Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Reexamination Certificate
2007-06-05
2010-11-16
Bragdon, Reginald G (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
C711S122000, C711S134000, C711S133000, C711S118000, C711S151000, C711SE12043, C712S207000
Reexamination Certificate
active
07836262
ABSTRACT:
In one embodiment, a processor may be configured to write ECC granular stores into the data cache, while non-ECC granular stores may be merged with cache data in a memory request buffer. In one embodiment, a processor may be configured to detect that a victim block writeback hits one or more stores in a memory request buffer (or vice versa) and may convert the victim block writeback to a fill. In one embodiment, a processor may speculatively issue stores that are subsequent to a load from a load/store queue, but prevent the update for the stores in response to a snoop hit on the load.
REFERENCES:
patent: 5008886 (1991-04-01), Chinnaswamy et al.
patent: 5235693 (1993-08-01), Chinnaswamy et al.
patent: 5860112 (1999-01-01), Langendorf et al.
patent: 5860117 (1999-01-01), Cherabuddi
patent: 5944815 (1999-08-01), Witt
patent: 6473832 (2002-10-01), Ramagopal et al.
patent: 6473837 (2002-10-01), Hughes et al.
patent: 6477622 (2002-11-01), Normoyle et al.
patent: 6959367 (2005-10-01), Banno
patent: 2002/0169930 (2002-11-01), Hagiwara
patent: 2003/0110356 (2003-06-01), Williams, III
patent: 2004/0103251 (2004-05-01), Alsup
patent: 2005/0138292 (2005-06-01), Sullivan
patent: 2006/0155934 (2006-07-01), Rajamony et al.
Mark Hayter, “Zen and the Art of SOC Design,” Microprocessor Summit 2006, Session MPS-960 High End Processors, P.A. Semi, Inc., 14 pages.
James B. Keller, “The PWRficient Processor Family,” PA Semi, Oct. 2005, 31 pages.
U.S. Appl. No. 11/758,303, filed Jun. 5, 2007.
Gunna Ramesh
Kadambi Sudarshan
Apple Inc.
Bragdon Reginald G
Merkel Lawrence J.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Talukdar Arvind
LandOfFree
Converting victim writeback to a fill does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Converting victim writeback to a fill, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Converting victim writeback to a fill will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4245592