ISTG              185 arch/x86/kernel/idt.c 	ISTG(X86_TRAP_DB,	debug,		IST_INDEX_DB),
ISTG              186 arch/x86/kernel/idt.c 	ISTG(X86_TRAP_NMI,	nmi,		IST_INDEX_NMI),
ISTG              187 arch/x86/kernel/idt.c 	ISTG(X86_TRAP_DF,	double_fault,	IST_INDEX_DF),
ISTG              189 arch/x86/kernel/idt.c 	ISTG(X86_TRAP_MC,	&machine_check,	IST_INDEX_MCE),