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[2a09:80c0:84::108]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a6e810caefsm1268633f8f.87.2025.06.24.01.25.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 24 Jun 2025 01:25:24 -0700 (PDT) Message-ID: <4b69c14f-1001-48a0-9c83-6d2284b5a04a@redhat.com> Date: Tue, 24 Jun 2025 10:25:23 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] ksm_tests: Skip hugepage test when Transparent Hugepages are disabled To: Li Wang , akpm@linux-foundation.org, lorenzo.stoakes@oracle.com, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Aruna Ramakrishna , Bagas Sanjaya , Catalin Marinas , Dave Hansen , Joey Gouly , Johannes Weiner , Keith Lucas , Ryan Roberts , Shuah Khan References: <20250621004808.368878-1-liwang@redhat.com> <20250624032748.393836-1-liwang@redhat.com> 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: <20250624032748.393836-1-liwang@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: RZTkAovAc3GpFJESt5GOc6Tj-LJAuiKTUXhprKBHTX4_1750753526 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: CD8D3100009 X-Rspam-User: X-Rspamd-Server: rspam07 X-Stat-Signature: 6yjxf4a51k5zg4ogjj46883sfcp1d6j8 X-HE-Tag: 1750753529-938508 X-HE-Meta: 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 Uo07sSel VHouRnTNJwgsC9Gf841/Sx6xx38Q1Mme8FzkF8SNQntVOLLNp7Zj7EjSD7FkqHmMqM/hzIgN6mRcEZC7Our4poYpipPxoz6eO7tYFa3XMJJPccrcCXqEgMsMI5AH0vhPtKZ6nRpeGh5m9SUzJvOpTFqGMBwcJOmwlLR7xiItXs9s4d/JzqHtYU/6ZuDiXFBKZIPFDRBfRW5STA+paSK7U4k17gN4E2zGq6H0KJPLHKNyl185hIJVs9ONnyeJKS40nKrtmZF0FhoYN26wncxDwu/gxR6ssWh5X2o67clcKBOiMUOKHPG0gb9LRK6BqxWakbrgwyAC3oop9t7HOCvL0UNYnRkQG+unTN0tod//GzsVnCzFXcXV/3JkOeGUCI4h1PL1bPlxmbXKVE1q5240FxUnRurFHBPcOVpeUx9ugNR6aN14LL4XT9qDyJ4giZ/XWEpjTe4yGLee4+kOAN28NH60cEn0wzocPgirT 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 24.06.25 05:27, Li Wang wrote: > Some systems (e.g. minimal or real-time kernels) may not enable > Transparent Hugepages (THP), causing MADV_HUGEPAGE to return EINVAL. > This patch introduces a runtime check using the existing THP sysfs > interface and skips the hugepage merging test (`-H`) when THP is > not available. > > To avoid those failures: But we deliberately have in tools/testing/selftests/mm/config: CONFIG_TRANSPARENT_HUGEPAGE=y So isn't this rather a test setup issue? Meaning, the environment is not well prepared. -- Cheers, David / dhildenb