IST_INDEX_NMI    1906 arch/x86/kernel/cpu/common.c 		t->x86_tss.ist[IST_INDEX_NMI] = __this_cpu_ist_top_va(NMI);
IST_INDEX_NMI     186 arch/x86/kernel/idt.c 	ISTG(X86_TRAP_NMI,	nmi,		IST_INDEX_NMI),