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
uksm-3.16: adopt to 3.16 changes
fix merge conflict
uksm-3.17: replace hlist_add_after() with hlist_add_before()
uksm-3.17: export uksm_zero_pfn symbol
uksm-3.17: merge official UKSM beta for 3.17 kernel
Revert "uksm-3.17: merge official UKSM beta for 3.17 kernel"

This reverts commit d974071b31fa7dc26220a6b872149e56ff46b879.
uksm-3.17: remove stack_guard_page()
uksm-3.18: fix merge conflict
Merge branch 'uksm-3.18' into pf-3.18