UefiCpuPkg: Clean up source files

[mirror_edk2.git] / UefiCpuPkg / Library / MpInitLib / MpLib.c

diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c
index f8ab5f115dc4938b870e2727a91722e2b4bdb134..eb2765910ca9fbd049c3808c8b5401e8bbf37997 100644 (file)
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
@@ -639,6 +639,13 @@ ApWakeupFunction (
         // Restore AP's volatile registers saved\r
         //\r
         RestoreVolatileRegisters (&CpuMpData->CpuData[ProcessorNumber].VolatileRegisters, TRUE);\r
+      } else {\r
+        //\r
+        // The CPU driver might not flush TLB for APs on spot after updating\r
+        // page attributes. AP in mwait loop mode needs to take care of it when\r
+        // woken up.\r
+        //\r
+        CpuFlushTlb ();\r
       }\r
 \r
       if (GetApState (&CpuMpData->CpuData[ProcessorNumber]) == CpuStateReady) {\r
@@ -648,7 +655,7 @@ ApWakeupFunction (
           SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateBusy);\r
           //\r
           // Enable source debugging on AP function\r
-          //         \r
+          //\r
           EnableDebugAgent ();\r
           //\r
           // Invoke AP function here\r
@@ -1108,7 +1115,7 @@ CalculateTimeout (
 \r
   //\r
   // GetPerformanceCounterProperties () returns the timestamp counter's frequency\r
-  // in Hz. \r
+  // in Hz.\r
   //\r
   TimestampCounterFreq = GetPerformanceCounterProperties (NULL, NULL);\r
 \r
@@ -1730,7 +1737,7 @@ MpInitLibGetProcessorInfo (
                                enabled AP. Otherwise, it will be disabled.\r
 \r
   @retval EFI_SUCCESS          BSP successfully switched.\r
-  @retval others               Failed to switch BSP. \r
+  @retval others               Failed to switch BSP.\r
 \r
 **/\r
 EFI_STATUS\r