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 F10F0E92724 for ; Sun, 28 Dec 2025 12:42:18 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5F0976B009E; Sun, 28 Dec 2025 07:42:18 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 5BB2B6B00A0; Sun, 28 Dec 2025 07:42:18 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4DB5B6B00A1; Sun, 28 Dec 2025 07:42:18 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 3A1E46B009E for ; Sun, 28 Dec 2025 07:42:18 -0500 (EST) Received: from smtpin26.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id EF4D6ED8B6 for ; Sun, 28 Dec 2025 12:42:17 +0000 (UTC) X-FDA: 84268842714.26.245A13F Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf11.hostedemail.com (Postfix) with ESMTP id 6368840006 for ; Sun, 28 Dec 2025 12:42:16 +0000 (UTC) Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=JG4fyb9H; spf=pass (imf11.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=1766925736; 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=OJatOTiXEPNp/W52LlXUaW1EIsFN/BNV7MmBuJg1xZQ=; b=BabqitI074NuMQM6vVmSBj6py4AsvrZIlXZtDIMp+hdTlnJfuWnG97jduww1Fl2JCsyN3z XSvkPzYzrC5xCzPwQCMnwzW3+32zXNLayW1XmoDn9cvSH1ZLLE7LF/SLCNfwC0/QRxGMWL usCESKTmSLTarMtsKuf3iV4UJzLTtD4= ARC-Authentication-Results: i=1; imf11.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=JG4fyb9H; spf=pass (imf11.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=1766925736; a=rsa-sha256; cv=none; b=kFsqXLwKOkmhq8usoaQSAdEOu17KsVCHN22vMipG9MBJyb6SYrfMuGu6ugHfOY7Vwx7CpN 1uzhJWiVechPtJ/aUWfYM7PhjBNHV7fXWbP/NTqKEkyHDyAjLD3TIltHhRjV9XsvNDJxmG B/pW9PQ55Tw7xK7VNuLZmUljQOjkm3U= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id A2E26439B6; Sun, 28 Dec 2025 12:42:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 01C9AC16AAE; Sun, 28 Dec 2025 12:42:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1766925735; bh=qGV3crV7vYfN1DCsmhF37VWmOXuApg3MmNmGXJVotqE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JG4fyb9He83CXx9yabJ1wYRs95IfVNB2F586zi15zCd1oNMacH+6znZ+ceKQNfrjx +eEr/AdmSp+H6pVP0U+08wQCx51U84RT2GE26vxy/u14qcmZxaO7/IU/klSevnk8lA vM0pVSQsLZxPglXSMVb7/hD3lm54KyOTx//USUlQkU1glusRU8S4mDrDjLgXCn7xSo DKDwYDHlsd1BLmX8x4wKtXILnIiP77e+5+1B+TOY7FeKhNOo3J1JwxAr29ouMLQoI+ 5rsEd2gotTkEQ5pwtj0IiqueuPgvAF9w6W+R0W7LI3FnHuera9SImC6lMLPkR6NFTL hrnrQ8sndZQKA== 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 08/28] m68k: introduce arch_zone_limits_init() Date: Sun, 28 Dec 2025 14:39:38 +0200 Message-ID: <20251228124001.3624742-9-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: rspam02 X-Stat-Signature: et38bfgjg8tw4xguutgpjpq94r6kztth X-Rspam-User: X-Rspamd-Queue-Id: 6368840006 X-HE-Tag: 1766925736-150028 X-HE-Meta: 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 vm5y80WK HyNyz 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. Since all variants of m68k add all memory to ZONE_DMA, it is possible to use unified implementation for arch_zone_limits_init() that sets the end of ZONE_DMA to memblock_end_of_DRAM(). Signed-off-by: Mike Rapoport (Microsoft) --- arch/m68k/mm/init.c | 7 ++++++- arch/m68k/mm/mcfmmu.c | 2 +- arch/m68k/mm/motorola.c | 2 +- arch/m68k/mm/sun3mmu.c | 2 +- 4 files changed, 9 insertions(+), 4 deletions(-) diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c index 488411af1b3f..6b1d9d2434b5 100644 --- a/arch/m68k/mm/init.c +++ b/arch/m68k/mm/init.c @@ -40,6 +40,11 @@ void *empty_zero_page; EXPORT_SYMBOL(empty_zero_page); +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) +{ + max_zone_pfns[ZONE_DMA] = PFN_DOWN(memblock_end_of_DRAM()); +} + #ifdef CONFIG_MMU int m68k_virt_to_node_shift; @@ -69,7 +74,7 @@ void __init paging_init(void) high_memory = (void *) end_mem; empty_zero_page = memblock_alloc_or_panic(PAGE_SIZE, PAGE_SIZE); - max_zone_pfn[ZONE_DMA] = end_mem >> PAGE_SHIFT; + arch_zone_limits_init(max_zone_pfn); free_area_init(max_zone_pfn); } diff --git a/arch/m68k/mm/mcfmmu.c b/arch/m68k/mm/mcfmmu.c index 19a75029036c..24a6f7bbd1ce 100644 --- a/arch/m68k/mm/mcfmmu.c +++ b/arch/m68k/mm/mcfmmu.c @@ -73,7 +73,7 @@ void __init paging_init(void) } current->mm = NULL; - max_zone_pfn[ZONE_DMA] = PFN_DOWN(_ramend); + arch_zone_limits_init(max_zone_pfn); free_area_init(max_zone_pfn); } diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c index 62283bc2ed79..d6ccd23caf61 100644 --- a/arch/m68k/mm/motorola.c +++ b/arch/m68k/mm/motorola.c @@ -517,6 +517,6 @@ void __init paging_init(void) if (node_present_pages(i)) node_set_state(i, N_NORMAL_MEMORY); - max_zone_pfn[ZONE_DMA] = memblock_end_of_DRAM(); + arch_zone_limits_init(max_zone_pfn); free_area_init(max_zone_pfn); } diff --git a/arch/m68k/mm/sun3mmu.c b/arch/m68k/mm/sun3mmu.c index 1ecf6bdd08bf..fdd69cc4240c 100644 --- a/arch/m68k/mm/sun3mmu.c +++ b/arch/m68k/mm/sun3mmu.c @@ -82,7 +82,7 @@ void __init paging_init(void) current->mm = NULL; /* memory sizing is a hack stolen from motorola.c.. hope it works for us */ - max_zone_pfn[ZONE_DMA] = ((unsigned long)high_memory) >> PAGE_SHIFT; + arch_zone_limits_init(max_zone_pfn); /* I really wish I knew why the following change made things better... -- Sam */ free_area_init(max_zone_pfn); -- 2.51.0