One point I want to emphasize (because discussion went some times
about guest driven devices): if a device uses busmastering and
writes into RAM directly, we have no chance to control access. 
Same with read, of course. We would have to virtualize busmastering
for each device at least, but as far as I know there is no standard
for that. This means, we need a driver stub for each device and thats
_a lot_ of work... Even if we are able to extract from Linux or
OSKit (licence problems?)...
So I see the chance for devices driven by guests only for simple
devices, but the interesting, new ones, for which that would be nice,
bring us headaches :(

jens


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