IntelSiliconPkg VTdDxe: Option to force no early access attr request

[mirror_edk2.git] / IntelSiliconPkg / IntelSiliconPkg.dec

diff --git a/IntelSiliconPkg/IntelSiliconPkg.dec b/IntelSiliconPkg/IntelSiliconPkg.dec
index c0cf58fa6cb59a56adae061001d3c9618f7f5f45..2f5bef6089f9baafa87153967f1429bd3e8eb48c 100644 (file)
--- a/IntelSiliconPkg/IntelSiliconPkg.dec
+++ b/IntelSiliconPkg/IntelSiliconPkg.dec
@@ -58,6 +58,7 @@
   ## The mask is used to control VTd behavior.<BR><BR>\r
   #  BIT0: Enable IOMMU during boot (If DMAR table is installed in DXE. If VTD_INFO_PPI is installed in PEI.)\r
   #  BIT1: Enable IOMMU when transfer control to OS (ExitBootService in normal boot. EndOfPEI in S3)\r
+  #  BIT2: Force no IOMMU access attribute request recording before DMAR table is installed.\r
   # @Prompt The policy for VTd driver behavior.\r
   gIntelSiliconPkgTokenSpaceGuid.PcdVTdPolicyPropertyMask|1|UINT8|0x00000002\r
 \r