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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26758C369AB for ; Thu, 24 Apr 2025 12:54:21 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9BB976B009D; Thu, 24 Apr 2025 08:54:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 942C96B00B7; Thu, 24 Apr 2025 08:54:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 796126B00B8; Thu, 24 Apr 2025 08:54:19 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 57E626B009D for ; Thu, 24 Apr 2025 08:54:19 -0400 (EDT) Received: from smtpin22.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id D59EBC02DF for ; Thu, 24 Apr 2025 12:54:19 +0000 (UTC) X-FDA: 83368930638.22.AB78186 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (mail-bn8nam12on2086.outbound.protection.outlook.com [40.107.237.86]) by imf20.hostedemail.com (Postfix) with ESMTP id 0A2611C0007 for ; Thu, 24 Apr 2025 12:54:16 +0000 (UTC) Authentication-Results: imf20.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b=vKeWTHR1; dmarc=pass (policy=quarantine) header.from=amd.com; spf=pass (imf20.hostedemail.com: domain of bharata@amd.com designates 40.107.237.86 as permitted sender) smtp.mailfrom=bharata@amd.com; arc=pass ("microsoft.com:s=arcselector10001:i=1") ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1745499257; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=dFBqEk4rAI6HLoIvzpRUEflnH7Xvf4rkazPXM9R64lI=; b=uaaUPaJa9FdmTegzLhC9xCivDJAXCz8uYHj5kOs1gyPiOE3G+kcvBN54JFDM5YE6PDJvWb 3t+zdwWYsrfCmYlUAIUOCvGIwD+jTfxR+3Tzny9jcW5o28HWSb14ItQ58zNVSziiqESddl d3MOENx4Wy9GYk4/b3zPUAOT3NcBXQw= ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1745499257; a=rsa-sha256; cv=pass; b=mbOp5Fq7NnsV2NkQrEl+oVTKBeresgyDcqn23RQ740MukhR2FQh4tJY0fdmbat+75MU1my 9s876AZEbwZl4e/nG1KNF0R1nObsigDmyWPJh3B3mYMd5kv+N1La2pYPVNZFPSqCveGvnO XwFzzNhx1eV7v7XFnf44riBb3puWfMY= ARC-Authentication-Results: i=2; imf20.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b=vKeWTHR1; dmarc=pass (policy=quarantine) header.from=amd.com; spf=pass (imf20.hostedemail.com: domain of bharata@amd.com designates 40.107.237.86 as permitted sender) smtp.mailfrom=bharata@amd.com; arc=pass ("microsoft.com:s=arcselector10001:i=1") ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=DcgDxtRDcoqvlAYLzGyaIsc0JFGsirIFG4DYuwX3ANYwDwOdyjiJ1PNCs1J2368X1XV9zsWYDovVrb9D560uPhUopSTViSMLUJFBYCj2iXjHTpicUnxhK/tCMyHk6CG2qX0qfy+vr/bnjAttS6ia2ogjfO8WWvsxJePls/f/Ykia3erWb+fOa8t0YzRoxyTt5zhKjwK5DmhUWur4okzvbRy7ZfuxbJeqnxENP8rpRYOhvgZ6rJ2rWcuh05BY2h10bxqgIBdaXVX3drI2kS6GMv0PYYUBTTcHnp9SbMyDoLVcEf6457AXLI/UtpvMK4XrKvohZD7HwPzBTNF8A8Gq/A== 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=dFBqEk4rAI6HLoIvzpRUEflnH7Xvf4rkazPXM9R64lI=; b=JXF8wBPCw6VSH8wZ4lhI34sLh64WVst3iNk9w/Dj4a7S9GbzAgpdqMS6ohCY35BZzi+9eNXUnz6Z9m9YS2IqU15WtNyWKZiyss0FtxPkCBaKPQES3R/42/ufIdDCJrZzttsmigTdi6nqNMVUXE/stm3GWJHdI4ww5IJ1kKt1HCGEQdHgI1gglsL0uqk3zEDYP069JHe7yMshYl8DSrkQ0e3UxLmwgwdRbTMYyR6VbE9tPXPdwrlaB79ojSoFGCAhYGSR+RsPTf/Kn5jKhddiK4VeM6D2/eVJeFn5XgdcMSsr79enC2l1v8ioA5/JEQ6ggpJB54Pn6xPovRUn8tXJIg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=dFBqEk4rAI6HLoIvzpRUEflnH7Xvf4rkazPXM9R64lI=; b=vKeWTHR14juJi6KGNA1Hfi1GvyYUdJsvZ5WdRl8OP9aN5T2f0NlI+xAgRZQ7c+f8er5sFiCym8GmcPOjxRVeS7AHt7rCVR18PkwHK5XWCNiR9hn9D1WEcFXCe2Y46j9Z8HxUtITHdA2Wv6nf06jJneqFPfhgFH4l8hPzFcm6aFg= Received: from IA1PR12MB6434.namprd12.prod.outlook.com (2603:10b6:208:3ae::10) by MN0PR12MB6055.namprd12.prod.outlook.com (2603:10b6:208:3cd::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8678.23; Thu, 24 Apr 2025 12:54:14 +0000 Received: from IA1PR12MB6434.namprd12.prod.outlook.com ([fe80::dbf7:e40c:4ae9:8134]) by IA1PR12MB6434.namprd12.prod.outlook.com ([fe80::dbf7:e40c:4ae9:8134%3]) with mapi id 15.20.8655.033; Thu, 24 Apr 2025 12:54:14 +0000 Message-ID: Date: Thu, 24 Apr 2025 18:24:06 +0530 User-Agent: Mozilla Thunderbird Subject: Re: AMD GPU driver load hitting BUG_ON in sync_global_pgds_l5() To: Dave Hansen , linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Dave Hansen , luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, nikunj@amd.com, Balbir Singh , kees@kernel.org, alexander.deucher@amd.com References: <19353ca2-11f3-4718-b602-d898ff05ba87@intel.com> <83cf7fc7-23e0-46f5-916b-5341a0ab9599@amd.com> <2cba2ae9-e29d-4eab-a77a-678be0b09a58@intel.com> Content-Language: en-US From: Bharata B Rao In-Reply-To: <2cba2ae9-e29d-4eab-a77a-678be0b09a58@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: PN4PR01CA0031.INDPRD01.PROD.OUTLOOK.COM (2603:1096:c01:273::13) To IA1PR12MB6434.namprd12.prod.outlook.com (2603:10b6:208:3ae::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: IA1PR12MB6434:EE_|MN0PR12MB6055:EE_ X-MS-Office365-Filtering-Correlation-Id: 5792cc52-ef0a-4f45-491c-08dd832f1dcf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|7416014|376014|1800799024; X-Microsoft-Antispam-Message-Info: =?utf-8?B?Wi9sMGoyN01ZblFlbnl1MEgyc25FeWpwUTZsSm1ldlI3OThYd1NHVEYvaWpZ?= =?utf-8?B?UkYzT3hpVjgySWpGS0Nna0dLVUdob3RSbWF2VEtCTFdQZFNXN2pnSS9XcWtD?= =?utf-8?B?N0lpbk9XM2NweWE4blFtYzljMmdtSVp4VUc1TjJKcGdPYlZ0UFpqb0Ryck53?= =?utf-8?B?ZVVEZXR2eWU3TG53SVczYStyeWk4VndpWHg0eGYyWlFsZTcwQi9iK25zNzlo?= =?utf-8?B?dnNjVVVqazNNSUdIUVRyMHFUaUpPVnVaNmxrOXlJc2tjZjQxcndCbStmQzF5?= =?utf-8?B?U3ovemptdXg1di9Wc1VhOERzNERNZm9OcjNwbDBYWFIvdnVDYTBrYnpES2VI?= =?utf-8?B?SmYyalNOWFg3azFKNGhPaEQxeFA4cVV4T2VXVDdIaEJhVVZ5bUdTNEx5MkNK?= =?utf-8?B?Q1JJVXZVYWhVcW1oMDZyTUk4cEtEcG1Sa2c5K1o1UTA2ZFR2MkN6T3ZuZnd4?= =?utf-8?B?L3hxWGpnZFczR1FSUk92ZVZ1cGV1SXpWYjhnMzVRYTh3NTBJU2o1RXhkMDJ2?= =?utf-8?B?cGpBblNNZHRncG5pZVQvLzBXbWVBVjdwQWFCcjRZYnRkUStqaTcrSHhmTWZB?= =?utf-8?B?UDhMU0IvZU81NWU4aGJtcGk3VFVFaUI1TFQrcDhyczB5R3I3dGxuK1ExVyta?= =?utf-8?B?WkIySUxxZ0krTldEL0dDcVk4NzVCQk41KzB1SklDUlUvMjFINkJiR0xTZjd1?= =?utf-8?B?eGlUR1FId1o4L2lIcnhyNG5KbDNGSEJFeEU5WXFiNjZnd3JVSmZCaVZWQWlo?= =?utf-8?B?Ymc3OEM0MXorcE9uNVJ6b2thcHp3cC9GUVFLbHJWSEZub3BTekJxZndjd1lI?= =?utf-8?B?Mi9rbTNlZTlvQjFLd1J4Y0MzRDJmQkpDZmhVTkttbngreDlFei9CWWQ3Zmox?= =?utf-8?B?M01VWVNBeFdBNEk3dSs0NGVIeDZCRElIWE5ZSXFCcFZDdnEyYTVIMng0MU4w?= =?utf-8?B?V1hMcjFDRnVnMWl4YWFORDdjWExDWmZ5QkdIWERMRlhHbzE2ZUJibFRSOUd3?= =?utf-8?B?MXVNQS9mL3M3ZEtBQkduRmxIYzJwL3ZCQ25XVFkzUyt2OVEyam5XaSt0RkpI?= =?utf-8?B?bHN5Z2g5dmhwc1BHVnpZNCt3dGhJMEV4YmpWcjA2QldSWDNYQTBjN2JXK1NS?= =?utf-8?B?Q2V1aGdhSnBabW4yS2RpZlJvL1RXWXM3WHpZais1dmlTeWVWSEg0QkZNdFVo?= =?utf-8?B?U0ZURG1OaVRMOUtRN0J0bWo5RS82OHlJNTJFRmJrSDdPc2thZ1dKTkZEaEJU?= =?utf-8?B?bFlmcE1QQzVzakltWkRvWFA4Q3FoVU9IUTU0SlpUMm1Rb0pIMEZpcjB1Q3RK?= =?utf-8?B?S0R3bGpYaUxObVV1QlFOaW1EWWhUMElDazlIK2J1dmY5UFU3Y2tLTWtDUnBo?= =?utf-8?B?UUFDTmZyMmdvYkNWZ0ZleFZCSFdSNDl2Y295M3R2V2VWSjMySjVnenBsNXBw?= =?utf-8?B?TG13RDBVS04rd2dsbTFhazRhWHRSWXlRNFhjeHlBYWI5bVQ4ZU1lR2pqT3Rm?= =?utf-8?B?WVZGYUFObVVVMWFuOHh5Rjl3ekZTREtIeTA5bXNPZmFRYmhibkNuVHF2VExp?= =?utf-8?B?WlE3WjZ3QW92NkxhdnhCcGJLZ2xFSmxUN1BQVUpDRHJkTGMrYitUSlhFVmR1?= =?utf-8?B?UjlRNGxkUjNvWEt2OWVzdkFiYTVZTWt1dmFaNzNaSzRQTHdhY3dyd2ovS3Qy?= =?utf-8?B?OXpIMnJ0aWw2QU5lSmk0dWlrQVVMWmtMQnZjZkljOGtwQ0ZDZmd1cHFHejdj?= =?utf-8?B?eVRSUmQ0V3BQdzNPRFVDbUZQclJTYWtuRmt3MzRWRi8ra3NVVXNzcVdJME9o?= =?utf-8?B?Sk5nbTRmcFNIb3JobTREcnYwQk13TEkrTmpGajlwS2NWa2c1NEtBbkRLZjd0?= =?utf-8?B?UVJwQlZNR0NQa0NzNWJmQXFxQVdENHJycUNONTh2SEsvYzRJdG5lNnMvcDhu?= =?utf-8?Q?/dy9oFkZbLo=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:IA1PR12MB6434.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(7416014)(376014)(1800799024);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?dnNSak12QkFyamxxY3ZSeDRxZS9EK3ovUjlFaEhDRmhOM0RURzIyVGxEblk3?= =?utf-8?B?ZzdncEQrajlzNzVrWVQxNG52ZGNOcnVuaWZDS1d5SjR2aFZtQjJnQ0hpNEpt?= =?utf-8?B?cU41MVJUVlVyNjdxUWgyc1IyZzZEVFdJMWNpTi9sSkhjMWNvNHdzMkpzcjNP?= =?utf-8?B?cmg0WmE3RlMxbCtyQWE2ZnBRWmFNakhic1VnSjNuOWpTNWZpMmtlK2N5VmdR?= =?utf-8?B?cGdSbHliZEl6bEErbG5hZHVjbzE0enpSeWVXNk9mV2xKZElZcjdCZmZKWkZH?= =?utf-8?B?YVYrV3VtNUYyYkF6TW5USkZjS01vcTJpM1VGZExQUXN2R0RleGhPNG95bThr?= =?utf-8?B?MWtqY21iWDUraldsNkpmdmF5bWdWSzJKNXdORXl6VEp3Q1FnYnU4bmZTYXIz?= =?utf-8?B?TUQzZUQ3cThXd3JiZk5wR0R5cCtnUi9oa2Q4MDNXc203eSs3d2d5dUkybjE3?= =?utf-8?B?VDF4WmJjeTd2dkozSTUwa1VOWlA0L3h0TXVTTldFbmxXVkJ1V3B3VUk3K0pK?= =?utf-8?B?MWQ5L0ljR3MzY0tUblVMVmVIdW92SERmWHR2NjRtcmNQTjRqKzlGeXFxODBH?= =?utf-8?B?VFZuM0dJcFkvdTNwRHVqQWpYTVNGdDd0czI1RlhkcjJ0cGVicXZWVTV3bCtC?= =?utf-8?B?YzcxMDZSRlhVcDBSNVBUZGI4WTUwVS9uSTJHTktlY1RzWG54T2psaWVza0pD?= =?utf-8?B?b2tKb2NicUxCSW5JQW9WRmZmT09XMzQ4eHNSbVd4Nys2clg1SkU5YkJ5bnZa?= =?utf-8?B?U3VQeEJReXJSVTNCZnQxbDgvMzRKVUhHaVJGMko1MkI1ampVdFpnN2lyWWRn?= =?utf-8?B?MlAvZnI3WUF4ZDB2ZHo0WHdhWEo4RFBCTDVYRUdCSjloaDMvRG4yS0o0WDQr?= =?utf-8?B?blc2Ujc5dUpydk5rbVhXMXRYYzg0RnZ2czBqWnhseDgwQnFXa1NJa3JXQjB5?= =?utf-8?B?VnlpSGRSeUdJN3JFbCtvMWFtVG5GYTl6TzhkaEtEN045YXdFZVZFdlRPeXJj?= =?utf-8?B?UWZJTGJ5ZFB2bDk4N01iZm9yUkoreERwWnJwc1BJenJOUXlXZnN3eEhCcmk4?= =?utf-8?B?QnJ1enp4OStBSTZoMVZ1amJicDA4bGZVMFk5VkwwVEJsZzA5TTlVYTlINUFR?= =?utf-8?B?b3lJQnNMZmhqd2JzMVhyc3h0RlpYRy8zV01XWGNaNTBjUlpMajFsYW9oQk5P?= =?utf-8?B?anBoTU1xK3huWDEvTWZzL1p4dWVmbmVyWUhNODlCeEdjeStEbmNjOCtyMndV?= =?utf-8?B?VWV6eUtlNzNuZlpaVk5HZ2xDanA3cGhTa25Temx6U1lhSzVKWGhOOG9rUzM4?= =?utf-8?B?aS9NOVVLK0VQZlEwWkZ0MDk1OThjY1ptN1d2R3pCY05pQVpKdWpxQ3czYnNo?= =?utf-8?B?Q2M5TTdTLzRXZ3hGeXdqL3VoMFE1cXJZYTZRUzNyUEdQS2hKZ01JRmp3cVVR?= =?utf-8?B?Q2xxdTk5MUdCUnY1NGlvNHhHYU55eVNPVWpmaHNuc0p4NnJabWVLR1lBMUN3?= =?utf-8?B?b0xGNXJYMjJPbVFPTXJoWmVDam5WbzU0My8yVm4xS01VOEFYVzY1a1llNm9M?= =?utf-8?B?b1ZtNWNJY0RBdkxuS2ViL1YycDAyOUtHMEVMNk1QS29ieER2T2cyNExIYWlx?= =?utf-8?B?NEZJUnlUaDIyNTRXdlpqVThsSXF5QTBNTmo4V3hIelp6VGthaVc3NWdQTEhs?= =?utf-8?B?S3BONzVja1hzdkNvZExlak9zMi8wbzRkR2c4RGxhcHJHU3ZTeWtodWs1MlNJ?= =?utf-8?B?bHdIRHRYK1hGb0k3alFMN0tCZDdLeDJFV25XYkVubllvUFVadGhVV0IzK0lB?= =?utf-8?B?Vmt6Y29pazRlMEFuSlBQb0tvVjV6VUlKVmgzVkZtQThBZDRZb1ZkYW0yd240?= =?utf-8?B?WXdNa2JiaEdYSFhyVk03WTVEZytuZUdPaGRBSFRjcjFYVXFQTDhnYXFjcFFu?= =?utf-8?B?SnZDZGhVQWUyYnNKay9GWlVCbXc2OFVpS2ZqYVdwaFRSMzJXOG8vWXVFejdp?= =?utf-8?B?Y3FOWmlwQWJGT25xL2NOdmJoTVZxQ2JrdGxVVGRQTUVJWGlqWDZLem85L1dB?= =?utf-8?B?ZllsOGlGR1l0cGJzTmR4S1grcWwyS0dsRGhiUmNXbmVmdXM4elZWNUFpWWZn?= =?utf-8?Q?LSclLNAwVLDbhKkPN2dOq+HfL?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5792cc52-ef0a-4f45-491c-08dd832f1dcf X-MS-Exchange-CrossTenant-AuthSource: IA1PR12MB6434.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Apr 2025 12:54:14.6725 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 7maSgWFoyiC2kYMVCBFklSWOcid8TNthDdLbJWP15xpcbY+b0+QDYTl3lwRdVBDhQUM6jNyN/bPuHiTldV5xWA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB6055 X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 0A2611C0007 X-Rspam-User: X-Stat-Signature: r44zgig1t3tmchczpanaui1jdopg59b6 X-HE-Tag: 1745499256-310874 X-HE-Meta: U2FsdGVkX1/NWQdp+JQzcPE3y/6I+M/mAD+NNvJw0xphpAWV5N+/WLy40w70NeEZ93ouDyrl/75bpor3yvoAsa6br1/SgitLdZYevLaV5RlntUzi13wNZqOfgptk3JKtR1rV4V5Yx6TTocfuOph/tElYeled3/TVxr1El+IVA6izO7zBPxj1kJYUdPcYJdVZejokjrJ85Uf0u1yZ9q025Tf6nw5HRwG7g+PF/MC323H8bcRMJxtthpN7QfBBs9cKL1QLVq9mT7/5WilxJQNICcmXIezkKUw0fzQTwgTo2hw078C2s4sg3BDUPbKVzTS5OnDeN1twlNPVpFDdzzMBD/w+cCuwGPgWqgkDUpurvx7ypIe2V0+YsFokYlaBWgA9wlOFwR4LVxf58EkPrIIjQ5ZFldu7WeuFUlu3PJGBI8Jc3ii1gAN4Oi4S0n4lBjAGlPN/u/mR2qMxVdxUtGU3xvzat5z6GTlQUi5gD4cZfh8ooLgRlAIEdku+5yUyjQMHyeXIMSicHw77Fr9IJWQomvvCJZSY6g2xA6zi+q5wi9SeFp6khIGZepp0vPlcnpy6S6e5KqJnSRIKCqh7cw9tvpljtNEbFeJHkmG2QnrNuIAFsDWM6pdG1O9g5Dy3WZnL2FFFdp/ZDv+BDWAT+LZDvg0rrf5TDYpGj5Tk2egnt5o5h560Bi4M7pcCOOjEdYwACAF197bHf6+A8zJL+CNbxzaGZcJlT/tjyvWTFU+qCAlKwG1AH7F5mlutghGSxxq3Vuc6jsAhDLnEIl9YcYkmjfYbh2zmQn+xlTQI4eWQjwzwbb0VTLxoFcCUesdnCiA6FG3GDyqqBYc3vTUQKxZ5jpTSm39w3xOcRXo2iA4lHFtcaesbBKkJ7dWGHDawy5TsYoSlewlzKYWd9h73CCe0Q3WmXqO7YbNYlaLFhhoC8rhMqQ+08UVj1OHJKnngOGM/IZSKyXYYDlbHfKtR+tN dacKNqSc VQhSPrJNshsHQxCMd2w2+9daNtSrU0LWD+/85wyH5EaGjxXxD9KYneBSzpeG0WA8bdM9rBOSJYgLKJXc0jqj/WAlOEnK9rXCoC1oZoldmFyzjtfpIhV1xVTOIcGg/nFnxlDCbqt7gCPpT2YOR6FoiHqpZngux6ojs8D0syC9qnG33D2KfbPFeosmjVV+JzwlkxpVKurfveGVK0F90/F201xfaIsIZIHJjHHGE1Wc5vG+3RZxr3xZmM7JWWmnHBpvbysjRjm1gOJfDHDo62oYQzot2+/KGzxq5cEr25u6LqoE3MRQyPtlVVkfwTXZxRMkKcKU4v2xJDd2ZyRaDAgQfsaYaEdtGnDZDASz450tatYRVQd0ohpi7SWlf4bPDuNrcytfHpPEA1Nx0YTRf6d2l1bv8g8u8xsg1zUc74Qu3JXq/4dEs1UxP3CwU4OPLAOV5vev/09BF1jM5LXY= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 23-Apr-25 9:31 PM, Dave Hansen wrote: > On 4/23/25 02:30, Bharata B Rao wrote: >> On 22-Apr-25 8:43 PM, Dave Hansen wrote: >>> On 4/21/25 23:34, Bharata B Rao wrote: >>>> At the outset, it appears that the selection of vmemmap_base doesn't >>>> seem to consider if there is going to be enough room of accommodating >>>> future hot plugged pages. >>> >>> Is this future hotplug area in the memory map at boot? >> >> The KVM guest isn't using any -m maxmem option if that's what you are >> hinting at. > > How could vmemmap_base consider future hotplug areas if it isn't told > where they will be? This is device private memory which means only struct pages need to be mapped. What's the way by which kernel will know about the future growth in the number of struct pages to accommodate the incoming device private memory? In any case, how can kaslr put vmemmap_base completely out of the range earmarked for it in mm.rst? Regards, Bharata.