On Mon, Dec 18, 2000 at 01:35:58PM +0100, John B�ckstrand wrote:
> > 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...
Well, it has the big advantage that you can simply run the code
unmodified until it crashes. When it crashes, you know that you
must do something and you can then start to dismantle and examine
it.
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