diff options
| -rw-r--r-- | arch/powerpc/mm/tlb_nohash.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c index ab0616b0e6c2..cbd3d069897f 100644 --- a/arch/powerpc/mm/tlb_nohash.c +++ b/arch/powerpc/mm/tlb_nohash.c @@ -284,7 +284,11 @@ void __flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr, struct cpumask *cpu_mask; unsigned int pid; - if (unlikely(!mm)) + /* + * This function as well as __local_flush_tlb_page() must only be called + * for user contexts. + */ + if (unlikely(WARN_ON(!mm))) return; preempt_disable(); |