From nobody Mon Oct 13 23:40:08 2025 Delivered-To: importer@patchew.org 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; 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=1582358619; cv=none; d=zohomail.com; s=zohoarc; b=HsLG5HwiOE5uyvmRX+Xs1AhKp0eOEXU+RQOmEhmeUA4+idmGYlr7et35YLXRPGWR8px0IqGmwlaEHjyoCs89Paf8AsBsxNQJ4dRAohUvVQBfboQkpvcw1GVMsUeyCMqJ8UYgVhzwbhNezIhYxsm6sdPV/KE+L49o1lGUo360du4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1582358619; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=UHi4HKdmVTig1sfYiZv85hYIlPmty/OP3BdyGN1u2og=; b=IZZJX9FMW/1gLCBCeirGwtbK7rmetJD9cDpdUUwvV3SgKov3Yqp0318tDsXpnkROfxxP0gSLcCPUy+Q1EeCrhvEwQcoaaAxL+Aq54Z7BRB37RwfPWhBGqy6Lb6j5g/h58xkVWCPro9Z3KaL40LhqYfP+QAKfbB18acQVBgF2t+0= 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 158235861945287.70323376358806; Sat, 22 Feb 2020 00:03:39 -0800 (PST) Received: from localhost ([::1]:39902 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j5PlB-0003vP-HT for importer@patchew.org; Sat, 22 Feb 2020 03:03:37 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:57434) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j5Pjj-0002B8-N6 for qemu-devel@nongnu.org; Sat, 22 Feb 2020 03:02:09 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j5Pji-000811-8X for qemu-devel@nongnu.org; Sat, 22 Feb 2020 03:02:07 -0500 Received: from mga12.intel.com ([192.55.52.136]:36218) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j5Pjh-0007tM-V2 for qemu-devel@nongnu.org; Sat, 22 Feb 2020 03:02:06 -0500 Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Feb 2020 00:01:57 -0800 Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga006.jf.intel.com with ESMTP; 22 Feb 2020 00:01:56 -0800 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,471,1574150400"; d="scan'208";a="240547659" From: Liu Yi L To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com Subject: [RFC v3.1 03/22] vfio: check VFIO_TYPE1_NESTING_IOMMU support Date: Sat, 22 Feb 2020 00:07:04 -0800 Message-Id: <1582358843-51931-4-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1582358843-51931-1-git-send-email-yi.l.liu@intel.com> References: <1582358843-51931-1-git-send-email-yi.l.liu@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.136 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: kevin.tian@intel.com, yi.l.liu@intel.com, Yi Sun , 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, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" VFIO needs to check VFIO_TYPE1_NESTING_IOMMU support with Kernel before further using it. e.g. requires to check IOMMU UAPI version. Cc: Kevin Tian Cc: Jacob Pan Cc: Peter Xu Cc: Eric Auger Cc: Yi Sun Cc: David Gibson Cc: Alex Williamson Signed-off-by: Liu Yi L Signed-off-by: Yi Sun --- hw/vfio/common.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 5ca1148..be1a9e5 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -1157,12 +1157,21 @@ static void vfio_put_address_space(VFIOAddressSpace= *space) static int vfio_get_iommu_type(VFIOContainer *container, Error **errp) { - int iommu_types[] =3D { VFIO_TYPE1v2_IOMMU, VFIO_TYPE1_IOMMU, + int iommu_types[] =3D { VFIO_TYPE1_NESTING_IOMMU, + VFIO_TYPE1v2_IOMMU, VFIO_TYPE1_IOMMU, VFIO_SPAPR_TCE_v2_IOMMU, VFIO_SPAPR_TCE_IOMMU }; - int i; + int i, version; =20 for (i =3D 0; i < ARRAY_SIZE(iommu_types); i++) { if (ioctl(container->fd, VFIO_CHECK_EXTENSION, iommu_types[i])) { + if (iommu_types[i] =3D=3D VFIO_TYPE1_NESTING_IOMMU) { + version =3D ioctl(container->fd, VFIO_CHECK_EXTENSION, + VFIO_NESTING_IOMMU_UAPI); + if (version < IOMMU_UAPI_VERSION) { + info_report("IOMMU UAPI incompatible for nesting"); + continue; + } + } return iommu_types[i]; } } @@ -1278,6 +1287,7 @@ static int vfio_connect_container(VFIOGroup *group, A= ddressSpace *as, } =20 switch (container->iommu_type) { + case VFIO_TYPE1_NESTING_IOMMU: case VFIO_TYPE1v2_IOMMU: case VFIO_TYPE1_IOMMU: { --=20 2.7.4