NMI_REASON_IOCHK 15 arch/x86/include/asm/mach_traps.h #define NMI_REASON_MASK (NMI_REASON_SERR | NMI_REASON_IOCHK) NMI_REASON_IOCHK 370 arch/x86/kernel/nmi.c else if (reason & NMI_REASON_IOCHK) NMI_REASON_IOCHK 1107 arch/x86/xen/enlighten_pv.c reason |= NMI_REASON_IOCHK;