From nobody Sun Feb 8 07:08:13 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 8AB0823A564; Sun, 11 Jan 2026 08:26:26 +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=1768119986; cv=none; b=CKbzhW6IsdJYcpu75Ocj65y8RTJMBsvgvlZf34DsXPjUaJh0SGS1OhtClNEg3Tr72zJHc58g3BSoRPfrIk+qUeljH8fAXJiJWzl5dOysda5wF9hm7zrX+xTYm+Oxn2oQ8l8gilFO0XnP3j8WMHv1FtZBO6e61OxI8dJijdTHFzQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768119986; c=relaxed/simple; bh=2fA0ShJu41IpFxgmfkKiNARLhjMIlJQdtqcPZZQwJv0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bb189R6phmPZd5KikHOf/8b/Lr85MLA3afULVcswgrqQFfaLV7YneOSE7sKMvTS2RHjBoRRG5c7R4p+Ql9fq7ICz6ovSuroWl9cxw4peWbq+E2XXjewF6+LN9apG4uss0s0o5F7/nPPl6MjXgHT28UdYKW9VDfTpBM0HLUhmIkk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cE1cYxN4; 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="cE1cYxN4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9902BC16AAE; Sun, 11 Jan 2026 08:26:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768119986; bh=2fA0ShJu41IpFxgmfkKiNARLhjMIlJQdtqcPZZQwJv0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cE1cYxN4XiRu8w05462pUh7mJ7YsVKuFjZN060SdsKaL4HwvgafRghrCyOjRFhfks goIC3meGsc011NdlQvuX6sIIgoPYYnguJE4V0ezIriNOLb6UY7TUl/H5KBLc8jHspZ bqpyaiW+yhS8K0JZpP7OoWNV42LbmkHolciEGY3Q8P86DZkjSJMAXJFu4snmxoEaeq r3tJN1kJLVtUQz/4sqhj/7RV76IDG6QOBqIhTOn9+KWKkfscjeNSTO2ALgfmelbFhD UIdusobMPUaMKF4j5L6OSMUErDZGo+V2brMOeeP2O1yqFNvH5sQW4orMNneYRJx38a Qg78VBIC985zA== 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 20/29] um: introduce arch_zone_limits_init() Date: Sun, 11 Jan 2026 10:20:54 +0200 Message-ID: <20260111082105.290734-21-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) --- arch/um/kernel/mem.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index 39c4a7e21c6f..2ac4e9debedd 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -84,6 +84,11 @@ void __init mem_init(void) kmalloc_ok =3D 1; } =20 +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) +{ + max_zone_pfns[ZONE_NORMAL] =3D high_physmem >> PAGE_SHIFT; +} + void __init paging_init(void) { unsigned long max_zone_pfn[MAX_NR_ZONES] =3D { 0 }; @@ -94,7 +99,7 @@ void __init paging_init(void) panic("%s: Failed to allocate %lu bytes align=3D%lx\n", __func__, PAGE_SIZE, PAGE_SIZE); =20 - max_zone_pfn[ZONE_NORMAL] =3D high_physmem >> PAGE_SHIFT; + arch_zone_limits_init(max_zone_pfn); free_area_init(max_zone_pfn); } =20 --=20 2.51.0