Andi Kleen wrote:

quoted

The idea is _NOT_ that you go look for references to the paravirt_ops
members structure, that would be stupid and you wouldn't be able to
use the most efficient addressing mode on a given cpu, you'd be
patching up indirect calls and crap like that.  Just say no...
    

That wouldn't handle inlines though. At least some of the current
paravirtops like cli/sti are critical enough to require inlining.
  

You could special-case it in the thing handling the relocs; if you're
relocating to point to a function which you have an inline substitution,
then inline.

The bigger problem is that you don't know what registers you can
clobber.  For the pv_ops in hand-written asm, that a big pain.  The code
either has to assume the worst, or the "relocator" has to do something
more sophisticated (like look for push/pop pairs surrounding the call,
perhaps?).

    J