> Is this the document? > > http://people.redhat.com/drepper/tls.pdf > > It does seem to have quite a bit of technical detail. I'll look at it > in more depth a little later. Thank you for the pointer. >From my quick reading, we might have to sacrifice another register. Does this require any special handling at the kernel level? I'd look at the 386 implementation (SH seems a bit simpler but I do know squat about SH - anyone?) Michael