IST_INDEX_DB     1907 arch/x86/kernel/cpu/common.c 		t->x86_tss.ist[IST_INDEX_DB] = __this_cpu_ist_top_va(DB);
IST_INDEX_DB      185 arch/x86/kernel/idt.c 	ISTG(X86_TRAP_DB,	debug,		IST_INDEX_DB),