Cache-memory control apparatus, cache-memory control method...

Details Cache-memory control apparatus, cache-memory control method... Cache-memory control apparatus, cache-memory control method...

2007-10-31

2010-06-22

Lane, Jack A (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S143000, C711S144000, C711S145000, C711S156000, C711S165000

Reexamination Certificate

active

07743215

ABSTRACT:
A cache-memory control apparatus controls a level-1 (L1) cache and a level-2 (L2) cache having a cache line divided into a plurality of sub-lines for storing data from the L1 cache. The cache-memory control apparatus includes a control-flag adding unit, an L1 cache control unit, and an L2 cache control unit. The control-flag adding unit provides an SP flag to each of the sub-lines. The L1-cache control unit acquires an access virtual address, and, when there is no data at the access virtual address, outputs an L2 cache-access address to the L2-cache control unit. The L2-cache control unit switches the SP flag based on a virtual page number in an L1 index and a physical page number in an L2 index. Based on the SP flag, corresponding one of the sub-lines is written back to the L1 cache.

REFERENCES:
patent: 5045996 (1991-09-01), Barth et al.
patent: 5918245 (1999-06-01), Yung
patent: 7076613 (2006-07-01), Peir et al.
patent: 7096322 (2006-08-01), Sollom et al.
patent: 2004/0268054 (2004-12-01), Peir et al.
patent: 2006/0155934 (2006-07-01), Rajamony et al.
patent: 2008/0301368 (2008-12-01), Kojima et al.
patent: 470574 (1992-02-01), None
patent: 8-006852 (1996-01-01), None
patent: WO 2004/046932 (2004-06-01), None

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