needed anymore - Use a single fault region - use the specific interrupt index v3 -> v4: - adapt to changes in uapi (asid cache invalidation) - check VFIO_PCI_DMA_FAULT_IRQ_INDEX is supported at kernel level before attempting to set signaling for it. - sync on 5.2-rc1 kernel headers + Drew's patch that imports sve_context.h - fix MSI binding for MSI (not MSIX) - fix mingw compilation v2 -> v3: - rework fault handling - MSI binding registration done in vfio-pci. MSI binding tear down called on container cleanup path - leaf parameter propagated v1 -> v2: - Fixed dual assignment (asid now correctly propagated on TLB invalidations) - Integrated fault reporting Eric Auger (27): hw/vfio/common: trace vfio_connect_container operations update-linux-headers: Import iommu.h header update against 5.11-rc2 and IOMMU/VFIO nested stage APIs memory: Add new fields in IOTLBEntry hw/arm/smmuv3: Properly propagate S1 asid invalidation memory: Add IOMMU_ATTR_VFIO_NESTED IOMMU memory region attribute memory: Add IOMMU_ATTR_MSI_TRANSLATE IOMMU memory region attribute memory: Introduce IOMMU Memory Region inject_faults API iommu: Introduce generic header vfio: Force nested if iommu requires it vfio: Introduce hostwin_from_range helper vfio: Introduce helpers to DMA map/unmap a RAM section vfio: Set up nested stage mappings vfio: Pass stage 1 MSI bindings to the host vfio: Helper to get IRQ info including capabilities vfio/pci: Register handler for iommu fault vfio/pci: Set up the DMA FAULT region vfio/pci: Implement the DMA fault handler hw/arm/smmuv3: Advertise MSI_TRANSLATE attribute hw/arm/smmuv3: Store the PASID table GPA in the translation config hw/arm/smmuv3: Fill the IOTLBEntry arch_id on NH_VA invalidation hw/arm/smmuv3: Fill the IOTLBEntry leaf field on NH_VA invalidation hw/arm/smmuv3: Pass stage 1 configurations to the host hw/arm/smmuv3: Implement fault injection hw/arm/smmuv3: Allow MAP notifiers pci: Add return_page_response pci ops vfio/pci: Implement return_page_response page response callback Liu Yi L (1): pci: introduce PCIPASIDOps to PCIDevice hw/arm/smmu-common.c | 2 +- hw/arm/smmu-internal.h | 1 + hw/arm/smmuv3.c | 222 ++++++- hw/arm/trace-events | 2 + hw/i386/intel_iommu.c | 6 +- hw/pci/pci.c | 50 ++ hw/ppc/spapr_iommu.c | 2 +- hw/vfio/common.c | 565 ++++++++++++++---- hw/vfio/pci.c | 415 ++++++++++++- hw/vfio/pci.h | 11 + hw/vfio/trace-events | 11 +- hw/virtio/virtio-iommu.c | 4 +- include/exec/memory.h | 64 +- include/hw/arm/smmu-common.h | 1 + include/hw/iommu/iommu.h | 36 ++ include/hw/pci/pci.h | 15 + include/hw/vfio/vfio-common.h | 19 + .../infiniband/hw/vmw_pvrdma/pvrdma_ring.h | 14 +- linux-headers/linux/iommu.h | 395 ++++++++++++ linux-headers/linux/vfio.h | 141 ++++- scripts/update-linux-headers.sh | 2 +- softmmu/memory.c | 10 + 22 files changed, 1828 insertions(+), 160 deletions(-) create mode 100644 include/hw/iommu/iommu.h create mode 100644 linux-headers/linux/iommu.h -- 2.26.2