Electrical computers and digital data processing systems: input/ – Input/output data processing – Direct memory accessing
Reexamination Certificate
2006-03-07
2006-03-07
Huynh, Kim (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Direct memory accessing
C710S003000, C710S029000, C710S031000, C710S033000, C711S213000, C712S028000
Reexamination Certificate
active
07010626
ABSTRACT:
A method and an apparatus are provided for prefetching data from a system memory to a cache for a direct memory access (DMA) mechanism in a computer system. A DMA mechanism is set up for a processor. A load access pattern of the DMA mechanism is detected. At least one potential load of data is predicted based on the load access pattern. In response to the prediction, the data is prefetched from a system memory to a cache before a DMA command requests the data.
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CARR LLP
Chen Alan S
Gerhardt Diana R.
Huynh Kim
International Business Machines - Corporation
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