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:
Mar. 20, 2012
Filed:
Apr. 16, 2007
Stuart Zachary Jacobs, Lakeville, MN (US);
David Anthony Larson, Rochester, MN (US);
Naresh Nayar, Rochester, MN (US);
Jonathan Ross Van Niewaal, Rochester, MN (US);
Kenneth Charles Vossen, Rochester, MN (US);
Stuart Zachary Jacobs, Lakeville, MN (US);
David Anthony Larson, Rochester, MN (US);
Naresh Nayar, Rochester, MN (US);
Jonathan Ross Van Niewaal, Rochester, MN (US);
Kenneth Charles Vossen, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Maintaining data integrity for a logical partition by enabling nonintrusive switching of page tables used during a migration of the logical partition from a source computer system to a target computer system. A first page table stores a plurality of page entries made within a logically partitioned environment. A second page table stores one or more page entries generated during the migration. After migration, the processor page table pointer is switched to point to the first page table. A page entry in the second page table corresponding to a page entry made to the first page table by the logical partition may be invalidated in response to a page table hypervisor call made by the logical partition. In parallel, a plurality of entries generated during the migration of the logical partition in the second page table may be read through and invalidated.