> I don't know.  A quick grep of the sources I have on my laptop show an
> external declaration in the MD version of pmap.h for amd64 but I
> cannot see where it gets used.  I took the least risk option (to me)
> of renaming the variables in the functions because I could see and
> understand the scoping.
> 
> I will try removing the extern definition from pmap.h tonight and see
> what breaks.

what was the result?

can you back out the relevant part of the change if it was unnecessary?

YAMAMOTO Takashi