Access control in peer-to-peer transactions over a peripheral component bus
US10303647B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2016 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Jul 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45579
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Computing apparatus includes a central processing unit (CPU), which is configured to run concurrently multiple virtual machines, including at least first and second virtual machines. A peripheral component bus is connected to communicate with the CPU. Multiple peripheral devices are connected to communicate via the bus with the CPU and with others of the peripheral devices, including at least first and second peripheral devices that are each respectively partitioned into at least first and second functional entities, which are respectively assigned to serve the at least first and second virtual machines. Access control logic is configured to forward peer-to-peer communications initiated by the functional entities between the peripheral devices over the bus while inhibiting access in the peer-to-peer communications between the functional entities that are assigned to different ones of the virtual machines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.