From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 696BFC79FA0 for ; Mon, 7 Sep 2026 17:00:43 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6362C6B008A; Mon, 7 Sep 2026 13:00:42 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5E7376B0093; Mon, 7 Sep 2026 13:00:42 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4D5DA6B0095; Mon, 7 Sep 2026 13:00:42 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 264306B008A for ; Mon, 7 Sep 2026 13:00:42 -0400 (EDT) Received: from smtpin26.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 96883401F8 for ; Mon, 7 Sep 2026 17:00:41 +0000 (UTC) X-FDA: 85187580282.26.5EAD3E4 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf13.hostedemail.com (Postfix) with ESMTP id DACEB2000B for ; Mon, 7 Sep 2026 17:00:39 +0000 (UTC) Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=hYolw952; spf=pass (imf13.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1788800439; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=3jNN8pG7nsJKvuu9ANRbCsQdps+qC9dqn17QiKiem+c=; b=2ytk0i8/+6DOYIbK5k+/sQB6z/kvswNx91ZucgABAr2FcSpje95tn4J0b8GnbElUocekub KMZhgL+oaxMB0eXzE7gE0iLou/hWvcYwBKG2NkyzylJ1ok9cHUxKu3koNpoZV5lIokXPxE I0zEafycifdaLh7xhZYpWtDdE0rSzTc= ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1788800439; b=MRSjjBTzozLZuUsLzjDyB/pvIkszfsoh7tNK3Fd/w0kC2/96B1PZVAkU8K2bvBPtqumuZ2 HrSE6FY3jrZpqQHT0s6dzXfwGYeatXwbPcrzAG+neJDblZNpTPGxQJ+Pn57scQRY4+l7qa LQuNxOW8NDRb9mxxlzBLv3/EP1MYuR0= ARC-Authentication-Results: i=1; imf13.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=hYolw952; spf=pass (imf13.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 69D56601DB; Mon, 7 Sep 2026 17:00:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B7E991F00A3A; Mon, 7 Sep 2026 17:00:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788800439; bh=3jNN8pG7nsJKvuu9ANRbCsQdps+qC9dqn17QiKiem+c=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=hYolw9520Za9hO3EyvE0zBizB6ALcYPXUMQG0dlkdLyTwx/nKg0X0deEkyz0fRoRH DKa4FpGqmH6OWN6PPPhA3WfT5Edf75IPlH6gPyoXMPhmxQMtvo5SaDatWsBydJ+YgR zeDYPULoOyabLj99zjZjGHtBatBhFDjZOiMo9OexutSaz+KTuhUwouau6GxaGZ9vQ0 JoIIdQ9RDMWnfOhBeHrYTXCPnf2xFYNJSJdDmfVCK7//Zz/fEpBtyoaKunt5z0QoPr 82XnNX7g0Q5NaoreGpIGIRanvsx1PKBgEjo8ioQ40lkoTj7wNprNdVUWxCzhzOmKDz PT+xQNVVkTqMQ== Message-ID: <2732913d-dbee-4726-aaad-c7c60b6c62fb@kernel.org> Date: Mon, 7 Sep 2026 19:00:31 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm/huge_memory: bypass THP tuneables for huge pfnmap mappings To: Zi Yan , "Lorenzo Stoakes (ARM)" Cc: Andrew Morton , Baolin Wang , "Liam R. Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Usama Arif , Peter Xu , Jason Gunthorpe , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Cedric Le Goater , Saravanan D , stable@vger.kernel.org References: <20260827-hugepfn-allowable-orders-v1-1-94819c8807c8@kernel.org> <4743f22a-c24f-4f93-80f5-3260f29bd410@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 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: DACEB2000B X-Stat-Signature: rhyk9wtxm7i8dkspj6wz6spdm16gdion X-HE-Tag: 1788800439-724192 X-HE-Meta: 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 YScUQcph 468F2sFqsXBVCmnF9oreUP2dWWddqqPadEcsWE0JkgsUJAw2ew8/ue6+/NhPaADLjan8xJDIiUZL4q8KDjYgFdt+0YCrcc8EE5QSMvuFeeEc97s7CSlzdIoitCLIaZ34kDB+XB+mEuI0LmphFRNUaN/ehyPolAMMOAGDVTUwN6+bXtsj82KpxnhAlaGZNJ6nRW2kHGkshcnXsUe4UTfc5omMQXhjYK9fjqYi2F54+6jacQNml9ir+WE61BIvrer8HT97jjdOv8jDKKVsAEf80SbwXJjNMtk7TihVd+so4vr2WOf1X5mHO8/2AlA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 9/7/26 18:58, Zi Yan wrote: > On Mon Sep 7, 2026 at 12:30 PM EDT, Lorenzo Stoakes (ARM) wrote: >> On Mon, Sep 07, 2026 at 06:19:30PM +0200, David Hildenbrand (Arm) wrote: > > Probably worth putting it in the process documentation. Always resend if > a patch has any change. For things like fixes for spelling mistakes I don't really mind. So "always" is a strong word :) But yes, such stuff will be documented in the future. -- Cheers, David