Messages in this thread |  | | | Subject | Re: [RFC] [PATCH 0/3] ioat: DMA engine support | | From | Roland Dreier <> | | Date | Thu, 08 Dec 2005 14:23:40 -0800 |
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Kumar> I'm actually searching for any examples of drivers that Kumar> deal with the issues related to DMA'ng directly two and Kumar> from user space memory.
It's not quite the same story as what you're doing with DMA engines inside the CPU, but you could look at drivers/infiniband, particularly drivers/infiniband/core/uverbs_mem.c. That handles pinning and getting DMA addresses for user memory that will be used as a DMA target in the future.
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