diff --git a/common/include/common/KVMFR.h b/common/include/common/KVMFR.h
index 9166802c..9075f03e 100644
--- a/common/include/common/KVMFR.h
+++ b/common/include/common/KVMFR.h
@@ -28,7 +28,9 @@
 #include "types.h"
 
 #define KVMFR_MAGIC   "KVMFR---"
-#define KVMFR_VERSION 10
+#define KVMFR_VERSION 11
+
+#define KVMFR_MAX_DAMAGE_RECTS 64
 
 #define LGMP_Q_POINTER     1
 #define LGMP_Q_FRAME       2
@@ -66,17 +68,19 @@ KVMFRCursor;
 
 typedef struct KVMFRFrame
 {
-  uint32_t      formatVer;         // the frame format version number
-  FrameType     type;              // the frame data type
-  uint32_t      width;             // the frame width
-  uint32_t      height;            // the frame height
-  uint32_t      realHeight;        // the real height if the frame was truncated due to low mem
-  FrameRotation rotation;          // the frame rotation
-  uint32_t      stride;            // the row stride (zero if compressed data)
-  uint32_t      pitch;             // the row pitch  (stride in bytes or the compressed frame size)
-  uint32_t      offset;            // offset from the start of this header to the FrameBuffer header
-  uint32_t      mouseScalePercent; // movement scale factor of the mouse (relates to DPI of display, 100 = no scale)
-  bool          blockScreensaver;  // whether the guest has requested to block screensavers
+  uint32_t        formatVer;          // the frame format version number
+  FrameType       type;               // the frame data type
+  uint32_t        width;              // the frame width
+  uint32_t        height;             // the frame height
+  uint32_t        realHeight;         // the real height if the frame was truncated due to low mem
+  FrameRotation   rotation;           // the frame rotation
+  uint32_t        stride;             // the row stride (zero if compressed data)
+  uint32_t        pitch;              // the row pitch  (stride in bytes or the compressed frame size)
+  uint32_t        offset;             // offset from the start of this header to the FrameBuffer header
+  uint32_t        damageRectsCount;   // the number of damage rectangles (zero for full-frame damage)
+  FrameDamageRect damageRects[KVMFR_MAX_DAMAGE_RECTS];
+  uint32_t        mouseScalePercent;  // movement scale factor of the mouse (relates to DPI of display, 100 = no scale)
+  bool            blockScreensaver;   // whether the guest has requested to block screensavers
 }
 KVMFRFrame;
 
diff --git a/common/include/common/types.h b/common/include/common/types.h
index cf1b3491..b308dd4e 100644
--- a/common/include/common/types.h
+++ b/common/include/common/types.h
@@ -21,6 +21,8 @@
 #ifndef _LG_TYPES_H_
 #define _LG_TYPES_H_
 
+#include <stdint.h>
+
 struct Point
 {
   int x, y;
@@ -61,6 +63,15 @@ typedef enum FrameRotation
 }
 FrameRotation;
 
+typedef struct FrameDamageRect
+{
+  uint32_t x;
+  uint32_t y;
+  uint32_t width;
+  uint32_t height;
+}
+FrameDamageRect;
+
 extern const char * FrameTypeStr[FRAME_TYPE_MAX];
 
 typedef enum CursorType