Which Luna tokens are burned if the supply rises above 1 billion?

p. 6 of White paper states “As Luna is minted to match Terra offers, volatility is moved from Terra price to Luna supply. If unmitigated, this Luna dilution presents a problem for miners; their Luna stakes are worth a smaller portion of total available mining power post-contraction. The system burns a portion of the Luna it has earned during expansions until Luna supply has reached its 1 billion equilibrium issuance.”

Is this stating that the community fund will be used to keep the Luna supply at 1 billion or below? If so, what happens if we rise above 1 billion having burnt the entire community fund to bootstrap ozone? Will part of the stability reserve be burned to ensure this? Or, will the supply simply continue above 1 billion until a future expansion occurs?