Context tracking for multiple virtualization layers in a virtually tagged cache
US11119945B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2020 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Apr 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/657
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system of handling electronic information having a virtually tagged cache having a directory and a plurality of entries containing data, the directory containing multiple entries, each entry configured to comprise at least a virtual address and one of a plurality of context tags, wherein each context tag is an encoding for one of a plurality of layers of address space; a context tag table having a plurality of entries, each entry configured to map one of the plurality of context tags to one of the plurality of layers of space; and a scratch register containing a current context tag for a current layer of address space on which the processor is operating. The virtually tagged cache is configured to preserve information in the virtually tagged cache when performing a context switch in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.