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| author | Eric Dong <eric.dong@intel.com> | 2017-08-17 11:33:30 +0800 |
|---|---|---|
| committer | Eric Dong <eric.dong@intel.com> | 2017-08-28 15:23:21 +0800 |
| commit | ac401975581daf1e4e353898f7441eeb668ba304 (patch) | |
| tree | 488fb4567cea977b82d7c54c057c1f9f1e89bf0d | |
| parent | ef5e0db22cdd73e9727afcaa5c7fe8e55b7b3671 (diff) | |
| download | edk2-ac401975581daf1e4e353898f7441eeb668ba304.tar.gz edk2-ac401975581daf1e4e353898f7441eeb668ba304.tar.bz2 edk2-ac401975581daf1e4e353898f7441eeb668ba304.zip | |
UefiCpuPkg/CpuCommonFeaturesLib: Add CPUID MCA support check
Add CPUID check to see if the CPU supports the Machine Check
Architecture before accessing the Machine Check Architecture
related MSRs.
Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
| -rw-r--r-- | UefiCpuPkg/Library/CpuCommonFeaturesLib/Lmce.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/UefiCpuPkg/Library/CpuCommonFeaturesLib/Lmce.c b/UefiCpuPkg/Library/CpuCommonFeaturesLib/Lmce.c index 65e5cd3ca5..bf7e26b851 100644 --- a/UefiCpuPkg/Library/CpuCommonFeaturesLib/Lmce.c +++ b/UefiCpuPkg/Library/CpuCommonFeaturesLib/Lmce.c @@ -41,6 +41,10 @@ LmceSupport ( {
MSR_IA32_MCG_CAP_REGISTER McgCap;
+ if (!McaSupport (ProcessorNumber, CpuInfo, ConfigData)) {
+ return FALSE;
+ }
+
McgCap.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_CAP);
if (ProcessorNumber == 0) {
DEBUG ((EFI_D_INFO, "LMCE eanble = %x\n", (BOOLEAN) (McgCap.Bits.MCG_LMCE_P != 0)));
|