EFER is constant in the host and writing it once during setup means
we can skip writing the host value in add_atomic_switch_msr_special().
Signed-off-by: NSean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: NJim Mattson <jmattson@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>