[oi-dev] mapfile and RESERVE_SEGMENT or CAPABILITY

[Richard Lowe]

Ok yeah.  What seems to be happening is that we don't let you put a
mapping over the va hole (which I guess Oracle is smart about), and
obviously also don't let you put a mapping past userlimit.
So you'd need one segment that covers up as far as the va hole (which
is fine), and another bit that covers up from the end of the hole
until userlimit (which you can't do).  I'd guess Oracle did things
more thoroughly properly in their mapfile v2 changes.

Moving userlimit seems fine to me, I hope illumos does it (especially
if y'all already have).  We already (used to) set the limit that way
when running under xen.