I am assuming that DMA is used transfer data into and out of mic devices if the transfer is asynchronous. If that is correct, the memory needs to be pinned before the transfer. What protocol is used for pinning and unpinning memory?
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I am assuming that DMA is used transfer data into and out of mic devices if the transfer is asynchronous. If that is correct, the memory needs to be pinned before the transfer. What protocol is used for pinning and unpinning memory?