[gem5-users] MOESI_CMP_directory coherence protocol

[1154063264--- via gem5-users]

MOESI_CMP_directory-L1cache.sm , what is the difference between the events
Writeback_Ack_Data and Writeback_Ack?

    Writeback_Ack,   desc="Writeback O.K. from directory";
    Writeback_Ack_Data,   desc="Writeback O.K. from directory";

When the Writeback_Ack is triggered, there is no qq_sendWBDataFromTBEToL2, why 
the state
is still converted to I ?
  transition({SI, OI, MI}, Writeback_Ack, I) {
    g_sendUnblock;
    s_deallocateTBE;
    l_popForwardQueue;
  }
  transition({SI, OI, MI}, Writeback_Ack_Data, I) {
    qq_sendWBDataFromTBEToL2;  // always send data
    s_deallocateTBE;
    l_popForwardQueue;
  }
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