X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=IntelSiliconPkg%2FIntelVTdDxe%2FDmaProtection.c;h=f5de01f3806cc35a87cac2311049c77b00272a75;hp=82ed4d2df28504f2c243db495d565793b26d589a;hb=c50596a701435b62dc7e9c12b49201a17c38e17c;hpb=0d12b733060930df03fca00ae1228b565481a3aa

diff --git a/IntelSiliconPkg/IntelVTdDxe/DmaProtection.c b/IntelSiliconPkg/IntelVTdDxe/DmaProtection.c
index 82ed4d2df2..f5de01f380 100644
--- 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 ();
+  }
 }
 
 /**