CPU_UCODE_ALL_CPUS
data.cpu_nr = CPU_UCODE_ALL_CPUS;
if (data->cpu_nr != CPU_UCODE_ALL_CPUS)
|| cpuno != CPU_UCODE_ALL_CPUS)
uc->cpu_nr = CPU_UCODE_ALL_CPUS;
uc->cpu_nr = CPU_UCODE_ALL_CPUS; /* for Xen */