vhost: Fix address calculation in vhost_dev_sync_region()

We still need advance address even we find there's no dirty pages in
current chunk.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/hw/vhost.c b/hw/vhost.c
index 8586f66..6082da2 100644 (file)
--- a/hw/vhost.c
+++ b/hw/vhost.c
@@ -37,6 +37,7 @@ static void vhost_dev_sync_region(struct vhost_dev *dev,
         /* We first check with non-atomic: much cheaper,
          * and we expect non-dirty to be the common case. */
         if (!*from) {
+            addr += VHOST_LOG_CHUNK;
             continue;
         }
         /* Data must be read atomically. We don't really