diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-powerpc/pgalloc-64.h | 3 | ||||
| -rw-r--r-- | include/asm-powerpc/tlb.h | 9 |
2 files changed, 11 insertions, 1 deletions
diff --git a/include/asm-powerpc/pgalloc-64.h b/include/asm-powerpc/pgalloc-64.h index d9a3a8c..94d0294 100644 --- a/include/asm-powerpc/pgalloc-64.h +++ b/include/asm-powerpc/pgalloc-64.h @@ -90,7 +90,8 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address) { - return virt_to_page(pte_alloc_one_kernel(mm, address)); + pte_t *pte = pte_alloc_one_kernel(mm, address); + return pte ? virt_to_page(pte) : NULL; } static inline void pte_free_kernel(pte_t *pte) diff --git a/include/asm-powerpc/tlb.h b/include/asm-powerpc/tlb.h index 0a17682..6671404 100644 --- a/include/asm-powerpc/tlb.h +++ b/include/asm-powerpc/tlb.h @@ -38,6 +38,15 @@ extern void pte_free_finish(void); static inline void tlb_flush(struct mmu_gather *tlb) { + struct ppc64_tlb_batch *tlbbatch = &__get_cpu_var(ppc64_tlb_batch); + + /* If there's a TLB batch pending, then we must flush it because the + * pages are going to be freed and we really don't want to have a CPU + * access a freed page because it has a stale TLB + */ + if (tlbbatch->index) + __flush_tlb_pending(tlbbatch); + pte_free_finish(); } |
