IN-MEMORY, IN-PAGE DIRECTORY CACHE COHERENCY SCHEME

摘要

An in-memory and an in-page directory cache coherency technique capable of applying the increase of a processor or processor cores are provided to secure a page hit access which becomes the same as the directory cache hit. A memory access request about a cache line which is requested from one processor is received(302). A memory page storing a required cache line is brought from a memory unit. Coherency information related to the required cache line is accessed from the memory unit(304). The memory page comprises a directory line having the consistency information corresponding to the required cache line. According to the consistency information, data related to the required cache line is read(306). The data is returned by the processor(308).