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:
Sep. 16, 2008
Filed:
Mar. 31, 2004
Van Hoa Lee, Cedar Park, TX (US);
Van Hoa Lee, Cedar Park, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, computer program product, and a data processing system for supporting memory addresses with holes is provided. A first physical address range allocated for system memory for an operating system run by a processor configured to support logical partitioning is virtualized to produce a first logical address range. A second physical address range allocated for system memory for the operating system is virtualized to produce a second logical address range. The first physical address range and the second physical address range are non-contiguous. Virtualization of the first and second physical address ranges is had such that the first logical address range and the second logical address range are contiguous. A memory mapped input/output physical address range that is intermediate the first physical address range and the second physical address range is virtualized to produce a third logical address range. A lowermost logical address of the third logical address range exceeds a respective upper most logical address of the first and second logical address ranges.