Electrical computers and digital data processing systems: input/ – Interrupt processing – Programmable interrupt processing
Reexamination Certificate
2011-05-31
2011-05-31
Dang, Khanh (Department: 2111)
Electrical computers and digital data processing systems: input/
Interrupt processing
Programmable interrupt processing
C714S738000
Reexamination Certificate
active
07953914
ABSTRACT:
Embodiments of the invention provide an interrupt handler configured to distinguish between critical and non-critical unrecoverable memory errors, yielding different actions for each. Doing so may allow a system to recover from certain memory errors without having to terminate a running process. In addition, when an operating system critical task experiences an unrecoverable error, such a task may be acting on behalf of a non-critical process (e.g., when swapping out a virtual memory page). When this occurs, an interrupt handler may respond to a memory error with the same response that would result had the process itself performed the memory operation. Further, firmware may be configured to perform diagnostics to identify potential memory errors and alert the operating system before a memory region state change occurs, such that the memory error would become critical.
REFERENCES:
patent: 3644902 (1972-02-01), Beausoleil
patent: 3681757 (1972-08-01), Allen et al.
patent: 3800294 (1974-03-01), Lawlor
patent: 4535455 (1985-08-01), Peterson
patent: 4621364 (1986-11-01), Tschoepe
patent: 5072450 (1991-12-01), Helm et al.
patent: 5504859 (1996-04-01), Gustafson et al.
patent: 5511164 (1996-04-01), Brunmeier et al.
patent: 6047392 (2000-04-01), Liddell et al.
patent: 6158025 (2000-12-01), Brisse et al.
patent: 6418068 (2002-07-01), Raynham
patent: 6845469 (2005-01-01), Hicks et al.
patent: 6920587 (2005-07-01), Dawkins et al.
patent: 6981079 (2005-12-01), Dawkins et al.
patent: 2002/0144004 (2002-10-01), Gaur et al.
patent: 2003/0051190 (2003-03-01), Marisetty et al.
patent: 2003/0212873 (2003-11-01), Lee et al.
patent: 2004/0205384 (2004-10-01), Lai et al.
patent: 2005/0268052 (2005-12-01), Hepkin et al.
patent: 2006/0184846 (2006-08-01), Hillier et al.
patent: 2007/0061612 (2007-03-01), Henderson et al.
patent: 2008/0022154 (2008-01-01), Endou
U.S. Patent Application entitled “Memory Metadata Used to Handle Memory Errors Without Process Termination” by Marc A. Gollub et al., filed Jun. 3, 2008.
U.S. Patent Application entitled “Resilience to Memory Errors with Firmware Assistance”by Marc A. Gollub et al., filed Jun. 3, 2008.
Gollub Marc A.
Shelley Zane C.
Williams, III Alwood P.
Dang Khanh
International Business Machines - Corporation
Patterson & Sheridan LLP
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