1 files changed, 8 insertions, 2 deletions
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 136c095b7d..f8b0274752 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -934,8 +934,14 @@ static void virtio_gpu_gl_block(void *opaque, bool block)
 {
     VirtIOGPU *g = opaque;
 
-    g->renderer_blocked = block;
-    if (!block) {
+    if (block) {
+        g->renderer_blocked++;
+    } else {
+        g->renderer_blocked--;
+    }
+    assert(g->renderer_blocked >= 0);
+
+    if (g->renderer_blocked == 0) {
         virtio_gpu_process_cmdq(g);
     }
 }