Information processing apparatus for restricting access to memory area of first program from second program
US9032174B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 2013 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | May 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/145
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A processor determines whether a first program is under execution when a second program is executed, and changes a setting of a memory management unit based on access prohibition information so that a fault occurs when the second program makes an access to a memory when the first program is under execution. Then, the processor determines whether an access from the second program to a memory area used by the first program is permitted based on memory restriction information when the fault occurs while the first program and the second program are under execution, and changes the setting of the memory management unit so that the fault does not occur when the access to the memory area is permitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.