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-rw-r--r--hw/i386/intel_iommu_internal.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
index d084099ed9..00e9edbc66 100644
--- a/hw/i386/intel_iommu_internal.h
+++ b/hw/i386/intel_iommu_internal.h
@@ -203,6 +203,9 @@
#define VTD_CAP_MAMV (VTD_MAMV << 48)
#define VTD_CAP_PSI (1ULL << 39)
#define VTD_CAP_SLLPS ((1ULL << 34) | (1ULL << 35))
+#define VTD_CAP_DRAIN_WRITE (1ULL << 54)
+#define VTD_CAP_DRAIN_READ (1ULL << 55)
+#define VTD_CAP_DRAIN (VTD_CAP_DRAIN_READ | VTD_CAP_DRAIN_WRITE)
#define VTD_CAP_CM (1ULL << 7)
/* Supported Adjusted Guest Address Widths */