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b=n+vkMhPyIyuFnGduuFUtqLeRCeKmAEwYuzvOos0KdULgl4JlzF4Pk0PvP9tCUiP2H 6itvULtvqRc04eUgGoSDVBfb7GA/GXUmtRUsL4iMPSOym80x2gluNa03GQQ08dqrGE zBBqRWAUf1eAbclt9Lkx699Dq7Pnbl3YF8Iv1QlxotN++HBFx6j9aAOyv1LabdS5N+ BFChBRXw5cPkJB/Eg6b2wkOFc+wo5V+747z4WKiKu6kYRH41ZFH6lpvvlQ3X3j7usf d1wCn3YtLNQwGAz06j/rFQYhpYn1+Gj5y2of9c5vC0IbCWDJD5y55O3YaXOxdZhdmT /pclZ4ckYIi8w== Message-ID: <5c5dfe82-0b51-41dd-bfce-2ad80fbf2ff6@kernel.org> Date: Thu, 12 Feb 2026 19:05:09 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] smaps: Report correct page sizes with THP To: Andi Kleen Cc: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, akpm@linux-foundation.org, willy@infradead.org References: <20260209201731.231667-1-ak@linux.intel.com> <94a21bda-5677-4949-a1df-3f0d90348021@kernel.org> 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; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: DDA22180015 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: hhiqq5ys4mdrkczdaof579m3dw9ju8id X-HE-Tag: 1770919513-75929 X-HE-Meta: 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 103UJKi5 lxl1STaeG3W4vs0fnKoMtiQGRBTfjzURGCo+QKIwFHnGyoHQ4so+NJ29xk+LzvjYW9oqsgK9gCEB4c5XXdI6O3kzbRwvwAPSfjZXRBPtgKF0sCuSVWNDjf3ap9b4JLhPMxr7LxlyvkAqj/AWTQxvxIlEc8alJUorbb2VdPCtFWkR7kKXPFszfO+/dv3TCnGlzV5TI5kEIDLvKYT7/Rb7PbFDJuiCFoEz4Q2bi+n7R1m2bKwqc09y3rMac/gsxO9RFZgVw 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 2/12/26 18:58, Andi Kleen wrote: >> We have AnonHugePages:, ShmemPmdMapped: and FilePmdMapped: that tell you >> exactly what you want to know. > > .... if you know about it. I personally wasted a lot of time on it > because we trusted a lie. It is confusing, I agree. I don't know why we added it in the first place. > >> >> Especially the mixed thing is just nasty. >> >> Once we go into cont-pte territory (or automatic pte coalescing by hardware) >> it all gets confusing. > > In this case it can be extended to more. > >> >> Sorry, NAK. > > Okay then just remove the page size if it's fictional outside hugetlb anyways? I'm sure that would break some tooling. -- Cheers, David