| 发明名称 |
DATA PROCESSING UNIT HAVING A MEMORY PROTECTION UNIT |
| 摘要 |
In a data processing system having a processor and a memory protection unit (MPU), a method includes scheduling, in the processor, a new process to be executed; writing a process identifier (PID) corresponding to the new process into storage circuitry of the MPU; in response to updating the storage circuitry with the PID, configuring the MPU with region descriptors corresponding to the new process; configuring, by an operating system of the processor, the processor to execute the new process in parallel with the configuring the MPU with the region descriptors; and when the configuring the MPU is complete, giving control to the new process to execute on the processor. |
| 申请公布号 |
US2017090983(A1) |
申请公布日期 |
2017.03.30 |
| 申请号 |
US201514978137 |
申请日期 |
2015.12.22 |
| 申请人 |
FREESCALE SEMICONDUCTOR, INC. |
发明人 |
Kovalev Andrey;Ciusleanu George Adrian;Soja Richard |
| 分类号 |
G06F9/50;G06F12/08;G06F3/06 |
主分类号 |
G06F9/50 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. In a data processing system having a processor and a memory protection unit (MPU), a method comprises:
scheduling, in the processor, a new process to be executed; writing a process identifier (PID) corresponding to the new process into storage circuitry of the MPU; in response to updating the storage circuitry with the PID, configuring the MPU with region descriptors corresponding to the new process; configuring, by an operating system of the processor, the processor to execute the new process in parallel with the configuring the MPU with the region descriptors; and when the configuring the MPU is complete, executing the new process. |
| 地址 |
AUSTIN TX US |
