Question on KVM

[prozacgod]

I've not been able to figure out an answer to this, but how many KVM instances can you make on a host machine, is there some limit? Is there a Kernel limit in Linux, or a hardware limit?

Obviously ram would be a limiting factor, but say I want to have 32gb of ram allocated to as many VM's as a 2MB memory limit would allow, is that possible? That would be 16k of VM instances, is that actually doable?