Implementing TLS: step 1
Julian Elischer
julian at elischer.org
Fri Jun 20 10:48:14 PDT 2003
On Fri, 20 Jun 2003, Igor Sysoev wrote:
> On Fri, 20 Jun 2003, Terry Lambert wrote:
>
> > Julian Elischer wrote:
> > > The big cost is that a processin x86 can only have a limited number of
> > > segments set up in teh Local descriptor table (LDT).
> > > I forget the actual number but i vaguely remember that it is 16383 or
> > > 8191 or something.
> >
> > 65536, but it includes the recursive mapping and the call trap, etc.,
> > so it's reall 65531.
>
> LDT can have 8192 descriptors.
> GDT can have 8191 usefull descriptors. The first descriptor is null one.
>
yes, that's what I remembered..
thanks
>
> Igor Sysoev
> http://sysoev.ru/en/
>
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