Hi Gerd,
I have updated is in V2.
Please have a check.
Thanks
Yuanhao
-----Original Message-----
From: Gerd Hoffmann <kra...@redhat.com>
Sent: Tuesday, June 20, 2023 10:09 PM
To: devel@edk2.groups.io; Xie, Yuanhao <yuanhao....@intel.com>
Cc: Dong, Eric <eric.d...@intel.com>; Ni, Ray <ray...@intel.com>; Kumar, Rahul
R <rahul.r.ku...@intel.com>; Tom Lendacky <thomas.lenda...@amd.com>
Subject: Re: [edk2-devel] [PATCH 1/5] UefiCpuPkg: Create MpHandOff to transfer
info from PEI to DXE.
Hi,
> +typedef struct {
> + UINT32 ApicId;
> + UINT32 Health;
> + UINT64 StartupSignalAddress;
> + UINT64 StartupProcedureAddress;
> +} PROCESSOR_HAND_OFF;
> +
> +typedef struct {
> + //
> + // The ProcessorIndex indicates the range of processors. If it is
> +set to 0, it signifies
> + // processors from 0 to CpuCount - 1. Multiple instances in the HOB
> +list describe
> + // processors from ProcessorIndex to ProcessorIndex + CpuCount - 1.
> + //
> + UINT32 ProcessorIndex;
> + UINT32 CpuCount;
> + UINT32 WaitLoopExecutionMode;
> + UINT32 StartupSignalValue;
> + PROCESSOR_HAND_OFF Info[];
> +} MP_HAND_OFF;
This works for ~2700 processors, with larger numbers you hit the hob size
limit. Not a good idea IMHO, we already have systems that big.
take care,
Gerd
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