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:
Jul. 17, 2012
Filed:
Jan. 19, 2009
John E. Watkins, Sunnyvale, CA (US);
John E. Watkins, Sunnyvale, CA (US);
Oracle America, Inc., Redwood City, CA (US);
Abstract
A method for reducing address space in a shared virtualized I/O device includes allocating hardware resources including variable resources and permanent resources, to one or more functions. The method also includes allocating address space for an I/O mapping of the resources in a system memory, and assigning a respective portion of that address space for each function. The method further includes assigning space within each respective portion for variable resources available for allocation to the function to which the respective portion is assigned, and further assigning space within each respective portion for a set of permanent resources that have been allocated to the function to which the respective portion is assigned. The method further includes providing a translation table having a plurality of entries, and storing within each entry of the translation table, a different internal address of a permanent resource that has been allocated to a particular function.