Data processing system and computer program product to allow...

Details Data processing system and computer program product to allow... Data processing system and computer program product to allow...

2011-05-03

2011-05-03

Gu, Shawn X (Department: 2189)

Electrical computers and digital processing systems: memory

Address formation

Address mapping

C710S022000, C711S205000, C711S207000, C711SE12035

Reexamination Certificate

active

07937555

ABSTRACT:
A method, system, and computer instructions for providing valid translation entries in the TCE table for all supported DMA addresses to prevent the occurrence of system errors due to prefetching. A page is reserved in system memory. This reserved page is made unavailable to the operating system and may not be utilized by any software in the system. The reserved page is also written with all bytes set to 0xFF. The system firmware then selects a region in system memory for the TCE table. The TCE table is initialized, with all entries within the TCE table initialized to be valid and contain the corresponding address of the reserved page.

REFERENCES:
patent: 6675329 (2004-01-01), Im
patent: 6981120 (2005-12-01), Barrus et al.
patent: 7373479 (2008-05-01), Lee
patent: 2002/0124063 (2002-09-01), Foster et al.
patent: 2002/0124194 (2002-09-01), Dawkins et al.
Tanenbaum et al., “Operating Systems: Design and Implementation”, Second Edition, Prentice Hall, Jan. 15, 1997, pp. 327-329.

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