SYSTEM AND METHOD OF IMPROVING TASK SWITCHING AND PAGE TRANSLATION PERFORMANCE UTILIZING A MULTILEVEL TRANSLATION LOOKASIDE BUFFER
A system and method of improved task switching in a data processing system. First, a first-level cache memory casts out an invalidated page table entry and an associated first page directory base address to a second-level cache memory. Then, the second-level cache memory determines if a task switch...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A system and method of improved task switching in a data processing system. First, a first-level cache memory casts out an invalidated page table entry and an associated first page directory base address to a second-level cache memory. Then, the second-level cache memory determines if a task switch has occurred. If a task switch has not occurred, first-level cache memory sends the invalidated page table entry to a current running task directory. If a task switch has occurred, first-level cache memory loads from the second-level cache directory a collection of page table entries related to a new task to enable improved task switching without requiring access to a page table stored in main memory to retrieve the collection of page table entries. |
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