Maciej W. Rozycki writes: > How do you maintain coherency on such a system? To support such a model > all shared area write accesses should be followed by explicit > synchronization requests. It should be trivial but tedious to do for > Linux, but it might not be that easy for threads. This would have to be a loosely coupled system - something using either software coherency or uncached accesses for the shared areas. And then LL/SC for synchronization primitives. There are a fair number of SOC designs like this, even with more than two processors. /Hartvig
