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UefiCpuPkg: Refactor the logic for placing APs in HltLoop. 

Refactor the logic for placing APs in HltLoop into a separate function.

Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Yuanhao Xie <yuanhao.xie@intel.com>
This commit is contained in:
Xie, Yuanhao 2023-06-28 16:47:20 +08:00 committed by mergify[bot]
parent 63923a5642
commit 88f436883b
1 changed files with 24 additions and 11 deletions
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35
UefiCpuPkg/Library/MpInitLib/MpLib.c
View File

@ -636,6 +636,28 @@ InitializeApData (
SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateIdle); SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateIdle);
} }
/**
This function place APs in Halt loop.
@param[in] CpuMpData Pointer to CPU MP Data
**/
VOID
PlaceAPInHltLoop (
IN CPU_MP_DATA *CpuMpData
)
{
while (TRUE) {
DisableInterrupts ();
if (CpuMpData->UseSevEsAPMethod) {
SevEsPlaceApHlt (CpuMpData);
} else {
CpuSleep ();
}
CpuPause ();
}
}
/** /**
This function will be called from AP reset code if BSP uses WakeUpAP. This function will be called from AP reset code if BSP uses WakeUpAP.
@ -812,19 +834,10 @@ ApWakeupFunction (
// Place AP is specified loop mode // Place AP is specified loop mode
// //
if (CpuMpData->ApLoopMode == ApInHltLoop) { if (CpuMpData->ApLoopMode == ApInHltLoop) {
PlaceAPInHltLoop (CpuMpData);
// //
// Place AP in HLT-loop // Never run here
// //
while (TRUE) {
DisableInterrupts ();
if (CpuMpData->UseSevEsAPMethod) {
SevEsPlaceApHlt (CpuMpData);
} else {
CpuSleep ();
}
CpuPause ();
}
} }
while (TRUE) { while (TRUE) {