EXC_MCHK
ksi->ksi_trap = EXC_MCHK;
{ EXC_MCHK, mchktrap, (uintptr_t)&mchksize },
{ EXC_MCHK, criticaltrap, (uintptr_t)&criticalsize },
mtspr(SPR_IVOR1, EXC_MCHK); /* machine check */
case EXC_MCHK:
case EXC_MCHK: trapstr = "MCHK"; break;
case EXC_MCHK: /* Machine check */
case EXC_MCHK|EXC_USER:
ksi.ksi_trap = EXC_MCHK;
case EXC_MCHK: {