Mechanism to save and restore cache and translation trace...

Details Mechanism to save and restore cache and translation trace... Mechanism to save and restore cache and translation trace...

2006-07-06

2009-12-15

Chan, Eddie P (Department: 2183)

Electrical computers and digital processing systems: processing

Processing control

Context preserving (e.g., context swapping, checkpointing,...

C718S108000

Reexamination Certificate

active

07634642

ABSTRACT:
A method and system for efficient context switching are provided. An execution entity that is to be context switched out is allowed to continue executing for a predetermined period of time before being context switched out. During the predetermined period of time in which the execution entity continues to execute, the hardware or an operating system tracks and records its footprint such as the addresses and page and segment table entries and the like accessed by the continued execution. When the execution entity is being context switched back in, its page and segment table and cache states are reloaded for use in its immediate execution.

REFERENCES:
patent: 5727211 (1998-03-01), Gulsen
patent: 6061711 (2000-05-01), Song et al.
patent: 6314510 (2001-11-01), Saulsbury et al.
patent: 6510508 (2003-01-01), Zuraski, Jr. et al.
patent: 7146489 (2006-12-01), Dowling
patent: 2005/0216709 (2005-09-01), Tamai

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