> we already use the gs register for SMP now..
> what about the fs register?
> I vaguely remember that the different segments could be used to achieve
> this (%fs points to user space or something)
... as I've suggested a few days ago, and was told to shut up with a (rather
irrelevant) refere
> Why not put the kernel in a different address space? IIRC there's no
> absolute requirement for the kernel and userland to be in the same
> address space, and that way we would have 4 GB for each.
Wouldn't that make system calls that need to share data between kernel
and user spaces hopeless
