Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2011-03-29
2011-03-29
Ellis, Kevin L (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
Reexamination Certificate
active
07917710
ABSTRACT:
The use of a token-based memory protection technique may provide memory protection in a computer system employing memory virtualization. A token-based memory protection technique may include assigning a unique identifier to an application, process, or thread, and associating the identifier with a block of memory allocated to that application, process, or thread. Subsequent to assigning the identifier, a packet requesting access to that block of memory may include a token to be compared to the identifier. A memory controller may be configured to associate the identifier with the block of memory and to compare the token in the memory request packet to the identifier before granting access. If a second block of memory is subsequently allocated to the application, process, or thread, the identifier may be disassociated with the first block of memory and associated with the second block of memory.
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Freeman Jay R.
Gustafson Phyllis E.
Manczak Olaf
Paleczny Michael H.
Vick Christopher A.
Davidson Chad L
Ellis Kevin L
Kowert Robert C.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Oracle America Inc.
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