* [edk2-devel] Regarding StandaloneMmPkg/Include/Guid/MpInformation.h
@ 2023-09-06 6:39 Ni, Ray
2023-09-06 16:10 ` Oliver Smith-Denny
0 siblings, 1 reply; 2+ messages in thread
From: Ni, Ray @ 2023-09-06 6:39 UTC (permalink / raw)
To: devel@edk2.groups.io, Sughosh Ganu, Achin Gupta, Achin Gupta,
Supreeth Venkatesh
Cc: Zimmer, Vincent, Ni, Ray, Chaganty, Rangasai V, Tan, Dun
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All,
StandaloneMmPkg/Include/Guid/MpInformation.h contains the MP_INFORMATION_HOB_DATA HOB definition.
This HOB is used for transfering MP information collected in non-SMM phase to standalone MM environment.
#pragma pack(1)
typedef struct {
UINT64 NumberOfProcessors;
UINT64 NumberOfEnabledProcessors;
EFI_PROCESSOR_INFORMATION ProcessorInfoBuffer[];
} MP_INFORMATION_HOB_DATA;
#pragma pack()
extern EFI_GUID gMpInformationHobGuid;
Is there any reason that the MP_INFORMATION_HOB_DATA HOB definition not documented in PI spec?
If no reason, I do feel that PI spec needs to carry the HOB definition.
Thoughts?
Thanks,
Ray
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* Re: [edk2-devel] Regarding StandaloneMmPkg/Include/Guid/MpInformation.h
2023-09-06 6:39 [edk2-devel] Regarding StandaloneMmPkg/Include/Guid/MpInformation.h Ni, Ray
@ 2023-09-06 16:10 ` Oliver Smith-Denny
0 siblings, 0 replies; 2+ messages in thread
From: Oliver Smith-Denny @ 2023-09-06 16:10 UTC (permalink / raw)
To: devel, ray.ni, Sughosh Ganu, Achin Gupta, Supreeth Venkatesh
Cc: Zimmer, Vincent, Chaganty, Rangasai V, Tan, Dun
On 9/5/2023 11:39 PM, Ni, Ray wrote:
> All,
>
> StandaloneMmPkg/Include/Guid/MpInformation.h contains the
> MP_INFORMATION_HOB_DATA HOB definition.
> This HOB is used for transfering MP information collected in non-SMM
> phase to standalone MM environment.
>
> #pragmapack(1)
> typedefstruct{
> UINT64NumberOfProcessors;
> UINT64NumberOfEnabledProcessors;
> EFI_PROCESSOR_INFORMATIONProcessorInfoBuffer[];
> }MP_INFORMATION_HOB_DATA;
> #pragmapack()
>
> externEFI_GUIDgMpInformationHobGuid;
>
>
> Is there any reason that the MP_INFORMATION_HOB_DATA HOB definition not
> documented in PI spec?
> If no reason, I do feel that PI spec needs to carry the HOB definition.
> Thoughts?
>
That seems reasonable to me. I was reviewing the PI spec recently to get
Standalone MM information, it is pretty sparse in general, in particular
where it relates to HOBs. I think more clarification for Standalone MM
in relation to HOBs would be helpful.
I see you are already on the other thread
(StandaloneMMPkg: Fix HOB Space and heap space conflicted issue), where
we are discussing just such a confusion in the PI spec.
Thanks,
Oliver
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2023-09-06 16:10 ` Oliver Smith-Denny
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