TDX islands with self-contained scope enabling TDX KeyID scaling
US11436342B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2019 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Dec 26, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45595
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed embodiments relate to trust domain islands with self-contained scope. In one example, a system includes multiple sockets, each including multiple cores, multiple multi-key total memory encryption (MK-TME) circuits, multiple memory controllers, and a trust domain island resource manager (TDIRM) to: initialize a trust domain island (TDI) island control structure (TDICS) associated with a TD island, initialize a trust domain island protected memory (TDIPM) associated with the TD island, identify a host key identifier (HKID) in a key ownership table (KOT), assign the HKID to a cryptographic key and store the HKID in the TDICS, associate one of the plurality of cores with the TD island, add a memory page from an address space of the first core to the TDIPM, and transfer execution control to the first core to execute the TDI, and wherein a number of HKIDs available in the system is increased as the memory mapped to the TD island is decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.