diff options
Diffstat (limited to 'UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c')
| -rw-r--r-- | UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c index 71d6b0c6d8..081f0c1501 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c @@ -1654,11 +1654,13 @@ SmiRendezvous ( //
// Platform hook fails to determine, use default BSP election method
//
- InterlockedCompareExchange32 (
- (UINT32 *)&mSmmMpSyncData->BspIndex,
- MAX_UINT32,
- (UINT32)CpuIndex
- );
+ if (mSmmMpSyncData->BspIndex == MAX_UINT32) {
+ InterlockedCompareExchange32 (
+ (UINT32 *)&mSmmMpSyncData->BspIndex,
+ MAX_UINT32,
+ (UINT32)CpuIndex
+ );
+ }
}
}
}
|