Comment 2 for bug 496676

This may be a non-issue...it does appear that qemu-system-x86_64 is utilizing the kvm kernel modules without the -enable-kvm flag.
Prior to starting the VM:
lsmod |grep kvm
kvm_intel 43816 0
kvm 162688 1 kvm_intel

After starting the VM:
lsmod |grep kvm
kvm_intel 43816 3
kvm 162688 1 kvm_intel