Kernel development environment

["Stephen Roberts" <sroberts82k@xxxxxxxxxxxxxx>]

Hi guys,
I'm interested to hear about your development environments. Do you use a seperate PC to your development one for to use for testing your kernel? Or is the work you are doing high enough level to be stable enough to run your new kernel on your development machine? My main interest is turnaround time - ie. from compiling my kernel to seeing your debug out over serial or in a logfile - to minimise this. 
Thanks,
Stephen