[Patch 1/3] UefiCpuPkg/RegisterCpuFeaturesLib: Avoid AP calls PeiService.

[Eric Dong <eric.dong@intel.com>]

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 <ruiyu.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <eric.dong@intel.com>
---
 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