Merge branch into tip/master: 'x86/cpu'

 # New commits in x86/cpu:
    5bfa0e45e9e7 ("x86/cpu/intel_epb: Don't rely on link order")
    04c3024560d3 ("x86/barrier: Do not serialize MSR accesses on AMD")

Signed-off-by: Ingo Molnar <mingo@kernel.org>