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[2003:d8:2f4a:8900:884a:b3af:e3c9:ec88]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a1f58f3369sm23428151f8f.57.2025.05.15.09.04.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 May 2025 09:04:59 -0700 (PDT) Message-ID: Date: Thu, 15 May 2025 18:04:57 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/6] prctl: introduce PR_SET/GET_THP_POLICY To: Usama Arif , Lorenzo Stoakes Cc: Andrew Morton , linux-mm@kvack.org, hannes@cmpxchg.org, shakeel.butt@linux.dev, riel@surriel.com, ziy@nvidia.com, laoar.shao@gmail.com, baolin.wang@linux.alibaba.com, Liam.Howlett@oracle.com, npache@redhat.com, ryan.roberts@arm.com, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, kernel-team@meta.com References: <20250515133519.2779639-1-usamaarif642@gmail.com> <6502bbb7-e8b3-4520-9547-823207119061@lucifer.local> <5e4c107f-9db8-4212-99b6-a490406fec77@gmail.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: X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: 0Rt6Ihct9cBoaUn7iOTmy0CKEYbeprt9T4HP2D2XS3Q_1747325100 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: ywbw6m49tnnmri4j7c1ffxj9fkn6spdh X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 78FCAC0023 X-HE-Tag: 1747325103-127727 X-HE-Meta: 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 kaj6pbcY 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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: >> Please no :) 'VMA' is implicit re: mappings. If you're touching memory >> mappings you're necessarily touching VMAs. >> >> I know some prctl() (a pathway to many abilities some consider to be >> unnatural) uses 'VMA' in some of the endpoints but generally when referring >> to specific VMAs no? >> >> These namesa are already kinda horrible (yes naming is hard, for everyone, >> ask me about MADV_POISON/REMEDY) but I think something like: >> >> PR_DEFAULT_MADV_HUGEPAGE >> PR_DEFAULT_MADV_NOHUGEPAGE >> >> -ish :) >> > > Sure, happy with that, Thanks. Yes, please :) -- Cheers, David / dhildenb