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-rw-r--r--hw/virtio/virtio.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 6ce5823898..de89e8104a 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -2706,7 +2706,12 @@ void virtio_notify_config(VirtIODevice *vdev)
 
     virtio_set_isr(vdev, 0x3);
     vdev->generation++;
-    virtio_notify_vector(vdev, vdev->config_vector);
+
+    if (qemu_in_iothread()) {
+        defer_call(virtio_notify_irqfd_deferred_fn, &vdev->config_notifier);
+    } else {
+        virtio_notify_vector(vdev, vdev->config_vector);
+    }
 }
 
 static bool virtio_device_endian_needed(void *opaque)