The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2011
Filed:
Jun. 05, 2009
Carol B. Hernandez, Austin, TX (US);
David A. Larson, Rochester, MN (US);
Naresh Nayar, Rochester, MN (US);
John T. O'quin, Ii, Austin, TX (US);
Gary R. Ricard, Chatfield, MN (US);
Kenneth C. Vossen, Rochester, MN (US);
Carol B. Hernandez, Austin, TX (US);
David A. Larson, Rochester, MN (US);
Naresh Nayar, Rochester, MN (US);
John T. O'Quin, II, Austin, TX (US);
Gary R. Ricard, Chatfield, MN (US);
Kenneth C. Vossen, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
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.