SEP and Hyper-V server

We have a few Hyper-V 2012 R2 and Hyper-V 2008 R2 servers on which I have previously installed SEP 12.1 and they appear to run with no problems.  My concern is that I have recently been advised that SEP 12.1 will not run on Windows Hyper-V server so I wondered if anyone can give me more advice as to whether this is true or not with the most recent versions of SEP?