Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2011-07-19
2011-07-19
Ellis, Kevin L (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S152000
Reexamination Certificate
active
07984256
ABSTRACT:
A data processing system includes a plurality of requestors and a memory controller for a system memory. In response to receiving from the requestor a read-type request targeting a memory block in the system memory, the memory controller protects the memory block from modification, and in response to an indication that the memory controller is responsible for servicing the read-type request, the memory controller transmits the memory block to the requestor. Prior to receipt of the memory block by the requestor, the memory controller ends protection of the memory block from modification, and the requestor begins protection of the memory block from modification. In response to receipt of the memory block, the requestor ends its protection of the memory block from modification.
REFERENCES:
patent: 6892283 (2005-05-01), Arimilli et al.
Fields, Jr. James S.
Guthrie Guy L.
Hollaway, Jr. John T.
Williams Derek E.
Cygiel Gary W
Dillon & Yudell LLP
Ellis Kevin L
International Business Machines - Corporation
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