METHODS AND APPARATUS FOR ACCESS CONTROL IN SHARED VIRTUAL MEMORY CONFIGURATIONS
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United States of America Patent
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Issued Date -
Jan 25, 2018
app pub date -
Jul 22, 2016
filing date -
Jul 22, 2016
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Disclosed are methods and apparatus for memory management in shared virtual memory (SVM) systems. The methods and apparatus provide SVM access control on a per master basis through the assignment of a first classification identifier (ID) upon reception of a memory access request from a memory master. The assigned first classification ID assigned to the memory request is compared with a second classification ID stored in at least one page table entry of a page table used to manage the SVM system. The page table entry (PTE) corresponds to one or more memory locations of the SVM being requested in the memory access request. SVM system access operations for the memory access request are then denied if the first classification ID does not match the second classification ID, thereby providing added per master access control for the SVM system.
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