#define   GUC_PF_NOTIFY_VF_PAUSE_DONE                  3u
 #define   GUC_PF_NOTIFY_VF_FIXUP_DONE                  4u
 
+/**
+ * DOC: PF2GUC_UPDATE_VGT_POLICY
+ *
+ * This message is used by the PF to set `GuC VGT Policy KLVs`_.
+ *
+ * This message must be sent as `CTB HXG Message`_.
+ *
+ *  +---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  |
+ *  +===+=======+==============================================================+
+ *  | 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_HOST_                                |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   | 30:28 | TYPE = GUC_HXG_TYPE_REQUEST_                                 |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   | 27:16 | MBZ                                                          |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   |  15:0 | ACTION = _`GUC_ACTION_PF2GUC_UPDATE_VGT_POLICY` = 0x5502     |
+ *  +---+-------+--------------------------------------------------------------+
+ *  | 1 |  31:0 | **CFG_ADDR_LO** - dword aligned GGTT offset that             |
+ *  |   |       | represents the start of `GuC VGT Policy KLVs`_ list.         |
+ *  +---+-------+--------------------------------------------------------------+
+ *  | 2 |  31:0 | **CFG_ADDR_HI** - upper 32 bits of above offset.             |
+ *  +---+-------+--------------------------------------------------------------+
+ *  | 3 |  31:0 | **CFG_SIZE** - size (in dwords) of the config buffer         |
+ *  +---+-------+--------------------------------------------------------------+
+ *
+ *  +---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  |
+ *  +===+=======+==============================================================+
+ *  | 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_GUC_                                 |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   | 30:28 | TYPE = GUC_HXG_TYPE_RESPONSE_SUCCESS_                        |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   |  27:0 | **COUNT** - number of KLVs successfully applied              |
+ *  +---+-------+--------------------------------------------------------------+
+ */
+#define GUC_ACTION_PF2GUC_UPDATE_VGT_POLICY                    0x5502u
+
+#define PF2GUC_UPDATE_VGT_POLICY_REQUEST_MSG_LEN               (GUC_HXG_REQUEST_MSG_MIN_LEN + 3u)
+#define PF2GUC_UPDATE_VGT_POLICY_REQUEST_MSG_0_MBZ             GUC_HXG_REQUEST_MSG_0_DATA0
+#define PF2GUC_UPDATE_VGT_POLICY_REQUEST_MSG_1_CFG_ADDR_LO     GUC_HXG_REQUEST_MSG_n_DATAn
+#define PF2GUC_UPDATE_VGT_POLICY_REQUEST_MSG_2_CFG_ADDR_HI     GUC_HXG_REQUEST_MSG_n_DATAn
+#define PF2GUC_UPDATE_VGT_POLICY_REQUEST_MSG_3_CFG_SIZE                GUC_HXG_REQUEST_MSG_n_DATAn
+
+#define PF2GUC_UPDATE_VGT_POLICY_RESPONSE_MSG_LEN              GUC_HXG_RESPONSE_MSG_MIN_LEN
+#define PF2GUC_UPDATE_VGT_POLICY_RESPONSE_MSG_0_COUNT          GUC_HXG_RESPONSE_MSG_0_DATA0
+
 /**
  * DOC: PF2GUC_VF_CONTROL
  *