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 AD029D2502E for ; Sun, 11 Jan 2026 08:22:42 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1E96E6B0095; Sun, 11 Jan 2026 03:22:42 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 1B6F36B0096; Sun, 11 Jan 2026 03:22:42 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0A2FB6B0098; Sun, 11 Jan 2026 03:22:42 -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 EC9DB6B0095 for ; Sun, 11 Jan 2026 03:22:41 -0500 (EST) Received: from smtpin22.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id BB3B91403A4 for ; Sun, 11 Jan 2026 08:22:41 +0000 (UTC) X-FDA: 84318991722.22.A777427 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf20.hostedemail.com (Postfix) with ESMTP id 370031C0004 for ; Sun, 11 Jan 2026 08:22:40 +0000 (UTC) Authentication-Results: imf20.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=lw1lU3Ew; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf20.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=1768119760; a=rsa-sha256; cv=none; b=JHQ/asKGxq009m8oO0TJz2RCcUqkPilLeGdqVGoxPoe5VemcHEmcQAscezo8N42cKk+sRe UvdZLxG7Lq9FvAKubdacsob9MHz5/omqPojl1O0WnlHMg8F1oXOP8FyUNFLWTN+YgR79SD EiR+FsaxEGAwyaM+MbMy28poGxx1UsQ= ARC-Authentication-Results: i=1; imf20.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=lw1lU3Ew; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf20.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=1768119760; 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=wI4EKk63DEOMR7BMzBD87jkv08kcDwtkYy7vnj1STHMColhk92Kx0NUDCASgb81hhxyTCy bnVLHCDcvZAT3UqzefpGDwPqfYplvVdGQALIFGFnP5hFKH82EYU9MURfb0zckraBlpU1cm 40q9Wy0RK197NiUTxtAFQvlmTnbdV+k= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id A5E5D60129; Sun, 11 Jan 2026 08:22:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BA77CC16AAE; Sun, 11 Jan 2026 08:22:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768119759; bh=djQarGwsnsMGImsgSQVJ5sD5jo+ZigjiDeQZakHIJZw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lw1lU3Ewc+dtv3vDYJfQvcR3SFOO3fNdQZbUcukOU8uBYk43EPjoMNLHvS+ZVTXFY kFiAwsUS0cL97IqVcj9lfrxTQhOT2vwhsvZsYZ978UiUZIG/ymSeKzXUMCvGav2t3T vM5MZTJCCtREKdgx/Ctorld3QmD4G38UlxAV/FKOUGToSqJ9W/z041Qg3ZqaKRg0C6 0pqyd0jXlvxFbMeJVINiPfxlP57E5VlMoy0DwyzLHcSHXAWp+XP+b3aDLtpYYqQcns gv9MGzAi0TPrvCroxyxabPW1rlLFsb8P84S1OTpkxsCAf7ZizWZpxO+8YyP01fxPJX jR8BRtnoVff+g== 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 , Klara Modin , "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 , Ritesh Harjani , 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 v3 05/29] arm64: introduce arch_zone_limits_init() Date: Sun, 11 Jan 2026 10:20:39 +0200 Message-ID: <20260111082105.290734-6-rppt@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260111082105.290734-1-rppt@kernel.org> References: <20260111082105.290734-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: cn9keigr7o9yow9r9anai8szubxhwmkj X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 370031C0004 X-HE-Tag: 1768119760-653418 X-HE-Meta: U2FsdGVkX19ZLNvd+g2DwEbwADA8HFuZhHYWti55TNnlArl6dl9hDRFI9OjswSlUPNrbZYlLwVKib1/m6S5CRMhg9F5hkRUezc1tpAGY26b3ZO4zj1BhHnNEgTAqzHF0FL/fHuTUSXskLS6qwQEL9U/07WM/E+US0FiNEKdYz8Wet51hfYiND3ynA0+p4h6IywuY1fXBJ4p1izGnXD7aQIdtfqZCgvi6hhBLswGWajLIiqVgvA5advk1LjcaWD7w/rA++MCiDNDOyE0gubjjWiaMlnxrenZ2hsuXAquqVqYnsKcVnrHd3vpUu4ZzYppGpb27DTeSs/pcIdgI+i5jH0kROGYNczv2NrnhSmZY7JwN4dKs4TRAPbWy0t4Nn9dr/nWpVnVU5z42W0w1/MdtEGCm2R/XIJht9noloFv+zku/batJGZGHgzd3ZBVcA9zuxcgMp7iTOfUx7SR86AWKzIEzpkzwqa7euRSweaiJ5abbyE1jrzkqDVCA5B8esjIh90QxtOSuXNQEP0Pocex1L+0pBNqXCWL4I9r2VOFrS6IWFnJsOvotTEO3bW5Kp9Jq74ZLIvwPBeyoPipt4/KEVCrFg09OQbqAR1M+14R9NBMOn9fAYSdsmOR7iqlh27IkE5uKWFC0K5/7OgYMhuUKxcYz8BZjzl+RD/W0+sawdAARAk65v1ySjGrBJeaD5u0rZot+0nVP5i3dINIrN86fsqK1wzv0t18LYj8P2s/3flplPkI4N8B8VTQlNJoXvFMgGymVBJZCG+QBLHTsJP6CuoqP+Deurm3Gm8XHy1Jp+irWTBB9GOlrFzhLu7Y3mHrdMAmoakf8nuKNXJIW7r8GZnoGc5GQolJmHlcqhmpcO5eFJW1vItjZ7mVAykViRvql+RdWjntVTxERRTyUAbHmoyCaBTIs9uXfQVLnB3eNuGkXeskEkTNSKcf45n1W+DgAcPhwYGLMys9EX/7TrOi EU60Vi6O +Cmog4GbFCb8JEuGI4dCzz4/uByrqvUNZn+MORa+GS4VWg7SvQzj+O8GYmkScDtXzpCsm28yL4iMmSLZtCubdoUanHZIzkvE8HPjwt/YRsYyyDooycT9V3WLK6OTzLYriDZJqFcsjf5gFS0z6qk/pR9levMHj5YYVYYDB6cE8O1xlbmf1JV0QpsD+paR1sgkO66eMYEbPykr/D/5Xd+BdzHPrQ6k0+2h1eOXCsKVLHlGQ/6mNLHsa3aDZ/T45KXCXDz4yQozeUiR8HZehX8vZ7g032iJxiATU0zzwfrjbb9pIy8gIKP2ic1tMb2XNCT6J2YQ5Mt4ZtN5MIlMk4TYv4ijW0VHe6hi45Iko 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