Re: Just my 2 penny worth..

[Michael Schwingen <rincewind@tubul.dascon.de>]

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