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 BCB85C10F05 for ; Mon, 11 Dec 2023 16:32:27 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 509C96B0171; Mon, 11 Dec 2023 11:32:27 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 4B96F6B0172; Mon, 11 Dec 2023 11:32:27 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 30C2D6B0173; Mon, 11 Dec 2023 11:32:27 -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 21E8B6B0171 for ; Mon, 11 Dec 2023 11:32:27 -0500 (EST) Received: from smtpin13.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 0575E1A07D1 for ; Mon, 11 Dec 2023 16:32:27 +0000 (UTC) X-FDA: 81555080334.13.BAE4493 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by imf11.hostedemail.com (Postfix) with ESMTP id C51D940019 for ; Mon, 11 Dec 2023 16:32:24 +0000 (UTC) Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=RrohglLv; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf11.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=david@redhat.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1702312344; a=rsa-sha256; cv=none; b=6KgzSvFSA4q7C4BIQKBBtbkN/mSA3zsY4lu+eE7Mx3PtK47yZ876n1QEQyFB5JX+XPS0Iw UJmZHrcJdnbfJ6cYD5YPlPNbUGA34M9LfYWswaff0IoX+jpOgieYVIxgwTi4KDdXDq1TKH LRk46/d6UZq5byXVFMMZ9i1Lcq5guVU= ARC-Authentication-Results: i=1; imf11.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=RrohglLv; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf11.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=david@redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1702312344; 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=Zf8entefDzOqQ9+sQlfmVQKb6/ZuCgvQj4+9alNyvCE=; b=otCOHzm5TJdstbklEqSjLVMIpoOUey2eicBmiqgP8sV6gvRROEG7RpK6gTOrpjz5m5QKj7 81T993H0nT0GEzb53S7RHjXcEvMqB2VMryAcu9PcqGPAZ9PARutz3KBK1mE7PUvXy/CQcK /xImHM5KJtijAfiHW10PKFCnDpqpcXI= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1702312344; h=from:from: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:autocrypt:autocrypt; bh=Zf8entefDzOqQ9+sQlfmVQKb6/ZuCgvQj4+9alNyvCE=; b=RrohglLv4aj1f9RzQogKwilbQ4sn9QUmRZnJMIPTv73iAYoo/nsX9Bj4xxs4clV3Rm0wZa 8jOl/o2SK+Nj3Fhnbk1L/vwYDEqwKnJfRe93PTRE57oqlORH3h91rKs9S/rPMF0X3fpXpH WjMDv1x81GkdbM1pGKWHQ7jMmIOOBRs= Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-621-q4BDAxBHNfuzzMnpVJfd9A-1; Mon, 11 Dec 2023 11:32:20 -0500 X-MC-Unique: q4BDAxBHNfuzzMnpVJfd9A-1 Received: by mail-wr1-f71.google.com with SMTP id ffacd0b85a97d-3334b472196so3929495f8f.1 for ; Mon, 11 Dec 2023 08:32:20 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702312339; x=1702917139; h=content-transfer-encoding:in-reply-to:organization:autocrypt:from :references:cc:to:content-language:subject:user-agent:mime-version :date:message-id:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=Zf8entefDzOqQ9+sQlfmVQKb6/ZuCgvQj4+9alNyvCE=; b=Zzt5F7VcghmlMgA4oBj9MdVWBM7Jx9IbUvb8nnjGo9u6andexy6FPdDIA6YezJlmEN DaekjIPbW+4St7EUF9luPnDEjfq6NPS/5tKaUW96Kd94OkAu08KKj8vNRRSjKvJ6Aa00 AUFZBN0/EO0+48hdD/BkapSq0qhjvgSQ2iGDhurg9pF8DBh5B0xkiLKA3d1zSiGsjUy9 HY+Qu4oxZScSn2/IjjWtKIvNvnMK44ggO+UOYx4PSrw5nVehV0ptTrPuJHZXRRK1phdd 9cPEWSyNS7nOrfvIvPk+H5k4nO7P/3AmNbxDKds6mnJhF6nB/y10MY4lAuTBywBMtcuW Vhlw== X-Gm-Message-State: AOJu0YxCWnsZ1ba2+7sIwhjSVTLoRB/DFSFVuOgUHCDjDCEGYsjt8Dg9 K4ka0ITyywbInY8Rhat9DdgixWUHCRoffJHdGOG0IPEgz4tevCN1EMZ9S/ZS94ju/kLKO9qWuQn ddyrDPg21fSs= X-Received: by 2002:a5d:48ca:0:b0:333:1adc:a37b with SMTP id p10-20020a5d48ca000000b003331adca37bmr2319670wrs.5.1702312339407; Mon, 11 Dec 2023 08:32:19 -0800 (PST) X-Google-Smtp-Source: AGHT+IHCImgJ+fdKFn2Ho8LCcXYicLPE96TwwOTSIvoc44yS2tSwvRXXt4g8MHsfBuDF4HXBbgU4Qg== X-Received: by 2002:a5d:48ca:0:b0:333:1adc:a37b with SMTP id p10-20020a5d48ca000000b003331adca37bmr2319644wrs.5.1702312339010; Mon, 11 Dec 2023 08:32:19 -0800 (PST) Received: from ?IPV6:2003:cb:c742:ae00:6e5f:7195:98f6:3ed1? (p200300cbc742ae006e5f719598f63ed1.dip0.t-ipconnect.de. [2003:cb:c742:ae00:6e5f:7195:98f6:3ed1]) by smtp.gmail.com with ESMTPSA id h6-20020adffd46000000b003333c9ad4d6sm8926700wrs.116.2023.12.11.08.32.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 11 Dec 2023 08:32:18 -0800 (PST) Message-ID: <3240f4b5-081b-4075-851a-7d1cd86f4333@redhat.com> Date: Mon, 11 Dec 2023 17:32:16 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 5/5] selftests/mm: add UFFDIO_MOVE ioctl test To: Suren Baghdasaryan , Mark Brown Cc: akpm@linux-foundation.org, viro@zeniv.linux.org.uk, brauner@kernel.org, shuah@kernel.org, aarcange@redhat.com, lokeshgidra@google.com, peterx@redhat.com, ryan.roberts@arm.com, hughd@google.com, mhocko@suse.com, axelrasmussen@google.com, rppt@kernel.org, willy@infradead.org, Liam.Howlett@oracle.com, jannh@google.com, zhangpeng362@huawei.com, bgeffon@google.com, kaleshsingh@google.com, ngeoffray@google.com, jdduke@google.com, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, kernel-team@android.com, John Hubbard , Peter Zijlstra References: <20231206103702.3873743-1-surenb@google.com> <20231206103702.3873743-6-surenb@google.com> <50385948-5eb4-47ea-87f8-add4265933d6@redhat.com> <6a34b0c9-e084-4928-b239-7af01c8d4479@sirena.org.uk> From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: C51D940019 X-Stat-Signature: iksniheqx7crnxqfsouhiua8oq5imjru X-HE-Tag: 1702312344-116858 X-HE-Meta: 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 z77c1djN 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 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 11.12.23 17:15, Suren Baghdasaryan wrote: > On Mon, Dec 11, 2023 at 4:24 AM Mark Brown wrote: >> >> On Mon, Dec 11, 2023 at 01:03:27PM +0100, David Hildenbrand wrote: >>> On 11.12.23 12:15, Mark Brown wrote: >> >>>> This is linux-next. I pasted the commands used to build and sent links >>>> to a full build log in the original report. >> >>> Probably also related to "make headers-install": >> >>> https://lkml.kernel.org/r/20231209020144.244759-1-jhubbard@nvidia.com >> >>> The general problem is that some mm selftests are currently not written in >>> way that allows them to compile with old linux headers. That's why the build >>> fails if "make headers-install" was not executed, but it does not fail if >>> "make headers-install" was once upon a time executed, but the headers are >>> outdated. >> >> Oh, it's obviously the new headers not being installed. The builds >> where I'm seeing the problem (my own and KernelCI's) are all fresh >> containers so there shouldn't be any stale headers lying around. > > Ok, I was updating my headers and that's why I could not reproduce it. > David, should the test be modified to handle old linux headers > (disable the new tests #ifndef _UFFDIO_MOVE or some other way)? That's an open question: do we want to be able to build selftests against any host headers, and not the in-tree headers that have to be manually installed and dirty the git tree? One obvious drawbacks is that we'll have to deal with all that using a bunch of #ifdef, and the tests that will be built+run will depend on the host headers. Especially the letter is relevant I think: Our upstream testing won't be able to build+run tests that rely on new upstream features. But that's what some key benefit of these selftests, and being able to run them automatically on a bunch of different combinations upstream. Further, the tests are closely related to the given kernel version, they are not some completely separate tests. Moving the the (MM?) selftests to a separate repository would make the decision easier: just like in QEMU etc, we'd simply pull in a headers update and only build against these archived headers. So I see the options: (1) Rely on installing the proper in-tree headers. Build will fail if that is not happening. (2) Make the tests build with any host headers. (3) Regularly archive the required headers in the selftest directory like external projects like QEMU do. (3) avoids dirtying the tree as a "make headers_install" would, but it also means that each test that makes use of new uapi has to update the relevant headers (what people working on QEMU are used to). -- Cheers, David / dhildenb