diff --git a/src/intel/genxml/gen20.xml b/src/intel/genxml/gen20.xml
index 60b7aa1387a..eece94dc486 100644
--- a/src/intel/genxml/gen20.xml
+++ b/src/intel/genxml/gen20.xml
@@ -964,6 +964,16 @@
     <field name="Argument Buffer Start Address" start="130" end="191" type="address" />
     <field name="COMPUTE_WALKER_BODY" start="192" end="1439" type="COMPUTE_WALKER_BODY" />
   </instruction>
+  <instruction name="MI_MEM_FENCE" bias="1" length="1">
+    <field name="Fence Type" start="0" end="1" type="uint" prefix="FENCE_TYPE">
+      <value name="RELEASE" value="0" />
+      <value name="ACQUIRE" value="1" />
+      <value name="MI_WRITE" value="3" />
+    </field>
+    <field name="MI Command Sub Opcode" start="17" end="22" type="uint" default="0" />
+    <field name="MI Command Opcode" start="23" end="28" type="uint" default="9" />
+    <field name="Command Type" start="29" end="31" type="uint" default="0" />
+  </instruction>
   <instruction name="MI_SEMAPHORE_WAIT" bias="2" length="5">
     <field name="DWord Length" start="0" end="7" type="uint" default="3" />
     <field name="Compare Operation" start="12" end="14" type="uint" prefix="COMPARE">