Method for conducting checkpointing within a writeback cache

摘要

A method for conducting checkpointing within a writeback cache having a cache memory with at least two memory banks. In one embodiment, a first pointer is set to indicate which cache entry of the at least two memory banks contains current data. A second pointer is set to indicate which cache entry of the at least two memory banks contains checkpoint data. Checkpointing is performed by selectively controlling said second pointer or said first pointer.