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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 7D8C8C3ABA5 for ; Tue, 29 Apr 2025 20:55:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:CC:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=5r3woOPXDalVu4PsqVoHXSHDzj8C57E2cFopfWiB+LE=; b=nU7bu6ysJgFLQH+JUFlT9Oof+W raGdRsKf5xmqtC+QU/aHjNpDu4ozH9Un6ELGtLTQADkENATGVPoZIP4/DZR9Nv++jTilMsuGzWpGR KvUrG69DJDAaZtatAWX/elxom5/ZS2I9wmdWcFy/ub/Pr/3AZkofHdZkG4dEKBPVtzaWqe3ND7lHF MlOKF1YDWNAS3jFxhuhVs1JrPWmFu4OygxAovqOhTJsnFnH83oOnYMNP33+vp0xNX0TTbNYMMiznF j2Uh048EpxKVRd9GGsuj/QV2xKV2F7YDrhElMW77C/DGaSlUeVansB7yx0bPagNX85YGLpGddsEDd amHOH+bg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u9rz9-0000000Anci-16Ud; Tue, 29 Apr 2025 20:55:23 +0000 Received: from mail-bn1nam02on20616.outbound.protection.outlook.com ([2a01:111:f403:2407::616] helo=NAM02-BN1-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u9rjn-0000000AlvP-464F for linux-arm-kernel@lists.infradead.org; Tue, 29 Apr 2025 20:39:33 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=CUqaE53g2/c/lAMj20WB1aHZkgB6t7UOVfymDTwhToJKpw75Ye49E9o56IWgJgspqWGEPbD5NiUyrl18HA3mdIYeHpXBhCLfbJqlRa4ME96RNV96PjwX0reyY/CBEz2GNcSYjrst4fXyO4daBTt5rru/uzyPZY3wW6M7DGU9rzZx1rqC119bBhfPg0huypcVLHw6YEmmiUKnQLLRr2juMKYs4hHqihUZBkT7jEZqR2vnBoNQGpr5JGnJ/JrTGyrSZAi1G6gunPxjHptnN9IwzcojWuWRUJQWHxiGFOrOc9azPQcJJKi4dg8SMTLN2OurTIy3v8Hp0oGhp2mn5IuYVg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=5r3woOPXDalVu4PsqVoHXSHDzj8C57E2cFopfWiB+LE=; b=tAWLQnl3JOjb3A3ryOeQEquDKodU6XPnvAoVg5jXjkxpojwcBAF7AsEufTJrjDDsWoZwQl/ZQGAaOfMNEmTMgRSl//Un1r8Lxh732oOn5TnQ4nKtG6GtGjJROLdhTAXXyWS1yCmtVwGe9ytDWeO8oymxat4UfSWNFTjIrbdlMVyK6qB8HFQL7ZiqVlTCC9qck4nrze1o477KkP4zzgDTqO/YuVSH0fFdc9an69mf/MRZJCGa5IeT7FYuoBtuNsleTgOoqZm6hBPb4J+TWSE4JBDpGWHCPHcILAzdkbglUrStxRPOceEtML28MUmAETXcUj6ZQD8KsCrsvsNF0fGOCQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.118.233) smtp.rcpttodomain=google.com smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none (0) 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=5r3woOPXDalVu4PsqVoHXSHDzj8C57E2cFopfWiB+LE=; b=pynHXuf0m0w7xy6X/gdQY/yWwarip8PccwODKhv33OQ3yctilpafpznmZTnHdVpylbgIyooVDDkUJ4Q0RERBQL47u5lEBqM+CVzIJD41mjydMwp2ZUWHX1n/nJiSJfon3/jSNTnPJ/5b+Mv2uiU4bMBwnTgo8NV0Iq6dJtepu+UKEiGQdLqTCqsd/+l3BXiz4xI+slFz1R6QNQuFtG/IZClscLjNf5OUNL6zh0E/fFUsXPVJ1iqdE0Ape5HTsW6q/8NM9X3d7Uj3DD/uUcjlSd68cl9XcT3rIFNStMwu31D5i7FBbnZX451WCAUErisirde1fKYO8bbfej9Gd5Dl5g== Received: from MW4PR03CA0010.namprd03.prod.outlook.com (2603:10b6:303:8f::15) by IA0PR12MB9011.namprd12.prod.outlook.com (2603:10b6:208:488::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8699.19; Tue, 29 Apr 2025 20:39:23 +0000 Received: from SJ1PEPF000023D1.namprd02.prod.outlook.com (2603:10b6:303:8f:cafe::6d) by MW4PR03CA0010.outlook.office365.com (2603:10b6:303:8f::15) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.8655.35 via Frontend Transport; Tue, 29 Apr 2025 20:39:22 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.118.233) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.118.233 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.118.233; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.118.233) by SJ1PEPF000023D1.mail.protection.outlook.com (10.167.244.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8699.20 via Frontend Transport; Tue, 29 Apr 2025 20:39:22 +0000 Received: from drhqmail202.nvidia.com (10.126.190.181) by mail.nvidia.com (10.127.129.6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.4; Tue, 29 Apr 2025 13:39:13 -0700 Received: from drhqmail202.nvidia.com (10.126.190.181) by drhqmail202.nvidia.com (10.126.190.181) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.14; Tue, 29 Apr 2025 13:39:13 -0700 Received: from Asurada-Nvidia (10.127.8.14) by mail.nvidia.com (10.126.190.181) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.14 via Frontend Transport; Tue, 29 Apr 2025 13:39:11 -0700 Date: Tue, 29 Apr 2025 13:39:09 -0700 From: Nicolin Chen To: Pranjal Shrivastava CC: , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v2 13/22] iommufd: Add mmap interface Message-ID: References: <7be26560c604b0cbc2fd218997b97a47e4ed11ff.1745646960.git.nicolinc@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023D1:EE_|IA0PR12MB9011:EE_ X-MS-Office365-Filtering-Correlation-Id: b8b09f0d-63db-402f-13e8-08dd875dec86 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|82310400026|7416014|376014|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?ALelWJad3ruw0i5Jsx2taIuVlZyZcmaYAQjyT8CtakB+05jEblB3xT7BBq4V?= =?us-ascii?Q?gzauX9tK3lLXzrNFU1k6uQvtpTRMK37O8VasN7TW5xtLBW+fVTW+oPVWfItb?= =?us-ascii?Q?SjM1HZKb7lh/JqZSdzvX5UoN8+8qtH/qY8BB7wRJgo9J8r5WCNNif1XBj0Pk?= =?us-ascii?Q?Uoqa4aTfgQpf461ZSa9bawJO44N1q/JfPWvAb48CYQlqzcdpLamzfb1l8MZ9?= =?us-ascii?Q?GigMBxoa8cAguoTGxFnNIJW7C/s0UXViEcIQhAtpvBylFOqdbuHN/NMKefW3?= =?us-ascii?Q?cWl0qupembBbT01M2TUZBDB0jriPGDwJ74BbNfSUlD7t+x30ommE4F2gA89+?= =?us-ascii?Q?5uZA9LEylX+8htv4bKpt8L42E5Q/0kMyuJ6Fgfme+Ldxb6k6YxqP7O+lEvyH?= =?us-ascii?Q?y5Cb8V0aRhYvqC7rlyYY4ckgYRwjNEIuM4gWqWIPLBIExUwpT4EXLhQylHpH?= =?us-ascii?Q?JlNID7heWEgxe+LT8OM2J6w0iYR4kFlzlhm8AyJU4AsSeSzpo9wTIMMQ1deR?= =?us-ascii?Q?yrw8JL35xjwMX/IXu7r/X+VYZNvhbB8RY32qdk7ifKwEaRfZz4KNpDMM08xi?= =?us-ascii?Q?WfbYa3CHD6A5jq2shvvIPzXF8yXRmCY+H3QTfX8ngMHlHG+MeTG1pUw09hqt?= =?us-ascii?Q?HXBcn3/X99rxJTa27mgh1HhvrF4Nciw2aoGLahKcRktOiKBiIf730ZjO1ryu?= =?us-ascii?Q?Tu9/vxBiaJNqx3oTRRtnmZTwuo2JCMeRzgiPnr1g/9L8vRhAtHKOue2N6OCp?= =?us-ascii?Q?aN+IO3DoAEt2jVL+bixhnvT09P0Oqc/lTUpviNldCTdVPYTSoXC7DMD8X1aj?= =?us-ascii?Q?Xgo6wjNq0sIYY5W+tVG8T4ObTSGq+3sHuWbY0AlZRrAS5D1R0BdKSL6rZMjo?= =?us-ascii?Q?rq2Vp4fDZp3x2iBFfC/CeEEj+w/T3KGfhnlA7pBdABuk94FORHhYWXG0TGUB?= =?us-ascii?Q?g2zkUcYVYiDytOTaUyQcBy/kSe8vQ25pc25r+bHx/S2U+xKy6CrDwfg/GfQ6?= =?us-ascii?Q?46icCrMBFQBgrX38wI5rIeqOrSWQ65q1cPxRZwa5rLY9W4eis538wZUYe030?= =?us-ascii?Q?CjC9AYRe/MbUKadqWW/6rD11CzgmCT7cn0h5OlKW++aSFNZ3hdY9Igre6FY2?= =?us-ascii?Q?FiVWreGyliH7P7vK2MAuf0S3csU8MiuvNT9xAFQPXbaCSpbpBE0N8YshA6t2?= =?us-ascii?Q?AdPAhDKPs5sn+T4kCPKlxCC5JLVbyTAw66bmv21Xu1wK/I/6NxT/tafORULt?= =?us-ascii?Q?H88iZfK4WWkOTLvVm8EODhn46OoReOqKF7VHxLUJ8p7xZAYiHyLFl9NPPeeN?= =?us-ascii?Q?MMc/sIBGRYEHv3bK0NGmJLRQXEA+27pX3UUwonmb4PwEyY/amgb5mWCO/JGj?= =?us-ascii?Q?dAUlR1oyudXxjH6vETm503ikysx6Sb1S9znlzKfu1SAg86ydDDYzuHuAY//j?= =?us-ascii?Q?J17URUhpcQQDURIkj6haT0zrA9rXhGAuIRK8o0VP4PMoRxaRm8/Xr5XTNg82?= =?us-ascii?Q?k7XNO/2+QglUL9c6fJ7zO5TtpZQa1nXIAH4x?= X-Forefront-Antispam-Report: CIP:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230040)(36860700013)(82310400026)(7416014)(376014)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Apr 2025 20:39:22.6084 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b8b09f0d-63db-402f-13e8-08dd875dec86 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000023D1.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB9011 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250429_133932_008894_B12649E1 X-CRM114-Status: GOOD ( 13.36 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Apr 29, 2025 at 08:34:56PM +0000, Pranjal Shrivastava wrote: > On Tue, Apr 29, 2025 at 08:24:33PM +0000, Pranjal Shrivastava wrote: > > On Fri, Apr 25, 2025 at 10:58:08PM -0700, Nicolin Chen wrote: > > > + struct iommufd_mmap *immap; > > > + int rc; > > > + > > > + if (WARN_ON_ONCE(!immap_id)) > > > + return -EINVAL; > > > + if (base & ~PAGE_MASK) > > > + return -EINVAL; > > > + if (!size || size & ~PAGE_MASK) > > > + return -EINVAL; > > > + > > > + immap = kzalloc(sizeof(*immap), GFP_KERNEL); > > > + if (!immap) > > > + return -ENOMEM; > > > + immap->pfn_start = base >> PAGE_SHIFT; > > > + immap->pfn_end = immap->pfn_start + (size >> PAGE_SHIFT) - 1; > > > + > > > + rc = mtree_alloc_range(&ictx->mt_mmap, immap_id, immap, sizeof(immap), > > > > I believe this should be sizeof(*immap) ? > > Ugh, Sorry, shouldn't this be size >> PAGE_SHIFT (num_indices to alloc) ? mtree_load() returns a "struct iommufd_map *" pointer. Nicolin