Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jean-Francois Collard0
Michael Steven Schlansker0
Erwin Oertli0
Date of Patent
March 22, 2011
0Patent Application Number
113269180
Date Filed
January 6, 2006
0Patent Primary Examiner
Patent abstract
Methods and systems for performing direct memory access (DMA) transfers are described. An invalidate queue (or other storage device) contains an entry associated with a DMA transfer in progress. If the invalidate queue detects an invalidation of a memory page associated with that entry, then it is marked invalid. If the entry is marked invalid during the DMA transfer, then that DMA transfer is aborted. This enables, among other things, DMA transfers to unpinned virtual memory.
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