* ron minnich rminnich@lanl.gov [040322 18:30]:
It refers to the Hypertransport Links, Down (LDT0), Across (LDT1), UP (LDT2).
I think I picked these names, and if I did I will take the blame: they are hard to remember.
These names are also spread across several pieces of AMD64 and Hypertransport documentation, since it illustrates hypertransport graphs of different wiring quite nice. Still, it's unclear from a technical point of view.
Should we bite the bullet and change the names? ldt0, ldt1, ldt2?
Should not be too hard, since we are not really using them heavily. I still have some defines used in coherent_ht.c which should go away and replaced by something more sophisticated.
Stefan