From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from PH7PR06CU001.outbound.protection.outlook.com (mail-westus3azon11010036.outbound.protection.outlook.com [52.101.201.36]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7CC001A38F9; Wed, 30 Sep 2026 02:47:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.201.36 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790736463; cv=fail; b=AQPnp4ZC90EDjuifZzfs10ftZLijtneKGD/U+anZC+/OInHIdZ7tk1zJwTjR1SCvcFCVICctMwlCEMjxNQWptUYSV4tcc3DxHEQN8lCLHISLC8e4fDW39zY4YNsgXXGXwDm8LbvAg4qn2id7G63PJ7vEdZFVLH9rd5rwED19pWM= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790736463; c=relaxed/simple; bh=xNsa0L9U5oPNFphNUw9STjuK873ZeJ0DhLE1mvubb9w=; h=Content-Type:Date:Message-Id:From:Subject:Cc:To:References: In-Reply-To:MIME-Version; b=Dj5zvPTpMtuIJGBh+6TghHrIDJbMNzXAijJ2Te8PWzsLn1VRs1ktGBHbTbBIIusMmjKgIBoT04KSpG1HqTkdKHvG3PJ6Yqc4+t2xxlWVNE4zk7zAJWFXFb/mjwaeS5HuwtW6mSps4Dc9MxC1Uj7JOHODoEu4HloNoKvQWN1+5rk= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=Qu76NaPF; arc=fail smtp.client-ip=52.101.201.36 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="Qu76NaPF" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=c3YgU02ZlDjikN2TC8QxfsdkF2skbAI8uJCdEoVKOw7NaWVoPJOwKU4DwLka3cOwlfMyc9ePrMA0b5XMi0IHB/15GmiU0XnUW/RkOfSQznICVvmRt440A0KPkfHU2wfHm3MWlVAF48EqFBVLF11fHZzqYfuSyVqTIsYp6UDGtOZcJ+cqvv9MwZL2WcnIRRzj1D1OrOZu9PHQ9vV10x6U8lBDvtp3H9b53F2sQ0EegJRmcYVljMK4dfVey2ZZx92NDSb0WxrfdxE8ww/HIBq1ph7bb1ctc0CwUKUEM0X6oQSILBVA5lRmALV8qcDV1Dr+eTWywCtMImoxROO1ohosdA== 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=slmh+m4OI3sCOT9p/QxqNR3n6yNwEi3EPAaROPUCwmU=; b=K+aOx5MOoboR+uJzP8iR0YUnWAPfAkSb1mgIsq+30g1ZeEGT5SvVVXI5VNGVWqRFaBrgtadf7cpOFcAhmtU9UyaNB4GNyqQEd1hU95bBA5jQyl1MUWuE3AxalDAPRgUdXzwB95/zAmCYXnPnCAjt1XVK0jJgPHRE92sDsf6LGUs5D4ydaVpuEm2pEPDZ29yF6NLXwd+bNHNVcAECRnsWBqwJsbqXGkCgi1b9hOt1leu7vk84dC89IaWZriQJvnSqkKHTYBUmfVlY4br/w1VmPdrxgy3S/51EkWj51kdwerUahEXJgwRRk2MzZhdiJgOyYG4usRnY0TQYUn4g1v2GCw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; 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=slmh+m4OI3sCOT9p/QxqNR3n6yNwEi3EPAaROPUCwmU=; b=Qu76NaPFnw4kHNh/EM9vBOUwB05jUhcmptzkP0TzQQbJx89J1/1Dby4nORo4g4ofIkX0RjTo+4Mt8CXdD43g8WJ8k7U2mGGU2R8rdauEChQB374bbgA1PzvL7ZTXMDd0VonxV/V6PSGIxk6YotT4Jh8OM7cJ+hk//U9Do+I+nUelo6rgLS/dLHQkh34MiV/C/f6IjYMaYZh/fYW55rRuYFRqfJiohPnnCViyzUW2M42O/SNkWaBVS/Ic95QtUuCMh0QnszCaRopiqZZauNHcUyW+A1fCBZhycfBjOcNnFXKl+q7idJRXF951z6jO5k878z80iPrHBLm/1ssEFXwgIw== Authentication-Results: mx.microsoft.com 1; dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from IA0PR12MB8374.namprd12.prod.outlook.com (2603:10b6:208:40e::7) by SJ0PR12MB7066.namprd12.prod.outlook.com (2603:10b6:a03:4ae::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.18; Wed, 30 Sep 2026 02:47:26 +0000 Received: from IA0PR12MB8374.namprd12.prod.outlook.com ([fe80::d85f:4c87:ae84:3f16]) by IA0PR12MB8374.namprd12.prod.outlook.com ([fe80::d85f:4c87:ae84:3f16%6]) with mapi id 15.21.0451.022; Wed, 30 Sep 2026 02:47:26 +0000 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 29 Sep 2026 22:47:22 -0400 Message-Id: From: "Zi Yan" Subject: Re: [PATCH v3 36/40] mm: avoid use of VMA_SPECIAL_FLAGS in migrate_vma_setup() Cc: , , , , , , , , , , , , , , , , , , , , , , , To: "Lorenzo Stoakes (ARM)" , "Andrew Morton" , "Liam R. Howlett" , "Vlastimil Babka" , "Jann Horn" , "Pedro Falcato" , "David Hildenbrand" , "Mike Rapoport" , "Suren Baghdasaryan" , "Michal Hocko" , "Jonathan Corbet" , "Greg Kroah-Hartman" , "Dennis Dalessandro" , "Jason Gunthorpe" , "Leon Romanovsky" , "Paul Moore" , "Stephen Smalley" , "Jaroslav Kysela" , "Takashi Iwai" , "Alexei Starovoitov" , "Daniel Borkmann" , "Andrii Nakryiko" , "Eduard Zingerman" , "Kumar Kartikeya Dwivedi" , "Baolin Wang" , "Nico Pache" , "Ryan Roberts" , "Dev Jain" , "Barry Song" , "Lance Yang" , "Usama Arif" , "Kiryl Shutsemau" , "Doug Gilbert" , "James E.J. Bottomley" , "Martin K. Petersen" , "Jaya Kumar" , "Simona Vetter" , "Helge Deller" , "Sebastian Reichel" , "John Hubbard" , "Peter Xu" , "Masami Hiramatsu" , "Oleg Nesterov" , "Peter Zijlstra" , "Thomas Gleixner" , "Ingo Molnar" , "Borislav Petkov" , "Dave Hansen" , , "Arnaldo Carvalho de Melo" , "Namhyung Kim" , "Mark Rutland" , "Rik van Riel" , "Harry Yoo" , "Juri Lelli" , "Vincent Guittot" , "Maarten Lankhorst" , "Maxime Ripard" , "Thomas Zimmermann" , "David Airlie" , "Will Deacon" , "Aneesh Kumar K.V" , "Nick Piggin" , "Arnd Bergmann" , "Muchun Song" , "Oscar Salvador" , "Matthew Wilcox (Oracle)" , "Jan Kara" , "Marc Zyngier" , "Oliver Upton" , "Catalin Marinas" , "Madhavan Srinivasan" , "Anup Patel" , "Paul Walmsley" , "Palmer Dabbelt" , "Albert Ou" , "Christian Borntraeger" , "Janosch Frank" , "Claudio Imbrenda" , "Alexander Gordeev" , "Gerald Schaefer" , "Heiko Carstens" , "Vasily Gorbik" , "David S. Miller" , "Andreas Larsson" , "Alexander Viro" , "Christian Brauner" , "Matthew Brost" , "Joshua Hahn" , "Rakie Kim" , "Byungchul Park" , "Gregory Price" , "Ying Huang" , "Alistair Popple" , "Chris Li" , "Kairui Song" , "Kemeng Shi" , "Nhat Pham" , "Baoquan He" , "Youngjun Park" , "Johannes Weiner" , "Qi Zheng" , "Shakeel Butt" , "Axel Rasmussen" , "Yuanchu Xie" , "Wei Xu" , "Chengming Zhou" , "Michal Hocko" , "Miklos Szeredi" , "Xu Xin" X-Mailer: aerc 0.22.0 References: <20260917-b4-mmap-prepare-vma-flag-sanify-v3-0-4583d8a23bca@kernel.org> <20260917-b4-mmap-prepare-vma-flag-sanify-v3-36-4583d8a23bca@kernel.org> In-Reply-To: <20260917-b4-mmap-prepare-vma-flag-sanify-v3-36-4583d8a23bca@kernel.org> X-ClientProxiedBy: BL1PR13CA0427.namprd13.prod.outlook.com (2603:10b6:208:2c3::12) To IA0PR12MB8374.namprd12.prod.outlook.com (2603:10b6:208:40e::7) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: IA0PR12MB8374:EE_|SJ0PR12MB7066:EE_ X-MS-Office365-Filtering-Correlation-Id: 95aa10a4-b7b6-4237-79d4-08df1e9d290b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|23010399003|7416014|376014|921020|10067099003|11063799006|4143699003|56012099006|22082099003|18002099003; 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This > drops the VMA_IO_BIT test, which is safe as only kernel-owned mappings ma= y > set it. > > hugetlb mappings remain excluded, as they are fixed mappings. > > No functional change intended. > > Signed-off-by: Lorenzo Stoakes (ARM) > --- > mm/migrate_device.c | 12 +++++++----- > 1 file changed, 7 insertions(+), 5 deletions(-) > Reviewed-by: Zi Yan --=20 Best Regards, Yan, Zi