Method and apparatus to efficiently maintain cache coherency by reading/writing a domain state field associated with a tag entry within a cache tag directory. A value may be assigned to a domain state field of a tag entry in a cache tag directory. The cache tag directory may belong to a hierarchy of cache tag directories. Each tag entry may be associated with a cache line from a cache belonging to a first domain. The first domain may contain multiple caches. The value of the domain state field may indicate whether its associated cache line can be read or changed.
申请公布号
US2014052920(A1)
申请公布日期
2014.02.20
申请号
US201113995991
申请日期
2011.12.29
申请人
STEELY, JR. SIMON C.;HASENPLAUGH WILLIAM C.;EMER JOEL S.
发明人
STEELY, JR. SIMON C.;HASENPLAUGH WILLIAM C.;EMER JOEL S.