Miguel Ojeda wrote on Sat, Sep 05, 2026 at 01:41:11PM +0200:
I see the same arm32 build issue:
mm/page_vma_mapped.c:110:11: error: call to undeclared function 'huge_ptep_get'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 110 | ptent = huge_ptep_get(pvmw->vma->vm_mm, pvmw->address, | ^In addition, in UML (x86_64) there is also nearby:
mm/page_vma_mapped.c:110:9: error: assigning to 'pte_t' from incompatible type 'int' 110 | ptent = huge_ptep_get(pvmw->vma->vm_mm, pvmw->address, | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 111 | pvmw->pte); | ~~~~~~~~~~
See this 6.12 thread[1] for this build failure (I didn't check but assume it is the same, that missing commit only made it 7.3-rc1 but was also backported to the 7.2 tree, which also explains 7.2 didn't build fail) --- This builds on master because this commit: f5407e9b697c ("mm/rmap: use huge_ptep_get() in try_to_unmap_one()") added a function declaration in linux/hugetlb.h !CONFIG_HUGETLB_PAGE code: ``` diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 817b8b4223fa..95b1b6ee1f96 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -1270,6 +1270,8 @@ static inline void hugetlb_count_sub(long l, struct mm_struct *mm) { }
+pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep); + static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { ```
The rest of that commit isn't applicable, so we either need to roll that change in 'mm/migrate: use huge_ptep_get() in remove_migration_pte()' or add it separately (or drop that commit) ---
[1] https://lore.kernel.org/r/apq_s8mFJJPzoIdo@codewreck.org