Messages in this thread | | | Date | Mon, 9 Sep 2002 12:16:28 -0600 (MDT) | From | Kurt Ferreira <> | Subject | RE: Calculating kernel logical address .. |
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On Mon, 9 Sep 2002, Richard B. Johnson wrote:
> Well I just read Documentation/DMA-mapping.txt as advised by David > and it seems as though it will no longer be possible to do what > many programmers have been wanting to do, to wit: > > (1) In user-code, allocate a buffer. > (2) Lock that buffer into memory. > (3) Call some driver that DMAs data to/from that buffer. > Hmm. IIRC (big if) did not kiobufs allow something similar to this. It has been long since I have looked though.
Kurt
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