> On Tue, 17 Dec 2002, Richard B. Johnson wrote:
> >
> > You can call intersegment with a full pointer. I don't know how
> > expensive that is.
>
> It's so expensive as to not be worth it, it's cheaper to load a register
> or something, i eyou can do
>
> pushl $0xfffff000
> call *(%esp)
>
> faster than doing a far call.
Hmm ...
How expensive would it be to have a special virtual DSO built into ld.so
which exported this (and any other future entry points), to be linked
against like any other DSO? That way, the *actual* interface would only be
between the kernel and ld.so.
MfG Kai
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