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SubjectRe: Pentium emulation
On Fri, 25 Jul 1997, Alan Cox wrote:

> > Couldn't the kernel provide emulation of the Pentium instructions
> > for the 386/486, to solve this problem? I guess it could be done
> > since it would be very similar to the FPU emulator.
> >
> > So the question is mainly: Would it make sense?
>
> Not really. Except for BSWAP the 386/486/586 user mode stuff is basically
> all down to how you order instructions and how you align them not to new
> instructions

I thought there was some problem with 386s not write faulting
correctly when you had kernel level privileges? Hence the 386/486
differences in verify_area.

Mike

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