Reviewed-by: Ray Ni <ray...@intel.com> > -----Original Message----- > From: Gao, Liming <liming....@intel.com> > Sent: Monday, December 23, 2019 2:56 PM > To: devel@edk2.groups.io > Cc: Voelz, Jason <jason.vo...@intel.com>; Ni, Ray <ray...@intel.com> > Subject: [Patch 2/2] UefiCpuPkg/CpuCommonFeaturesLib: SMXE bit of CR4 should > set > > From: Jason Voelz <jason.vo...@intel.com> > > Add code to set SMXE in CR4 in the SmxInitialize flow when SMX is enabled. > > Signed-off-by: Jason Voelz <jason.vo...@intel.com> > Cc: Ray Ni <ray...@intel.com> > --- > UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c > b/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c > index 38d3f53f56..b4474d2fab 100644 > --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c > +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/FeatureControl.c > @@ -240,6 +240,15 @@ SmxInitialize ( > Status = RETURN_UNSUPPORTED; > } > > + CPU_REGISTER_TABLE_WRITE_FIELD ( > + ProcessorNumber, > + ControlRegister, > + 4, > + IA32_CR4, > + Bits.SMXE, > + (State) ? 1 : 0 > + ) > + > CPU_REGISTER_TABLE_TEST_THEN_WRITE_FIELD ( > ProcessorNumber, > Msr, > -- > 2.13.0.windows.1
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