Howto fix the Spectre and Meltdown exploits

In prod, use bare metal servers which you completely control. Anytime there is a chance of someone running a VM on the same physical server as yourself, which is out of your control, the threat surface exists. Keep it simple, and ensure you have complete control of the bare metal server. AWS is in the process of providing bare metal options. And www.packet.net has already been doing this for quite some time.