Messages in this thread | | | Date | Fri, 30 Apr 1999 21:34:27 +0530 (IST) | From | Prasanna Gokhale <> | Subject | kernel virtual page locking.. |
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If I want to do a DMA operation in a character driver, i believe i have to use physical memory. ( by getting kvirt_to_phys() ). Is there a fear of this memory getting swapped out while the DMA operation is in progress.? If so, then there must be some mechanism of locking the pages in the driver. What are the utilities available for locking kernel virtual memory.?
- Prasanna
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