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 5BFF5E92724 for ; Sun, 28 Dec 2025 12:41:23 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 99B776B0093; Sun, 28 Dec 2025 07:41:22 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 966126B0095; Sun, 28 Dec 2025 07:41:22 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 868CD6B0096; Sun, 28 Dec 2025 07:41:22 -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 73F906B0093 for ; Sun, 28 Dec 2025 07:41:22 -0500 (EST) Received: from smtpin13.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 16196188C54 for ; Sun, 28 Dec 2025 12:41:22 +0000 (UTC) X-FDA: 84268840404.13.51FD0AF Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf27.hostedemail.com (Postfix) with ESMTP id 606E140004 for ; Sun, 28 Dec 2025 12:41:20 +0000 (UTC) Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=cnFF8D+y; spf=pass (imf27.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=1766925680; a=rsa-sha256; cv=none; b=g65J1x6NNbj07CoVVMv8DnTPmBgUckA4oMeQoXoOGOtiC7DGnPW5CsdHu0b7tM3XGTxUZK GpGpAp7fFI9oUZPVFp9Wo6Apcl7u3seZkaygt86gZBd4ipGlB356IilcC4Fv5bEPotbZ00 3ggVDDOvUwlUed0gNkkgzuLZTJrRG84= ARC-Authentication-Results: i=1; imf27.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=cnFF8D+y; spf=pass (imf27.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=1766925680; 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=VinsXsxqReoDjEihin1EBEASDucblXGJhYW6LZbUud8ZcGe17YoVBSuiMbavN/0Qm6q+Uw 2LzBJgERHUJvyvtj5G0Pr+nd+XjYnfjb3L2EJAkGF2esaBljvQOjBWZZlNkVyYiq7gbTcJ XRvLzcsgxs2EMRpqVirf9I+pBqc2Edw= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 8B1EC40E20; Sun, 28 Dec 2025 12:41:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DDF3EC16AAE; Sun, 28 Dec 2025 12:41:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1766925679; bh=djQarGwsnsMGImsgSQVJ5sD5jo+ZigjiDeQZakHIJZw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cnFF8D+y5gEh9w2QuJR83XMdbXSjXAklg3EQgCL1XvXDAGgxiYyJJ66WbBKyqdzb8 dcyzX70MvM4Q6Cd45SRj2nfZpZjaj9QgrnQH66vqPkpxUq4Vs1/VDh58aAfkC/+PZ1 /Anha5l4LkVcIDBp+xKPIoYndtqWDvTZ2ZAjBmEa3RGusip9SNeC3ZO1qFpe3g9gJH hZqzEJrBRCRd8FsbOjS0j9dekuwPf3R4VjAZ8gf36RaKFnfmQA547CQZs5Ze2ZXiLG UY+neOi/lhd6frDKiGf18Qa10nRCydhK6Rgzaarmp/8fpoVSYTEOeKTAGwqh+nRUWu Q264AvWO/nLOQ== 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 04/28] arm64: introduce arch_zone_limits_init() Date: Sun, 28 Dec 2025 14:39:34 +0200 Message-ID: <20251228124001.3624742-5-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-Rspam-User: X-Rspamd-Queue-Id: 606E140004 X-Rspamd-Server: rspam04 X-Stat-Signature: uq9s9kakynbc65k64iqata8uyd5bxn5n X-HE-Tag: 1766925680-116873 X-HE-Meta: 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 WjcgAFdz UxaDOsfZZ8aneTM5hWvvusOBIf46DpV5I8adfEqVQMQYxHFoaBuoshKhdX+g1Xb2ELqOvmvauYzEpWMz5eTfHJF74TvW23v20dwwVpjusJe775ZLCsNQZPY+JfLTRxdlETIBF3epi8gxPJghK9grkDiKTk5goHQ3Kyq5EgoEI1OsIzK2DoMlwFIJHcyXDK6i6rqvjYfLCNjVdo2/SWRDWBLCWmo8KGlydYXFVA2yvyFeg5MUGWV/pKyGXwlrGw0DkuHXa2NiCCdzUeqpZl8T9sDmu1A== 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