Actually, you should'nt do math on Clock in the config files.

python/m5/config.py:
    Clock should not be a NumericParamValue since math on it can be
    ambiguous.  (As the comment clearly says.)

--HG--
extra : convert_revision : 74f8ec846c6a980d92e0bf4bf1c7fac73a75b923

python/m5/config.py

@@ -1240,7 +1240,7 @@ class RootClock(ParamValue):
 # A generic frequency and/or Latency value.  Value is stored as a latency,
 # but to avoid ambiguity this object does not support numeric ops (* or /).
 # An explicit conversion to a Latency or Frequency must be made first.
-class Clock(NumericParamValue):
+class Clock(ParamValue):
     def __init__(self, value):
         self.value = getLatency(value)