BUS_MCEERR_AO
WARN_ON((code != BUS_MCEERR_AO) && (code != BUS_MCEERR_AR));
WARN_ON((code != BUS_MCEERR_AO) && (code != BUS_MCEERR_AR));
(si_code >= BUS_MCEERR_AR) && (si_code <= BUS_MCEERR_AO))
ret = send_sig_mceerr(BUS_MCEERR_AO, (void __user *)tk->addr,