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| author | Wu, Jiaxin <jiaxin.wu@intel.com> | 2022-07-29 14:25:55 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-08-31 04:23:55 +0000 |
| commit | 76ec17526b7ebd0893f8e2e27ee4e4baf017eeef (patch) | |
| tree | 68a28e839974e6bc02a21ce34a5efde8045794bb /UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf | |
| parent | 367604b2f49f1b7517756a4ecab426f5308ba7fb (diff) | |
| download | edk2-76ec17526b7ebd0893f8e2e27ee4e4baf017eeef.tar.gz edk2-76ec17526b7ebd0893f8e2e27ee4e4baf017eeef.tar.bz2 edk2-76ec17526b7ebd0893f8e2e27ee4e4baf017eeef.zip | |
UefiCpuPkg: Add PCD to control SMRR enable & SmmFeatureControl support
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3962
Two SMM variables (mSmrrSupported & mSmmFeatureControlSupported) are global
variables, they control whether the SMRR and SMM Feature Control MSR will
be restored respectively.
To avoid the TOCTOU, add PCD to control SMRR & SmmFeatureControl enable.
Cc: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>
Diffstat (limited to 'UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf')
| -rw-r--r-- | UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf index 35292dac31..7b5cef9700 100644 --- a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf +++ b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf @@ -35,3 +35,7 @@ [Pcd]
gUefiCpuPkgTokenSpaceGuid.PcdCpuMaxLogicalProcessorNumber ## SOMETIMES_CONSUMES
+
+[FeaturePcd]
+ gUefiCpuPkgTokenSpaceGuid.PcdSmrrEnable ## CONSUMES
+ gUefiCpuPkgTokenSpaceGuid.PcdSmmFeatureControlEnable ## CONSUMES
|