1 files changed, 8 insertions, 0 deletions

diff --git a/include/xen/interface/io/displif.h b/include/xen/interface/io/displif.h
index 596578d9be3e..fdc279dc4a88 100644
--- a/include/xen/interface/io/displif.h
+++ b/include/xen/interface/io/displif.h
@@ -189,6 +189,13 @@
  *
  *----------------------------- Connector settings ----------------------------
  *
+ * unique-id
+ *      Values:         <string>
+ *
+ *      After device instance initialization each connector is assigned a
+ *      unique ID, so it can be identified by the backend by this ID.
+ *      This can be UUID or such.
+ *
  * resolution
  *      Values:         <width, uint32_t>x<height, uint32_t>
  *
@@ -368,6 +375,7 @@
 #define XENDISPL_FIELD_EVT_CHANNEL      "evt-event-channel"
 #define XENDISPL_FIELD_RESOLUTION       "resolution"
 #define XENDISPL_FIELD_BE_ALLOC         "be-alloc"
+#define XENDISPL_FIELD_UNIQUE_ID        "unique-id"
 
 /*
  ******************************************************************************