Hi Nick,

quoted

Good idea, I hadn't thought of embedding it all in a feature
section.  

It may not work currently because you get those ftr_alt_97 relocation
errors with the "else" parts because relative branches to other code
need to be direct and I think reachable from both places.

I thought about this a bit more. One potential issue will be
profiling - perf annotate will match the samples against the unpatched
code which could be very confusing.

Anton