From patchwork Mon Nov 16 18:13:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 1401082 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=P/bslqO8; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 4CZclw6RRFz9sSs for ; Tue, 17 Nov 2020 05:19:08 +1100 (AEDT) Received: from localhost ([::1]:39038 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kej5m-0003wV-Os for incoming@patchwork.ozlabs.org; Mon, 16 Nov 2020 13:19:06 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:33660) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kej1A-0007DE-7o for qemu-devel@nongnu.org; Mon, 16 Nov 2020 13:14:20 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:29275) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kej16-0000XW-SZ for qemu-devel@nongnu.org; Mon, 16 Nov 2020 13:14:19 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605550455; 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=ZN7Kf0ABLNzu6mpU/9N64DLlNjN/+r9WhrF1DwjaPU4=; b=P/bslqO8HmwZn5yO0rw4fQnszsNzwVwXyrxapsNM7z+oX3antF9IvfHb2tHvt8iADpdkyv 4Vhd9oDRRmYgMJ6mk8MHh4doyPIsXJ2JL8vsCfHN10o33pRl2hkWOe/sByDdYEep5INpFx k14W//6H87HltY8zWWf/jWkSZzfYxu8= 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-518-s8vHsO_uPBGXxqSmkTQ6qw-1; Mon, 16 Nov 2020 13:14:09 -0500 X-MC-Unique: s8vHsO_uPBGXxqSmkTQ6qw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4368F85C732; Mon, 16 Nov 2020 18:14:07 +0000 (UTC) Received: from laptop.redhat.com (ovpn-113-230.ams2.redhat.com [10.36.113.230]) by smtp.corp.redhat.com (Postfix) with ESMTP id 29A8C5C1CF; Mon, 16 Nov 2020 18:13:51 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, alex.williamson@redhat.com Subject: [RFC v7 00/26] vSMMUv3/pSMMUv3 2 stage VFIO integration Date: Mon, 16 Nov 2020 19:13:23 +0100 Message-Id: <20201116181349.11908-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 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 Received-SPF: pass client-ip=63.128.21.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/16 04:46:27 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, RCVD_IN_MSPIKE_H5=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: peter.maydell@linaro.org, jacob.jun.pan@linux.intel.com, jean-philippe@linaro.org, tn@semihalf.com, shameerali.kolothum.thodi@huawei.com, nicoleotsuka@gmail.com, vivek.gautam@arm.com, yi.l.liu@intel.com, peterx@redhat.com, zhangfei.gao@gmail.com, yuzenghui@huawei.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.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 can be found at: https://github.com/eauger/qemu/tree/v5.2.0-rc1-2stage-rfcv7 Kernel Dependencies: [1] [PATCH v12 00/15] SMMUv3 Nested Stage Setup (IOMMU part) [2] [PATCH v11 00/13] SMMUv3 Nested Stage Setup (VFIO part) branch containing both: https://github.com/eauger/linux/tree/5.10-rc4-2stage-v12 History: 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 (25): update-linux-headers: Import iommu.h header update against 5.10-rc4 and IOMMU/VFIO nested stage APIs 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 memory: Add arch_id and leaf fields in IOTLBEntry 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/vfio/pci.h | 11 + include/exec/memory.h | 48 +- 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 | 16 + include/standard-headers/asm-x86/kvm_para.h | 1 + .../infiniband/hw/vmw_pvrdma/pvrdma_ring.h | 14 +- .../infiniband/hw/vmw_pvrdma/pvrdma_verbs.h | 2 +- include/standard-headers/linux/vhost_types.h | 9 + linux-headers/linux/iommu.h | 395 +++++++++++++ linux-headers/linux/vfio.h | 140 ++++- linux-headers/linux/vhost.h | 4 + hw/arm/smmuv3.c | 184 +++++- hw/pci/pci.c | 50 ++ hw/vfio/common.c | 527 ++++++++++++++---- hw/vfio/pci.c | 388 ++++++++++++- softmmu/memory.c | 10 + hw/arm/trace-events | 1 + hw/vfio/trace-events | 9 +- scripts/update-linux-headers.sh | 2 +- 21 files changed, 1705 insertions(+), 158 deletions(-) create mode 100644 include/hw/iommu/iommu.h create mode 100644 linux-headers/linux/iommu.h