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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BF337C55160 for ; Thu, 30 Jul 2026 10:26:50 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B79DA6B0092; Thu, 30 Jul 2026 06:26:49 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B040D6B0093; Thu, 30 Jul 2026 06:26:49 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 97E096B0095; Thu, 30 Jul 2026 06:26:49 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 6C7A36B0092 for ; Thu, 30 Jul 2026 06:26:49 -0400 (EDT) Received: from smtpin09.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 063F1A1EFB for ; Thu, 30 Jul 2026 10:26:49 +0000 (UTC) X-FDA: 85045064538.09.1612DA4 Received: from AM0PR83CU005.outbound.protection.outlook.com (mail-westeuropeazon11010020.outbound.protection.outlook.com [52.101.69.20]) by imf22.hostedemail.com (Postfix) with ESMTP id 37A1FC0009 for ; Thu, 30 Jul 2026 10:26:44 +0000 (UTC) Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=arm.com header.s=selector1 header.b=I3KGM4Ub; dkim=pass header.d=arm.com header.s=selector1 header.b=I3KGM4Ub; arc=pass ("microsoft.com:s=arcselector10001:i=2"); spf=pass (imf22.hostedemail.com: domain of Usama.Anjum@arm.com designates 52.101.69.20 as permitted sender) smtp.mailfrom=Usama.Anjum@arm.com; dmarc=pass (policy=none) header.from=arm.com ARC-Message-Signature: i=3; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1785407205; 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=W3wZAwMMPZoTgl0+TvR5LTWocvVN0gVFmphGcUzdiRM=; b=nw5AwWj5IPG9jhMHDAlwWIj4kmz3OeMA+zTcUGnE8MWt8JgARQNlc5AR3LFveEm5RRFcWN 8t7EqBf8CA0/L6bgJBZl1goG1j6iUituEvU0sq1bVk3z9dPVrNf2X0ROr+qv0t0evi/Gdr D9toTwZTklzApgeCodiB8XWu4PWZdWE= ARC-Authentication-Results: i=3; imf22.hostedemail.com; dkim=pass header.d=arm.com header.s=selector1 header.b=I3KGM4Ub; dkim=pass header.d=arm.com header.s=selector1 header.b=I3KGM4Ub; arc=pass ("microsoft.com:s=arcselector10001:i=2"); spf=pass (imf22.hostedemail.com: domain of Usama.Anjum@arm.com designates 52.101.69.20 as permitted sender) smtp.mailfrom=Usama.Anjum@arm.com; dmarc=pass (policy=none) header.from=arm.com ARC-Seal: i=3; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=pass; t=1785407205; b=ALGdQpkn+UgBSuO7ZhFDHy1ScQxeLAK5K+3AXyGdinqGYqxqzD0qyXBkHCZLcRxRt7f1ps 1A5qtOXw29y/GuX7gPIr68g2qs5Et7Ir7rEJZvP443kpuDEzH2KUYdeSz+YGvIoDLtOVwf Sr7fAgtqN9APYx/c1f2x9Fjvkkq//Cg= ARC-Seal: i=2; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=pass; b=sRJc0rLoy8gcF3NArSz9853A6rzaldEhaXQkIWreqs4Pz76rSuPtvxl/BnyUN7w6CVyP7Ge2OZUWzEFIGGIthJqhU+MP9jyDAMvVefoMcbcIUzRNX6Vx7E/b2V6dYQKjBR28/MkRTJlWZxy68/rL12ysH5rApRmFQTgk2+KGdn8JRi6p+Lk714qR0Pcv6mq39GmE5Ugij29SUXqtlMveWiKB9Vbm5s8jfMpZJQG358xVnRYvLPyWSw1OYKXCoDwcJCc/WL7Iz1hHfF9jcBHRLRgLfOx2FtgSEqLB7+X3lw9RO3tSS1TO+EUUWpiyBG/FRLJd5ZfhdiVodtRqD38w1Q== ARC-Message-Signature: i=2; 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=W3wZAwMMPZoTgl0+TvR5LTWocvVN0gVFmphGcUzdiRM=; b=ABJ1CrzgUr48o1FG28XFjvNGL6JjE12+0r7ORKJRgCdjIYWom0mdjODfLK1UWdcZ1C2PqYjKzIUGvv34YkHSpb+7HxdW3OGz9tFeOPQZt7YuFzaRw9HKGEARi/53RhKle0DNY+MgzIA5E/UMWkAZTn2ed7+M8bOfHUzSeHt/wwJi1/NhsOZXM8DNgqQkTS/ebHJXZug854AQ6870OnD30ED7bK2vUPVFHeWC/VWPjrVc0TO23Gxoh7SrJPg3nBKqetZKJq9nVUYk6BuFARoI81nXE3SftoXfPJ3LohWaOr4YLYIwuJd1fD/CN7kxbOMxToGMqBmay5vDyQBUSxDz8g== ARC-Authentication-Results: i=2; mx.microsoft.com 1; spf=pass (sender ip is 4.158.2.129) smtp.rcpttodomain=linux.ibm.com smtp.mailfrom=arm.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=arm.com; dkim=pass (signature was verified) header.d=arm.com; arc=pass (0 oda=1 ltdi=1 spf=[1,1,smtp.mailfrom=arm.com] dkim=[1,1,header.d=arm.com] dmarc=[1,1,header.from=arm.com]) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arm.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=W3wZAwMMPZoTgl0+TvR5LTWocvVN0gVFmphGcUzdiRM=; b=I3KGM4UbiK3WIJNvtMLyCLKEtgAXgD6bn0xN3RM8BZUiRELjJKB8aNg0GS0K0Zkm8DgbPZTATfeO89kDomtxbUreYjDNWfu2IAQJ0kt8rZD/6dyYZfSbFtfCeNR43NYJtBUMxXjH5BfKeE1xftNRWFhpLkvvVhRAM+3b6bPrwKM= Received: from DB9PR02CA0009.eurprd02.prod.outlook.com (2603:10a6:10:1d9::14) by AS4PR08MB7758.eurprd08.prod.outlook.com (2603:10a6:20b:515::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.270.12; Thu, 30 Jul 2026 10:26:38 +0000 Received: from DU2PEPF0001E9C3.eurprd03.prod.outlook.com (2603:10a6:10:1d9:cafe::4f) by DB9PR02CA0009.outlook.office365.com (2603:10a6:10:1d9::14) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.270.14 via Frontend Transport; Thu, 30 Jul 2026 10:26:38 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 4.158.2.129) smtp.mailfrom=arm.com; dkim=pass (signature was verified) header.d=arm.com;dmarc=pass action=none header.from=arm.com; Received-SPF: Pass (protection.outlook.com: domain of arm.com designates 4.158.2.129 as permitted sender) receiver=protection.outlook.com; client-ip=4.158.2.129; helo=outbound-uk1.az.dlp.m.darktrace.com; pr=C Received: from outbound-uk1.az.dlp.m.darktrace.com (4.158.2.129) by DU2PEPF0001E9C3.mail.protection.outlook.com (10.167.8.72) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.270.5 via Frontend Transport; Thu, 30 Jul 2026 10:26:37 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=JDk6Z05YfJ98U+ROp9YQdvIgUvkAtmelCatjajEmueB0eqWoORKpIhSBuCWJg34MDT2YYcVhzaT+UFHip6u+ZDFk8Ll6OJiE5FaULhQ/dcbHjaiQXr4qMWeENZoIgTdzfYE6OYkbYmGscMVE8dMLgn4V2CxeRAiMB7O7PQ45JFDFbcnXJll0lDLF+1iflOy43hFBsVUFWFQCwpdQP3YtatJ3B/KzCxs4NZfWv2sVLI8lL7+i5J1VbrhK/D8xgDcGs1XkLch7eSwMOfHxEIKwUghWx3muEZRg0m67eH3bodkccjFs/Z0zY5G+i5d6Ia5KRdKMgLBv0RYK3NageiSCdQ== 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=W3wZAwMMPZoTgl0+TvR5LTWocvVN0gVFmphGcUzdiRM=; b=sF1ye7kIvwABa0k/uw5UtDb/io5ZKbiWz0C1UkI+KXUOucKXfwVcyW4TsIAfR4XxHS8lf3++fFrreuLymWXgiEJC5UBQu2FDNEpAE19alIoXox1cgU97AmS9AauP9zCjWyy8ZXDx5JpUWLfn2fUFaqkl7gq9B59dHyLEEa1s26ds8TRtfxtMBtasP4sJKQthSYe/URkdMuCgbBR1My4lGgXtmetVSAx3FyPTElnVzxHDYIg12xYdq9FcRhs/OdKtqrsInhPY+GQyqV5vS4IGj0QSzYpIyFFnCaFggPyeyULfuNxwXEyf48i21grm3tUkToFKBn6g3mDYs0V/iyGmLQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=arm.com; dmarc=pass action=none header.from=arm.com; dkim=pass header.d=arm.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arm.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=W3wZAwMMPZoTgl0+TvR5LTWocvVN0gVFmphGcUzdiRM=; b=I3KGM4UbiK3WIJNvtMLyCLKEtgAXgD6bn0xN3RM8BZUiRELjJKB8aNg0GS0K0Zkm8DgbPZTATfeO89kDomtxbUreYjDNWfu2IAQJ0kt8rZD/6dyYZfSbFtfCeNR43NYJtBUMxXjH5BfKeE1xftNRWFhpLkvvVhRAM+3b6bPrwKM= Authentication-Results-Original: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=arm.com; Received: from VI1PR08MB3421.eurprd08.prod.outlook.com (2603:10a6:803:80::16) by PAVPR08MB8799.eurprd08.prod.outlook.com (2603:10a6:102:32b::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.270.14; Thu, 30 Jul 2026 10:25:32 +0000 Received: from VI1PR08MB3421.eurprd08.prod.outlook.com ([fe80::e079:6bd:fbe0:89b4]) by VI1PR08MB3421.eurprd08.prod.outlook.com ([fe80::e079:6bd:fbe0:89b4%3]) with mapi id 15.21.0270.009; Thu, 30 Jul 2026 10:25:32 +0000 Message-ID: Date: Thu, 30 Jul 2026 11:25:29 +0100 User-Agent: Mozilla Thunderbird Cc: usama.anjum@arm.com, Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Simona Vetter , Dimitri Sivanich , Arnd Bergmann , Greg Kroah-Hartman , "James E.J. Bottomley" , Helge Deller , Juergen Gross , Stefano Stabellini , Muchun Song , Oscar Salvador , Andrew Morton , "Liam R. Howlett" , Lorenzo Stoakes , Will Deacon , "Aneesh Kumar K.V" , Nick Piggin , Peter Zijlstra , Andrey Ryabinin , David Hildenbrand , Pasha Tatashin , Chris Li , Kairui Song , Uladzislau Rezki , Steven Rostedt , Masami Hiramatsu , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , SJ Park , "Matthew Wilcox (Oracle)" , Jan Kara , Jason Gunthorpe , Leon Romanovsky , Miaohe Lin , Dennis Zhou , Tejun Heo , Christoph Lameter , Mike Rapoport , Johannes Weiner , ziy@nvidia.com, pfalcato@suse.de, ryan.roberts@arm.com, linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, kasan-dev@googlegroups.com, linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-perf-users@vger.kernel.org, damon@lists.linux.dev Subject: Re: [PATCH RFC 05/11] mm: convert PTE table entries in ptep_get() To: Alexander Gordeev References: <20260727164715.2866609-1-usama.anjum@arm.com> <20260727164715.2866609-6-usama.anjum@arm.com> <34eed5fd-c569-49d8-bc4d-a3d4b1207fbd-agordeev@linux.ibm.com> <9ac3f058-2a22-4801-8633-65635053c8ea-agordeev@linux.ibm.com> From: Muhammad Usama Anjum Content-Language: en-US In-Reply-To: <9ac3f058-2a22-4801-8633-65635053c8ea-agordeev@linux.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: LO4P265CA0318.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:390::17) To VI1PR08MB3421.eurprd08.prod.outlook.com (2603:10a6:803:80::16) MIME-Version: 1.0 X-MS-TrafficTypeDiagnostic: VI1PR08MB3421:EE_|PAVPR08MB8799:EE_|DU2PEPF0001E9C3:EE_|AS4PR08MB7758:EE_ X-MS-Office365-Filtering-Correlation-Id: 2ed62004-bbf5-4e4d-44e5-08deee2509ae x-checkrecipientrouted: true NoDisclaimer: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Untrusted: BCL:0;ARA:13230040|7416014|376014|23010399003|1800799024|366016|10067099003|4143699003|11063799006|56012099006|22082099003|18002099003; X-Microsoft-Antispam-Message-Info-Original: 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 X-Forefront-Antispam-Report-Untrusted: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:VI1PR08MB3421.eurprd08.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(7416014)(376014)(23010399003)(1800799024)(366016)(10067099003)(4143699003)(11063799006)(56012099006)(22082099003)(18002099003);DIR:OUT;SFP:1101; X-Exchange-RoutingPolicyChecked: fRfLvb6r8bsLj3g3MnaBsYK69jHABWYM5adlkAvFoXPc0l1et+e3sDQ3fVIRsEzSSUHvudUiLQSN1kl8DLhZgvreDww/cFr1g86SOnt7wO2FBTIUO/ZzlkT8Wvwu46XHD4O+KL+0Cg/Diiz2llOOhpq4aiE6EXMnR9Jty79jMbo4WlVoDwk7rCf0ZFgswXd0qvS4UDhThZBdUyZiw6CtADRjNgY5a9diCihtmRmWmQpuHqLJKwydC+Dpvuc9V5JKWLq1AXqkddTyT6hxcedajVUdf8dGPi6m5F3LRifURcDqh+yjXIqzzZzhIheI+Vld8LNBlcPPqqB+vdkb22xPOw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PAVPR08MB8799 X-EOPAttributedMessage: 0 X-MS-Exchange-Transport-CrossTenantHeadersStripped: DU2PEPF0001E9C3.eurprd03.prod.outlook.com X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id-Prvs: 17a892ef-686f-4e19-2c23-08deee24e2a3 X-Microsoft-Antispam: BCL:0;ARA:13230040|35042699022|376014|7416014|36860700016|23010399003|14060799003|1800799024|82310400026|56012099006|11063799006|10067099003|4143699003|18002099003|22082099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:4.158.2.129;CTRY:GB;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:outbound-uk1.az.dlp.m.darktrace.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(35042699022)(376014)(7416014)(36860700016)(23010399003)(14060799003)(1800799024)(82310400026)(56012099006)(11063799006)(10067099003)(4143699003)(18002099003)(22082099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: jp8hMIbXZEYBINRi8OIiVYCjAxWHMFaXfKeVo6xRWmXbe3ar6XJ0MFjdSsFmetL1MZUnz047Doifpuq9kGIPdWUzBlRHWb02yz1SEdzs9MBiRzo6ZrYJKpYiMta+6R9EYpgfnerBlOBrP+O1U9KAwNUFppmcKoRyqrxdgI8DagKKw7pEaS9V54HMRUyCNG3xqM+2i0HmePDEV97XBbmN9IuMZEO4X9LY2132llfEx44J2W9a4rxE4kobhz+FIbs6IeZAChBLFUuqXD0XcQXk71PdtZxD45+nCovImRvfKyBCT7843oEa365lFiGacSFfnNapSWJZhTuNpY4qm2GBZ6OWY0lDl63lvKVoPbJ3RAZkSw9r0oOFno1rt4zdXpayntNaX9zEDJxRBiEEiDYVpS1HSr8KCuKXJojlwJ/dx5KWMhiTUVer/j29V9G+mHuZ X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Jul 2026 10:26:37.6141 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2ed62004-bbf5-4e4d-44e5-08deee2509ae X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[4.158.2.129];Helo=[outbound-uk1.az.dlp.m.darktrace.com] X-MS-Exchange-CrossTenant-AuthSource: DU2PEPF0001E9C3.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS4PR08MB7758 X-Rspam-User: X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 37A1FC0009 X-Stat-Signature: 3a3ga9ajcd9w1mcp7n4ek1wrjyhtkedo X-HE-Tag: 1785407204-249477 X-HE-Meta: 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 zSGtqQLK 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 30/07/2026 11:24 am, Alexander Gordeev wrote: > On Thu, Jul 30, 2026 at 11:11:35AM +0100, Muhammad Usama Anjum wrote: >> On 30/07/2026 11:08 am, Alexander Gordeev wrote: >>> On Mon, Jul 27, 2026 at 05:46:56PM +0100, Muhammad Usama Anjum wrote: >>>> ptep_get() now accepts a pointer to hw_pte_t storage but must continue to >>>> return a logical pte_t value. Add __pte_from_hw() as the conversion hook >>>> and apply it in the generic ptep_get() implementation. >>>> >>>> Signed-off-by: Muhammad Usama Anjum >>>> --- >>>> include/linux/pgtable.h | 2 +- >>>> include/linux/pgtable_types.h | 1 + >>>> 2 files changed, 2 insertions(+), 1 deletion(-) >>>> >>>> diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h >>>> index dad80d264aac2..3003ac9cd81fe 100644 >>>> --- a/include/linux/pgtable.h >>>> +++ b/include/linux/pgtable.h >>>> @@ -493,7 +493,7 @@ static inline int pudp_set_access_flags(struct vm_area_struct *vma, >>>> #ifndef ptep_get >>>> static inline pte_t ptep_get(hw_pte_t *ptep) >>>> { >>>> - return READ_ONCE(*ptep); >>>> + return READ_ONCE(__pte_from_hw(*ptep)); >>> >>> Should it be something like? >>> >>> return __pte_from_hw(READ_ONCE(*ptep)); >> I'd thought about it. My thinking is that we should get the pte_t first before >> before calling READ_ONCE(). Please correct me what makes more sense? > > I have a problem with "get the pte_t first" part ;) I think what we want > is atomically read the hw_pte_t from the HW table and then convert the > result to pte_t. Got it. I'll fix it in the next version. > >>> >>>> } >>>> #endif >>>> >>>> diff --git a/include/linux/pgtable_types.h b/include/linux/pgtable_types.h >>>> index ed5dba42a4f8c..61afe27307ec2 100644 >>>> --- a/include/linux/pgtable_types.h >>>> +++ b/include/linux/pgtable_types.h >>>> @@ -6,6 +6,7 @@ >>>> >>>> #ifndef __HAVE_ARCH_HW_PTE_T >>>> #define hw_pte_t pte_t >>>> +#define __pte_from_hw(pte) (pte) >>>> #endif >>>> >>>> #endif /* _LINUX_PGTABLE_TYPES_H */ >>>> -- >>>> 2.47.3 >>>> >> >> -- >> Thanks, >> Usama >> -- Thanks, Usama