UefiCpuPkg PiSmmCpuDxeSmm: SMM profile and static paging mutual exclusion

[mirror_edk2.git] / UefiCpuPkg / UefiCpuPkg.dec

diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec
index d2965ba14c2dba0154db0fde032464527ea2f99e..6bac23ff52bcc89324fe22a7a8e48b46d3fc6405 100644 (file)
--- a/UefiCpuPkg/UefiCpuPkg.dec
+++ b/UefiCpuPkg/UefiCpuPkg.dec
@@ -84,6 +84,7 @@
 [PcdsFeatureFlag]\r
   ## Indicates if SMM Profile will be enabled.\r
   #  If enabled, instruction executions in and data accesses to memory outside of SMRAM will be logged.\r
+  #  It could not be enabled at the same time with SMM static page table feature (PcdCpuSmmStaticPageTable).\r
   #  This PCD is only for validation purpose. It should be set to false in production.<BR><BR>\r
   #   TRUE  - SMM Profile will be enabled.<BR>\r
   #   FALSE - SMM Profile will be disabled.<BR>\r
@@ -225,8 +226,11 @@
   gUefiCpuPkgTokenSpaceGuid.PcdCpuApTargetCstate|0|UINT8|0x00000007\r
 \r
   ## Indicates if SMM uses static page table.\r
-  #  If enabled, SMM will not use on-demand paging. SMM will build static page table for all memory.<BR><BR>\r
-  #  This flag only impacts X64 build, because SMM alway builds static page table for IA32.\r
+  #  If enabled, SMM will not use on-demand paging. SMM will build static page table for all memory.\r
+  #  This flag only impacts X64 build, because SMM always builds static page table for IA32.\r
+  #  It could not be enabled at the same time with SMM profile feature (PcdCpuSmmProfileEnable).\r
+  #  It could not be enabled also at the same time with heap guard feature for SMM\r
+  #  (PcdHeapGuardPropertyMask in MdeModulePkg).<BR><BR>\r
   #   TRUE  - SMM uses static page table for all memory.<BR>\r
   #   FALSE - SMM uses static page table for below 4G memory and use on-demand paging for above 4G memory.<BR>\r
   # @Prompt Use static page table for all memory in SMM.\r