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RE: Rep:Re: Rep:Re: [f-cpu] TLB right + resume
> > > >>> What you think about the idea of tagged page that could
> > > only be used by tagged read&write instructions (to protect data page of
> > > the kernel and return stack write) ?
> > I'm afraid that will help only if you compile all your
> > binaries yourself (otherwise, they might contain "trojan writes").
> Surely it would be a simple matter in software to search through
> executables looking for the op-codes of illegal instructions before
> execution?
In that case you will loose less time by enabling a trap handler on this
particular instructions and waiting to trap, than to always scan the binary.
But currently in the F-CPU only one instruction need this : PUT, and perhaps
GET.
Cedric
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