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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 C0371C02183 for ; Tue, 14 Jan 2025 19:05:28 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4YXdqq2mN1z309h; Wed, 15 Jan 2025 06:05:27 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=fail smtp.remote-ip=198.175.65.15 ARC-Seal: i=2; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1736881527; cv=fail; b=mlJZ+vuj3CTxyfAUA1AOlY62DS45jlhi7eZMROcUyHBAhLKa0b1YI5H3FZJppVx28fCQq0a6YHaz1O5cGpyKqBJzmpDIQHfiRgd/qwxpQ+CXsq5DqGzvqkbmJc2rPDtDCuFdTxdQteShI6kSZBKXq4FHC2u9+IHU0uVmf1OO+hOZuYPSoBmm4xSh1aIvv8DvKtRUosEoLrzhQQgCSKGWf35Bg2+Ne+xkolTKNIA16A/Db70v6D82Pkpzsp/cnboTO+Xur+gQRlSZ6pKeJbN/6Oi5tUV4hADA3xXRea/05U0WMd3UJ3l7QM+TSVbKehIrbbc/yNXmVm0rr0LHjxCpsA== ARC-Message-Signature: i=2; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1736881527; c=relaxed/relaxed; bh=7V7nhTs2/DcjENjxuMrL/VjH32rJOKo1iudfcp3h9NM=; h=Date:From:To:CC:Subject:Message-ID:References:Content-Type: Content-Disposition:In-Reply-To:MIME-Version; b=Dx4FZsBpk0Q3gJ2s2v5jMXkubnc/yNqR8v0oOC6Rha5aKZcrLxGw9FpE2yKLF/Wpguzae+Y0iwq5n0bCMUNgPRczOP5FE7MFJReJNr6K+pCX+Axv7qgZ6Nk6FAnSG/VExZRUiLYQmN+RhVn+r9V9LQvraFQgkpoB8psen1/13GwBCAb4zfQ7wiF+bKhHL/zXqq2sjZNebNLj7fX9es2e4lqx/84fzgaBx3p1WuuaTUthxrEyARMUTMTkDYWklZuzu/gjlKWZjT7F/3IV1ZgC7yKtUIFKPhGuQxW3s4x81Z3hmNR6e7KA0Lpu6JwPZ8THQT/J4TOrAPxjXxtNmyZ3sA== ARC-Authentication-Results: i=2; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=intel.com; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=Cv03YpI3; dkim-atps=neutral; spf=pass (client-ip=198.175.65.15; helo=mgamail.intel.com; envelope-from=dan.j.williams@intel.com; receiver=lists.ozlabs.org) smtp.mailfrom=intel.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=Cv03YpI3; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=intel.com (client-ip=198.175.65.15; helo=mgamail.intel.com; envelope-from=dan.j.williams@intel.com; receiver=lists.ozlabs.org) Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4YXdqn6DZSz2yMF for ; Wed, 15 Jan 2025 06:05:24 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1736881526; x=1768417526; h=date:from:to:cc:subject:message-id:references: in-reply-to:mime-version; bh=BpDA5mU4L0PPNZzo0g4pNf/kJLFJ+/ntb2ma2NNkuA0=; b=Cv03YpI38OplXtL6WMg8w6PnFYHuUzAdDBIkerMvcF64Nwm/yuiCO1ls GJymu1oDq8897vRuglzTjMsp0USZfozPFS7n7CycE27zu+Nrwarfi2N71 3Q2xdtWJxHTejEQnvPVzBi3UEAdbtCYcm61N2FxEumzX8ZkEvv02WtdZK rULv9JDIYz9KX7D8VXkI32eS8BXNfmJj5t5aCXNFdyo5+KTiaVIai3e+W 3AeOEAY7oja0rcEZMnWNoJxHXn7cNQqOBxbibYHxccsOlia3j/9WxCH+c wifM7s3REeJxc+Q/1jb7k/MXueIMKgew4s7TRpC027wSvzXV6+sBhGdvV Q==; X-CSE-ConnectionGUID: 4+ry98UvRUazBC2c4gS35A== X-CSE-MsgGUID: Vc6EaUA9Sl2z8HFL0DQJUg== X-IronPort-AV: E=McAfee;i="6700,10204,11315"; a="40872922" X-IronPort-AV: E=Sophos;i="6.12,315,1728975600"; d="scan'208";a="40872922" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jan 2025 11:04:10 -0800 X-CSE-ConnectionGUID: IHadNigEQv6jB96c0tlPzw== X-CSE-MsgGUID: sLbsqhXvQgiZ2O6dMuZt6Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="108947757" Received: from orsmsx601.amr.corp.intel.com ([10.22.229.14]) by fmviesa003.fm.intel.com with ESMTP/TLS/AES256-GCM-SHA384; 14 Jan 2025 11:03:49 -0800 Received: from orsmsx601.amr.corp.intel.com (10.22.229.14) by ORSMSX601.amr.corp.intel.com (10.22.229.14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.44; Tue, 14 Jan 2025 11:03:41 -0800 Received: from orsedg603.ED.cps.intel.com (10.7.248.4) by orsmsx601.amr.corp.intel.com (10.22.229.14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.44 via Frontend Transport; Tue, 14 Jan 2025 11:03:41 -0800 Received: from NAM04-BN8-obe.outbound.protection.outlook.com (104.47.74.43) by edgegateway.intel.com (134.134.137.100) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.44; Tue, 14 Jan 2025 11:03:39 -0800 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=kGbnHAztHucjTe12A9XHRxrZYgIwIey4NY6Bqm5BuILQsP6iWRcdsOEub7g9cvljOb/UeDR8CeUEdeaBlZjES27Ig03jDWM10u3Mql44tes3uQGB67Xq1M2KR8TxL64QDq+Ha6obbnruZWNM2nvztkl5cuPITso0VhHDOB6w06mkTPgLsgKiaZWkjx70Z0TsUflLB6BI/jA2cncdml8NcMp3Vs+JRwsqYg4Xc0X10Vx4/eAZiO3RJx4H0bID/8Eb16l+zA6UJ7K5gFXyfWCcaQ6u1U6ZhbtlzlBmkhEoCb4GuNkuVHeJUouHeVbBwez1cKKg7n4b0jWHEuVZ1egCng== 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=7V7nhTs2/DcjENjxuMrL/VjH32rJOKo1iudfcp3h9NM=; b=XPi0WCFKv85Ch2ZCimUAdgtO7qpJuiTu4jnXc1Dq+/kYO+Ki3jKjD/eQG9h516gUGqlhERIjDRQjV/aa3zf7zJiXCuC15IBwFXwdCqFfNLFVx3uxRqa+GgA4gWw8K2s7uIKSJjWJNRckDYRatTP2o1XK05Jw9mff+9x7J202xNFT0q13mQGdDLPYLITzB0QM5GVfW7qjzWA5kl6VG76M0thzClTwwCsG7Ph6TYVsfQnNIQQLj5HhURGFr3FTsALg91DYlV8B+W0/0KjX0y4k3S+o9OJ8s0zVqigh2/HH2rWmm6mOablqa2vz46jnvL8/wIrvf498fGo6OoVc2csPBQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Received: from PH8PR11MB8107.namprd11.prod.outlook.com (2603:10b6:510:256::6) by PH7PR11MB7498.namprd11.prod.outlook.com (2603:10b6:510:276::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8356.12; Tue, 14 Jan 2025 19:03:36 +0000 Received: from PH8PR11MB8107.namprd11.prod.outlook.com ([fe80::6b05:74cf:a304:ecd8]) by PH8PR11MB8107.namprd11.prod.outlook.com ([fe80::6b05:74cf:a304:ecd8%5]) with mapi id 15.20.8356.010; Tue, 14 Jan 2025 19:03:36 +0000 Date: Tue, 14 Jan 2025 11:03:32 -0800 From: Dan Williams To: Alistair Popple , , , CC: , Alistair Popple , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v6 24/26] mm: Remove devmap related functions and page table bits Message-ID: <6786b5042faaf_20f329461@dwillia2-xfh.jf.intel.com.notmuch> References: <42a318bcbb65931958e52ce4b1334f3d012cbd6f.1736488799.git-series.apopple@nvidia.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <42a318bcbb65931958e52ce4b1334f3d012cbd6f.1736488799.git-series.apopple@nvidia.com> X-ClientProxiedBy: MW3PR06CA0023.namprd06.prod.outlook.com (2603:10b6:303:2a::28) To PH8PR11MB8107.namprd11.prod.outlook.com (2603:10b6:510:256::6) X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH8PR11MB8107:EE_|PH7PR11MB7498:EE_ X-MS-Office365-Filtering-Correlation-Id: 485f96f0-8827-4d03-df61-08dd34ce264b X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|7416014|1800799024|376014|7053199007; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?LT6FEb7V+IJQpITwnWrQ+H6dYvISB9/G/LOXF6Vh50UbvmBqlIpLJg5BSage?= =?us-ascii?Q?2o2V/Onsqo6PncDZAUjJqtJoYBfQ614bIyDJGoFBbCLUXa8KKNAR2Qt+4lla?= =?us-ascii?Q?f2jD2vind31400UNb3BMPLGewAr06T6hfUSQHh0KZpgiZpcjE6CfwKwng2kT?= =?us-ascii?Q?RD8mKIUjWaxPzyvxoiZLKUrkSicSoDiIKAQt/flQsIdZRiKZjyLyly/lrvGG?= =?us-ascii?Q?Pd7aw1Bzz4lY2xiMopHIyoGuuZvoIfnyvEZyJ5BUywnoJVjv2dHpZOH0FXcD?= =?us-ascii?Q?GhrEO4yLNriTJwGNSb6RUker/y6AvLS5ao8NGPycER/bsBOpJ4xDawdM0Qe3?= =?us-ascii?Q?lxVv9W7p56gdPWWMJQimyGYgIGQQcJxRH+JvAndBm4PHWph0FZHPwX9hy1kt?= =?us-ascii?Q?0ZNpSWtqoL39K/x/nKhCcNefuy5TOithZGSg9hEgvYdmQq7MzFgZvqCdz2fR?= =?us-ascii?Q?RVjepnPD/vZiQ99NCtWNSYajr9/XU/zM+8nxpfq3PZEeooywVZkSJiP7Dhxw?= =?us-ascii?Q?oCfsg/Ik26N2hwZtQRKCr7XpaMbWf/ANmQPXgYaLBOaOHP3INIfTLwf0guLR?= =?us-ascii?Q?ltlxM0UVXfdFEo0XZANNPz5SJD/KhPOVtvQyhawF4re5yiDA3BWMlHg553Qs?= =?us-ascii?Q?U0YgoJgM/SgptyEva/n4rXl43532xX9Q42W+pi59yWZVJzENjEsrIx/IXU1x?= =?us-ascii?Q?20TijyyRqaEWzDXnsiJgQN+tCgd/n//hdiNSE4kYnJrmpbgYhBhJRCxz+M7i?= =?us-ascii?Q?UI8/EddFFMIqNuyIbdrWDy44e9Zn4PB2HhvKgSJamzmZ99QivnQ3N8X557Et?= =?us-ascii?Q?/TqdTRpwOJTy/ihlKg0zWk9RieQg4Li/aH6Qd8hgeQS6PgeSEs48Mrd+W2r0?= =?us-ascii?Q?ANvbxTgOp9nNDWbTai0AI3UyTJfwG19IjdtWhxPWtVi3IH3LoubYwYYeCv0k?= =?us-ascii?Q?uQF4WEA6GQlXwph2BgRev/Jp7V5jhYxewA7eh2xdftcKYVKRg490DLTyBBZ9?= =?us-ascii?Q?w2Yz/zptsBoJQLwd7KUFuPCNqr3l8pT6ew/EDBrjfW4bSTJ1M7elpe6Wl5gI?= =?us-ascii?Q?LUWKOCewhCXD4Anlnz/7kyjYhTQvVRKeYsJkp12asTLz7fdTMoetOfDCbtu8?= =?us-ascii?Q?QrhBiVvHoGMfxWuqXNlXZY02/P8IoLL0d1ypRlJco4sr/mYrOGVE0+eEg5kB?= =?us-ascii?Q?7E7t69lih9JzxRCAHrJhpMASXaUND6Pa4Z1UaWUay66nYN8GadThLF31Cm+s?= =?us-ascii?Q?H71NF1Up457/vFGDbBPFIACO8Tmk1anehLdD5QMsMZaqqM7Tzm0ogFBXiLQJ?= =?us-ascii?Q?6IHI1wkEuHuX7WZ7nPC/M7eXx0Y8T69Z5PENc1iOOXhHESPq4fG5+MpMvfum?= =?us-ascii?Q?ZfVaKJnuGdXzPYvsBXKVVH+cweek?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PH8PR11MB8107.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(7416014)(1800799024)(376014)(7053199007);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?5QvotG+uk+5cELluKYFpXxqVNrqtPycJ6oVG/PhbfsUAfC2BhcheJYsmY1dT?= =?us-ascii?Q?v2DH7a2n71pVLstI7UNfskRzOah+3FFBT7zd1cI4YqlUR+lkjmmnzEclNHpP?= =?us-ascii?Q?ZZP19svUpmhLb3WJvtBMfwoSCiCIp/3oUC1Nl1JIrKzy1rLdKyDU2UthKFUM?= =?us-ascii?Q?HbNjcvn+UKbCq2Mi97yD5riU+70bA2xSX7IA/6gJm14SgLY5fkINW9hmkkEV?= =?us-ascii?Q?ig6NHZu6O64LFOp+NKmgrz9ULAKK6knoH1Hl3fHY99j4/BwQXymO8A2uCFHT?= =?us-ascii?Q?Ni0IFe+nxPh83MxJ/RjbDfDN5HS+O/2/57+mt9p/1sIJubrLjGIKSYqxzTJs?= =?us-ascii?Q?sg/TgGBNGlNXWvAdkqMREYJKdePrI8maAIvOKPK954rDrYKg3cb4GPVjjJgm?= =?us-ascii?Q?XHyYCBZrpauN0cRwnm1LQ/ilDk6xvTN30EpYiOxOUOXTdbO68FHb25F4E1wl?= =?us-ascii?Q?17pgs4zlBWv6vzRDLQJnApRcYVnEvtykc2X3yzigk2xigzwwPL53nEjZ2Pzf?= =?us-ascii?Q?2QEQwXHrR2uuS+/yi24+4TWfiBMwKSlcoRUUhOIiIGZQgoK9htNOcSpGYqHo?= =?us-ascii?Q?lC7fWneRMC6vHNPaRw23WX2LmldY+TSrCa707yyLvVUkQkyaFF3/8LCScstQ?= =?us-ascii?Q?8BD4H19KrMEDIqWNhj30k9dKl8/PcDaTqBDHIaJNeSlq8Ys4T82B888ZkLl/?= =?us-ascii?Q?qMyaXd4NLSH8oHcdpg142qqr/Qjv6PM4nqtZ+48u4KueKWP9RMOvDuPd+n3R?= =?us-ascii?Q?hMeZVC9u642wdXN9SsLcV/Np8Y8L8JJd5OMMl9TdHQUZ+R5aLXvgGPqywS06?= =?us-ascii?Q?0hfZKv/24Q/NCrfyCwLrS36HkD1gR1VRbHAtx7eRCFf/XhMNK7gsevcphhF+?= =?us-ascii?Q?KFq+5d1fjFTw/ARxTmMALIsE8bwyMLEO5X4rS7jnQ0/eZt7Q0+s7f33bCJF+?= =?us-ascii?Q?bwRQzJjGCqHZkW47uyI8awDWCnqsQJ5Wf103NlRLzYmGHzUt92OdKe5V1XDF?= =?us-ascii?Q?DciOthfrjXS7adUIs0U0nn8u6Cjp2hebvtCGydozFiUlw15txIBGApEvxD9p?= =?us-ascii?Q?aWaIBGH+g07GjPaxgN6lGALEdPgBWWFeVvrw5e3+BYQL52gH/KOLTd6Du2Vu?= =?us-ascii?Q?iMFmcJlLvqJYeEPP3Ghux/YlBvu0TbGlid8GYTKC9iFV1E9GjkDgBY9m2AY7?= =?us-ascii?Q?ht3Wh3PSibM9HdAN2e2LkyMYPN9jzDhBO0jl+77FiVjqrLLV/zOM2HB7+fjm?= =?us-ascii?Q?Lfw3GsUhT/dnxtOahiwVv0vHeSelNGOLTchrEm4ZS1SIJQ6ixsZxVVDLlHbx?= =?us-ascii?Q?U1FRUfN3ZfNia0aSQ/ZMUn+aRDc6lvl5MEAwaCb2pVvp4XR5Ad5IDMu5aY1y?= =?us-ascii?Q?z8ce503XfUR2gNRITaiTZZadoCGiZeeCXyU4CDGnXYZHlPClRiUnmGKfEoBE?= =?us-ascii?Q?bJ+Hy0wzZN52gammQf4gA5g1i4uAYpVUxuwFOrNq5DuYlO+Ua730bjh/BBjJ?= =?us-ascii?Q?2+w4ROtEsJXD92+gni13iFPhlEplR7GyBJ/ekZ3tzmUm0h0om8+JpGkFoX55?= =?us-ascii?Q?uq4YV7inHvnledb1QG9t5ltF/SOcT7b9dlmY5f3TGPx1hnh8XJi/V8YVW4Yd?= =?us-ascii?Q?Xw=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: 485f96f0-8827-4d03-df61-08dd34ce264b X-MS-Exchange-CrossTenant-AuthSource: PH8PR11MB8107.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Jan 2025 19:03:36.8125 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: +4gQ/mdMWOSFyyJiXIWA61+kggst/stmMmqObVTSu+/NUgGTfVew0sR9IrZJsIFth93d3WOFoLre6JzD8TKz5M67VhGqEK4/CVTBHG8A4MU= X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR11MB7498 X-OriginatorOrg: intel.com Alistair Popple wrote: > Now that DAX and all other reference counts to ZONE_DEVICE pages are > managed normally there is no need for the special devmap PTE/PMD/PUD > page table bits. So drop all references to these, freeing up a > software defined page table bit on architectures supporting it. > > Signed-off-by: Alistair Popple > Acked-by: Will Deacon # arm64 Hooray! Looks good to me modulo breaking up the previous patch. Reviewed-by: Dan Williams