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From: Jiewen Yao <jiewen.yao@intel.com>
To: edk2-devel@lists.01.org
Cc: Jeff Fan <jeff.fan@intel.com>, Feng Tian <feng.tian@intel.com>,
 Star Zeng <star.zeng@intel.com>,
 Michael D Kinney <michael.d.kinney@intel.com>,
 Laszlo Ersek <lersek@redhat.com>
Date: Thu,  3 Nov 2016 14:53:46 +0800
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Subject: [PATCH 4/6] UefiCpuPkg/dec: Add PcdCpuSmmStaticPageTable.
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If enabled, SMM will not use on-demand paging.
SMM will build static page table for all memory.

Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
---
 UefiCpuPkg/UefiCpuPkg.dec | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec
index 8674533..a110820 100644
--- a/UefiCpuPkg/UefiCpuPkg.dec
+++ b/UefiCpuPkg/UefiCpuPkg.dec
@@ -199,6 +199,14 @@
   # @Prompt The specified AP target C-state for Mwait.
   gUefiCpuPkgTokenSpaceGuid.PcdCpuApTargetCstate|0|UINT8|0x00000007
 
+  ## Indicates if SMM uses static page table.
+  #  If enabled, SMM will not use on-demand paging. SMM will build static page table for all memory.<BR><BR>
+  #  This flag only impacts X64 build, because SMM alway builds static page table for IA32.
+  #   TRUE  - SMM uses static page table for all memory.<BR>
+  #   FALSE - SMM uses static page table for below 4G memory and use on-demand paging for above 4G memory.<BR>
+  # @Prompt Use static page table for all memory in SMM.
+  gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmStaticPageTable|TRUE|BOOLEAN|0x3213210D
+
 [PcdsDynamic, PcdsDynamicEx]
   ## Contains the pointer to a CPU S3 data buffer of structure ACPI_CPU_DATA.
   # @Prompt The pointer to a CPU S3 data buffer.
-- 
2.7.4.windows.1