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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 779CCD2502E for ; Sun, 11 Jan 2026 08:25:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+ggqCxhF8/HfTmzgXmdH5bujiixe8By9k91qX4IdsL4=; b=TVH7KvEMeRLHuJ UPkD1FBP1sAb73vKJZ0Qz/LnMEbfXGQ3aq8ym+A97c4i6ENLgpEo2oZGmKUo7yogoJqLpW1PQxxEL iWs7oDxnKm9BADVsJpdFDeFFiMWMbdYnEAVxE6Uj4Q4r61crAvY9zOPf8cZy9Luydxc9uL/T/A/+k N3rSBDintWYfE3mfdI+wtoHSrSYb1hOgcX5+wij9mPz1PsjOHxFOV/nDqBYRjRp62X3MhQXJDCJaw xVlLsK1pbTMU3rV2GPp4wrw8LGp6W2IN6gjebgnf6tCePji/9pLFQbdL7yJVQElhzLhnxLtXA/+5n J/7SK2Op7WwF42hSQV9Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1veqlD-00000003zsy-0xto; Sun, 11 Jan 2026 08:25:19 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1veqlB-00000003zrQ-2737; Sun, 11 Jan 2026 08:25:17 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=a/l0u3Hxe5VmGHjW0jp1QC8gVmA78/lu+jqaojRNk7Q=; b=hc0sL5P/wdxLWA9540D3QeRnmG +ZNbh5xASgmSe1xLP3wpve0HTJOGQnHF/anHsXEsDje5Wh5YkJTmVaUTMGDgG5tbK6aWYQNDkyFne kzkKVSbmFgWk9dr97DR/AweMR41bpMGk4RdUaTpTWK/UE1+wMfgfNFL6CAfolpdnDAkLPI7V8Q43k Ch9BbZju2AN1YsuFi7HGdJ2RtAXBtrIr0r+4NpE6BNYcFyZJygpKyOHpkC/4bjtwnWn2IZmyDjQJw TROoM5F4pgcnYTjx/rVzrR9bmOQBrVipkZhSTp9zagu3cAoxhiHuCshCeEc0/0llK7lge8+iJnYqm ATiX2QvQ==; Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by desiato.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1veql6-0000000GuKO-0yEb; Sun, 11 Jan 2026 08:25:15 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id B72CD40D98; Sun, 11 Jan 2026 08:25:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F417AC4CEF7; Sun, 11 Jan 2026 08:24:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768119910; bh=XLJkxze/zRljNiS2gjyXo20G7bby5TmrPlX4304F60E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NJT6JCU7l1lxqyEUTX5FYSwW/ezRfbB5BhOsON2tIsFgcB6KzvRLR+VnOfjUnNUli 1Df8EMUsXpuMWNMEAA9p52WCryPzuB9RbNl4/dSrDVNn62F060YueIkx8RUqzMLl6f BhWB9bOPubZIrl7G5M3hr3fwWW14Tf1pPvDElI9X6i/zDAFVSfmNKdnay9gRKvt/PL Xp0l0kOl1v0LyjjDmg+r8L2t3wr9KtSAMNHGmCC+QweHEL3NWWYl1TRj4kT+Dh+ak9 au2MTE1nA096UC962hgd53ExdFcUsGJJZA+dyB8GHK3x3h15Sno3iINFa4dPcVEyf+ kN9pkH6svLtFQ== 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 15/29] powerpc: introduce arch_zone_limits_init() Date: Sun, 11 Jan 2026 10:20:49 +0200 Message-ID: <20260111082105.290734-16-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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260111_082512_852320_3B0AFEF6 X-CRM114-Status: GOOD ( 13.22 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org 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..03c05ec56041 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 >> PAGE_SHIFT) + 1, max_low_pfn); +#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] = { 0 }; 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 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc