Method and system of providing a pseudo-precise inclusivity sche

Details Method and system of providing a pseudo-precise inclusivity sche Method and system of providing a pseudo-precise inclusivity sche

1997-04-14

2000-09-05

Cabeca, John W.

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

711122, 711144, G06F 1300, G06F 1208

Patent

active

061157945

ABSTRACT:
A method and system of providing a pseudo-precise inclusivity scheme in a sectored cache memory for maintaining cache coherency within a data-processing system is disclosed. In accordance with the method and system of the present invention, a cache memory includes a multiple of cache lines. The data field of the cache lines is divided into multiple sectors. A state-bit field is associated with each of the cache lines, and the state-bit field is utilized to identify at least four different states of the corresponding cache line. An inclusive-bit field is associated with each of the sectors within each cache lines, and the inclusive-bit field is utilized to identify an inclusivity state of an associated sector. A first of the four states is assigned to provide precise inclusivity states of an associated cache line. A second and a third of the four states is assigned to provide an imprecise inclusivity state of an associated cache line for improving cache line state decoding efficiency.

REFERENCES:
patent: 3733589 (1973-05-01), Thompson
patent: 5530832 (1996-06-01), So et al.
patent: 5584013 (1996-12-01), Cheong et al.
patent: 5706464 (1998-01-01), Moore et al.
patent: 5715428 (1998-02-01), Wang et al.
patent: 5796980 (1998-08-01), Bowles
patent: 5832276 (1998-11-01), Feiste et al.

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