Since manually upgrading from source (cvsup) is deprecated and the recommendation is to use freebsd-update:
What's the best way to upgrade (e.g. 9.1 to 9.2) while keeping a non-generic (XENHVM) kernel?
I'm presently using a mix between freebsd-update and manually installing from .../9.2-RELEASE/src.txz but I would like to know if anyone else as a better/faster/cleaner/easier way of doing it.