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 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 4A723C7115B for ; Fri, 20 Jun 2025 07:23:10 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uSW58-0004b9-K7; Fri, 20 Jun 2025 03:22:41 -0400 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 1uSW52-0004a3-Qx for qemu-devel@nongnu.org; Fri, 20 Jun 2025 03:22:34 -0400 Received: from mgamail.intel.com ([198.175.65.21]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uSW50-0008HF-Lq for qemu-devel@nongnu.org; Fri, 20 Jun 2025 03:22:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1750404151; x=1781940151; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=72XD2+orGphVnlfDHx8HuqM/mIuRt3K0/KSIIUT9oYU=; b=PTjw+eicLVUdZENrvS7akO9/lUcFgerLVDyOR4ZIpGlFPBCSTGmyzpsJ zBKnRcBk/gpEMXtvG1X9gIJhnyeJyxyvwl101F2pC10T9kzzPEPiGjM+s P0zFZY8JJh1IHnj63dxDYNfehgg62JoGl+9kGMaRGacqqKVx05EmGQfYK 1uH4mdGo/u+PKELXOwN72mv4nMzCw73WxS8byuEru+X/bu/KrRAjNEIB8 RCUk1GTJ3JfetJGJ4vL905nzRvB3SNjI2w47128E1svSL/xNS+0Xzscqr g12cVI1cuejqW+lk07ZWtw66Zr6RiiYom+yVUn8MXqGdy99i5dOD/7SeF Q==; X-CSE-ConnectionGUID: toBo3QigSn6AbDoyTJ2aRw== X-CSE-MsgGUID: GmzJsTnZQym3lDL2bdpudw== X-IronPort-AV: E=McAfee;i="6800,10657,11469"; a="52532303" X-IronPort-AV: E=Sophos;i="6.16,250,1744095600"; d="scan'208";a="52532303" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jun 2025 00:22:28 -0700 X-CSE-ConnectionGUID: sIe+/h4vRi+a7QhIV/4j7g== X-CSE-MsgGUID: NJCCrAtHRNqld5JTDVTD4w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,250,1744095600"; d="scan'208";a="181863079" Received: from spr-s2600bt.bj.intel.com ([10.240.192.127]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jun 2025 00:22:25 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, jasowang@redhat.com, peterx@redhat.com, ddutile@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, shameerali.kolothum.thodi@huawei.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan Subject: [PATCH v2 04/19] vfio/iommufd: Force creating nested parent domain Date: Fri, 20 Jun 2025 15:17:58 +0800 Message-Id: <20250620071813.55571-5-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250620071813.55571-1-zhenzhong.duan@intel.com> References: <20250620071813.55571-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=198.175.65.21; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -62 X-Spam_score: -6.3 X-Spam_bar: ------ X-Spam_report: (-6.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.897, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=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: 2.1.29 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 Call pci_device_get_viommu_cap() to get if vIOMMU supports VIOMMU_CAP_STAGE1, if yes, create nested parent domain which could be reused by vIOMMU to create nested domain. Suggested-by: Nicolin Chen Suggested-by: Yi Liu Signed-off-by: Zhenzhong Duan --- hw/vfio/iommufd.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c index d3efef71af..83a632bdee 100644 --- a/hw/vfio/iommufd.c +++ b/hw/vfio/iommufd.c @@ -20,6 +20,7 @@ #include "trace.h" #include "qapi/error.h" #include "system/iommufd.h" +#include "hw/iommu.h" #include "hw/qdev-core.h" #include "hw/vfio/vfio-cpr.h" #include "system/reset.h" @@ -352,6 +353,19 @@ static bool iommufd_cdev_autodomains_get(VFIODevice *vbasedev, flags = IOMMU_HWPT_ALLOC_DIRTY_TRACKING; } + /* + * If vIOMMU supports stage-1 translation, force to create nested parent + * domain which could be reused by vIOMMU to create nested domain. + */ + if (vbasedev->type == VFIO_DEVICE_TYPE_PCI) { + VFIOPCIDevice *vdev = container_of(vbasedev, VFIOPCIDevice, vbasedev); + + hw_caps = pci_device_get_viommu_cap(&vdev->pdev); + if (hw_caps & VIOMMU_CAP_STAGE1) { + flags |= IOMMU_HWPT_ALLOC_NEST_PARENT; + } + } + if (!iommufd_backend_alloc_hwpt(iommufd, vbasedev->devid, container->ioas_id, flags, IOMMU_HWPT_DATA_NONE, 0, NULL, -- 2.34.1