Hi there,
I would imagine that, considering the performance we see with Blackshark even on powerful machines, virtualisation would provide poor results.
VMWorkstation and Virtualbox are very very good (they now have access to 3d graphics) however I would not consider running Blackshark within them as the performance would be mediocre at best.
Running various server type vm's on VMWorkstation/Virtualbox (not at the same time ) each has proved, on an e6600 8gb ram 3 x 750gb hdd's, to be adequate although definately slower than the physical versions. I can only guess that the extra power required to deal with the 3d graphics may be much more noticeable.
As for Linux......well I can only hope that DCS may, one day, port the series over to Linux. Running under Wine or Cedega may allow the game to be run reasonably however I would imagine nothing beats native support (and as mentioned would allow a complete move over to Linux).
Anyway that was my first post and what a good subject to post on - Blackshark and Linux - two of my favourite things!
Take it easy.
Si