In AcquireSpinLock function, it calls GetPerformanceCounter which final calls PeiService service. This patch avoid to call AcquireSpinLock function.
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1411 Cc: Ruiyu Ni <[email protected]> Cc: Laszlo Ersek <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Eric Dong <[email protected]> --- UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c index 624ddee055..a64326239f 100644 --- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c +++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c @@ -832,7 +832,12 @@ ProgramProcessorRegister ( RegisterTableEntry = &RegisterTableEntryHead[Index]; DEBUG_CODE_BEGIN (); - AcquireSpinLock (&CpuFlags->ConsoleLogLock); + // + // Wait for the AP to release the MSR spin lock. + // + while (!AcquireSpinLockOrFail (&CpuFlags->ConsoleLogLock)) { + CpuPause (); + } ThreadIndex = ApLocation->Package * CpuStatus->MaxCoreCount * CpuStatus->MaxThreadCount + ApLocation->Core * CpuStatus->MaxThreadCount + ApLocation->Thread; -- 2.15.0.windows.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
