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=-6.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 9900BC433E0 for ; Wed, 24 Jun 2020 13:29:49 +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 5F0CE20738 for ; Wed, 24 Jun 2020 13:29:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Bzryc86c" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5F0CE20738 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]:46382 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jo5TI-0003GB-Jw for qemu-devel@archiver.kernel.org; Wed, 24 Jun 2020 09:29:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46706) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jo5Qs-0007k0-TQ for qemu-devel@nongnu.org; Wed, 24 Jun 2020 09:27:18 -0400 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:38045 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jo5QK-0001cV-AN for qemu-devel@nongnu.org; Wed, 24 Jun 2020 09:27:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593005201; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=gF9CwaZhuNz4IeFQ2iNOrO1saBngybkxqVrsttmO9Oo=; b=Bzryc86cer1mqLD7inb4di9lSzlMEpccNe3Tjbu6mh8ywar9boORqUkNWHDAGE5g1tQi2B 8Ep5WU0GOaVQmCQVO9a6XGqLxgIR6Vu+7RyaJu4Q3btngVk1HK/dXu3BKiZCfapykFEkXk yANeVPkywMOjdZSTNcRatwu13LGUkRk= 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-137-I_UBtH1APby7vV67wrzsPQ-1; Wed, 24 Jun 2020 09:26:40 -0400 X-MC-Unique: I_UBtH1APby7vV67wrzsPQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E7712EC1A4; Wed, 24 Jun 2020 13:26:38 +0000 (UTC) Received: from laptop.redhat.com (ovpn-114-197.ams2.redhat.com [10.36.114.197]) by smtp.corp.redhat.com (Postfix) with ESMTP id 61D7710016DA; Wed, 24 Jun 2020 13:26:27 +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, armbru@redhat.com, pbonzini@redhat.com, jean-philippe@linaro.org, bbhushan2@marvell.com, peterx@redhat.com Subject: [PATCH v5 0/5] VIRTIO-IOMMU probe request support and MSI bypass on ARM Date: Wed, 24 Jun 2020 15:26:20 +0200 Message-Id: <20200624132625.27453-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=207.211.31.81; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/24 01:59:40 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, 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_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" By default the virtio-iommu translates MSI transactions. This behavior is inherited from ARM SMMU. However the virt machine code knows where the MSI doorbells are, so we can easily declare those regions as VIRTIO_IOMMU_RESV_MEM_T_MSI. With that setting the guest iommu subsystem will not need to map MSIs. This setup will simplify the VFIO integration. In this series, the ITS or GICV2M doorbells are declared as HW MSI regions to be bypassed by the VIRTIO-IOMMU. This also paves the way to the x86 integration where the MSI region, [0xFEE00000,0xFEEFFFFF], will be exposed by the q35 machine. However this will be handled in a separate series when not-DT support gets resolved. Best Regards Eric This series can be found at: https://github.com/eauger/qemu/tree/v5.0.0-virtio-iommu-msi-bypass-v5 History: v4 -> v5: - Take into account some additional comments from Markus: - reserved region type becomes an unsigned + some comment/desc rewording - assert if the type is not RESERVED or MSI v3 -> v4: - collected Jean and markus's R-bs - tool into account all Markus' comments in [1/5] (except removal of goto) - use ':' as delimitor instead of commas - add example in 4/5 commit message as suggested by Markus v2 -> v3: - Introduce VIRT_MSI_CTRL_NONE in VirtMSIControllerType - do not fill the remainder of the probe buffer v1 -> v2: - check which MSI controller is in use and advertise the corresponding MSI doorbell - managed for both ITS and GICv2M - various fixes spotted by Peter and Jean-Philippe, see individual logs v1: Most of those patches were respinned from [PATCH for-5.0 v11 00/20] VIRTIO-IOMMU device except the last one which is new Eric Auger (5): qdev: Introduce DEFINE_PROP_RESERVED_REGION virtio-iommu: Implement RESV_MEM probe request virtio-iommu: Handle reserved regions in the translation process virtio-iommu-pci: Add array of Interval properties hw/arm/virt: Let the virtio-iommu bypass MSIs include/exec/memory.h | 6 ++ include/hw/arm/virt.h | 7 ++ include/hw/qdev-properties.h | 3 + include/hw/virtio/virtio-iommu.h | 2 + include/qemu/typedefs.h | 1 + hw/arm/virt.c | 18 +++++ hw/core/qdev-properties.c | 89 ++++++++++++++++++++++++ hw/virtio/virtio-iommu-pci.c | 3 + hw/virtio/virtio-iommu.c | 112 +++++++++++++++++++++++++++++-- hw/virtio/trace-events | 1 + 10 files changed, 238 insertions(+), 4 deletions(-) -- 2.20.1