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 smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (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 181AFC433FE for ; Fri, 18 Mar 2022 13:47:58 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id C354F60AE1; Fri, 18 Mar 2022 13:47:57 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id un97uZFsrFsW; Fri, 18 Mar 2022 13:47:57 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp3.osuosl.org (Postfix) with ESMTPS id A37E160774; Fri, 18 Mar 2022 13:47:56 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 75E05C0033; Fri, 18 Mar 2022 13:47:56 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [IPv6:2605:bc80:3010::138]) by lists.linuxfoundation.org (Postfix) with ESMTP id DC671C0073 for ; Fri, 18 Mar 2022 13:47:54 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id B369A84845 for ; Fri, 18 Mar 2022 13:47:54 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp1.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=nvidia.com Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XC-K9SkUCxLQ for ; Fri, 18 Mar 2022 13:47:54 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.8.0 Received: from NAM04-DM6-obe.outbound.protection.outlook.com (mail-dm6nam08on2062a.outbound.protection.outlook.com [IPv6:2a01:111:f400:7e8b::62a]) by smtp1.osuosl.org (Postfix) with ESMTPS id 04066847D7 for ; Fri, 18 Mar 2022 13:47:53 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=mRO/FKW2vxI2qIYa1gBK6XJZ+e4Q/bB75wL1cbusKRqQhwIrFBvuIbd+8XE+MCeGaanBku1Y2dCfq8OIn1dZ9GRu3fQybDRENz6sWM1NLECLvcjudT7IOIrtfxtWBGcbY7jICJQFflxiQMKIFtKYI9kHBwS2mvaD+UkHQAmAfGr+nyKQeoHvFCAKMA2kx4l92+qmmBPuZDgX8X4M+5fMiWHLGFMi2jL57iXzPMPXhCAXfgjXf36EEjUOjgCtbXZ5tVUEdDhFqzfZ0l3dsCc69MxopBwNQRxrsU1oNjeq3rUHVyQj7kSiROkUf26zt9IgRHUEjL37XOzaUPpbO9NCqA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=8l9wRV6cd7Xrb5cmvtsvKHunlNvMadtWN7ey+6ySPYU=; b=d31zm+QJO1i8XznWEFvSOPDMb8W2bzwFBvReqiF06HjG76NOZyNKijGf8kjqenJqoIDxvgq2KYsrEEbUHKSmtqzR0yZ7b5N1mUCm2SVhvpWabC0n5KnWNvjFBp/AYWYYQzyIabpbd4LulZMmBmlAhdivrdAkGZsXzxIzaVuzSuNIeDkOXbm04CAvCw/YmOdxgRanCXP7Y+U/v6Xy2lJ5AlJlnExB6M9Horo2xHRV75I9HOfZ0kP9vALvhwAn0BHke3KKtPPrn+36MU6Si3Grbtd9p45gAzsFuQGQPeQOqnNrGrXdBvlw5HaHFs+Z7PZBgFtegLA9RBA9ubBBsF4DxA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=8l9wRV6cd7Xrb5cmvtsvKHunlNvMadtWN7ey+6ySPYU=; b=HDVv2ekv7BCMNfp/VkHH2l8TZsAzn6jwN6UxUmkQCx2e+A/YD/fNeSerkfCeDvAotJOvDWCvJ4sHenFTphkxs0I28ScVOawXysMqkpcpCZBSS8tMS3+//eZ2qmKvPjvpfga3Ur8CyFcX+fnJN0OL3AwbZDev3H+Wq6wLwoC351O9VUaDTfqV5KUlLZPNA2FuA4gvpzxnBTLsRQ10JtjzKb6hAN9McW8V5skZBdUYAX1LgVG7ryXPHBapmx0uhKfcZYMX/OvpIURi0ZXJxqgSaup2q3sU192rC6Qiw0vTdnV3yK3mjSe4FT2k25QUTqAAQ3owlGnSsyhsBl2p9G3R4w== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from MN2PR12MB4192.namprd12.prod.outlook.com (2603:10b6:208:1d5::15) by CY4PR12MB1783.namprd12.prod.outlook.com (2603:10b6:903:121::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5081.15; Fri, 18 Mar 2022 13:47:51 +0000 Received: from MN2PR12MB4192.namprd12.prod.outlook.com ([fe80::11a0:970a:4c24:c70c]) by MN2PR12MB4192.namprd12.prod.outlook.com ([fe80::11a0:970a:4c24:c70c%5]) with mapi id 15.20.5081.018; Fri, 18 Mar 2022 13:47:51 +0000 Date: Fri, 18 Mar 2022 10:47:50 -0300 To: "Tian, Kevin" Subject: Re: [PATCH v2 3/8] iommu/vt-d: Implement device_pasid domain attach ops Message-ID: <20220318134750.GK11336@nvidia.com> References: <20220315050713.2000518-1-jacob.jun.pan@linux.intel.com> <20220315050713.2000518-4-jacob.jun.pan@linux.intel.com> <20220315143322.GW11336@nvidia.com> <20220315153620.710a30fa@jacob-builder> <20220315230457.GO11336@nvidia.com> <20220316135004.61ae1611@jacob-builder> <20220316221550.GS11336@nvidia.com> <17d73d88e08047f09636cf39edd69892@intel.com> <20220317000410.GU11336@nvidia.com> Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: BL1P222CA0028.NAMP222.PROD.OUTLOOK.COM (2603:10b6:208:2c7::33) To MN2PR12MB4192.namprd12.prod.outlook.com (2603:10b6:208:1d5::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 0fbd5aea-47fe-41bd-b9ea-08da08e5e55e X-MS-TrafficTypeDiagnostic: CY4PR12MB1783:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:MN2PR12MB4192.namprd12.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230001)(4636009)(366004)(6512007)(316002)(54906003)(2616005)(1076003)(186003)(26005)(2906002)(38100700002)(4326008)(6506007)(66476007)(66556008)(6916009)(66946007)(5660300002)(8676002)(7416002)(86362001)(4744005)(508600001)(33656002)(8936002)(36756003)(6486002); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?MX9VWYSiPMaixDqUg4/QUMEdSgrfb2XztNdzQAAIXPlDdJcmYYaEZ+Wpf6G0?= =?us-ascii?Q?TMfffpDbrgJqRt953CxNu3wqE6nkK0i1LVLs2iE3XRc0Yt64HcKPZ6rrxNQU?= =?us-ascii?Q?DZeCylJbyx0OT266Y7khHV0WxJiHEfQJGDWBAoAID7AO8D3e5RKzY8KCBrII?= =?us-ascii?Q?1kOvUm7ulftGWSJRRcsDhBcPLuqWF4JQ03VdFabpM+0qvZcg/iJwGs6vVVr7?= =?us-ascii?Q?B5hIwpKR1DXCUpIrrRQyYnjhDbngw6B3ejnHP+OxQ8ivHEHK2O9qSLUtxSY8?= =?us-ascii?Q?iR+9FZMDYsbFIAe0QDfzqZyThKedQ2SwWPlZ+0PmqYWzHzcp7CA5T5C3G76h?= =?us-ascii?Q?JL9UpxK6VPkLWoZbFMKF7yzdHUCIqtOyPQqsSwR9MrmF69cka/ioz6CWGqCk?= =?us-ascii?Q?LxncmqLdsHlfTJdrR1rlKqUxQfCMO3QZCF7bSC6/NTJE7TQm2JqUUReTDYfU?= =?us-ascii?Q?pkw3maUH9gFkEGr2oW9eATpAnOYADqMxJGf0N1gWMch+YJMDSrzVGTGIHGSX?= =?us-ascii?Q?D4JwQfkOAqDjIgaiYXavADmRnG981j4VnHul+lr74ga1Tw0pHMS2jqL2wGpK?= =?us-ascii?Q?FvfaVoVI0VZPumjvqFXcdy2jzBTYlTXVVytUSck96/L6Web0WnIVrAYWagwz?= =?us-ascii?Q?eULb4JAfmUHaNyiw7lYqIzjcnULRAH+KvKCwyk5lVCaeQeEYQLOQktwUtgwa?= =?us-ascii?Q?cvhfyOAuu+cTFgI4AdvWAihZiT5KRXxF7JuGinRJ2680SF4tn6ZyiGSHUXYz?= =?us-ascii?Q?xbDVDxc5+N2YVf1svTDAguw4ufRbCUXYaDYJ9s+SK9+XDczLAEhOm83gO6PP?= =?us-ascii?Q?H7NMD0bPmtpi3cALipe8y7H/UMz0Zi0Jpdm8H3sSRi7xYyXkWRlbdeZMmbKr?= =?us-ascii?Q?Zwtmlz267IOXSK5+GandhNJOmTls1Exi2shqlZa80zpN51vIgKVA17w7Dt28?= =?us-ascii?Q?dWj2WGbohl8RxCS02Enw33N3ZcN4mfw6Vk17BmFNhMO6nidnckFQqu6K4ZG/?= =?us-ascii?Q?QqmXA7COzWtMG+g+/eNRPyUHX+XweTlh65akWxXVz+C4hInJSE2wHkXUoBTr?= =?us-ascii?Q?fTYKbjOPcQNtzyV2S5ebm4Y5ioWh0hJjKEq4/u5wRNc85jG4PnpzgoOfuU+x?= =?us-ascii?Q?Xs+LLH3brWQxd8Efq8KmCOgQc4VDcbdBzhzrS37McpXEJyfWmpB75rTrLqDL?= =?us-ascii?Q?tD4H/9gcfafJzcQKLznaut0F9xdZObYICEq+nTA8eyvAjdgtkKy3soSbNhc3?= =?us-ascii?Q?e8yUQasvTDIoE0OSn5kq+VYyVYyhaoXi/QlxBJ01Bmck2qCrzFp6Ruc5OhOo?= =?us-ascii?Q?hrN6J08HzmQog8Vpp0ERDijNQKTUSYcPboKKJwUFkauAf2V/nX/mNInw+J0m?= =?us-ascii?Q?zVHvtPJ7UQC+WOGZyNgz9QXdjNvfL1Tx7VQfDSoOv8acKDzwwbIV8f55cKt6?= =?us-ascii?Q?w5I0Zk+SE2P0suwuZAT0oQ3coy5745H/?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0fbd5aea-47fe-41bd-b9ea-08da08e5e55e X-MS-Exchange-CrossTenant-AuthSource: MN2PR12MB4192.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Mar 2022 13:47:51.6319 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: ZbKMS7StgudzCoxVJdF+50+UvZwk7FUSKUokjaQ2jGzbv8rYPj7Y1DRTOhm5og8F X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR12MB1783 Cc: "Jiang, Dave" , "Raj, Ashok" , "Zanussi, Tom" , "Kumar, Sanjay K" , LKML , Christoph Hellwig , "iommu@lists.linux-foundation.org" , "Luck, Tony" , "Pan, Jacob jun" , "Williams, Dan J" , Jean-Philippe Brucker X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Jason Gunthorpe via iommu Reply-To: Jason Gunthorpe Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Fri, Mar 18, 2022 at 05:47:23AM +0000, Tian, Kevin wrote: > may remember more detail here) and we didn't hear strong interest > from customer on it. So this is just FYI for theoretical possibility and > I'm fine with even disallowing it before those issues are resolved. I didn't mean disallow, I just ment lets not optimize for it. Jason _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu