发明名称 |
MEMORY PROTECTION IN A DATA PROCESSING SYSTEM |
摘要 |
A system and method are disclosed for determining whether to allow or deny an access request based upon one or more descriptors at a local memory protection unit and based upon one or more descriptors a system memory protection unit. When multiple descriptors of a memory protection unit apply to a particular request, the least-restrictive descriptor will be selected. System access information is stored at a cache of a local core in response to a cache line being filled. The cached system access information is merged with local access information, wherein the most-restrictive access is selected.
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申请公布号 |
US2012215989(A1) |
申请公布日期 |
2012.08.23 |
申请号 |
US201113033317 |
申请日期 |
2011.02.23 |
申请人 |
MOYER WILLIAM C.;CIRCELLO JOSEPH C.;FREESCALE SEMICONDUCTOR, INC. |
发明人 |
MOYER WILLIAM C.;CIRCELLO JOSEPH C. |
分类号 |
G06F12/14 |
主分类号 |
G06F12/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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