nothing really. I wouldn't think he would have k 9 in that spot. I would have thought AA or set of Ks after he reraised. The only thing I might have done diff. is just flat call the turn and then decide what you want to do on the river.
The one piece of advice I would give you is if any of your bets or raises are more than half of your stack, just push your whole stack because more times than not, at that point, you're pot committed.