Separate cores to secure processes from speculative rogue cache loads
US10713353B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jun 22, 2018 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Dec 29, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/034
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure addresses the meltdown vulnerability resulting from speculative execution in a multi-core processing system. The operating system (OS) can be loaded for execution on one of several processing cores (OS core), while an application can be loaded for execution on another of the processing cores (application core). The OS core uses process page tables that map the entire kernel address space to physical memory. Conversely, the application core uses pages tables that map only a portion of the kernel address space to physical memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.