diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/mm/mmu.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index e2739b69e11b..d1a4646f13a9 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -1176,8 +1176,11 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node, struct vmem_altmap *altmap) { WARN_ON((start < VMEMMAP_START) || (end > VMEMMAP_END)); + /* [start, end] should be within one section */ + WARN_ON_ONCE(end - start > PAGES_PER_SECTION * sizeof(struct page)); - if (!IS_ENABLED(CONFIG_ARM64_4K_PAGES)) + if (!IS_ENABLED(CONFIG_ARM64_4K_PAGES) || + (end - start < PAGES_PER_SECTION * sizeof(struct page))) return vmemmap_populate_basepages(start, end, node, altmap); else return vmemmap_populate_hugepages(start, end, node, altmap); |