asid_cpu
if (!((asid_mm(mm, cpu) ^ asid_cpu(cpu)) & MM_CTXT_CYCLE_MASK))
if (unlikely(!(++asid_cpu(cpu) & MM_CTXT_ASID_MASK))) {
if (!asid_cpu(cpu))
asid_cpu(cpu) = MM_CTXT_FIRST_CYCLE;
asid_mm(mm, cpu) = asid_cpu(cpu);