From nobody Wed Nov 5 18:45:23 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 153581316524817.03869604909721; Sat, 1 Sep 2018 07:46:05 -0700 (PDT) Received: from localhost ([::1]:37468 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fw79p-0003dY-9U for importer@patchew.org; Sat, 01 Sep 2018 10:45:49 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55150) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fw6qS-0006PL-0N for qemu-devel@nongnu.org; Sat, 01 Sep 2018 10:25:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fw6oY-0005YX-3E for qemu-devel@nongnu.org; Sat, 01 Sep 2018 10:23:50 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:51086 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fw6oS-0005T4-Nx; Sat, 01 Sep 2018 10:23:44 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5A9C685756; Sat, 1 Sep 2018 14:23:44 +0000 (UTC) Received: from laptop.redhat.com (ovpn-116-157.ams2.redhat.com [10.36.116.157]) by smtp.corp.redhat.com (Postfix) with ESMTP id 47A352166B41; Sat, 1 Sep 2018 14:23:35 +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 Date: Sat, 1 Sep 2018 16:22:57 +0200 Message-Id: <20180901142312.11662-6-eric.auger@redhat.com> In-Reply-To: <20180901142312.11662-1-eric.auger@redhat.com> References: <20180901142312.11662-1-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Sat, 01 Sep 2018 14:23:44 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Sat, 01 Sep 2018 14:23:44 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'eric.auger@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [RFC 05/20] hw/arm/smmuv3: Implement get_attr API to report IOMMU_ATTR_VFIO_NESTED X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: yi.l.liu@intel.com, cdall@kernel.org, mst@redhat.com, jean-philippe.brucker@arm.com, peterx@redhat.com, alex.williamson@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RDMRC_1 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Virtual SMMUv3 requires physical nested stages for VFIO integration. Let's advertise this. Signed-off-by: Eric Auger --- hw/arm/smmuv3.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c index bb6a24e9b8..80aa4f3793 100644 --- a/hw/arm/smmuv3.c +++ b/hw/arm/smmuv3.c @@ -1504,6 +1504,17 @@ static void smmuv3_notify_flag_changed(IOMMUMemoryRe= gion *iommu, } } =20 +static int smmuv3_get_attr(IOMMUMemoryRegion *iommu, + enum IOMMUMemoryRegionAttr attr, + void *data) +{ + if (attr =3D=3D IOMMU_ATTR_VFIO_NESTED) { + *(bool *) data =3D true; + return 0; + } + return -EINVAL; +} + static void smmuv3_iommu_memory_region_class_init(ObjectClass *klass, void *data) { @@ -1511,6 +1522,7 @@ static void smmuv3_iommu_memory_region_class_init(Obj= ectClass *klass, =20 imrc->translate =3D smmuv3_translate; imrc->notify_flag_changed =3D smmuv3_notify_flag_changed; + imrc->get_attr =3D smmuv3_get_attr; } =20 static const TypeInfo smmuv3_type_info =3D { --=20 2.17.1