Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable
From: Andi Kleen
Date: Tue Mar 20 2007 - 15:28:39 EST
> 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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