Symbol: IST_INDEX_DF
arch/x86/kernel/cpu/common.c
2376
tss->x86_tss.ist[IST_INDEX_DF] = __this_cpu_ist_top_va(DF);
arch/x86/kernel/idt.c
103
ISTG(X86_TRAP_DF, asm_exc_double_fault, IST_INDEX_DF),