UefiCpuPkg/PiSmmCpuDxeSmm: Remove MTRRs from PSD structure

https://bugzilla.tianocore.org/show_bug.cgi?id=277

All CPUs use the same MTRR settings.  Move MTRR settings
from a field in the PROCESSOR_SMM_DESCRIPTOR structure into
a module global variable.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>

1 files changed, 4 insertions, 14 deletions

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
index a873b68c30..01ddaee4e7 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
@@ -17,7 +17,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 //

 // Slots for all MTRR( FIXED MTRR + VARIABLE MTRR + MTRR_LIB_IA32_MTRR_DEF_TYPE)

 //

-UINT64                                      gSmiMtrrs[MTRR_NUMBER_OF_FIXED_MTRR + 2 * MTRR_NUMBER_OF_VARIABLE_MTRR + 1];

+MTRR_SETTINGS                               gSmiMtrrs;

 UINT64                                      gPhyMask;

 SMM_DISPATCHER_MP_SYNC_DATA                 *mSmmMpSyncData = NULL;

 UINTN                                       mSmmMpSyncDataSize;

@@ -283,20 +283,12 @@ ReplaceOSMtrrs (
   IN      UINTN                     CpuIndex

   )

 {

-  PROCESSOR_SMM_DESCRIPTOR       *Psd;

-  UINT64                         *SmiMtrrs;

-  MTRR_SETTINGS                  *BiosMtrr;

-

-  Psd = (PROCESSOR_SMM_DESCRIPTOR*)(mCpuHotPlugData.SmBase[CpuIndex] + SMM_PSD_OFFSET);

-  SmiMtrrs = (UINT64*)(UINTN)Psd->MtrrBaseMaskPtr;

-

   SmmCpuFeaturesDisableSmrr ();

 

   //

   // Replace all MTRRs registers

   //

-  BiosMtrr  = (MTRR_SETTINGS*)SmiMtrrs;

-  MtrrSetAllMtrrs(BiosMtrr);

+  MtrrSetAllMtrrs (&gSmiMtrrs);

 }

 

 /**

@@ -1379,7 +1371,6 @@ InitializeMpServiceData (
 {

   UINT32                    Cr3;

   UINTN                     Index;

-  MTRR_SETTINGS             *Mtrr;

   PROCESSOR_SMM_DESCRIPTOR  *Psd;

   UINT8                     *GdtTssTables;

   UINTN                     GdtTableStepSize;

@@ -1442,9 +1433,8 @@ InitializeMpServiceData (
   //

   // Record current MTRR settings

   //

-  ZeroMem(gSmiMtrrs, sizeof (gSmiMtrrs));

-  Mtrr =  (MTRR_SETTINGS*)gSmiMtrrs;

-  MtrrGetAllMtrrs (Mtrr);

+  ZeroMem (&gSmiMtrrs, sizeof (gSmiMtrrs));

+  MtrrGetAllMtrrs (&gSmiMtrrs);

 

   return Cr3;

 }