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:
Jun. 21, 2011
Filed:
Mar. 25, 2008
Richard Louis Arndt, Austin, TX (US);
Giora Biran, Zichron-Yaakov, IL;
Harvey Gene Kiel, Rochester, MN (US);
Vadim Makhervaks, Austin, TX (US);
Renato John Recio, Austin, TX (US);
Leah Shalev, Zichron-Yaakov, IL;
Jaya Srikrishnan, Wappingers Falls, NY (US);
Richard Louis Arndt, Austin, TX (US);
Giora Biran, Zichron-Yaakov, IL;
Harvey Gene Kiel, Rochester, MN (US);
Vadim Makhervaks, Austin, TX (US);
Renato John Recio, Austin, TX (US);
Leah Shalev, Zichron-Yaakov, IL;
Jaya Srikrishnan, Wappingers Falls, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, system, and computer program product for sharing adapter resources among multiple operating system instances. The present invention provides a mechanism for dynamically allocating virtualized I/O adapter resources. The present invention separates the operation of adapter resource allocation from adapter resource management. Protection attributes within the adapter resource context are used to allow the adapter to enforce access control over the adapter resources. The hypervisor allocates an available adapter resource to a given partition. The adapter is notified of the allocation, and the adapter updates its internal structure to reflect the allocation. The hypervisor may revoke ownership of and reassign adapter resources to another OS instance. In this manner, the allocation described above allows for the simple reassignment of resources from one partition to another.