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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 20/28] x86: introduce arch_zone_limits_init() Date: Fri, 2 Jan 2026 08:59:56 +0200 Message-ID: <20260102070005.65328-21-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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 33DC7100013 X-Stat-Signature: jt6osuqoyy56naaf7h988jch5so33cxi X-Rspam-User: X-HE-Tag: 1767337512-67982 X-HE-Meta: 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 G2OAbAJN 4qKqdA9SQvqP6O2I7+1NAO6JxeNTNZwmZaguF0PuPdLATdxzlEy/QMEFj8FvbMSojKO196YLiyVXALpsRMNEFdptZIGOzHVVSEfnCUnpLYD/nbGk8GPsafx/Y7GXDPh5nzgT8PL0zdat6Z/1TnKgW9RqiKptj/rzh1rTHP3Wy3nGduwsvd/j+W5nNaOwcZ8EHAVnR2yyr0rbTeNVxm9y23yI907Y01O1wD6/CoEyNBf9UFULzOK5m2AytqBo6m3OfW9wAA1iIKdFeJZH3s/ME6xx52g== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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/x86/mm/init.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 8bf6ad4b9400..e7ef605a18d6 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -997,12 +997,8 @@ void __init free_initrd_mem(unsigned long start, unsigned long end) } #endif -void __init zone_sizes_init(void) +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) { - unsigned long max_zone_pfns[MAX_NR_ZONES]; - - memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); - #ifdef CONFIG_ZONE_DMA max_zone_pfns[ZONE_DMA] = min(MAX_DMA_PFN, max_low_pfn); #endif @@ -1013,7 +1009,15 @@ void __init zone_sizes_init(void) #ifdef CONFIG_HIGHMEM max_zone_pfns[ZONE_HIGHMEM] = max_pfn; #endif +} + +void __init zone_sizes_init(void) +{ + unsigned long max_zone_pfns[MAX_NR_ZONES]; + + memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); + arch_zone_limits_init(max_zone_pfns); free_area_init(max_zone_pfns); } -- 2.51.0