From: Linhaifeng <haifeng....@huawei.com> Same as rte_vhost_enqueue_burst we should cast used->idx to volatile before notify guest.
Signed-off-by: Linhaifeng <haifeng.lin at huawei.com> --- lib/librte_vhost/vhost_rxtx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c index 535c7a1..8d674d1 100644 --- a/lib/librte_vhost/vhost_rxtx.c +++ b/lib/librte_vhost/vhost_rxtx.c @@ -722,7 +722,7 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id, } rte_compiler_barrier(); - vq->used->idx += entry_success; + *(volatile uint16_t *)&vq->used->idx += entry_success; /* Kick guest if required. */ if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT)) eventfd_write((int)vq->callfd, 1); -- 1.8.5.2.msysgit.0