1 files changed, 5 insertions, 0 deletions
diff --git a/include/hw/virtio/virtio-mmio.h b/include/hw/virtio/virtio-mmio.h
index d4c4c386ab..090f7730e7 100644
--- a/include/hw/virtio/virtio-mmio.h
+++ b/include/hw/virtio/virtio-mmio.h
@@ -49,12 +49,17 @@ typedef struct VirtIOMMIOQueue {
     uint32_t used[2];
 } VirtIOMMIOQueue;
 
+#define VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT 1
+#define VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD \
+        (1 << VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT)
+
 struct VirtIOMMIOProxy {
     /* Generic */
     SysBusDevice parent_obj;
     MemoryRegion iomem;
     qemu_irq irq;
     bool legacy;
+    uint32_t flags;
     /* Guest accessible state needing migration and reset */
     uint32_t host_features_sel;
     uint32_t guest_features_sel;