Fix a virtio ring buffer free run index overflow bug

[palacios.git] / palacios / include / devices / lnx_virtio_pci.h

diff --git a/palacios/include/devices/lnx_virtio_pci.h b/palacios/include/devices/lnx_virtio_pci.h
index 1131feb..5ecf694 100644 (file)
--- a/palacios/include/devices/lnx_virtio_pci.h
+++ b/palacios/include/devices/lnx_virtio_pci.h
@@ -128,6 +128,8 @@ struct virtio_queue {
     uint16_t queue_size;
   
     uint16_t cur_avail_idx;
+    uint16_t last_avail_idx;
+    bool idx_overflow;
 
     addr_t ring_desc_addr;
     addr_t ring_avail_addr;