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SubjectRe: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable
> But I was throwing that out as a long-term thing. I'm not claiming it's 
> trivial, but it should be doable.

One thing I was pondering was to replace the expensive popfs with

bt $IF,(%rsp)
jnc 1f
sti
1:

But would be mostly a P4 optimization again and I'm not 100% sure it is
worth it.

-Andi

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