3.21 Per-CPU Allocation Fails when Loading kvm_intel Module with UEK R3

Per-CPU allocation fails when the kvm_intel module is loaded with UEK R3. Messages such as the following are logged:

kvm_intel: Could not allocate 48 bytes percpu data 
PERCPU: limit reached, disable warning 

There is no current workaround for UEK R3. (Bug ID 18459498)