diff options
| author | Stefan Hajnoczi | 2017-02-22 17:37:33 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin | 2017-03-02 06:14:27 +0100 |
| commit | 3cdf847329a9911780372e6d8239839446d09d9f (patch) | |
| tree | 4141939f3d23e00a7220667e0a060922dce162d1 /hw/virtio | |
| parent | virtio: guard vring access when setting notification (diff) | |
| download | qemu-3cdf847329a9911780372e6d8239839446d09d9f.tar.gz qemu-3cdf847329a9911780372e6d8239839446d09d9f.tar.xz qemu-3cdf847329a9911780372e6d8239839446d09d9f.zip | |
virtio: invalidate memory in vring_set_avail_event()
Remember to invalidate the avail event field so the memory pages are
marked dirty.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Diffstat (limited to 'hw/virtio')
| -rw-r--r-- | hw/virtio/virtio.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index bf8a644677..294c909cce 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -282,6 +282,7 @@ static inline void vring_set_avail_event(VirtQueue *vq, uint16_t val) caches = atomic_rcu_read(&vq->vring.caches); pa = offsetof(VRingUsed, ring[vq->vring.num]); virtio_stw_phys_cached(vq->vdev, &caches->used, pa, val); + address_space_cache_invalidate(&caches->used, pa, sizeof(val)); } void virtio_queue_set_notification(VirtQueue *vq, int enable) |