uksm-3.14: merge test UKSM patch for 3.14 branch
uksm-3.15: fix merge conflict
uksm-3.15: use vmacache_invalidate()
uksm-3.15: fix possible __this_cpu_read() using in preemptible code
uksm-3.15: mark current UKSM version as 0.1.2.3
fix merge conflict
Merge branch 'uksm-3.16' into pf-3.16