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Wed, 28 Jan 2026 08:55:44 -0500 (EST) From: Kiryl Shutsemau To: Andrew Morton , Muchun Song , David Hildenbrand , Matthew Wilcox , Usama Arif , Frank van der Linden Cc: Oscar Salvador , Mike Rapoport , Vlastimil Babka , Lorenzo Stoakes , Zi Yan , Baoquan He , Michal Hocko , Johannes Weiner , Jonathan Corbet , Huacai Chen , WANG Xuerui , Palmer Dabbelt , Paul Walmsley , Albert Ou , Alexandre Ghiti , kernel-team@meta.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org, Kiryl Shutsemau Subject: [PATCHv5 05/17] riscv/mm: Align vmemmap to maximal folio size Date: Wed, 28 Jan 2026 13:54:46 +0000 Message-ID: <20260128135500.22121-6-kas@kernel.org> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20260128135500.22121-1-kas@kernel.org> References: <20260128135500.22121-1-kas@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 403F2100005 X-Stat-Signature: ewfseooqqptmsks8grjtc6kexabn4qyf X-HE-Tag: 1769608549-656905 X-HE-Meta: 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 D2wj0EJ+ neJv0IwiNwshUb5ryD/h1+QntYvKB0Me6umKuutazKVgN0boSZlc53meLI1zsSYNhJ9NUSlTIrZLxL4US3pIQYvj05cnXevzDxade6dadX36cY3R1AhGxkL1pnXpHzWX1UEznaa4XFFNs6C6Bf5BH3yfL+0ULORhcBrYi9gC8tZYhamOoPU7Hwq0qLF7Kpx0O05l0dRwrFPZTvSMpZeQM+5sM4LVpjsz41kIU2aMCCCG44ViajnUh69EBfOvzKNPu5K3n 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: The upcoming change to the HugeTLB vmemmap optimization (HVO) requires struct pages of the head page to be naturally aligned with regard to the folio size. Align vmemmap to MAX_FOLIO_NR_PAGES. Signed-off-by: Kiryl Shutsemau --- arch/riscv/mm/init.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 21d534824624..c555b9a4fdce 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -63,7 +63,8 @@ phys_addr_t phys_ram_base __ro_after_init; EXPORT_SYMBOL(phys_ram_base); #ifdef CONFIG_SPARSEMEM_VMEMMAP -#define VMEMMAP_ADDR_ALIGN (1ULL << SECTION_SIZE_BITS) +#define VMEMMAP_ADDR_ALIGN max(1ULL << SECTION_SIZE_BITS, \ + MAX_FOLIO_NR_PAGES * sizeof(struct page)) unsigned long vmemmap_start_pfn __ro_after_init; EXPORT_SYMBOL(vmemmap_start_pfn); -- 2.51.2