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Diffstat (limited to 'hw/virtio/vhost-user.c')
-rw-r--r--hw/virtio/vhost-user.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index 2e81f5514f..08e7e63790 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -443,6 +443,7 @@ static int vhost_user_set_mem_table_postcopy(struct vhost_dev *dev,
                                      &offset);
         fd = memory_region_get_fd(mr);
         if (fd > 0) {
+            assert(fd_num < VHOST_MEMORY_MAX_NREGIONS);
             trace_vhost_user_set_mem_table_withfd(fd_num, mr->name,
                                                   reg->memory_size,
                                                   reg->guest_phys_addr,
@@ -455,7 +456,6 @@ static int vhost_user_set_mem_table_postcopy(struct vhost_dev *dev,
             msg.payload.memory.regions[fd_num].guest_phys_addr =
                 reg->guest_phys_addr;
             msg.payload.memory.regions[fd_num].mmap_offset = offset;
-            assert(fd_num < VHOST_MEMORY_MAX_NREGIONS);
             fds[fd_num++] = fd;
         } else {
             u->region_rb_offset[i] = 0;
@@ -1458,9 +1458,11 @@ static int vhost_user_backend_init(struct vhost_dev *dev, void *opaque)
                    "VHOST_USER_PROTOCOL_F_LOG_SHMFD feature.");
     }
 
-    err = vhost_setup_slave_channel(dev);
-    if (err < 0) {
-        return err;
+    if (dev->vq_index == 0) {
+        err = vhost_setup_slave_channel(dev);
+        if (err < 0) {
+            return err;
+        }
     }
 
     u->postcopy_notifier.notify = vhost_user_postcopy_notifier;