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 5EB67FA3729 for ; Fri, 2 Jan 2026 07:01:25 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C27516B0092; Fri, 2 Jan 2026 02:01:24 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BF2996B0093; Fri, 2 Jan 2026 02:01:24 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AF4F46B0095; Fri, 2 Jan 2026 02:01:24 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 9A1376B0092 for ; Fri, 2 Jan 2026 02:01:24 -0500 (EST) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 6684258892 for ; Fri, 2 Jan 2026 07:01:24 +0000 (UTC) X-FDA: 84286127688.01.AF31853 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf25.hostedemail.com (Postfix) with ESMTP id D7FCCA0012 for ; Fri, 2 Jan 2026 07:01:22 +0000 (UTC) Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=YfFbGR66; spf=pass (imf25.hostedemail.com: domain of rppt@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=rppt@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=1767337283; 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=pXj0Z2NgAtnlunEa9AvDDLLh6y0q3hS/njeAcboUK1o=; b=lBDyd22rGa1vbiUcMSJW7sn1GrTlYpa1ojkaO85Y9IX47ebxRVOU00X1wNxzLQM5YSwbJC pD31VQf5V4+FBth7pmBU0g5OiKNfau1zRTxNj3YBnbJT/dxOkQk3gUoALCHXruqdxSf5bL zRsK9fVVaGCidCkubu/5+TOzWaODU2w= ARC-Authentication-Results: i=1; imf25.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=YfFbGR66; spf=pass (imf25.hostedemail.com: domain of rppt@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=rppt@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1767337283; a=rsa-sha256; cv=none; b=05c4CSDwcimZaR97gFvB+zE9SS3+vRfU0DLee/VdNFm6chdGqwHICEh3UoRGu5hWFqKhEA uxmvWplL34xUpMC6940m0TXnAji1le+XNUZdyHQPyycE7RWiG662euFMJwgw24POY264Xq FIfQmo15NwP+GwW/LHF5l9DbawWEQu4= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 063C7439EC; Fri, 2 Jan 2026 07:01:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0E256C116B1; Fri, 2 Jan 2026 07:01:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767337281; bh=djQarGwsnsMGImsgSQVJ5sD5jo+ZigjiDeQZakHIJZw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YfFbGR66VHayErTkQoIoUIc4G3/Zokhn15LvFAqjzKw26utOu1LBn48hs2H6HzNQq enWDeSBA/K3oa8124S39Ky2QzRfQWKFy5skfNoCEkG9sz9vKEVoMX6gEHdOtbCXbst YovEdBmAC4uGLaHGNAqP3BqXeZF+EKxoW8SDO9IcHD6qwesn+Gli/x6/TpHAYsUlrD UCxGtUCULcfUxhXrs9KtImo/ip7nUbo9TQd43s1ekjsaSWhD1ejl+EXFJWf86KxJTp WhffTvUE+ThhBNL4rEwUFZ6nXbB9jltND/rGE7Zw/xtewRIoZJM55k7N+y1oDTnXyg wl/J8tjy8RWJQ== 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 04/28] arm64: introduce arch_zone_limits_init() Date: Fri, 2 Jan 2026 08:59:40 +0200 Message-ID: <20260102070005.65328-5-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-Rspamd-Server: rspam02 X-Stat-Signature: k5njrstzmygrkxeuz33foxmww8zddwg7 X-Rspam-User: X-Rspamd-Queue-Id: D7FCCA0012 X-HE-Tag: 1767337282-695206 X-HE-Meta: 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 z3ntGpjN xu913vsNN71bVWeE= 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. While on it rename zone_sizes_init() to dma_limits_init() to better reflect what that function does. Signed-off-by: Mike Rapoport (Microsoft) --- arch/arm64/mm/init.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 524d34a0e921..06815d34cc11 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -118,7 +118,21 @@ static phys_addr_t __init max_zone_phys(phys_addr_t zone_limit) return min(zone_limit, memblock_end_of_DRAM() - 1) + 1; } -static void __init zone_sizes_init(void) +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) +{ + phys_addr_t __maybe_unused dma32_phys_limit = + max_zone_phys(DMA_BIT_MASK(32)); + +#ifdef CONFIG_ZONE_DMA + max_zone_pfns[ZONE_DMA] = PFN_DOWN(max_zone_phys(zone_dma_limit)); +#endif +#ifdef CONFIG_ZONE_DMA32 + max_zone_pfns[ZONE_DMA32] = PFN_DOWN(dma32_phys_limit); +#endif + max_zone_pfns[ZONE_NORMAL] = max_pfn; +} + +static void __init dma_limits_init(void) { unsigned long max_zone_pfns[MAX_NR_ZONES] = {0}; phys_addr_t __maybe_unused acpi_zone_dma_limit; @@ -139,17 +153,15 @@ static void __init zone_sizes_init(void) if (memblock_start_of_DRAM() < U32_MAX) zone_dma_limit = min(zone_dma_limit, U32_MAX); arm64_dma_phys_limit = max_zone_phys(zone_dma_limit); - max_zone_pfns[ZONE_DMA] = PFN_DOWN(arm64_dma_phys_limit); #endif #ifdef CONFIG_ZONE_DMA32 - max_zone_pfns[ZONE_DMA32] = PFN_DOWN(dma32_phys_limit); if (!arm64_dma_phys_limit) arm64_dma_phys_limit = dma32_phys_limit; #endif if (!arm64_dma_phys_limit) arm64_dma_phys_limit = PHYS_MASK + 1; - max_zone_pfns[ZONE_NORMAL] = max_pfn; + arch_zone_limits_init(max_zone_pfns); free_area_init(max_zone_pfns); } @@ -319,7 +331,7 @@ void __init bootmem_init(void) * done after the fixed reservations */ sparse_init(); - zone_sizes_init(); + dma_limits_init(); /* * Reserve the CMA area after arm64_dma_phys_limit was initialised. -- 2.51.0