D4.7.1 MakeUnique第1句A MakeUnique transaction is used in a region of memory that is Shareable with other masters. The MakeUnique transaction ensures that:• The cache line can be held in a Unique state. This permits the master to carry out a store operation to the cache line, but the transaction does not obtain a copy of the data for the master.• All other copies of the cache line are removed./