diff options
| -rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index fbe747ed8c2d..59268969a0bc 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -1325,8 +1325,16 @@ int __hash_page(unsigned long ea, unsigned long msr, unsigned long trap, #ifdef CONFIG_PPC_MM_SLICES static bool should_hash_preload(struct mm_struct *mm, unsigned long ea) { + int psize = get_slice_psize(mm, ea); + /* We only prefault standard pages for now */ - if (unlikely(get_slice_psize(mm, ea) != mm->context.user_psize)) + if (unlikely(psize != mm->context.user_psize)) + return false; + + /* + * Don't prefault if subpage protection is enabled for the EA. + */ + if (unlikely((psize == MMU_PAGE_4K) && subpage_protection(mm, ea))) return false; return true; |