Mechanism for avoiding check stops in speculative accesses...

Electrical computers and digital processing systems: processing – Dynamic instruction dependency checking – monitoring or...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

10424527

ABSTRACT:
A method and processor for avoiding check stops in speculative accesses. An execution unit, e.g., load/store unit, may be coupled to a queue configured to store instructions. A register, coupled to the execution unit, may be configured to store a value corresponding to an address in physical memory. When the processor is operating in real mode, the execution unit may retrieve the value stored in the register. Upon the execution unit receiving a speculative instruction, e.g., speculative load instruction, from the queue, a determination may be made as to whether the address of the speculative instruction is at or below the retrieved value. If the address of the speculative instruction is at or below this value, then the execution unit may safely speculatively execute this instruction while avoiding a check stop since all the addresses at or below this value are known to exist in physical memory.

REFERENCES:
patent: 5561814 (1996-10-01), Glew et al.
patent: 5692121 (1997-11-01), Bozso et al.
patent: 5954825 (1999-09-01), Kaiser et al.
patent: 5956753 (1999-09-01), Glew et al.
patent: 6502208 (2002-12-01), McLaughlin et al.
patent: 6697971 (2004-02-01), Dwyer
patent: 6807616 (2004-10-01), McGrath et al.
“Electrical Engineering Dictionary”; 2000; CRC Press LLC.
Hennessy et al.; “Computer Architecture: A Quantitative Approach”; 3rd Edition; May 2002.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Mechanism for avoiding check stops in speculative accesses... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mechanism for avoiding check stops in speculative accesses..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanism for avoiding check stops in speculative accesses... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3916926

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.