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b=aYqeBaPGqgVCnGwuvPdFvw4FhXEbUUqtYbbQ1q6O68WBT9JZr3v8eY9rDcdR5z7ML Z+D8mfZHER3XEkF+maX6SJQscQnYViODMzgE7qSkeWhXDDaTAR55xudkDJDChUXdqU 8v/PQSZWtNzD6qNTYXskVAUbFIVzIExRbxH6MlhnLYG+PgtcwXLLUHG3sXTZguUsy7 pbBCf71M/La8BmXkY06KfvQU91hjFoATgQ8sEXsbgsrn49Ew7FN3K8kyEcjqQZKzyl lxt3ihN4leANJDqLyupdfPF+EkREssxSJhpsuB1/VxNVTX+ZSD8ghMsE18qbqwnnpA aH54W1ySAvXHA== Message-ID: <96b917e7-0167-4650-9f04-b9821590bf92@kernel.org> Date: Fri, 18 Sep 2026 14:10:26 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm: Constify arguments in default pxdp_get() To: Anshuman Khandual , linux-mm@kvack.org Cc: Andrew Morton , Lorenzo Stoakes , linux-kernel@vger.kernel.org References: <20260918064928.793742-1-anshuman.khandual@arm.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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 B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: <20260918064928.793742-1-anshuman.khandual@arm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 158EC4000C X-Stat-Signature: 73dutu543mojebfrpromn1kgsdb3ko3g X-Rspam-User: X-HE-Tag: 1789733430-587835 X-HE-Meta: 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 hYIb8M4X 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 9/18/26 08:49, Anshuman Khandual wrote: > Generic MM default pxdp_get() helpers fetch the values contained in pgtable > entries via READ_ONCE() without modifying them. Just make their arguments > explicitly 'const' for some additional protection. > > Cc: Andrew Morton > Cc: David Hildenbrand > Cc: Lorenzo Stoakes > Cc: linux-mm@kvack.org > Cc: linux-kernel@vger.kernel.org > Suggested-by: David Hildenbrand > Signed-off-by: Anshuman Khandual > --- Acked-by: David Hildenbrand (Arm) -- Cheers, David