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 3D076E9272A for ; Sun, 28 Dec 2025 12:43:43 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id A709D6B00AA; Sun, 28 Dec 2025 07:43:42 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id A27716B00AC; Sun, 28 Dec 2025 07:43:42 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 951196B00AD; Sun, 28 Dec 2025 07:43:42 -0500 (EST) 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 85F3A6B00AA for ; Sun, 28 Dec 2025 07:43:42 -0500 (EST) Received: from smtpin24.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 4C94E188E78 for ; Sun, 28 Dec 2025 12:43:42 +0000 (UTC) X-FDA: 84268846284.24.0AD3994 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf28.hostedemail.com (Postfix) with ESMTP id B0F0FC0002 for ; Sun, 28 Dec 2025 12:43:40 +0000 (UTC) Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=LP6Pi7q2; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf28.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=1766925820; a=rsa-sha256; cv=none; b=1MW2VZuUpi/I655/V+Xq2bca8ZXpreALyU3fPSBeEI/Z3GaznirR91GA/J5yjUh5XlgAQi v28Lgaz7iXh5WBlBPedHuVCUwXbT7qiUrntwkqLTd6JUDVx8eQOQ3T1qtNa6EPe9zRDN9h LaQEflhC8IBY4d2FXZyRc1StADAFYK4= ARC-Authentication-Results: i=1; imf28.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=LP6Pi7q2; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf28.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=1766925820; 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=0zKPan3W2SiqdNPRYPzd7IYJCfxuO94gDNri2EQoJXk=; b=yAppVNl5AAOKQDZGA9IXHXHg3ZgwcWGwY+LRdjZmxMK1zr9SQ8LJ9UHmBCDWEhLtitaWWS xY/DeiTqe950b8SjR1b6kNr0jT2Vi4g6GbvTekow3xSN0LnSucBvF2RhY9yKUDVTZWnUAH yjKT1P+x182zhvmdpL6WGgnUCcB/ufw= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 260F360121; Sun, 28 Dec 2025 12:43:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4F7F4C4CEFB; Sun, 28 Dec 2025 12:43:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1766925819; bh=7cRQHQcJTxCSxc9tvl2G7dMvx0rutizHF89BihPwSeg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LP6Pi7q2igL6PUSX6cq6nr/WZsu2Wb13tJjQ5VlJAGAwLsN9O3iS/edLWoCMW++IP pXmDirq5lPXQLWTWgnKn217//jKO0KdDGFYlWEeT4DKKzQvEQsSAwso468aZvXfDvZ EElsZFcEk7O4YNQTlL0LdCSltf5xVBIifCpETvyNO6S1s+ag4AAjAPXbIzaYDmhp3y eMBhBignxwcNwEskwkSoCFgd479kIB5Fd5n2rm1759zPplZ1aQkf3qL1UCGavX8r0h fcaDmc0VHvF551YRkgh7ytcKd5BKvje5v4AUVoTvEInEZvhAq1WSt2HB3WG/kuS6iL 2/MXl0roCRhPQ== 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 14/28] powerpc: introduce arch_zone_limits_init() Date: Sun, 28 Dec 2025 14:39:44 +0200 Message-ID: <20251228124001.3624742-15-rppt@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251228124001.3624742-1-rppt@kernel.org> References: <20251228124001.3624742-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: B0F0FC0002 X-Stat-Signature: 5m4rs4684o86ub4gkaink9ytnbgoehim X-Rspam-User: X-HE-Tag: 1766925820-89883 X-HE-Meta: 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 fgUXaAH+ jvpQYsD75TW1z0K7w95CjNTG1J0M0CrIQe3yW7E5FIuagpVcZ3RBhY2ur/mWIdelLqRkhgXV0XNCK1aFbuxZxTX5A6sdqf3zurgn+4dN7fIa9DgihxiXDBe7GkQwgkK2tk40Ka6yomTCq1k77wN2jGqG1+0gM6Y9E55JyPwrlCPNXQZjexLrukUZ9eHZuKREmzdR7jtCb/CIgHXsLnG9kAIJm+VOCubuX+BfhnWifvHlaE7hfEusQgzrZC7Z6Wo5yUKa3Zcg6ld2oFu2vDLsAbIVMig== 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) --- arch/powerpc/mm/mem.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 3ddbfdbfa941..32c496bfab4f 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -221,13 +221,23 @@ static int __init mark_nonram_nosave(void) * anyway) will take a first dip into ZONE_NORMAL and get otherwise served by * ZONE_DMA. */ -static unsigned long max_zone_pfns[MAX_NR_ZONES]; +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) +{ +#ifdef CONFIG_ZONE_DMA + max_zone_pfns[ZONE_DMA] = min(zone_dma_limit, max_low_pfn - 1) + 1; +#endif + max_zone_pfns[ZONE_NORMAL] = max_low_pfn; +#ifdef CONFIG_HIGHMEM + max_zone_pfns[ZONE_HIGHMEM] = max_pfn; +#endif +} /* * paging_init() sets up the page tables - in fact we've already done this. */ void __init paging_init(void) { + unsigned long max_zone_pfns[MAX_NR_ZONES]; unsigned long long total_ram = memblock_phys_mem_size(); phys_addr_t top_of_ram = memblock_end_of_DRAM(); int zone_dma_bits; @@ -259,15 +269,7 @@ void __init paging_init(void) zone_dma_limit = DMA_BIT_MASK(zone_dma_bits); -#ifdef CONFIG_ZONE_DMA - max_zone_pfns[ZONE_DMA] = min(max_low_pfn, - 1UL << (zone_dma_bits - PAGE_SHIFT)); -#endif - max_zone_pfns[ZONE_NORMAL] = max_low_pfn; -#ifdef CONFIG_HIGHMEM - max_zone_pfns[ZONE_HIGHMEM] = max_pfn; -#endif - + arch_zone_limits_init(max_zone_pfns); free_area_init(max_zone_pfns); mark_nonram_nosave(); -- 2.51.0