From nobody Sun Feb 8 05:26:55 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 2FBB122AE65; Sun, 11 Jan 2026 08:21:38 +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=1768119699; cv=none; b=BxcgOYj2hfTQV0r17pusCgVCF57V4sfiKqj2lw84R4jvw+tvqkZyMAtwA/v5y3pyFFzgKvgfBUxog+mvioJadi9PdsazXSjrivl8+V4YH8zx66Yb31kImMpP6xNwsTMja7ZSwupZDb8bgaKhMum+ukLFjXV6ZRYQsOpeNoLQFUQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768119699; c=relaxed/simple; bh=KgO7SaOs49km6xau9XjjDmzydPHNaHbDsqRu17wGsEs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HYeRPN6O7uHyvHlpTED/4ggGTWrMhdIYXQcdfd3jPSVgcQhje1UafoG3nCKbm3UzcdDicOdTk7iu9p1K53VkWbkXspOybsu1OxeGA765/lchQx2UlDXP21/ze4uLIN+0cc3s2H/pYmyPYMXtt5D2OrFhUmn5UuQ/Fn5yZeDuDj0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mKsFfy4h; 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="mKsFfy4h" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3F81EC19424; Sun, 11 Jan 2026 08:21:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768119698; bh=KgO7SaOs49km6xau9XjjDmzydPHNaHbDsqRu17wGsEs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mKsFfy4hncm+FQF9ArIXoeLTO/v06DCp8sXjb1/J7bQiazwbZMdpHIy9QotlxdrKv cKzwRylS7hXf12+BEXaXStZUkeCwmqdBGWQzJ9yqdLS95oD2cS0pSBfDrcKw/dAkej 56RV0+FAFYsa39zRWlT7ql3sObFpMCuLtdFkflVRr4BAKpyPWA7tvw8HwpcQSyv04q jpHzxotVHj204aEr/qLLNW0xVwVegN9kaR/1lVEctSggjpdCZQ9WegpvTuhQU3MJ26 pU23I8xS42R0TrNytKEIX7DhURcabHaDeWfPtsCINu3tImuaarWe0Jtqcs5M33w4wE HXtsM6RgI0KhQ== 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 01/29] alpha: introduce arch_zone_limits_init() Date: Sun, 11 Jan 2026 10:20:35 +0200 Message-ID: <20260111082105.290734-2-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: Magnus Lindholm --- arch/alpha/mm/init.c | 15 ++++++++++----- include/linux/mm.h | 1 + 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c index 4c5ab9cd8a0a..cd0cb1abde5f 100644 --- a/arch/alpha/mm/init.c +++ b/arch/alpha/mm/init.c @@ -208,12 +208,8 @@ callback_init(void * kernel_end) return kernel_end; } =20 -/* - * paging_init() sets up the memory map. - */ -void __init paging_init(void) +void __init arch_zone_limits_init(unsigned long *max_zone_pfn) { - unsigned long max_zone_pfn[MAX_NR_ZONES] =3D {0, }; unsigned long dma_pfn; =20 dma_pfn =3D virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT; @@ -221,8 +217,17 @@ void __init paging_init(void) =20 max_zone_pfn[ZONE_DMA] =3D dma_pfn; max_zone_pfn[ZONE_NORMAL] =3D max_pfn; +} + +/* + * paging_init() sets up the memory map. + */ +void __init paging_init(void) +{ + unsigned long max_zone_pfn[MAX_NR_ZONES] =3D {0, }; =20 /* Initialize mem_map[]. */ + arch_zone_limits_init(max_zone_pfn); free_area_init(max_zone_pfn); =20 /* Initialize the kernel's ZERO_PGE. */ diff --git a/include/linux/mm.h b/include/linux/mm.h index 15076261d0c2..628c0e0ac313 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -3552,6 +3552,7 @@ static inline unsigned long get_num_physpages(void) * free_area_init(max_zone_pfns); */ void free_area_init(unsigned long *max_zone_pfn); +void arch_zone_limits_init(unsigned long *max_zone_pfn); unsigned long node_map_pfn_alignment(void); extern unsigned long absent_pages_in_range(unsigned long start_pfn, unsigned long end_pfn); --=20 2.51.0