Apparatus and method for providing pre-translated segments...

Details Apparatus and method for providing pre-translated segments... Apparatus and method for providing pre-translated segments...

2006-10-03

2006-10-03

Nguyen, Hiep T. (Department: 2187)

Electrical computers and digital processing systems: memory

Address formation

Address mapping

C711S207000

Reexamination Certificate

active

07117337

ABSTRACT:
A mechanism for generating pre-translated segments for use in virtual to real address translation is provided in which segments that are determined to meet a density threshold are promoted to a pre-translated segment class. The pages of these segments are moved to a contiguous portion of memory and the segment table entry corresponding to the segment is updated to indicate the segment to be a pre-translated segment and to include the base real address for the contiguous portion of memory. In one embodiment, as each page is moved, its page table entry is updated to point to the new location of the page so that the page is still accessible during promotion of the segment to a pre-translated segment. In this way, virtual-to-real address translation may be performed by concatenating the segment base real address, the page identifier, and a byte offset into the page.

REFERENCES:
patent: 4380797 (1983-04-01), Desyllas et al.
patent: 5321836 (1994-06-01), Crawford et al.
patent: 5706461 (1998-01-01), Branstad et al.
patent: 5956751 (1999-09-01), Lai
patent: 5960466 (1999-09-01), Belgard
patent: 6226733 (2001-05-01), Belgard
patent: 6308247 (2001-10-01), Ackerman et al.
IBM Technical Disclosure Bulletin, “Segment Translation Lookaside Entries”, vol. 27, No. 2, Jul. 1984, p. 1251.

Affiliated with

Also associated with

Rating

Apparatus and method for providing pre-translated segments... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for providing pre-translated segments..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for providing pre-translated segments... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3660476