1 files changed, 2 insertions, 0 deletions

diff --git a/include/xen/interface/io/kbdif.h b/include/xen/interface/io/kbdif.h
index fb97f4284ffd..8066c7849fbe 100644
--- a/include/xen/interface/io/kbdif.h
+++ b/include/xen/interface/io/kbdif.h
@@ -49,6 +49,7 @@ struct xenkbd_motion {
         uint8_t type;           /* XENKBD_TYPE_MOTION */
         int32_t rel_x;          /* relative X motion */
         int32_t rel_y;          /* relative Y motion */
+        int32_t rel_z;          /* relative Z motion (wheel) */
 };
 
 struct xenkbd_key {
@@ -61,6 +62,7 @@ struct xenkbd_position {
         uint8_t type;           /* XENKBD_TYPE_POS */
         int32_t abs_x;          /* absolute X position (in FB pixels) */
         int32_t abs_y;          /* absolute Y position (in FB pixels) */
+        int32_t rel_z;          /* relative Z motion (wheel) */
 };
 
 #define XENKBD_IN_EVENT_SIZE 40