Comment by elipsey

Good point, but not ideal for everyone. Especially with IOMMU and an SSD, performance isn't so bad when it works. I haven't liked the overhead with this in the past though, plus no full disk encryption, (although I guess you could do it in the guest), and Windows security in general, and bad 3D drivers for the guest (compositing please), and anything that wants low level hardware access is out. So if you don't actually want to _use_ Windows it makes a pretty crummy hardware abstraction layer.