From nobody Mon Feb 9 07:20:57 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4ECF02E6CC8; Sun, 28 Dec 2025 12:44:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766925876; cv=none; b=icnxit1h+Fdc8d28ZmAWn2gm9A7t9AuRldtkpjlz8cDSH1iVB5fGHeN7FxBILNj2B9k2XNUBABVClSn+ufDIw8l5BPgTILKkuF4NCJ9XMnTLRgQXoojLf/p3NRBli6o9IF6Z+a5pqAlV4v4PdXQ4BFMQRtUpuCr91Fz4/XPxByc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766925876; c=relaxed/simple; bh=oB6QCqWGlUcVzO7N8KoxEGaOaNJpg/wuZYHeNsCpdgU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Q7WdUN9gg5gV5n/yStiXHQzRv8SqBs+ouKG8OhLoaN8DPVao36dERhPvN3wMimxpm/M2n7Va9zIqJAmrvVaaHn5p0i3F7sDdjbblXg9v9apQnrErp5VQa2QApKY39eec9KDjO03tBHB3Oaq+u/Cy2ckUUIIa5vUoe7KuvUwMdLw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GEARsU2p; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="GEARsU2p" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6A573C113D0; Sun, 28 Dec 2025 12:44:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1766925875; bh=oB6QCqWGlUcVzO7N8KoxEGaOaNJpg/wuZYHeNsCpdgU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GEARsU2p+EZgFjCyr9uyzZ8hj2re6eD/C923QhGvMMzHuSCkKZytNmeZxflu9jkn+ Ppetcw1V5leg6VH3ggoT2pItHYZTxfo/oyIWHLFsGUZ8jPgjmd2ugFiVcvcbuH43oy c94di+9wYXVA02fLVIEPud2jr2wZF6CazDTX4rNh22wu5gpZ7KtiuBI4xhIBXDOmSL RRif8oZtzD3AqNLNQidA7D3P3awFsxGTATE8jB0P7elm42vJSPqaqhGg1UJnjG1bnj 3RnJniQjMgOHBMWKI7HkIR9dVwVy/YdaTbCkFX4tkcz8jitWxQWcWWx91604v63IVd Ng+6vXu0vT9NQ== 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 18/28] sparc: introduce arch_zone_limits_init() Date: Sun, 28 Dec 2025 14:39:48 +0200 Message-ID: <20251228124001.3624742-19-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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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/sparc/mm/init_64.c | 6 ++++++ arch/sparc/mm/srmmu.c | 12 ++++++++---- 2 files changed, 14 insertions(+), 4 deletions(-) diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index df9f7c444c39..fbaad449dfc9 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -2279,6 +2279,11 @@ static void __init reduce_memory(phys_addr_t limit_r= am) memblock_enforce_memory_limit(limit_ram); } =20 +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) +{ + max_zone_pfns[ZONE_NORMAL] =3D last_valid_pfn; +} + void __init paging_init(void) { unsigned long end_pfn, shift, phys_base; @@ -2461,6 +2466,7 @@ void __init paging_init(void) =20 max_zone_pfns[ZONE_NORMAL] =3D end_pfn; =20 + arch_zone_limits_init(max_zone_pfns); free_area_init(max_zone_pfns); } =20 diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c index f8fb4911d360..81e90151db90 100644 --- a/arch/sparc/mm/srmmu.c +++ b/arch/sparc/mm/srmmu.c @@ -884,6 +884,13 @@ static void __init map_kernel(void) =20 void (*poke_srmmu)(void) =3D NULL; =20 +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) +{ + max_zone_pfns[ZONE_DMA] =3D max_low_pfn; + max_zone_pfns[ZONE_NORMAL] =3D max_low_pfn; + max_zone_pfns[ZONE_HIGHMEM] =3D highend_pfn; +} + void __init srmmu_paging_init(void) { int i; @@ -967,10 +974,7 @@ void __init srmmu_paging_init(void) { unsigned long max_zone_pfn[MAX_NR_ZONES] =3D { 0 }; =20 - max_zone_pfn[ZONE_DMA] =3D max_low_pfn; - max_zone_pfn[ZONE_NORMAL] =3D max_low_pfn; - max_zone_pfn[ZONE_HIGHMEM] =3D highend_pfn; - + arch_zone_limits_init(max_zone_pfn); free_area_init(max_zone_pfn); } } --=20 2.51.0