#define I915_CONTEXT_ENGINES_EXT_LOAD_BALANCE 0 /* see i915_context_engines_load_balance */
 #define I915_CONTEXT_ENGINES_EXT_BOND 1 /* see i915_context_engines_bond */
 #define I915_CONTEXT_ENGINES_EXT_PARALLEL_SUBMIT 2 /* see i915_context_engines_parallel_submit */
-       struct i915_engine_class_instance engines[0];
+       struct i915_engine_class_instance engines[];
 } __attribute__((packed));
 
 #define I915_DEFINE_CONTEXT_PARAM_ENGINES(name__, N__) struct { \
        I915_OAR_FORMAT_A32u40_A4u32_B8_C8,
        I915_OA_FORMAT_A24u40_A14u32_B8_C8,
 
+       /* MTL OAM */
+       I915_OAM_FORMAT_MPEC8u64_B8_C8,
+       I915_OAM_FORMAT_MPEC8u32_B8_C8,
+
        I915_OA_FORMAT_MAX          /* non-ABI */
 };
 
         */
        DRM_I915_PERF_PROP_POLL_OA_PERIOD,
 
+       /**
+        * Multiple engines may be mapped to the same OA unit. The OA unit is
+        * identified by class:instance of any engine mapped to it.
+        *
+        * This parameter specifies the engine class and must be passed along
+        * with DRM_I915_PERF_PROP_OA_ENGINE_INSTANCE.
+        *
+        * This property is available in perf revision 6.
+        */
+       DRM_I915_PERF_PROP_OA_ENGINE_CLASS,
+
+       /**
+        * This parameter specifies the engine instance and must be passed along
+        * with DRM_I915_PERF_PROP_OA_ENGINE_CLASS.
+        *
+        * This property is available in perf revision 6.
+        */
+       DRM_I915_PERF_PROP_OA_ENGINE_INSTANCE,
+
        DRM_I915_PERF_PROP_MAX /* non-ABI */
 };