RE: Calculating kernel logical address ..

Kurt Ferreira
2002-09-09T18:12:53Z

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