diff --git a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgDxe.c b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgDxe.c
index f5787cd24d..6a810928a0 100644
--- a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgDxe.c
+++ b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgDxe.c
@@ -19,6 +19,7 @@
 #include <Library/DebugLib.h>
 #include <Library/QemuFwCfgLib.h>
 #include <Library/UefiBootServicesTableLib.h>
+#include <Library/MemEncryptTdxLib.h>
 #include <Library/MemEncryptSevLib.h>
 
 #include "QemuFwCfgLibInternal.h"
@@ -85,7 +86,7 @@ QemuFwCfgInitialize (
     DEBUG ((DEBUG_INFO, "QemuFwCfg interface (DMA) is supported.\n"));
   }
 
-  if (mQemuFwCfgDmaSupported && MemEncryptSevIsEnabled ()) {
+  if (mQemuFwCfgDmaSupported && (MemEncryptSevIsEnabled () || (MemEncryptTdxIsEnabled ()))) {
     EFI_STATUS  Status;
 
     //
@@ -100,7 +101,7 @@ QemuFwCfgInitialize (
     if (EFI_ERROR (Status)) {
       DEBUG ((
         DEBUG_ERROR,
-        "QemuFwCfgSevDma %a:%a Failed to locate IOMMU protocol.\n",
+        "QemuFwCfgDma %a:%a Failed to locate IOMMU protocol.\n",
         gEfiCallerBaseName,
         __FUNCTION__
         ));
@@ -411,10 +412,10 @@ InternalQemuFwCfgDmaBytes (
   DataBuffer    = Buffer;
 
   //
-  // When SEV is enabled, map Buffer to DMA address before issuing the DMA
+  // When SEV or TDX is enabled, map Buffer to DMA address before issuing the DMA
   // request
   //
-  if (MemEncryptSevIsEnabled ()) {
+  if (MemEncryptSevIsEnabled () || MemEncryptTdxIsEnabled ()) {
     VOID                  *AccessBuffer;
     EFI_PHYSICAL_ADDRESS  DataBufferAddress;
 
diff --git a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgDxeLib.inf b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgDxeLib.inf
index 48899ff123..ce3eaa5ed8 100644
--- a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgDxeLib.inf
+++ b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgDxeLib.inf
@@ -43,6 +43,7 @@
   IoLib
   MemoryAllocationLib
   MemEncryptSevLib
+  MemEncryptTdxLib
 
 [Protocols]
   gEdkiiIoMmuProtocolGuid                         ## SOMETIMES_CONSUMES