Multi-root sharing of single-root input/output virtualization
US8521941B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2010 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Nov 29, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/404
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a first embodiment of the present invention, a method for multi-root sharing of a plurality of single root input/output virtualization (SR-IOV) endpoints is provided, the method comprising: CSR redirection to a management processor which either acts as a proxy to execute the CSR request on behalf of the host or filters it and performs an alternate action, downstream routing of memory mapped I/O request packets through the switch in the host's address space and address translation with VF BAR granularity, upstream routing of requests originated by I/O devices by table lookup indexed by Requester ID, and requester ID translation using a fixed local-global RID offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.