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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 119E4C433EF for ; Wed, 9 Feb 2022 13:31:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233755AbiBINbN (ORCPT ); Wed, 9 Feb 2022 08:31:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46918 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234051AbiBINbI (ORCPT ); Wed, 9 Feb 2022 08:31:08 -0500 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (mail-bn8nam12on2050.outbound.protection.outlook.com [40.107.237.50]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B186DC05CB9A for ; Wed, 9 Feb 2022 05:31:11 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=GMLwv2BgVNu0rC7nAFJk9GivEFBbTG2cj/UEq8Q8lfcBgqr43mOKEVakQ9MGWGmoz9K98Hcn+Ul6ros3PGlbgYfaii9R//VitmEUqUdNndTaK7hC3tOe/W2aXlm3j++GwL6tfmWgEYBi5Ty0nYfvTceGlBV7hF7mmmFl+jowTB1zWDFKfRynSQa2LSByxWUV8/+TMpmbsTFvbjAMoc0zkc2ZDVplVOk2i6axEjyIOP7Ny24CrzlxtVs6gLCqe+k8oSl2hn4VbZDleLr8DTmggyTguV+PX4uJmySW16RQnfSSiIkoXf7qWtTxP581C4jQ/rrQ/e3RRiV6hCuiPXNPsw== 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=l3OIrGqTgYnAbs5pbqHY7Q7D5/jVMfAnt8wDwuRmphg=; b=bVRlFodLaQTNDU3ZyPSSr3GsIHIvYdMY92YuftfUjucnKcOBaHfoaevWQh+TchzHL3tsbnOzpEf/ocxWBqBspL+6LWwDDxNdXaHc+IPqtkWDQYmffcFdx1dXjT24NPm86RXYnm85fkLZGxNW6PhWHlzBFLS6UgecAc+FeNSR10o5LzyDjII3IQS3Y3liKGHQQL9QULFzYzqiiGyNnRZwvSIlma53soqL7M0PdhemYqVKXhxgBFQ2mENYSJv06s55u4gTchLV2igdTneqwgXsct5aRSoj2BZf3mNoS2I45wE4hhUGeUUIZE2pNanZGBptWXNI8zrBFofAQ7InseT+Rw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=none; dmarc=none; dkim=none; 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=l3OIrGqTgYnAbs5pbqHY7Q7D5/jVMfAnt8wDwuRmphg=; b=LEJuoTvf/s64A9/wne0saSQUlHv6zKeOzhd6A3P+Zsxe0tXWf70JvetAmGv33JqyuoNZ/DCDeJ26p9++srVlS7+9n6MPAaRCT5OF7UvsZzIXAmAEyR6pkyMw0oH/TCgunIFHYZ0vNtcbc0wdcO5ttpWE9MlTlCA3ZVMNGngG2Bz+3ijxOW8S8zPw3xPPd7GJGswancry87HmEk0UI8vLEdlPpX+89T3nRYfQJpBjB9ArM/jcIL6krSKPnhR2d2E7P8P4FIfsov9bl4gmGdTYZCyrIxOq80v+m7bzMOyIpjEy/uKehQf1ZaCG+FS3q6+w6pRwYADzioQeN/Zo88D3vQ== 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 DM4PR12MB5916.namprd12.prod.outlook.com (2603:10b6:8:69::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4975.11; Wed, 9 Feb 2022 13:31:10 +0000 Received: from MN2PR12MB4192.namprd12.prod.outlook.com ([fe80::e8f4:9793:da37:1bd3]) by MN2PR12MB4192.namprd12.prod.outlook.com ([fe80::e8f4:9793:da37:1bd3%4]) with mapi id 15.20.4975.011; Wed, 9 Feb 2022 13:31:10 +0000 Date: Wed, 9 Feb 2022 09:31:08 -0400 From: Jason Gunthorpe To: Lu Baolu Cc: Joerg Roedel , Christoph Hellwig , Ben Skeggs , Kevin Tian , Ashok Raj , Will Deacon , Robin Murphy , Alex Williamson , Eric Auger , Liu Yi L , Jacob jun Pan , David Airlie , Daniel Vetter , Thierry Reding , Jonathan Hunter , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 05/10] iommu: Remove apply_resv_region Message-ID: <20220209133108.GW4160@nvidia.com> References: <20220208012559.1121729-1-baolu.lu@linux.intel.com> <20220208012559.1121729-6-baolu.lu@linux.intel.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220208012559.1121729-6-baolu.lu@linux.intel.com> X-ClientProxiedBy: BL1PR13CA0248.namprd13.prod.outlook.com (2603:10b6:208:2ba::13) 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: bc5e0f7c-c7ce-4c8f-3bf3-08d9ebd06f17 X-MS-TrafficTypeDiagnostic: DM4PR12MB5916:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4125; 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)(54906003)(316002)(508600001)(6486002)(6916009)(33656002)(6506007)(36756003)(6512007)(8676002)(2616005)(7416002)(8936002)(4326008)(1076003)(66946007)(186003)(26005)(2906002)(5660300002)(66476007)(86362001)(83380400001)(66556008)(4744005)(38100700002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?5QAVf6r7gJqfxgNjyfv2caKD8yiTP5CtBcctTSnBHCbITn+HfHRUZ/wgHbAh?= =?us-ascii?Q?tLVYKiHWlOL98Yu0BdI7RAuwpJJ3DD/dl86VLVPowOrqmU6qq3COvK3BZJ89?= =?us-ascii?Q?ynqhxlyX6tGKV4YrVQg8MKThwFDDfPAKbsvVW1MVwrUQjf34I7Nqul4MCtGt?= =?us-ascii?Q?zaiyO0aV4WOHDyrxQbt3AnfIdbwwmHuLAUbHhpdQ9euvlHGKj3ziUIHo3GuS?= =?us-ascii?Q?nDZnw+9RcwIFuPz1SHajK6E0PoFHqhwjwIV2v9Zo5d0Soho/C7rKyWipWpFE?= =?us-ascii?Q?fccDPBhUl1yY9IPiFCmI27GLcfhVBzXpK8OwDsP7Yn+jtuJMcq9ORNsEipeC?= =?us-ascii?Q?TGHwKKZGS+z/FcXf6SEtFZjYWWWAutKiIQDe9dDrCfWS09mupmiz1jECSJKW?= =?us-ascii?Q?XeIM3nZ3TqOq00tEl6kwNjgGFGKnLfntsLTIZ++/CRxn6HlkBqpXUVSKieAv?= =?us-ascii?Q?Xgi+2mcL1zqkpVGatwR4a+M5QgECQi1y7nhwWNNPtydbBUg+M2g4PKqvN/At?= =?us-ascii?Q?zpX+aybWGz5dhHO+GJhRTbxqtASfyKx/h1LbRjxtTdctTtfxnB2G7dq9WvbH?= =?us-ascii?Q?NOii+Mc1ay2T/ZMLfpdbcfCgo7YAi3U7DpUY1QBLba3lUnDyevEdoJeqANWT?= =?us-ascii?Q?GL901i1tCcB9E0usMDQ5adUmmoHly6oN6b1vxV+yMzWCAOUeBH2yNxs/tpvx?= =?us-ascii?Q?cYHb1uUpIOngdBg1szITYuGhwc3DtwCpkKkC5WWBw3vWHuiB2AKuw8lt0kxC?= =?us-ascii?Q?JhLh7I9AeOGcWGtjmkQpfD6wSqhwI11IZqIYfQTJN9pzgEq98v/OZajJpgVN?= =?us-ascii?Q?V/6PX1TKsWocB/cpLG/kzZ6thkqNgRuMPx+JxDkrgZnh4b7gA3eEQvRbLGV/?= =?us-ascii?Q?CVm4/iIIqtqj7NnFRjrDE5ZMaZaFrXAgB1J3/XLdXo7BRBlrfDxiR1s34L9n?= =?us-ascii?Q?06lvPjU5VmkIRf+Pvf95JBaxS3EvCjlNnfzJBMs+aOFvFW6VqTxJNgn8OQaQ?= =?us-ascii?Q?YV/jIeCn/SJqXWqKCRsbcIFEy7fAW1cfqa06ZlBWtjGYtkj8jbbA5IgxEOD7?= =?us-ascii?Q?V/mpV3O3lTr/x5zFNxJGTjX14Luy2ZZEmz4r3NH7yxutF0MCxaG4sxC8QSdi?= =?us-ascii?Q?J1aJHA2EshnWWree7CrbCuI6eV11haBCpwmMOIsjmli2ArkS8adiHGTmbOdX?= =?us-ascii?Q?RTyfx72ChTHJppTs+UR8Na3jWzqCf0QctHBDukh8Xbr72GY6eM6bxGNlXMZH?= =?us-ascii?Q?UJUZoNNlZ0+bhre+fxfoqMgkZxvL0HgxFj8e3NL9uPodvhglQ7epfX/6JPHx?= =?us-ascii?Q?v1zimzrzKHj6gpv8S8sBcaJZ6ltw4jPixHTSB5ao6WAWD1qUnTzF9shEmh8x?= =?us-ascii?Q?xn/sZhIXBtrPaGRn5cjnjqTq7hE+GHXIoThDr/UXvI6BmgTvDYITXVS4Q0mX?= =?us-ascii?Q?xeijWZpt6FXfILoLJ9NJHsRDNgTj2wCMdLysgcvbzdJUn8RK8nJajaUDUkjn?= =?us-ascii?Q?SXwB4vFx7tzZPA8ythaZ2/2UhdrQDqJRDcpj5IDfAorPdDt3NfIz3Jc7eKXX?= =?us-ascii?Q?7hW7hcIiEXA62iRIstQ=3D?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: bc5e0f7c-c7ce-4c8f-3bf3-08d9ebd06f17 X-MS-Exchange-CrossTenant-AuthSource: MN2PR12MB4192.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Feb 2022 13:31:10.0560 (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: nk6yLW9kDkbw96y894KO+UMo1RycZnn1iSGq/QJe3/TbXVnZ8gP9zlfcs+B2OaIA X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5916 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 08, 2022 at 09:25:54AM +0800, Lu Baolu wrote: > The apply_resv_region callback in iommu_ops was introduced to reserve an > IOVA range in the given DMA domain when the IOMMU driver manages the IOVA > by itself. As all drivers converted to use dma-iommu in the core, there's > no driver using this anymore. Remove it to avoid dead code. > > Suggested-by: Robin Murphy > Signed-off-by: Lu Baolu > --- > include/linux/iommu.h | 4 ---- > drivers/iommu/iommu.c | 3 --- > 2 files changed, 7 deletions(-) Reviewed-by: Jason Gunthorpe Jason