That is a really nasty problem.  You need a synchronization primitive 
which guarantees a flat stack, so you can't do it in the interrupt 
handler as I have tried to do.  I'll bang my head on it awhile.  In the 
meantime, were there ever any solutions to the syscall patching problem 
that might lend me a clue as to what to do (or not to do, or impossible?).

yes we just disallowed it :)


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