When should we set TSS register ?

[raywill]

When should we set TSS register ?
In real mode or after switched to pmode?
And why?

[Pype.Clicker]

since loading "TR" register will lookup the GDT, i would suggest you load it in protected mode once the final GDT has been set up and before any attempt to use hardware task switching _or_ priviledge level switching.

[raywill]

Thanks