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 00075EEB57A for ; Fri, 2 Jan 2026 07:00:42 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 659266B008A; Fri, 2 Jan 2026 02:00:42 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 624126B008C; Fri, 2 Jan 2026 02:00:42 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 527296B0092; Fri, 2 Jan 2026 02:00:42 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 41CFF6B008A for ; Fri, 2 Jan 2026 02:00:42 -0500 (EST) Received: from smtpin15.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id C338958884 for ; Fri, 2 Jan 2026 07:00:41 +0000 (UTC) X-FDA: 84286125882.15.D079C73 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf25.hostedemail.com (Postfix) with ESMTP id 314F7A001C for ; Fri, 2 Jan 2026 07:00:40 +0000 (UTC) Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b="ApU/C+wN"; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf25.hostedemail.com: domain of rppt@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=rppt@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1767337240; a=rsa-sha256; cv=none; b=TxfZHQmrnVu1NxJejnTlscRc9+Ul+jY3ZwWyPADHOWtZ/z15Oax7W6SzlGrOqmQbKkNm2k vU4mRxPNxEC7eGbitGdt3vQNfDXv7aoIZfBZJqCvIgNevAVi1xdli4M9TEOPx2Xo1oHjmG 0DuaxDCj6v0orTygEu1cRLfz/zfPpgc= ARC-Authentication-Results: i=1; imf25.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b="ApU/C+wN"; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf25.hostedemail.com: domain of rppt@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=rppt@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1767337240; 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-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=hMSeghU9mFb/iSGNjAJ2/WETrT3nayTRWjrK9prgUyE=; b=c5UOxa1x2FZWKk07zVCpEazp5u7TptyccwjHAKMVw83jfRhV2igdMAbSwN1X0xFtAHs9V5 ghiiAQJ7eaba/VJLRVqvmOaBFa4S3bQc35dA4tCG++AywTPScPy0yx//IKae5oWAGhOIpF 35sjSXqtTbvTQB/MAm59nNnQxRTrw30= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 22B9160125; Fri, 2 Jan 2026 07:00:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F1F09C116D0; Fri, 2 Jan 2026 07:00:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767337238; bh=KgO7SaOs49km6xau9XjjDmzydPHNaHbDsqRu17wGsEs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ApU/C+wNb4idNTK1zz1rLmf7qMnQiTC69e5uyInO+Kw/+8zgij+cWb8B1RufqXU26 1wwAkDpliKwcZM980+Xgpsrz9pj1f3b4c4DAWujjPkDCfQWq4BkvD/f8FippBrzSQO KbiqOWCGO+PDtGqsU79y82rc/RtNyo6RJJXmHSxwe5v1EVVeniyX4YJ8VYClntcefc 6bNEl/xqs/e7MJSfTN3oSKRvHYgLidvtUF3HM0HkqeXsKG9V3CNaMeRVAp10jZFrHR a2+yXy2rd/ds/cJTsRv4zQKRp7NOtOqrhkbdkQHjNFRSNKPR8+JeTwPjQchjqqMdSB O39qW/PrqZb6w== From: Mike Rapoport To: Andrew Morton Cc: Alex Shi , Alexander Gordeev , Andreas Larsson , Borislav Petkov , Brian Cain , "Christophe Leroy (CS GROUP)" , Catalin Marinas , "David S. Miller" , Dave Hansen , David Hildenbrand , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , Heiko Carstens , Helge Deller , Huacai Chen , Ingo Molnar , Johannes Berg , John Paul Adrian Glaubitz , Jonathan Corbet , "Liam R. Howlett" , Lorenzo Stoakes , Magnus Lindholm , Matt Turner , Max Filippov , Michael Ellerman , Michal Hocko , Michal Simek , Mike Rapoport , Muchun Song , Oscar Salvador , Palmer Dabbelt , Pratyush Yadav , Richard Weinberger , Russell King , Stafford Horne , Suren Baghdasaryan , Thomas Bogendoerfer , Thomas Gleixner , Vasily Gorbik , Vineet Gupta , Vlastimil Babka , Will Deacon , x86@kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-cxl@vger.kernel.org, linux-doc@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-um@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, sparclinux@vger.kernel.org Subject: [PATCH v2 01/28] alpha: introduce arch_zone_limits_init() Date: Fri, 2 Jan 2026 08:59:37 +0200 Message-ID: <20260102070005.65328-2-rppt@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260102070005.65328-1-rppt@kernel.org> References: <20260102070005.65328-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 314F7A001C X-Stat-Signature: 8t9taa4br9akdachw6p1957z8rc5k11m X-HE-Tag: 1767337240-889970 X-HE-Meta: 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 e4fjsgaB STlYGcOLewwFPcZOAM0u5hTLWV27h3OxdhakjHGPUIwZYvAO+8e7I42q5ejGhnEYUj22ojVYx6hiwczThGIpHi/PMyrWhN3jsklembn0wLiYTZ/WeIpqyJpQQ450P0fhjfr1Iy9jUmIdBr/nJBnxrvBOuLcaIMCylfEO5/lOdB20DKqD508WC5fRMzxZ0zkhWDx/VEDGWHrl2CD9dm3fP3yuNp7HmmRCI4scEFzMVQ+k+Z7lSwryUuyzfHUkowQZZG4YeO/Ltu1QssOHzAIeNdtipZ9w5sFzZwx0vvjBy+8wW/o4uYeaBvX+PeWu9J/eTMT94T+U5VaRO0RGOxGhedmM/Cg== 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: From: "Mike Rapoport (Microsoft)" Move calculations of zone limits to a dedicated arch_zone_limits_init() function. Later MM core will use this function as an architecture specific callback during nodes and zones initialization and thus there won't be a need to call free_area_init() from every architecture. Signed-off-by: Mike Rapoport (Microsoft) Acked-by: Magnus Lindholm --- arch/alpha/mm/init.c | 15 ++++++++++----- include/linux/mm.h | 1 + 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c index 4c5ab9cd8a0a..cd0cb1abde5f 100644 --- a/arch/alpha/mm/init.c +++ b/arch/alpha/mm/init.c @@ -208,12 +208,8 @@ callback_init(void * kernel_end) return kernel_end; } -/* - * paging_init() sets up the memory map. - */ -void __init paging_init(void) +void __init arch_zone_limits_init(unsigned long *max_zone_pfn) { - unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, }; unsigned long dma_pfn; dma_pfn = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT; @@ -221,8 +217,17 @@ void __init paging_init(void) max_zone_pfn[ZONE_DMA] = dma_pfn; max_zone_pfn[ZONE_NORMAL] = max_pfn; +} + +/* + * paging_init() sets up the memory map. + */ +void __init paging_init(void) +{ + unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, }; /* Initialize mem_map[]. */ + arch_zone_limits_init(max_zone_pfn); free_area_init(max_zone_pfn); /* Initialize the kernel's ZERO_PGE. */ diff --git a/include/linux/mm.h b/include/linux/mm.h index 15076261d0c2..628c0e0ac313 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -3552,6 +3552,7 @@ static inline unsigned long get_num_physpages(void) * free_area_init(max_zone_pfns); */ void free_area_init(unsigned long *max_zone_pfn); +void arch_zone_limits_init(unsigned long *max_zone_pfn); unsigned long node_map_pfn_alignment(void); extern unsigned long absent_pages_in_range(unsigned long start_pfn, unsigned long end_pfn); -- 2.51.0