On Thu, Nov 03, 2016 at 10:27:38AM +0800, Huang Shijie wrote:
> diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
> index 2e49bd2..4811ef1 100644
> --- a/arch/arm64/mm/hugetlbpage.c
> +++ b/arch/arm64/mm/hugetlbpage.c
> @@ -61,10 +61,6 @@ static int find_num_contig(struct mm_struct *mm, unsigned
> long addr,
> return 1;
> }
> pmd = pmd_offset(pud, addr);
> - if (!pmd_present(*pmd)) {
> - VM_BUG_ON(!pmd_present(*pmd));
> - return 1;
> - }
> if ((pte_t *)pmd == ptep) {
> *pgsize = PMD_SIZE;
> return CONT_PMDS;
BTW, for the !pud_present() and !pgd_present() cases, shouldn't
find_num_contig() actually return 0? These are more likely real bugs, so
no point in setting the huge pte.
--
Catalin
