diff --git a/IntelSiliconPkg/Include/Ppi/VtdInfo.h b/IntelSiliconPkg/Include/Ppi/VtdInfo.h
index e8be63f3b6..cf85d18981 100644
--- a/IntelSiliconPkg/Include/Ppi/VtdInfo.h
+++ b/IntelSiliconPkg/Include/Ppi/VtdInfo.h
@@ -17,22 +17,25 @@
 #ifndef __VTD_INFO_PPI_H__
 #define __VTD_INFO_PPI_H__
 
+#include <IndustryStandard/DmaRemappingReportingTable.h>
+
 #define EDKII_VTD_INFO_PPI_GUID \
     { \
       0x8a59fcb3, 0xf191, 0x400c, { 0x97, 0x67, 0x67, 0xaf, 0x2b, 0x25, 0x68, 0x4a } \
     }
 
-typedef struct _EDKII_VTD_INFO_PPI  EDKII_VTD_INFO_PPI;
-
-#define EDKII_VTD_INFO_PPI_REVISION 0x00010000
-
-struct _EDKII_VTD_INFO_PPI {
-  UINT64                                  Revision;
-  UINT8                                   HostAddressWidth;
-  UINT8                                   Reserved[3];
-  UINT32                                  VTdEngineCount;
-  UINT64                                  VTdEngineAddress[1];
-};
+//
+// VTD info PPI just use same data structure as DMAR table.
+//
+// The reported information must include what is needed in PEI phase, e.g.
+//   the VTd engine (such as DRHD)
+//   the reserved DMA address in PEI for eary graphic (such as RMRR for graphic UMA)
+//
+// The reported information can be and might be a subset of full DMAR table, e.g.
+//   if some data is not avaiable (such as ANDD),
+//   if some data is not needed (such as RMRR for legacy USB).
+//
+typedef EFI_ACPI_DMAR_HEADER EDKII_VTD_INFO_PPI;
 
 extern EFI_GUID gEdkiiVTdInfoPpiGuid;