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 DBDBCC4167D for ; Wed, 13 Dec 2023 22:02:01 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B8F546B0499; Wed, 13 Dec 2023 17:02:00 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 9B9DA6B0491; Wed, 13 Dec 2023 17:02:00 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 770216B048A; Wed, 13 Dec 2023 17:02:00 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 4FB096B0480 for ; Wed, 13 Dec 2023 17:02:00 -0500 (EST) Received: from smtpin11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 18DE4140352 for ; Wed, 13 Dec 2023 22:01:59 +0000 (UTC) X-FDA: 81563168400.11.BC6B932 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (mail-dm6nam10on2077.outbound.protection.outlook.com [40.107.93.77]) by imf08.hostedemail.com (Postfix) with ESMTP id CDF62160006 for ; Wed, 13 Dec 2023 22:01:56 +0000 (UTC) Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=mv8wyd2n; spf=pass (imf08.hostedemail.com: domain of jhubbard@nvidia.com designates 40.107.93.77 as permitted sender) smtp.mailfrom=jhubbard@nvidia.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); dmarc=pass (policy=reject) header.from=nvidia.com ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1702504917; 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=m/Ge0+N9rTWmHtwBtuVyIKn8PRq0Riq9nfTF9633LdQ=; b=Vo9BxaGeiISEg0aKuCY/qTvyhuLACdRCdX7Tma47y+wtbVgnJLgKKLvSWTeawHwqiDvjnG uW4Twgvgnq98mLm/LOnURFjPpKH7WeI0LcHFifssMLKpdWj9T9Vo4BA9S+fshpXXoR6B3z eLd2G3ZPGWB6veHr3CQszBqcHFT1PtM= ARC-Authentication-Results: i=2; imf08.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=mv8wyd2n; spf=pass (imf08.hostedemail.com: domain of jhubbard@nvidia.com designates 40.107.93.77 as permitted sender) smtp.mailfrom=jhubbard@nvidia.com; arc=pass ("microsoft.com:s=arcselector9901:i=1"); dmarc=pass (policy=reject) header.from=nvidia.com ARC-Seal: i=2; s=arc-20220608; d=hostedemail.com; t=1702504917; a=rsa-sha256; cv=pass; b=NGO6+ZedBhdwlpPVJd8vqDuDUetVuCoy2LGvoa8fzvkQeOQvlKgWt947hLi0Hk1NZCPq4e op2DxpEIoy5NPE0bh6hyoYGkjdXddgP/qbqNBeY6X2QiWsymDAkAd0+ro5JcUvzL4GbTNK JcOA9VLFtpn5A9hRw6yky1Uk/0U7ax8= ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=OJZU1ii1KJNOq6jLsPoAgd5VhdnhDglDJAo2lKljk/vZe1kB4VC0voNKgjQgABV5a4RaT5y/Oqzwgye6qQkuQRG4nMHxuOL7RFXRwhfixT986lVqaRBT0ED1SrjNQJYou7VBh0NBYHngRyvyzNZB0X8GRFWAvP91anFM9qZvR4nhKP/HU8k2iQmKAxPG+IikLYkG/k+UjFkAwHUXbaQ1PtPXa3qJN34ArpUDBjwsE475uHvV4AMJWceNqMRZx25wE77U9d/zvWXCTPXqcpgySKuERz/TyYzqL0TyHiwams+TEXEPxgImN1SGBHpBBpwwaHHFuTXNWcGs0svstk4ftQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; 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=m/Ge0+N9rTWmHtwBtuVyIKn8PRq0Riq9nfTF9633LdQ=; b=GlBtOH7LHg4FkrItrqGuQXnTaSK5p2qEgjZMFUjPms7e79HU42+jnMXdvzCOXZmQaWS/qnUb9Ip1NuEa4lsgUmZH5UnPkUanAR5eGDHG82pDpJylkXl3BGKGc/RLAOgEpIDDgNuj+L76k/ZkAS7AtaTPvwjgPXG4jFlljZZRWc8w2jFSP1gK/vD7f1bFbNwev4On6MdWtap5u35iaVcxkvad1626FcqOf6AK0aWoHBj7cKFWGh+mOCFQPCnLT4Acg6weF42SNtfG8SoXf1VHFVlwqD3HxMhYcYJpG7F3/0Pw+UlgEAT+EfvMbipUxs0yxmKK+ogRasQISAUMWUWPQw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.160) smtp.rcpttodomain=redhat.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=m/Ge0+N9rTWmHtwBtuVyIKn8PRq0Riq9nfTF9633LdQ=; b=mv8wyd2nOKP0gSlZpNlLIIVGdopIyPRvvs89+npq3oKO6M2moWtQk5MEU7wByxORMU1vg9q9vI6RmoezJBBa3LX48VZs6yHM1aljaHr53muzqvxuF/BlkJxRih9s1Wta6thEwkxFAnqZgsQ9M69I7CwM3xtIbnGI20SliUzUxQ+VINwWUtRTd3984Ebwnq+MAf3QzLcZeKSnoM/qLAHUx/pmlE7CYZ88phUIDXYB83Pd5mXPX4aQG3+YdjoP/qlvJe98TMHQ3e5Gcs4iC3wSKd43GkNINMLJNYEe6FSh6faRHBHBeHrkQ4oTvKy5vmoZx4s0pr783qtyNCJ9JKELxA== Received: from MW4PR04CA0213.namprd04.prod.outlook.com (2603:10b6:303:87::8) by DM3PR12MB9351.namprd12.prod.outlook.com (2603:10b6:8:1ac::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7068.33; Wed, 13 Dec 2023 22:01:54 +0000 Received: from CO1PEPF000044F7.namprd21.prod.outlook.com (2603:10b6:303:87:cafe::ac) by MW4PR04CA0213.outlook.office365.com (2603:10b6:303:87::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7091.26 via Frontend Transport; Wed, 13 Dec 2023 22:01:53 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.160) 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 216.228.117.160 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.160) by CO1PEPF000044F7.mail.protection.outlook.com (10.167.241.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7113.8 via Frontend Transport; Wed, 13 Dec 2023 22:01:53 +0000 Received: from rnnvmail201.nvidia.com (10.129.68.8) by mail.nvidia.com (10.129.200.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Wed, 13 Dec 2023 14:01:33 -0800 Received: from [10.110.48.28] (10.126.230.35) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Wed, 13 Dec 2023 14:01:32 -0800 Message-ID: Date: Wed, 13 Dec 2023 14:01:32 -0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 5/5] selftests/mm: add UFFDIO_MOVE ioctl test Content-Language: en-US To: David Hildenbrand , Muhammad Usama Anjum , Mark Brown CC: Suren Baghdasaryan , , , , , , , , , , , , , , , , , , , , , , , , , , Peter Zijlstra References: <50385948-5eb4-47ea-87f8-add4265933d6@redhat.com> <6a34b0c9-e084-4928-b239-7af01c8d4479@sirena.org.uk> <3240f4b5-081b-4075-851a-7d1cd86f4333@redhat.com> <3eadd79c-c02a-495f-92c0-0315046ef59f@nvidia.com> <3d22f342-280f-4a44-87f4-8cca291cfce7@sirena.org.uk> <0f97db9c-5b86-4f56-8463-2520fe79f709@sirena.org.uk> <2e4a719b-f2b3-48db-99db-d96040d78b12@collabora.com> <0d68fe7f-2a96-467d-87b0-52db36704e1d@nvidia.com> <926b42f9-3689-480f-8dd5-78fc0ee6088d@nvidia.com> <783a4178-1dec-4e30-989a-5174b8176b09@redhat.com> From: John Hubbard In-Reply-To: <783a4178-1dec-4e30-989a-5174b8176b09@redhat.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.126.230.35] X-ClientProxiedBy: rnnvmail203.nvidia.com (10.129.68.9) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000044F7:EE_|DM3PR12MB9351:EE_ X-MS-Office365-Filtering-Correlation-Id: cd084870-346e-4498-b3bb-08dbfc271df3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230031)(4636009)(346002)(396003)(376002)(39860400002)(136003)(230922051799003)(64100799003)(82310400011)(451199024)(186009)(1800799012)(40470700004)(36840700001)(46966006)(40480700001)(31686004)(426003)(26005)(16526019)(336012)(2616005)(40460700003)(86362001)(7636003)(31696002)(356005)(36756003)(82740400003)(7406005)(83380400001)(5660300002)(8936002)(7416002)(53546011)(47076005)(4326008)(36860700001)(8676002)(110136005)(966005)(70586007)(316002)(16576012)(54906003)(70206006)(2906002)(41300700001)(4744005)(478600001)(43740500002);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Dec 2023 22:01:53.6991 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cd084870-346e-4498-b3bb-08dbfc271df3 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000044F7.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM3PR12MB9351 X-Rspamd-Queue-Id: CDF62160006 X-Rspam-User: X-Stat-Signature: mh6bhrxhnj95u14743nmqw9iith5qpfu X-Rspamd-Server: rspam01 X-HE-Tag: 1702504916-375755 X-HE-Meta: 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 rq/aZ+5+ dcNQPpKo6vI1Bfw0YkPCQf4fsZSLUq6j6L2VTzc96T7hnRs3I4mrlhG1KwU/7vxrI6c+ejfwgslWk2wH7EK8NnLcvO5q+243dg9mLt01vvI+CRvRKrxt4hV9ybThG9Mt/3lKNdMofZJ5kCbjSiq0CiB0wJvdJa9Aq8LGa5n3pdFpDOXFFz0bB7iBsjvs+0Xv4Vk8qBKBVBl8bSWZukY3McfOFcNs6UJvwYPPPHHSIEk9q2mFseUbO8NvFaV3YzbZ3DKOc5YG3mwngx2e8RIrXNAHQ/04sQUsqMiVRnRCCcFGKwWksq16Rg5d4brhvBlbAy6sHSJIGfg92ajJ9SBwcnC9vPPyKJQR4eu04I6iSDOLlJ198Sxomm0bb+CJL9JI+TT9DEh33WfapUPM7KUgPykJwyUpd0AcyeBtSV4iehOFnvFCiqqNMT2KCNgq+DHaCPLwnc1AJbp1Hgour2TB0fb2/a6cWIo+0tQy0MZ83Cz6e10YjjJUfRoW1HyUJ936eSus0 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 12/13/23 01:59, David Hildenbrand wrote: ... >> Another variation though, would be to run "make headers", and snapshot >> some of those files into tools/include. > > ^ this is what I had in mind > > If you're writing a test that needs some new fancy thing, update the relevant header. > OK, and Mark Brown's nearby response [1] supports that, as well. Thus fortified, I plan on doing the following steps: Step 1: Do nothing about the revert patch that I sent earlier, thus allowing it to continue in its journey (so far, Andrew has moved it into mm-hotfixes-stable branch). Step 2: Send out a patch for a modest part of selftests/mm, that uses this latest approach, and see how it fares in reviews. [1] https://lore.kernel.org/c0aa00a2-38a5-42da-9951-64131d936f7e@sirena.org.uk thanks, -- John Hubbard NVIDIA