| 摘要 |
A data processing system comprises a memory, a memory protection unit, and one or more IP units connected to the memory via the memory protection unit. The memory protection unit is arranged to logically partition the memory into different regions, to maintain a policy for each region, the policy defining access rights to the respective region and defining the safety status of data written in the respective region, to check access requests writing data from a first region to a second region, and to refuse the access request if the safety status, according to the respective policy, of the written data in the second region is not maintained.
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