diff options
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/book3s64/hash_tlb.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/mm/book3s64/subpage_prot.c | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/mm/book3s64/hash_tlb.c b/arch/powerpc/mm/book3s64/hash_tlb.c index a64ea0a7ef96..21fcad97ae80 100644 --- a/arch/powerpc/mm/book3s64/hash_tlb.c +++ b/arch/powerpc/mm/book3s64/hash_tlb.c @@ -239,12 +239,16 @@ void flush_hash_table_pmd_range(struct mm_struct *mm, pmd_t *pmd, unsigned long local_irq_save(flags); arch_enter_lazy_mmu_mode(); start_pte = pte_offset_map(pmd, addr); + if (!start_pte) + goto out; for (pte = start_pte; pte < start_pte + PTRS_PER_PTE; pte++) { unsigned long pteval = pte_val(*pte); if (pteval & H_PAGE_HASHPTE) hpte_need_flush(mm, addr, pte, pteval, 0); addr += PAGE_SIZE; } + pte_unmap(start_pte); +out: arch_leave_lazy_mmu_mode(); local_irq_restore(flags); } diff --git a/arch/powerpc/mm/book3s64/subpage_prot.c b/arch/powerpc/mm/book3s64/subpage_prot.c index b75a9fb99599..0dc85556dec5 100644 --- a/arch/powerpc/mm/book3s64/subpage_prot.c +++ b/arch/powerpc/mm/book3s64/subpage_prot.c @@ -71,6 +71,8 @@ static void hpte_flush_range(struct mm_struct *mm, unsigned long addr, if (pmd_none(*pmd)) return; pte = pte_offset_map_lock(mm, pmd, addr, &ptl); + if (!pte) + return; arch_enter_lazy_mmu_mode(); for (; npages > 0; --npages) { pte_update(mm, addr, pte, 0, 0, 0); |