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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>
This commit is contained in:
Jeff Fan 2017-05-26 19:50:43 +08:00
parent c6b0feb396
commit 71d8226ac6
1 changed files with 7 additions and 1 deletions
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8
UefiCpuPkg/Library/MpInitLib/MpLib.c
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@ -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;