Apparatus and method for secure memory access using trust domains
US10761996B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2018 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Oct 23, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/1052
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Examples include an apparatus which accesses secure pages in a trust domain using secure lookups in first and second sets of page tables. For example, one embodiment of the processor comprises: a decoder to decode a plurality of instructions including instructions related to a trusted domain; execution circuitry to execute a first one or more of the instructions to establish a first trusted domain using a first trusted domain key, the trusted domain key to be used to encrypt memory pages within the first trusted domain; and the execution circuitry to execute a second one or more of the instructions to associate a first process address space identifier (PASID) with the first trusted domain, the first PASID to uniquely identify a first execution context associated with the first trusted domain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.