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 E940BC79F82 for ; Tue, 8 Sep 2026 11:55:58 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0FA7B6B0098; Tue, 8 Sep 2026 07:55:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0ABC86B009B; Tue, 8 Sep 2026 07:55:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F05D26B009D; Tue, 8 Sep 2026 07:55:57 -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 C072B6B0098 for ; Tue, 8 Sep 2026 07:55:57 -0400 (EDT) Received: from smtpin17.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 707401A0550 for ; Tue, 8 Sep 2026 11:55:57 +0000 (UTC) X-FDA: 85190441154.17.80DB42F Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf17.hostedemail.com (Postfix) with ESMTP id B02AE40003 for ; Tue, 8 Sep 2026 11:55:55 +0000 (UTC) Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=lpGDXF7Z; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf17.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1788868555; 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=YQfUobdb4z00WEwtnabznk2vNczJUBLHs2sPtjNr3cI=; b=RigEsmBGK9FcXgYAiZrtQQfrQvuYqXM6ux6N9/noIQR0RjGIDIcXmw20cWHdeqj0lWHANu i7qv3tarWawbJbUJaKWj72ZPPXJgitJtJXNi8XQm6nLtgcXyL5XOhcwO5Qhkjt8TPSr02P nILtdragrXkVP203nTQkRfezgsNNTiA= ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1788868555; b=DH18trNJWUce6MVIGAYWUAzyg/pYFNMZasssUTCa6+/nrC2k7bILv9PREc4Plct+HCAai0 5EHBrbBIH8AdygZd/KdssK4l4tJsaoWStL2CSOTUQ8JfxfrW0kP+o9qQ26NfIk5MxboNAj /mhixrcqiUugVaDmz+5rG21jVMwDf8M= ARC-Authentication-Results: i=1; imf17.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=lpGDXF7Z; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf17.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id EF71E60A99; Tue, 8 Sep 2026 11:55:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B96B01F00A3A; Tue, 8 Sep 2026 11:55:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788868554; bh=YQfUobdb4z00WEwtnabznk2vNczJUBLHs2sPtjNr3cI=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=lpGDXF7ZqLHduzl8FnziPOy44BLBHhC2Fw4f0jqmHQkKoysL/bVzIHC+FAe7sHw7Q jkocHRdaF0XzNj4f4PhKK93kmAF0iSVIiVQBbYfZPdmZHT4alxIAbfCODf6JWSb4LO MwoTcpezTjSOf7GShhM+TnQcNElLIb67uyP0XYwKTUG+OCwygDjUkHFMZQEHcinVRQ BQebwXbqAoK2cziX/sxNuAXk6q3CSoAjS+xNfEqMEoKs1lRGDE/xicTO/J4jx762XW F9VTD3V3103VvgiKmAuvnoNaijapfyIllBeaojqtCUKnCJmwj+700uh0TqrbiauV9A cMHAnXdOJcyYQ== Message-ID: <29e6d0d2-cdd6-4d59-aa6f-0073ac63eace@kernel.org> Date: Tue, 8 Sep 2026 13:55:41 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 1/6] set_memory: add number of pages parameter to set_direct_map APIs To: "Mike Rapoport (Microsoft)" , Andrew Morton Cc: =?UTF-8?Q?Adrian_Barna=C5=9B?= , Albert Ou , Alexander Gordeev , Alexandre Ghiti , Andy Lutomirski , Borislav Petkov , Brendan Jackman , Catalin Marinas , Christian Borntraeger , Dave Hansen , Gerald Schaefer , Heiko Carstens , Huacai Chen , Ingo Molnar , Len Brown , Palmer Dabbelt , Paul Walmsley , Pavel Machek , Peter Zijlstra , "H. Peter Anvin" , "Rafael J. Wysocki" , Ryan Roberts , Sven Schnelle , Thomas Gleixner , Uladzislau Rezki , Vasily Gorbik , WANG Xuerui , Will Deacon , x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-pm@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, loongarch@lists.linux.dev References: <20260903-execmem-set-vm-perms-v0-2-v3-0-949b64a9f755@kernel.org> <20260903-execmem-set-vm-perms-v0-2-v3-1-949b64a9f755@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: <20260903-execmem-set-vm-perms-v0-2-v3-1-949b64a9f755@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: B02AE40003 X-Stat-Signature: t1msbuqsb89eqd5yc7689gwx6kj18pp6 X-HE-Tag: 1788868555-936552 X-HE-Meta: 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 YWaOMZ9z S0yBNU7UwLxdY4jQlZZ0xjUXm7z4+ZPnsw2f2dzi0YEPb7OzF9pdCpTKb0/A6HeJs81I2vBv07GMqff/0zVSsfCEElwC6xw9rspdznvrUWaCkOd7VRO52oNkn8P7HwZup9SzqtuHiKbvFDjmIocRIJ4pxxvcV/SYL9FX3qRps2Tz4lLdkMzFDXFBVDqTXMpmih8YGVQXii0sAKHOADOgadLKG6YnXc0ar5I6hgCnOmBwubg4oyx2WZG7De5moGfKAbYoIt5RsC0AimKf1mowi9bnFuroOZWOwaVMxHu91Hbzf2Lgm/Wes8Q3OqHMV5xiACWAsB+adTpGVUtg= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 9/3/26 11:28, Mike Rapoport (Microsoft) wrote: > When set_direct_map APIs were introduced by the commit d253ca0c3865 > ("x86/mm/cpa: Add set_direct_map_*() functions") the single page > parameter made sense because the initial callers (vmalloc and > hibernation) had sets of unsorted struct pages that required changes of > their mappings in the direct map. > > Since there is an increasing demand for direct map manipulation and it > is also desirable to be able to update larger physically contiguous > mappings, for example an entire large folio, extend set_direct_map APIs > to receive number of pages parameter. > > As there is still only a handful of callers, change the existing > functions directly and update all the call sites rather than adding > wrappers for single page case. > > Signed-off-by: Mike Rapoport (Microsoft) > --- Acked-by: David Hildenbrand (Arm) -- Cheers, David