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Mon, 2 Feb 2026 10:57:22 -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: [PATCHv6 05/17] riscv/mm: Align vmemmap to maximal folio size Date: Mon, 2 Feb 2026 15:56:21 +0000 Message-ID: <20260202155634.650837-6-kas@kernel.org> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20260202155634.650837-1-kas@kernel.org> References: <20260202155634.650837-1-kas@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 00A6840002 X-Rspamd-Server: rspam07 X-Stat-Signature: e45tkiq7edk8m8pjmfwpmu4ktzmuztxq X-HE-Tag: 1770047846-907166 X-HE-Meta: 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 Qb+s//kQ RdPeIGxlzSMb9JdoGEh1DDxmiYYCqOJZMyZsiS1kMYvqMBHRq7GhPGAAqXvmF/VwOIo5ZzlQdAjNbQHxdcl/bOBazLIcVJnAPD0zb/09IP2bGoFsUpoAqvBCcN8DMyEJPp5blHoevgafmZoim+HHaE1lguQ1ga6Ho7jOHjv0b67KdFgS48aBUaZyucx3zame+f9HkWAEi8+X4w8dGV2k2Vjg/uzDbDcSFa951t86cAfj0lkjXUvVygolBhJbYwPYZk3ra 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