From patchwork Thu Feb 8 10:10:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 13549547 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 0AB8EC48260 for ; Thu, 8 Feb 2024 10:13:03 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rY1Nl-0003zr-Ao; Thu, 08 Feb 2024 05:11:49 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rY1Nj-0003z0-6N for qemu-devel@nongnu.org; Thu, 08 Feb 2024 05:11:47 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rY1Nh-0000Sf-K6 for qemu-devel@nongnu.org; Thu, 08 Feb 2024 05:11:46 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1707387105; 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: in-reply-to:in-reply-to:references:references; bh=DPrDVIdiESOiMapBfh0CtAjDydyyKmrnXSgaW0nkP/k=; b=XdfWLztLoIlXiWBo+XX68xNrcsXREPrsWFbIfy7q0q4IlHBxYGk/0VDXABbRhxcDGVv/rY JtN+7YOctqfC1X3WUkIaGzMPnF1u1ygPA22/tzcP3gy9Ax0tHmcmdrJlZuLooedDU45+29 3fgkDiDH4vh5bAeHUnkiFrP7NnMTOz4= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-679-0OlgeajHOEa3Qb3qMnwsiw-1; Thu, 08 Feb 2024 05:11:41 -0500 X-MC-Unique: 0OlgeajHOEa3Qb3qMnwsiw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 698B5101FA0B; Thu, 8 Feb 2024 10:11:41 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.39.192.197]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1238BC08EF7; Thu, 8 Feb 2024 10:11:38 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, jean-philippe@linaro.org, mst@redhat.com, peter.maydell@linaro.org, clg@redhat.com, zhenzhong.duan@intel.com, yanghliu@redhat.com Cc: alex.williamson@redhat.com, jasowang@redhat.com Subject: [PATCH v3 3/3] hw: Set virtio-iommu aw-bits default value on pc_q35 and arm virt Date: Thu, 8 Feb 2024 11:10:19 +0100 Message-ID: <20240208101128.655167-4-eric.auger@redhat.com> In-Reply-To: <20240208101128.655167-1-eric.auger@redhat.com> References: <20240208101128.655167-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.106, 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_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 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-bounces+qemu-devel=archiver.kernel.org@nongnu.org Currently the default input range can extend to 64 bits. On x86, when the virtio-iommu protects vfio devices, the physical iommu may support only 39 bits. Let's set the default to 39, as done for the intel-iommu. On ARM we set 48b as a default (matching SMMUv3 SMMU_IDR5.VAX == 0). We use hw_compat_8_2 to handle the compatibility for machines before 9.0 which used to have a virtio-iommu default input range of 64 bits. Of course if aw-bits is set from the command line, the default is overriden. Signed-off-by: Eric Auger Reviewed-by: Zhenzhong Duan Tested-by: Yanghang Liu Reviewed-by: Cédric Le Goater --- v2 -> v3: - collected Zhenzhong's R-b - use &error_abort instead of NULL error handle on object_property_get_uint() call (Cédric) - use VTD_HOST_AW_39BIT (Cédric) v1 -> v2: - set aw-bits to 48b on ARM - use hw_compat_8_2 to handle the compat for older machines which used 64b as a default --- hw/arm/virt.c | 6 ++++++ hw/core/machine.c | 5 ++++- hw/i386/pc.c | 6 ++++++ hw/virtio/virtio-iommu.c | 2 +- 4 files changed, 17 insertions(+), 2 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 368c2a415a..0994f2a560 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -2716,10 +2716,16 @@ static void virt_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { virtio_md_pci_pre_plug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp); } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) { + uint8_t aw_bits = object_property_get_uint(OBJECT(dev), + "aw-bits", &error_abort); hwaddr db_start = 0, db_end = 0; QList *reserved_regions; char *resv_prop_str; + if (!aw_bits) { + qdev_prop_set_uint8(dev, "aw-bits", 48); + } + if (vms->iommu != VIRT_IOMMU_NONE) { error_setg(errp, "virt machine does not support multiple IOMMUs"); return; diff --git a/hw/core/machine.c b/hw/core/machine.c index fb5afdcae4..70ac96954c 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -30,9 +30,12 @@ #include "exec/confidential-guest-support.h" #include "hw/virtio/virtio-pci.h" #include "hw/virtio/virtio-net.h" +#include "hw/virtio/virtio-iommu.h" #include "audio/audio.h" -GlobalProperty hw_compat_8_2[] = {}; +GlobalProperty hw_compat_8_2[] = { + { TYPE_VIRTIO_IOMMU_PCI, "aw-bits", "64" }, +}; const size_t hw_compat_8_2_len = G_N_ELEMENTS(hw_compat_8_2); GlobalProperty hw_compat_8_1[] = { diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 196827531a..ee2d379c90 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1456,6 +1456,8 @@ static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) { virtio_md_pci_pre_plug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp); } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) { + uint8_t aw_bits = object_property_get_uint(OBJECT(dev), + "aw-bits", &error_abort); /* Declare the APIC range as the reserved MSI region */ char *resv_prop_str = g_strdup_printf("0xfee00000:0xfeefffff:%d", VIRTIO_IOMMU_RESV_MEM_T_MSI); @@ -1464,6 +1466,10 @@ static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, qlist_append_str(reserved_regions, resv_prop_str); qdev_prop_set_array(dev, "reserved-regions", reserved_regions); + if (!aw_bits) { + qdev_prop_set_uint8(dev, "aw-bits", VTD_HOST_AW_39BIT); + } + g_free(resv_prop_str); } diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c index 7870bdbeee..c468e9b13b 100644 --- a/hw/virtio/virtio-iommu.c +++ b/hw/virtio/virtio-iommu.c @@ -1529,7 +1529,7 @@ static Property virtio_iommu_properties[] = { DEFINE_PROP_LINK("primary-bus", VirtIOIOMMU, primary_bus, TYPE_PCI_BUS, PCIBus *), DEFINE_PROP_BOOL("boot-bypass", VirtIOIOMMU, boot_bypass, true), - DEFINE_PROP_UINT8("aw-bits", VirtIOIOMMU, aw_bits, 64), + DEFINE_PROP_UINT8("aw-bits", VirtIOIOMMU, aw_bits, 0), DEFINE_PROP_END_OF_LIST(), };