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 D0992CD4855 for ; Tue, 12 May 2026 07:48:59 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 40FAD6B0099; Tue, 12 May 2026 03:48:59 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 3E7726B009B; Tue, 12 May 2026 03:48:59 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 2FD566B009D; Tue, 12 May 2026 03:48:59 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 1E1146B0099 for ; Tue, 12 May 2026 03:48:59 -0400 (EDT) Received: from smtpin09.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay07.hostedemail.com (Postfix) with ESMTP id D65911603CA for ; Tue, 12 May 2026 07:48:58 +0000 (UTC) X-FDA: 84757991556.09.9048555 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf11.hostedemail.com (Postfix) with ESMTP id 0DE9C4000A for ; Tue, 12 May 2026 07:48:56 +0000 (UTC) Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=uCa1nNIK; spf=pass (imf11.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 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=1778572137; 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=OVl3bUdeJ15anFyx5QHjuqbnYaSNeBHCDnvW1zOH62Y=; b=D7oGla2FubPbU6u9owPr0w3BkSeiUDdAZkAD/ALfIaSDozLIw640o3U/og0iATwwhkSTtA DKTyJvwL1KXGkmWtLVh+mmL1N+OJUkooQ9fTrX9Vmy0ZHYSYCd3I2X+7ywb5TB1TG8FoZP E2Iptf2hwdhsEi6OH0MVxTLGvg+Qchs= ARC-Authentication-Results: i=1; imf11.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=uCa1nNIK; spf=pass (imf11.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1778572137; a=rsa-sha256; cv=none; b=7aGB2O4pCMr2kBxrGrfaMgYaUt3XHC3SRikHHNdOlWgjt/YKBV7+DOJNonjnmFW35N/1BE xstV9gKiK9ycLO/AsGBAHMhfpsBbqAQe+rlOHjAXZDwh8RPCZL7QT32ievsDFfnyKj0oOz upFZ3J9UuqttMtQ5TSI7YOEEY7dwi60= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 1E3DF4413C; Tue, 12 May 2026 07:48:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A162EC2BCB0; Tue, 12 May 2026 07:48:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778572136; bh=W1sWVav77uChxJzFCxQ1pVlTmhfGKv0xL+Q/RQCskXs=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=uCa1nNIKd5PutJrooTknPXUs80TLQpe5mDuqGyg3XdKeFcMgbrXW4uhM0VlL8QJAS tQkUOtlMj9URZs76ee1yVbbtMvlzQY/vQl4CvVAEqVWWEOBDxx1clD350rQubg+2Ur bViQdkGWZkA+laQ9XhWC5TXa81qIP9c404lIrdeEKWrXAez/FqMegKBkgXZHVqUk+U XOWjtI2YE5PNbOeJb/1H+HvjlvpCrQa/1ySqbQrMKQMu4fY6jDFEk9ygBnlEMUbuPa rr/nC0VGKvcPvc6GUqQaHH8BlFsA9sqw1CPDYVOT88H9nLO9WdrbESu/nYgX1gy7kh NH0TPCI2BTCug== Message-ID: <0edd94cf-0895-4f49-8afe-44651681965e@kernel.org> Date: Tue, 12 May 2026 09:48:50 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/8] mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 1) To: Michal Hocko Cc: "David S. Miller" , Andreas Larsson , Mike Rapoport , Andrew Morton , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Sven Schnelle , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Suren Baghdasaryan , sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, linuxppc-dev@lists.ozlabs.org References: <20260511-bootmem_info_prep-v1-0-3fb0be6fc688@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-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 0DE9C4000A X-Rspam-User: X-Stat-Signature: chjt44561rrgitij8m8ooh3m81h8iuub X-HE-Tag: 1778572136-374655 X-HE-Meta: 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 HrzB0UYa ma1Lua5DQbtxF3cpkWByhhbWha847Lk9v8XH4mDopjuZw4Fh6+CD4oDMryHVcqZ27V1La9AdNbM2JrkRHDEsc/KvPiHVXs/OEt4l2tHzuFCGhCyXHDkzpQWHRgHv0Q8n6fumlPacY39eErDt5v6PDsFl5S6xebBfkn4iBHMy+nQNSODXXzwTY/HJYtcVqG3/3RWsi4Wef4hsAKKKhwemwRCfbvVc3xh2T8Wg3/J6u47GJg3BbFlolVPkAIThFX7fB3LlDBM9iuWCS8BvfnyMmN5Q4+44sTk6O7GKFk8Uw93EK90sxhHOJM2wsH0Ba/uTEcrxHW2QnGNf9T92+OcZp/voqmOUAahvO5H3vpmxbhkU6dYhU3SP6PNfQzrz2/jFWpXyPVxJRIvM3GHI= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 5/12/26 09:46, Michal Hocko wrote: > On Mon 11-05-26 16:05:28, David Hildenbrand wrote: >> We want to remove CONFIG_HAVE_BOOTMEM_INFO_NODE. As a first step, >> let's limit the remaining harm to x86 and core code, removing >> sparc, ppc and s390 leftovers, starting the stepwise removal by removing >> and simplifying some code. >> >> Once a related x86 vmemmap fix [1] is in, we can merge part 2 that will >> remove CONFIG_HAVE_BOOTMEM_INFO_NODE entirely. >> >> Tested on x86-64 with hugetlb vmemmap optimization in combination with >> KMEMLEAK, making sure that the problem reported in dd0ff4d12dd2 ("bootmem: >> remove the vmemmap pages from kmemleak in put_page_bootmem") does not >> reappear -- hoping I managed to trigger the original problem. >> >> Heavily cross-compiled, but let's let build bots run on it for a bit. >> >> [1] https://lore.kernel.org/r/20260429-vmemmap-v2-1-8dfcacffd877@kernel.org >> >> Signed-off-by: David Hildenbrand (Arm) >> --- >> David Hildenbrand (Arm) (8): >> sparc/mm: remove register_page_bootmem_info() >> mm/bootmem_info: drop initialization of page->lru >> mm/bootmem_info: stop using PG_private >> mm/bootmem_info: remove call to kmemleak_free_part_phys() >> mm/bootmem_info: stop marking the pgdat as NODE_INFO >> mm/bootmem_info: stop marking mem_section_usage as MIX_SECTION_INFO >> s390/mm: use free_reserved_page() in vmem_free_pages() >> powerpc/mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE >> >> arch/powerpc/mm/init_64.c | 8 -------- >> arch/s390/mm/vmem.c | 3 +-- >> arch/sparc/mm/init_64.c | 20 -------------------- >> include/linux/bootmem_info.h | 1 - >> mm/Kconfig | 2 +- >> mm/bootmem_info.c | 25 ++----------------------- >> 6 files changed, 4 insertions(+), 55 deletions(-) > > Good clean up. Feel free to add > Acked-by: Michal Hocko Thanks! > to all patches but kmemleak one which I do not feel qualified to judge. It's black magic to me as well. I tried to test that scenario in particular and was not able to trigger the problem. -- Cheers, David