FreeBSD 10.0 release is the first release which has native paravirtualized drivers and Hyper-V Integration Services built in the amd64 kernel. In previous releases additional software had to be installed to be able to run FreeBSD on Hyper-V.
Mind these are part of the amd64 GENERIC kernel. For i386 some manual steps needs to be taken.
For instructions see the FreeBSD Wiki page The info below was copied from the Wiki page.
As of FreeBSD 10.0, Hyper-V integration services provide the following functionality:
- Support for integrated shutdown from Hyper-V console.
- Support for keeping time synchronized between FreeBSD guest and Hyper-V host.
- Support for Hyper-V specific IDE and SCSI storage devices.
- Support for Hyper-V specific network adapter.
- Live migration with and without static IP migration. Note that to enable static IP migration, administrators will need to include the KVP driver and daemon available in FreeBSD 10.0 ports for Hyper-V