diff --git a/mm/mremap.c b/mm/mremap.c index 3a3cf4cc2c63..a46c810407a8 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -219,7 +219,11 @@ static inline bool arch_supports_page_table_move(void) } #endif -#ifdef CONFIG_HAVE_MOVE_PMD +/* + * Speculative page fault handlers will not detect page table changes done + * without ptl locking. + */ +#if defined(CONFIG_HAVE_MOVE_PMD) && !defined(CONFIG_SPECULATIVE_PAGE_FAULT) static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long old_addr, unsigned long new_addr, pmd_t *old_pmd, pmd_t *new_pmd) { @@ -287,7 +291,12 @@ static inline bool move_normal_pmd(struct vm_area_struct *vma, } #endif -#if CONFIG_PGTABLE_LEVELS > 2 && defined(CONFIG_HAVE_MOVE_PUD) +/* + * Speculative page fault handlers will not detect page table changes done + * without ptl locking. + */ +#if CONFIG_PGTABLE_LEVELS > 2 && defined(CONFIG_HAVE_MOVE_PUD) && \ + !defined(CONFIG_SPECULATIVE_PAGE_FAULT) static bool move_normal_pud(struct vm_area_struct *vma, unsigned long old_addr, unsigned long new_addr, pud_t *old_pud, pud_t *new_pud) {