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Re: Just my 2 penny worth..
On Wed, Jun 24, 1998 at 08:01:26PM +0100, Petr Stehlik wrote:
> Is "DMA" Direct Memory Access? If yes, I can't see how would you start
> copying pages from virtual to real memory when DMA occurs. It sounds
> like 68060 would not be fast enough for this kind of 'experiment'.
The kernel *does* know when a DMA operation starts - it would have to
virtualize all hardware accesses (just like Win95 does :-)) - then it could
copy the DMA data to a contiguous block and lock that one *before* starting
the DMA transfer.
However, this looks like too much effort to me, providing little benefits.
cu
Michael
--
Michael Schwingen, Ahornstrasse 36, 52074 Aachen