diff --git a/src/amd/common/sid.h b/src/amd/common/sid.h
index 9924a2b2aa0..919e3c7b6f1 100644
--- a/src/amd/common/sid.h
+++ b/src/amd/common/sid.h
@@ -220,6 +220,7 @@
 #define PKT3_LOAD_UCONFIG_REG       0x5E /* GFX7+ */
 #define PKT3_LOAD_SH_REG            0x5F
 #define PKT3_LOAD_CONTEXT_REG       0x61
+#define PKT3_LOAD_SH_REG_INDEX      0x63 /* GFX8+ */
 #define PKT3_SET_CONFIG_REG         0x68
 #define PKT3_SET_CONTEXT_REG        0x69
 #define PKT3_SET_SH_REG             0x76