Memory access instructions that include permission values for additional protection
US10795679B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2018 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Oct 1, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/6218
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for executing an augmented program instruction are described. An example method may include a central processing unit receiving an executable program instruction. The central processing unit determines that the executable program instruction is an augmented program instruction. The augmented program instruction may include operands that provide input for an operation to be performed and an additional operand specifying a validation permission value to be compared to a permission value associated with a page table entry referenced by the augmented program instruction. Upon determining that the validation permission value specified in the augmented program instruction matches the permission value associated with the page table entry referenced by the augmented program instruction, the central processing unit performing the operation specified by the augmented program instruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.