MSI_DATA_TRIGGER_SHIFT   26 arch/x86/include/asm/msidef.h #define  MSI_DATA_TRIGGER_EDGE		(0 << MSI_DATA_TRIGGER_SHIFT)
MSI_DATA_TRIGGER_SHIFT   27 arch/x86/include/asm/msidef.h #define  MSI_DATA_TRIGGER_LEVEL		(1 << MSI_DATA_TRIGGER_SHIFT)