IntelSiliconPkg/IntelVtd: Consume VTd policy PCD

Cc: Star Zeng <star.zeng@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jiewen Yao <jiewen.yao@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>
2017-09-04 09:50:25 +08:00
parent 0d12b73306
commit c50596a701
3 changed files with 12 additions and 2 deletions
--- a/IntelSiliconPkg/IntelVTdDxe/DmaProtection.c
+++ b/IntelSiliconPkg/IntelVTdDxe/DmaProtection.c
@@ -437,8 +437,11 @@ OnExitBootServices (
 {
  DEBUG ((DEBUG_INFO, "Vtd OnExitBootServices\n"));
  DumpVtdRegsAll ();
-  DisableDmar ();
-  DumpVtdRegsAll ();
+
+  if ((PcdGet8(PcdVTdPolicyPropertyMask) & BIT1) == 0) {
+    DisableDmar ();
+    DumpVtdRegsAll ();
+  }
 }

 /**