Are there any performance limitations when running a VM of a Boot Camp installation?
As I use it on regular basis I can say it's good performance of using Bootcamp installed windows via VMWare Fusion 3.

Here is process I followed.


Make a bootcamp partition using Bootcamp Assistant for the space.
Install the Windows XP version.
Open the VMware and select the bootcamp partition, when you create a new virtual machine for Windows.
VMWare installs few utilities on the bootcamp partition, to use it to boot via Fusion.
Once all this is done, you can launch this windows version like a normal virtual machine in Fusion.


If I want a lite usage of windows I will boot via Fusion, if I want to run heavy programs then I will boot into Bootcamp, but I rarely does it, as Fusion VM is 99% OK for me for all activities including development with Eclipse.