Patent · US Active

I/O memory management unit providing self invalidated mapping

US9547603B2 · kind B2 · utility

2Cited by

0References

19Claims

0Family size

Assignee

Wisconsin Alumni Research Foundation · US

Inventors

Arkaprava Basu · Austin, US
Mark D. Hill · Madison, US
Michael M. Swift · Seattle, US

Key dates

Filing date	Aug 28, 2013
Grant date	Jan 17, 2017
Priority date	—
Expiry date	Feb 15, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG06F12/12
WIPO fieldComputer technology
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.