Honestly, what is wrong with this trivial patch?
I've not *tested* it, but it looks really really simple to me. Take it
as a "something like this" rather than anything else.
And yes, it would be better if bpf_jit_binary_pack_free did it too, so
that you don't have random old JIT'ed code lying around (and possibly
still in CPU branch history caches or whatever).
And it would be lovely if the exception table entries would be part of
another allocation and not marked executable.
But I certainly don't see the _downside_ (or complexity) of just doing
this, instead of zeroing things.
So this is by no means perfect, but it seems at least incrementally
_better_ than just zeroing. No?
Linus
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