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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 B1F63E9410B for ; Fri, 2 Jan 2026 07:04:52 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4djF7M5tjCz2yFj; Fri, 02 Jan 2026 18:04:47 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=172.105.4.254 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1767337487; cv=none; b=CaRBz5Kfmy9ncPD9xGrnaIB51tMKPkj+n8xhQG53xwlR0NUXPlTExCM9Eniz6PT+IiriRSgZCwv5u5p56LnUkBrJEd1DRLh1xvpULQoiL147GRJOoQ0zXWvIa7ncqVx1K00ZnPaMMgI+2zsBEBJYqoVggQlBlpN1fr8PEhrPadQXezvLIuodlgHKYX6KTY3HhSt9sisW14IDRzjArBUvU6h0BvdfSrTc59sqVEAdYfmZPkGQugOepJoejMzcc2r/ZqUqBjeYJ4iGUgE8uYmRzKvsHTfkFkZi3pP7RDdNsXmjcnDfjSvw/97dz7NEQLeCUGYj4saHkQERTu7aKkzwIw== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1767337487; c=relaxed/relaxed; bh=O8kExoTLliZANVxlSa71PKoJV58jVF11IqoI4S/DqkA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BlX8LlYIQ8b84i3aztZPTaWJScPTt8EbEd8U2u+x480p7/cXQyNKbQU7Sxn48lCB8lnlEZJgmRsMPOfD9XjncQnAnGeWl7j5xSHzDj8kyoBXfQUoBGxc3iJqg2lkNXpMMLzzp4S6uye7K1Os9xyiQ/bCObN0b6F6eCybrcWmWDd9aYesEp8zTKnhZr0W7ovMk5x8yTtDA5c/sGItAY73rCIKlIS9ID+HjH12C2KrFPimv1xVtwXG8ocaG7TySjvrBS0bTVpgCz7nBjjqrr9c0nvLU5CXmC/7XFvMGOPPsl7yYQ56btEiqSsvqMNZAtZyxVzGnfwenjn8t2CrbvFImw== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=LzgeyCu4; dkim-atps=neutral; spf=pass (client-ip=172.105.4.254; helo=tor.source.kernel.org; envelope-from=rppt@kernel.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=LzgeyCu4; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=172.105.4.254; helo=tor.source.kernel.org; envelope-from=rppt@kernel.org; receiver=lists.ozlabs.org) Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4djF7L6fhzz2yvM for ; Fri, 02 Jan 2026 18:04:46 +1100 (AEDT) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id BE0CA60125; Fri, 2 Jan 2026 07:04:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9489AC116B1; Fri, 2 Jan 2026 07:04:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767337454; bh=hFJveYfaCrIw0+iDVEP3vQL9fd/XBHyX+JYd2Rm0RhA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LzgeyCu4tQubrTKtvs34G1LIbvPSfWcug9h6n8ZnurA/OZo0SL4EiW+RhJfIMsVbN 6qs+6wI+dAhn4AXYB3TCsenNnM2pD9lgkbKN8HUEkLaTXaERBE4eH62J2otaLZPvvo YfvsWRC4P7RMmakWoZYfT/7eJLOcmiZchjlXHXyJHM/9dD7DNryMUZcig74jKnnp7O Eqkmozvn5OkGUKhT26ipcF9xHIodKB9ZSsrSF+gY+nHDbiWFN81dgjKg2jTAywYSyv FAv2UuNc++l2TIFLmhufUSCXUdrPJ79EA9gNVdKL5ZjVooYOcrw679Uo1JZYEQHezQ wesYIpKlfAIPA== 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 16/28] s390: introduce arch_zone_limits_init() Date: Fri, 2 Jan 2026 08:59:52 +0200 Message-ID: <20260102070005.65328-17-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> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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/s390/mm/init.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index e4953453d254..1c11ad84dddb 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -86,6 +86,12 @@ static void __init setup_zero_pages(void) zero_page_mask = ((PAGE_SIZE << order) - 1) & PAGE_MASK; } +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) +{ + max_zone_pfns[ZONE_DMA] = virt_to_pfn(MAX_DMA_ADDRESS); + max_zone_pfns[ZONE_NORMAL] = max_low_pfn; +} + /* * paging_init() sets up the page tables */ @@ -97,8 +103,7 @@ void __init paging_init(void) sparse_init(); zone_dma_limit = DMA_BIT_MASK(31); memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); - max_zone_pfns[ZONE_DMA] = virt_to_pfn(MAX_DMA_ADDRESS); - max_zone_pfns[ZONE_NORMAL] = max_low_pfn; + arch_zone_limits_init(max_zone_pfns); free_area_init(max_zone_pfns); } -- 2.51.0