The most recent commits in https://github.com/openstack/tripleo-quickstart
allow to use Fedora 25 Server (32 GB) as target VIRTHOST for TripleO
Quickstart HA Deployments and benefit from QEMU’s (2.7.1) && Libvirt’s (2.2.0)
the most recent KVM virtualization features coming with last Fedora release.
Prior to deployment on VIRTHOST install KSM and enable ksm.service :-
# dnf -y install python2-dnf ksm libselinux-python
# systemctl start ksm
# systemctl enable ksm
Complete text maybe seen here http://dbaxps.blogspot.com/2017/01/tripleo-quickstart-ha-deployment-on.html