Changeset 10923:17785cb5a672

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config: Fail if not using all L2 caches in ruby protocols
In the MESI_Three_Level, MESI_Two_Level, MOESI_CMP_directory, and MOESI_CMP_token protocols, if the num_l2caches option is not a power of 2, then all cache banks above the next lowest power of 2 are not addressed and are never used (cache bank selection takes place in mapAddressToRange within src/mem/ruby/slicc_interface/RubySlicc_ComponentMapping).
This changeset adds asserts to the configuration files of the affected protocols to make sure that num_l2caches is a power of 2.
A related behavior is documented in http://gem5.org/Coherence-Protocol-Independent_Memory_Components#Parameters_3, at the bottom of the section on start_index_bit.