Merge tag 'x86-timers-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git...

Pull x86 timer update from Ingo Molnar:
 "Set the X86_FEATURE_TSC_KNOWN_FREQ flag for Xen guests, to avoid
  recalibration"

* tag 'x86-timers-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/xen/time: Set the X86_FEATURE_TSC_KNOWN_FREQ flag in xen_tsc_khz()