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-rw-r--r--hw/i386/intel_iommu_internal.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
index 2a9987fbc4..e1a08cb496 100644
--- a/hw/i386/intel_iommu_internal.h
+++ b/hw/i386/intel_iommu_internal.h
@@ -110,6 +110,8 @@
/* Interrupt Address Range */
#define VTD_INTERRUPT_ADDR_FIRST 0xfee00000ULL
#define VTD_INTERRUPT_ADDR_LAST 0xfeefffffULL
+#define VTD_INTERRUPT_ADDR_SIZE (VTD_INTERRUPT_ADDR_LAST - \
+ VTD_INTERRUPT_ADDR_FIRST + 1)
/* The shift of source_id in the key of IOTLB hash table */
#define VTD_IOTLB_SID_SHIFT 36