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-rw-r--r--drivers/iommu/intel-pasid.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/intel-pasid.h b/drivers/iommu/intel-pasid.h
index d6f4fead4491..55bb8715329d 100644
--- a/drivers/iommu/intel-pasid.h
+++ b/drivers/iommu/intel-pasid.h
@@ -17,6 +17,7 @@
#define PASID_PTE_PRESENT 1
#define PDE_PFN_MASK PAGE_MASK
#define PASID_PDE_SHIFT 6
+#define MAX_NR_PASID_BITS 20
/*
* Domain ID reserved for pasid entries programmed for first-level