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[2003:cb:c742:ae00:6e5f:7195:98f6:3ed1]) by smtp.gmail.com with ESMTPSA id d1-20020adfe881000000b003334926fb81sm3898041wrm.90.2023.12.11.08.54.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 11 Dec 2023 08:54:01 -0800 (PST) Message-ID: <6ee5d68a-fa54-4ed6-bc41-2bff0d9eb12f@redhat.com> Date: Mon, 11 Dec 2023 17:53:59 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 5/5] selftests/mm: add UFFDIO_MOVE ioctl test To: Mark Brown Cc: Suren Baghdasaryan , 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> <3240f4b5-081b-4075-851a-7d1cd86f4333@redhat.com> <1368c558-c58c-4574-907e-36b07dee31bb@sirena.org.uk> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 4F11EA0025 X-Stat-Signature: fpo98wuypep894e6d6c694ykrqrncq9a X-HE-Tag: 1702313646-410113 X-HE-Meta: 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 Db6E1Bnx R4G0RPmos2t6NVY9EuEcFKHjaysVwLLziBCKwtps9gTvMyeafEdRUi0lYay+cBcLb6ZFh8im0IB9fHfNFbUGhU3292vuhZ0Lquz0GKeHI8Ky0BxuvHhxPxif3eFGT1I97p5BVkZdc4QrCcz5ansDDGn6UyxueHtVmmMoIQQt6gB52FSo+G6ayPfI2NYnAMOiJ1sT7V1ZkPJPLmEUn/WoLBLu/3uSENAgIB3ens+Sk93MpnPLqSbzJWmk0U+5II4NJNw4jS3lqIr1SfJrup0oRD3q4Yp5fp0yVNI7RLH2X1O8pSQ/umGJ4wamv1mbvbda79pfyWtqKUuJfFBZw0rmnImp75GqOrP/bPu1Z+L6npkqCJJLd6tgN3hm9ND+Mx/P1p2fBVH5I4KFcdai3Oi2B9e0dkUD63HfKAEbn4Qg63FeXBzEBM8t6bZ7ZLjwUJEd7RouKflAAVLqE3TeYNGoqjyJuYTAcaaMGND/ifY1aAUqalvA= 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: >> Further, the tests are closely related to the given kernel version, they are >> not some completely separate tests. > > Note that there's a general desire for the tests to *run* with older > kernels and use whatever feature test mechanisms exist to skip tests > that won't run. That's often needed anyway for configurable things. Agreed. > >> (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). > > Note that you can do an out of tree build to avoid dirtying things. Yes, but apparently the simple "make headers_install" will dirty the kernel. See (and ideally comment on) https://lkml.kernel.org/r/20231209020144.244759-1-jhubbard@nvidia.com -- Cheers, David / dhildenb