US Patent 7912998 DMA access systems and methods
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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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Patent Inventor Names
Erwin Oertli0
Jean-Francois Collard0
Michael Steven Schlansker0
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US Patent 07912998 DMA access systems and methods US Patent 7912998 DMA access systems and methods
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Patent Number
079129980
Patent Number
79129980
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Patent Jurisdiction
Patent Number
079129980
Date of Patent
March 22, 2011
0Patent Application Number
113269180
Date Filed
January 6, 2006
0Official Website
Patent Primary Examiner
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US Patent 07912998 DMA access systems and methods
Infobox
Is a
Patent jurisdiction
Patent number
07912998
Date of patent
March 22, 2011
Patent application number
11326918
Date Filed
January 6, 2006
Patent primary examiner
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