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SubjectRe: [RFC][PATCH] x86: make text_poke() atomic
> 
> Use map_vm_area() instead of vmap() in text_poke() for avoiding page
> allocation and delayed unmapping, and call vunmap_page_range() and
> local_flush_tlb() directly because this mapping is temporary and
> local.
>
> At the result of above change, text_poke() becomes atomic and can be
> called from stop_machine() etc.

.... but text_poke() realistically needs to call stop_machine() since
you can't poke live code.... so that makes me wonder how useful this
is...

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