diff options
Diffstat (limited to 'virt')
-rw-r--r-- | virt/kvm/kvm_main.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 64be836f3348..9f32bffd37c0 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c | |||
@@ -357,11 +357,11 @@ static void kvm_mmu_notifier_invalidate_range_end(struct mmu_notifier *mn, | |||
357 | * been freed. | 357 | * been freed. |
358 | */ | 358 | */ |
359 | kvm->mmu_notifier_seq++; | 359 | kvm->mmu_notifier_seq++; |
360 | smp_wmb(); | ||
360 | /* | 361 | /* |
361 | * The above sequence increase must be visible before the | 362 | * The above sequence increase must be visible before the |
362 | * below count decrease but both values are read by the kvm | 363 | * below count decrease, which is ensured by the smp_wmb above |
363 | * page fault under mmu_lock spinlock so we don't need to add | 364 | * in conjunction with the smp_rmb in mmu_notifier_retry(). |
364 | * a smb_wmb() here in between the two. | ||
365 | */ | 365 | */ |
366 | kvm->mmu_notifier_count--; | 366 | kvm->mmu_notifier_count--; |
367 | spin_unlock(&kvm->mmu_lock); | 367 | spin_unlock(&kvm->mmu_lock); |