UefiCpuPkg/PiSmmCpuDxeSmm: Fix memory protection crash

[mirror_edk2.git] / UefiCpuPkg / PiSmmCpuDxeSmm / Ia32 / PageTbl.c

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/PageTbl.c b/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/PageTbl.c
index 32ce5958c59c364f6077bcc41078f052155ab121..e88b42d73343d7316b236cf582c4465a984d6461 100644 (file)
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/PageTbl.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/PageTbl.c
@@ -16,6 +16,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 \r
 #include "PiSmmCpuDxeSmm.h"\r
 \r
+UINT8                               mPhysicalAddressBits;\r
+\r
 /**\r
   Create PageTable for SMM use.\r
 \r
@@ -36,6 +38,8 @@ SmmInitPageTable (
   //\r
   InitializeSpinLock (mPFLock);\r
 \r
+  mPhysicalAddressBits = 32;\r
+\r
   if (FeaturePcdGet (PcdCpuSmmProfileEnable)) {\r
     //\r
     // Set own Page Fault entry instead of the default one, because SMM Profile\r