So I have a KVM machine, where I run an Ubuntu 12.04 (server edition).I want to compile a minimalistic kernel for the KVM guest, but I only found the howto for hosts, and guests with paravirtualization.  I want to compile a kernel for a guest. Nothing more. With only the things it needs.
How to compile kernel for KVM guest (without paravirtualization)?
configuration;linux kernel;kvm;virtualization
If you don't care about paravirtualization, then compiling a minimalistic kernel for a KVM guest is the same as compiling a minimalistic kernel for hardware.  There is lots of documentation available on the latter topic:https://www.google.com/search?q=linux+build+minimal+kernel