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:
Jan. 17, 2017
Filed:
Aug. 28, 2013
Applicant:
Wisconsin Alumni Research Foundation, Madison, WI (US);
Inventors:
Arkaprava Basu, Madison, WI (US);
Mark D. Hill, Madison, WI (US);
Michael M. Swift, Madison, WI (US);
Assignee:
Wisconsin Alumni Research Foundation, Madison, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/10 (2016.01); G06F 12/12 (2016.01);
U.S. Cl.
CPC ...
G06F 12/1009 (2013.01); G06F 12/1027 (2013.01); G06F 12/12 (2013.01);
Abstract
A memory management unit for I/O devices uses page table entries to translate virtual addresses to physical addresses. The page table entries include removal rules allowing the I/O memory management unit to delete page table entries without CPU involvement significantly reducing the CPU overhead involved in virtualized I/O data transactions.