+#define IOAPIC_LVT_POLARITY (1 << IOAPIC_LVT_POLARITY_SHIFT)
+#define IOAPIC_LVT_DELIV_STATUS (1 << IOAPIC_LVT_DELIV_STATUS_SHIFT)
+#define IOAPIC_LVT_DEST_MODE (1 << IOAPIC_LVT_DEST_MODE_SHIFT)
+#define IOAPIC_LVT_DELIV_MODE (7 << IOAPIC_LVT_DELIV_MODE_SHIFT)