virtio: add MemoryListener to cache ring translations
The cached translations are RCU-protected to allow efficient use
when processing virtqueues.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 0863a25..15efcf2 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -85,6 +85,7 @@
uint32_t generation;
int nvectors;
VirtQueue *vq;
+ MemoryListener listener;
uint16_t device_id;
bool vm_running;
bool broken; /* device in invalid state, needs reset */
