From nobody Mon Feb 9 13:59:11 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1614688984; cv=none; d=zohomail.com; s=zohoarc; b=Ewa2y23U+vdcFsSzVc+BbnGzzAf6JmxW2/N8x7IE79RO+h3qtM8Zwwr5VaqRlu9ZUwYLmKRxdkTa0Kk0K8V7zCGrHwWuYgMS1Sx+pi/5l4UyX2F+NuOixA+5fhAa1KnU9Bu3b4WuL7RWbte3DXi9ELMiwUp/mlVZCN9tlACwnhc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1614688984; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=3tMnt1VJn0cC4k/Ae13O2C8QMoGMTSJB6+uzPZ/LzXc=; b=n9PXqPbjdkJ+7nQurCvnfQcFaeCvHECy33LCnKs/ETc7QEA50KTR+Tu/bPKG4CEtcnOmubKcCcHkrAs/W3eXdUucYCVOk4QN5hYC/jtLLJKyp4BrneK1e9w77UJwP/l5nDoVuWzPZ9wFlgDDR9g+l8w+Q2BBRP9OFy7GkiSUYrw= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1614688984677845.6295995167649; Tue, 2 Mar 2021 04:43:04 -0800 (PST) Received: from localhost ([::1]:41090 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lH4Mh-0001Jq-LI for importer@patchew.org; Tue, 02 Mar 2021 07:43:03 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:60972) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lH4Jk-0007KP-HG for qemu-devel@nongnu.org; Tue, 02 Mar 2021 07:40:01 -0500 Received: from mga09.intel.com ([134.134.136.24]:30230) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lH4Jf-0002gL-QP for qemu-devel@nongnu.org; Tue, 02 Mar 2021 07:40:00 -0500 Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Mar 2021 04:39:54 -0800 Received: from yiliu-dev.bj.intel.com (HELO dual-ub.bj.intel.com) ([10.238.156.135]) by fmsmga004.fm.intel.com with ESMTP; 02 Mar 2021 04:39:49 -0800 IronPort-SDR: 6WcUqk7U1TGuzxwjvUu2J4TCsSuYRqtOFKwgSxx0xhnU4i9k2St4iqIfEj95i73XGT1skY6FAC I2HDik+u7j6Q== X-IronPort-AV: E=McAfee;i="6000,8403,9910"; a="186914690" X-IronPort-AV: E=Sophos;i="5.81,216,1610438400"; d="scan'208";a="186914690" IronPort-SDR: 7FTvWOJkC8bPt30nBvexOxahXLmfFnZEm9hZcL04uKbYV83qoJTsfdV7ZZvgE4kntC/dZHZNmF nKAVOEi9m6SA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,216,1610438400"; d="scan'208";a="427472732" From: Liu Yi L To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com, jasowang@redhat.com Subject: [RFC v11 06/25] intel_iommu: add get_iommu_attr() callback Date: Wed, 3 Mar 2021 04:38:08 +0800 Message-Id: <20210302203827.437645-7-yi.l.liu@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210302203827.437645-1-yi.l.liu@intel.com> References: <20210302203827.437645-1-yi.l.liu@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=134.134.136.24; envelope-from=yi.l.liu@intel.com; helo=mga09.intel.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, DATE_IN_FUTURE_06_12=1.947, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=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, kevin.tian@intel.com, yi.l.liu@intel.com, Yi Sun , Eduardo Habkost , kvm@vger.kernel.org, mst@redhat.com, jun.j.tian@intel.com, eric.auger@redhat.com, yi.y.sun@intel.com, Jacob Pan , pbonzini@redhat.com, Lingshan.Zhu@intel.com, hao.wu@intel.com, Richard Henderson , david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Return vIOMMU attribute to caller. e.g. VFIO call via PCI layer. Cc: Kevin Tian Cc: Jacob Pan Cc: Peter Xu Cc: Yi Sun Cc: Paolo Bonzini Cc: Richard Henderson Cc: Eduardo Habkost Signed-off-by: Liu Yi L --- hw/i386/intel_iommu.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index dd11248b6b..d89d6d7dd5 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -3462,6 +3462,28 @@ VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s,= PCIBus *bus, int devfn) return vtd_dev_as; } =20 +static int vtd_dev_get_iommu_attr(PCIBus *bus, void *opaque, int32_t devfn, + IOMMUAttr attr, void *data) +{ + int ret =3D 0; + + assert(0 <=3D devfn && devfn < PCI_DEVFN_MAX); + + switch (attr) { + case IOMMU_WANT_NESTING: + { + bool *pdata =3D data; + + /* return false until vSVA is ready */ + *pdata =3D false; + break; + } + default: + ret =3D -ENOENT; + } + return ret; +} + static uint64_t get_naturally_aligned_size(uint64_t start, uint64_t size, int gaw) { @@ -3758,6 +3780,7 @@ static AddressSpace *vtd_host_dma_iommu(PCIBus *bus, = void *opaque, int devfn) =20 static PCIIOMMUOps vtd_iommu_ops =3D { .get_address_space =3D vtd_host_dma_iommu, + .get_iommu_attr =3D vtd_dev_get_iommu_attr, }; =20 static bool vtd_decide_config(IntelIOMMUState *s, Error **errp) --=20 2.25.1