RE: [plex86] Performance enhancement: elminiating mode and context

[John B�ckstrand]

> Well, can't we simply use the MMU to mark pages where MMIO can happen
> and then use the page fault to process them ? This way, we don't
> need to care about checking addresses. We only check them when a
> fault happens.


IIRC, thats very slow. an interrupt+processing per memory access
isnt very fast. btw, isnt it done like this today?

and didnt the dosemu guy talk about this? I think he said that
doing it by PG:ing was slow...