Trust domains for peripheral devices
US11741021B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2022 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Jan 18, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/151
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are various embodiments for various approaches for implementing trust domains to provide boundaries between PCIe devices connected to the same PCIe switch. A first trust identifier can be assigned to a first virtual machine hosted by the computing device. The first trust identifier can also be assigned to a first PCIe device assigned to the first virtual machine. Later, it can be determined that a second PCIe device connected to the PCIe switch is assigned a second trust identifier assigned to a second virtual machine. An Address Control Services (ACS) direct translated bit for peer-to-peer memory requests in the PCIe switch can be disabled in response to a determination that the second PCIe device is associated with the second trust identifier assigned to the second virtual machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.