9d349d47f0e3 ("x86/smpboot: Make TSC synchronization function call based")
2b3be65d2e4f ("x86/smpboot: Split up native_cpu_up() into separate phases and document them")
c7f15dd3f0e9 ("x86/smpboot: Remove unnecessary barrier()")
5475abbde77f ("x86/smpboot: Remove the CPU0 hotplug kludge")
134a12827bc5 ("x86/smpboot: Avoid pointless delay calibration if TSC is synchronized")