diff options
Diffstat (limited to 'UefiCpuPkg')
| -rw-r--r-- | UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c index 71fff0e5b0..0b75020425 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c @@ -966,10 +966,9 @@ CheckFeatureSupported ( // BTINT bits in the MSR_DEBUGCTLA MSR.
// 2. The IA32_DS_AREA MSR can be programmed to point to the DS save area.
//
- if ((AsmMsrBitFieldRead64 (MSR_IA32_MISC_ENABLE, 11, 11) == 0) &&
- (AsmMsrBitFieldRead64 (MSR_IA32_MISC_ENABLE, 12, 12) == 0)) {
+ if (AsmMsrBitFieldRead64 (MSR_IA32_MISC_ENABLE, 11, 11) == 1) {
//
- // BTS facilities is supported.
+ // BTS facilities is not supported if MSR_IA32_MISC_ENABLE BIT11 is set.
//
mBtsSupported = FALSE;
}
|