For those propeller heads who wants to know what a SLAT is, read on….

SLAT stands for “Second Level Address Translation”. SLAT is a new feature in today’s CPU on top of Virtualization support (Intel-V, AMD-V etc) to improve VM performance while reducing processing load on the hypervisor by removing the need for the hypervisor to maintain shadow page tables for each VM mapping virtual memory to physical memory.

So, ever thought about what happens when you move or migrate a VM from a host with SLAT support to another one without?

Answer is “Nothing”. You’ll obviously notice a slight performance degradation due to higher overhead on the receiving hosts’ hypervisor, but there won’t be any impact on its functionality.