[Lightning] Re: Broken jump patching on x86_64

[Paolo Bonzini]

> Turns out that on MacOS the VM areas 
> for static vars and malloc do not have the execution bit set.

Does using mprotect work?

> 1) How can I _cleanly_ configure for that target ?

Probably, something like

  CC="gcc -arch x86_64" ./configure && make

> 3) What is the general state of the x86_64 port? What can I expect to 
> work / not work ?  What are the big changes I should be aware of ?

Large (>32-bit) immediates do not work for most instructions.  The rest 
should be ok.

Thanks,

Paolo