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b=BJTA3fsAogCtMFbBSK3XGA2W200R+QerBbI3i6PL3ilh4IZoyUNvFRBaszTcTVvfM HGNK4ClG94WUL5lro/i9ndO0K5Xq4LjJ8omIdzIiLkdNjzTMydYu3LYuwh9r3HGWic fwcG2OmZVTPFQU+Zci35fgGZbRHBok7JGlv6X2TPPetILIu9lhxR3SzTlZdxNjtXoq uxfbaSoKPZDQH39qvab/0v65iWtxzOwQ8cVT0ZYSQCPIz9EOd8i5NW9DPgzx7j1ChT e7u2vvauVyCz7c6sCiWVbQ+vBACxpSIUX0/KR/YX+qZws1dOr9B3LPZcQQMqn1YQ63 BvW3RdarMWObw== Message-ID: <466def52-4662-46d3-8787-8b7cd8a54288@kernel.org> Date: Mon, 13 Jul 2026 14:31:57 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH V3] mm: Standardize printing for pgtable entries To: Andy Shevchenko Cc: Anshuman Khandual , Matthew Wilcox , linux-mm@kvack.org, usama.arif@linux.dev, hughd@google.com, ryan.roberts@arm.com, Andrew Morton , linux-kernel@vger.kernel.org References: <20260709044334.1741263-1-anshuman.khandual@arm.com> <5ee8783e-4deb-48fc-a4c4-96b02d79a6cb@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: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: A7B272000F X-Stat-Signature: yuq5jkajbnme7yi5z9snspwhfwuhykb1 X-Rspam-User: X-HE-Tag: 1783945921-258953 X-HE-Meta: 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 9vyIAJMe +4IV3ZEMUpaIm3CXjDLp6dNye1tzkS5aaiMFhdpKG0bPvuPeksePURbXRTQjHQvYC7rKXJEZ0MIM8K0Uy09jGzlqF8hzbvjsPrhCRdbSjDnXw2cKE4YqBdZCqnx2B3Nq8cbS76w2nK31Cw/7x1QSqjOEm6GJs/f3UyXG2WJvCJ+d4EkwGxa2NCnbmQUchJXZBlFeQqr6Hfe5hnnkDWcLWx5dvbEzds8Bc+/e1LqM7lxhr+uPo9toyTNxg8LPfQa/bV6o2 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 7/13/26 13:36, Andy Shevchenko wrote: > On Mon, Jul 13, 2026 at 11:30:08AM +0200, David Hildenbrand (Arm) wrote: >> On 7/13/26 04:37, Anshuman Khandual wrote: > > ... > >>> >>> %*phN dumps raw memory bytes and will have different formats on little >>> vs big endian platforms which is not desired here. Debug print here is >>> expected to report pgtable entry canonical value where various platform >>> specific fields can be inspected. >> >> If we'd want to go that route I guess we'd have to add a new specifier that will >> print the pointed number in the size specified by the second argument. We could >> start by supporting 8/16/32/64/128 bit only, no weird stuff in between. > > FWIW, we have hex_dump_to_buffer() for that already. > Right, @groupsize: number of bytes to print at a time (1, 2, 4, 8; default = 1) Does the trick and would have to be extended to 16 if we'd want to print 128bit pte values in the future. -- Cheers, David