Merge tag 'x86_urgent_for_v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git...

Merge tag 'x86_urgent_for_v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Borislav Petkov:

 - Add a proper kernel cmdline option to control the TLB invalidation
   method on x86 prompted mainly by a recent finding on AMD related to
   INVLPGB/TYLBSYNC invalidations.

   Having the command line option is simply another way to alleviate
   the situation short-term

* tag 'x86_urgent_for_v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/CPU: Add a tlbi= cmdline switch