Patent · US Active

Method and apparatus by utilizing platform support for direct memory access remapping by remote DMA (“RDMA”)-capable devices

US7702826B2 · kind B2 · utility

15Cited by

3References

24Claims

0Family size

Assignee

Intel Corporation · US

Inventors

Ali S. Oztaskin · Beaverton, US
Rajesh Madukkarumukumana · Portland, US
Greg Regnier · Portland, US

Key dates

Filing date	Dec 28, 2005
Grant date	Apr 20, 2010
Priority date	—
Expiry date	Oct 20, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG06F13/28
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An apparatus and method related to performing Remote Direct Memory Access Request (“RDMA”) is presented. In one embodiment, the apparatus comprises Remote direct memory access (“RDMA”) logic that executes a direct memory access (“DMA”) request from the remote peer. The apparatus further comprising a protection checking logic to verify a key and a target address in the DMA request and conversion logic to convert the target address to an input/output virtual address (“IOVA”) if the conversion is required. The IOVA is to be translated to the host physical address by an address translation unit at another hardware subsystem.

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