Is the VIA C7 cpu fully supported yet?
According to http://www.openbsd.org/i386.html#hardware , only the VIA C3 is supported. According to http://www.openbsd.org/40.html#new , Improved speed control on some systems:* New SpeedStep detection code, also adds support for VIA C7-M, and several newer Pentium M's.
That seems to be the only change related to the C7 I can find. The padlock feature designed to speed up crypto looks useful.