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UefiCpuPkg: Add PCD to control SMRR enable & SmmFeatureControl support

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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>
This commit is contained in:
Wu, Jiaxin
2022-07-29 14:25:55 +08:00
committed by mergify[bot]
parent 367604b2f4
commit 76ec17526b
6 changed files with 48 additions and 23 deletions
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4
UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.inf
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@@ -35,3 +35,7 @@
[Pcd]
gUefiCpuPkgTokenSpaceGuid.PcdCpuMaxLogicalProcessorNumber ## SOMETIMES_CONSUMES
[FeaturePcd]
gUefiCpuPkgTokenSpaceGuid.PcdSmrrEnable ## CONSUMES
gUefiCpuPkgTokenSpaceGuid.PcdSmmFeatureControlEnable ## CONSUMES