Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2009-06-05
2011-10-25
Beausoliel, Jr., Robert (Department: 2113)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S042000
Reexamination Certificate
active
08046641
ABSTRACT:
In response to a hypervisor page fault for memory that is not resident in a shared memory pool, an I/O paging request is sent to an external storage paging space. In response to a paging service partition encountering an I/O paging error, a paging failure indication is sent to the hypervisor. A simulated machine check interrupt instruction is sent from the hypervisor to the shared memory partition and a machine check handler obtains control. The machine check handler performs data analysis utilizing an error log in an attempt to isolate the I/O paging error to a process or a set of processes in the shared memory partition. The process or set of processes associated with the I/O paging error, or the shared memory partition itself, may be terminated. Finally, the shared memory partition may clear or initialize the page associated with the I/O paging error.
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Hernandez Carol B.
Larson David A.
Nayar Naresh
O'Quin, II John T.
Ricard Gary R.
Beausoliel, Jr. Robert
International Business Machines - Corporation
Manoskey Joseph D
Nock James R.
Zehrer Matthew C.
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