On 09/16/2014 11:18 AM, Alex Bennée wrote: > Do this mean when all this unwinding has occured cc->do_interrupt will > no longer be needed at all entries will go in via > $ARCH_cpu_exec_interrupt?
No. Don't forget the call to do_interrupt in the block immediately following the sigsetjmp. And even ignoring that, some targets (like arm) have several different settings for do_interrupt, while they share a cpu_exec_interrupt hook. r~