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| author | Jeff Fan <jeff.fan@intel.com> | 2017-05-26 19:50:43 +0800 |
|---|---|---|
| committer | Jeff Fan <jeff.fan@intel.com> | 2017-05-27 13:30:04 +0800 |
| commit | 71d8226ac6f256d360626c8072337f9373f95671 (patch) | |
| tree | d714b732424e8747459100837b01d064780be8c7 /UefiCpuPkg | |
| parent | c6b0feb39637867744bb7bffaa8534ecb1de707d (diff) | |
| download | edk2-71d8226ac6f256d360626c8072337f9373f95671.tar.gz edk2-71d8226ac6f256d360626c8072337f9373f95671.tar.bz2 edk2-71d8226ac6f256d360626c8072337f9373f95671.zip | |
UefiCpuPkg/MpInitLib: Force to enable X2APIC if CPU number > 255
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Diffstat (limited to 'UefiCpuPkg')
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/MpLib.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c index c6f81914d2..df19b43bc0 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c @@ -451,6 +451,12 @@ CollectProcessorCount ( CpuPause ();
}
+ if (CpuMpData->CpuCount > 255) {
+ //
+ // If there are more than 255 processor found, force to enable X2APIC
+ //
+ CpuMpData->X2ApicEnable = TRUE;
+ }
if (CpuMpData->X2ApicEnable) {
DEBUG ((DEBUG_INFO, "Force x2APIC mode!\n"));
//
@@ -1412,7 +1418,7 @@ MpInitLibInitialize ( CpuInfoInHob = (CPU_INFO_IN_HOB *) (UINTN) CpuMpData->CpuInfoInHob;
for (Index = 0; Index < CpuMpData->CpuCount; Index++) {
InitializeSpinLock(&CpuMpData->CpuData[Index].ApLock);
- if (CpuInfoInHob[Index].InitialApicId >= 255) {
+ if (CpuInfoInHob[Index].InitialApicId >= 255 || Index > 254) {
CpuMpData->X2ApicEnable = TRUE;
}
CpuMpData->CpuData[Index].CpuHealthy = (CpuInfoInHob[Index].Health == 0)? TRUE:FALSE;
|