From nobody Sun Feb 8 11:44:52 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 5B4EF23A564; Sun, 11 Jan 2026 08:26:11 +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=1768119971; cv=none; b=hQztLVj+wVmfbrkzJtVEAfbFSyLdgsZhNuB8JZ205ibWmoZE5faWVHBX5xF1uZWK/6R0s/JVyjMgRXWmLfHAqndRXXXmduVK9Oi/bSFddWGMrIiAdmB4PvQ8bOFDPpFNHpNYmej9ZNXfeOWp+1DgOMNNbT2UO2X3XH0D4rWY1O8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768119971; c=relaxed/simple; bh=oB6QCqWGlUcVzO7N8KoxEGaOaNJpg/wuZYHeNsCpdgU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=m6BXsIXIGzLA83a8HlwI6GrW8HmU+o0DMT+/QDk8ASB9DeIclrxdCQzZgo38DZAmYujDFxbG3JfQIjB/xJhg09SkaTkPqv8t5M88Ok/L2/RU3agzm+DFjfrJmLFvaKkc5gnUYqSk6cbtBVehhANZn+Ie6mxhEa52kh5Y/VxHXjk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FCgoY/zC; 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="FCgoY/zC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B7D0C4CEF7; Sun, 11 Jan 2026 08:25:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768119971; bh=oB6QCqWGlUcVzO7N8KoxEGaOaNJpg/wuZYHeNsCpdgU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FCgoY/zClmOALMEzX+QGECEEPV7T3L6P2l9SJuYtZBPLJ0TU7r1JmDmqmaOzlixHM V2rn3TYFVY0bqHoDWhb0Gj662NbUSm1dBp81NYzRwzFZJGLo074/Se+IAyPFQ5leeD PEsGh0XhkssNIwxce06F8DAs2N7MD0DYVETwqgDoFv+EtygOCimB4fbNvfrSxKyFgx S9yGG1o2zhHPeqEfMleqAcgNBmPU9z6tzpBp7Fz2bq5tBLCcH10svoJMb5cEN8OLnE b5siscAudenCVtmXNMhWhsVWfArzA/VV4IitFVVdWbDv49lESg6nfy6O7xkz2LhaAa g0n4y+0e0Pw/A== 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 19/29] sparc: introduce arch_zone_limits_init() Date: Sun, 11 Jan 2026 10:20:53 +0200 Message-ID: <20260111082105.290734-20-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> 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) Acked-by: Andreas Larsson --- 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