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| author | Kiryl Shutsemau <kas@kernel.org> | 2026-02-27 22:42:44 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-04-05 23:53:08 +0300 |
| commit | 2969b42c8f994330fc020ec0d235aeb43bce317c (patch) | |
| tree | a2b7778733a8e7a97581f3963f662852782cb6af | |
| parent | 476849b0fba4450f5adf22196bcff9c24c673bc4 (diff) | |
| download | linux-2969b42c8f994330fc020ec0d235aeb43bce317c.tar.xz | |
LoongArch/mm: align vmemmap to maximal folio size
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_VMEMMAP_ALIGN.
Link: https://lkml.kernel.org/r/20260227194302.274384-7-kas@kernel.org
Signed-off-by: Kiryl Shutsemau <kas@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Baoquan He <bhe@redhat.com>
Cc: Christoph Lameter <cl@gentwo.org>
Cc: David Hildenbrand (arm) <david@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Frank van der Linden <fvdl@google.com>
Cc: Harry Yoo <harry.yoo@oracle.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Usama Arif <usamaarif642@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | arch/loongarch/include/asm/pgtable.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/loongarch/include/asm/pgtable.h b/arch/loongarch/include/asm/pgtable.h index a244de27a03e..155f70e93460 100644 --- a/arch/loongarch/include/asm/pgtable.h +++ b/arch/loongarch/include/asm/pgtable.h @@ -104,7 +104,8 @@ struct vm_area_struct; min(PTRS_PER_PGD * PTRS_PER_PUD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, (1UL << cpu_vabits) / 2) - PMD_SIZE - VMEMMAP_SIZE - KFENCE_AREA_SIZE) #endif -#define vmemmap ((struct page *)((VMALLOC_END + PMD_SIZE) & PMD_MASK)) +#define VMEMMAP_ALIGN max(PMD_SIZE, MAX_FOLIO_VMEMMAP_ALIGN) +#define vmemmap ((struct page *)(ALIGN(VMALLOC_END, VMEMMAP_ALIGN))) #define VMEMMAP_END ((unsigned long)vmemmap + VMEMMAP_SIZE - 1) #define KFENCE_AREA_START (VMEMMAP_END + 1) |