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DescriptionEduardo Habkost
2021-07-14 11:46:17 UTC
Issue detected while testing bug 1904267:
(In reply to Laszlo Ersek from bug 1904267 comment #57)
> (In reply to Eduardo Habkost from bug 1904267 comment #54)
> > (In reply to Brian Payton from bug 1904267 comment #30)
> > > Simple failure with 1024 vcpus and 8TB
> >
> > For reference, this is the failure on debugcon:
> >
> > [...]
> > GetMicrocodePatchInfoFromHob: Microcode patch cache HOB is not found.
> > CpuMpPei: 5-Level Paging = 0
> > Register PPI Notify: 8F9D4825-797D-48FC-8471-845025792EF6
> >
> > ASSERT_EFI_ERROR (Status = Out of Resources)
> > ASSERT
> > /builddir/build/BUILD/edk2-ca407c7246bf/UefiCpuPkg/CpuMpPei/CpuBist.c(186):
> > !EFI_ERROR (Status)
> >
> >
> >
> > And this is the failing code:
> >
> > BistInformationSize = sizeof (EFI_SEC_PLATFORM_INFORMATION_RECORD2) +
> > sizeof (EFI_SEC_PLATFORM_INFORMATION_CPU) *
> > NumberOfProcessors;
> > Status = PeiServicesAllocatePool (
> > (UINTN) BistInformationSize,
> > (VOID **) &PlatformInformationRecord2
> > );
> > ASSERT_EFI_ERROR (Status);
> >
> > Maybe we're hitting some limit on allocation sizes? I don't know what's the
> > size of EFI_SEC_PLATFORM_INFORMATION_RECORD2 and
> > EFI_SEC_PLATFORM_INFORMATION_CPU.
>
> This is an edk2 design limitation.
>
> Please file an edk2 bug for RHEL-8, and clone it for RHEL-9.
>
> Meanwhile I've sent an upstream problem report:
>
> * [edk2-devel] CPU count limitation in CpuMpPei BIST processing
>
>
> https://listman.redhat.com/archives/edk2-devel-archive/2021-June/msg01493.
> html
> http://mid.mail-archive.com/ffa9d7db-b670-8b88-758f-4785c8d05d40@redhat.com
> https://edk2.groups.io/g/devel/message/77376
Comment 2Klaus Heinrich Kiwi
2021-07-16 13:01:41 UTC
Eduardo,
sounds like this is a standing limitation of edk2 (and not a regression) - can you help us understand the severity? Is this something that we could treat as a RFE?
(In reply to Klaus Heinrich Kiwi from comment #2)
> Eduardo,
>
> sounds like this is a standing limitation of edk2 (and not a regression) -
> can you help us understand the severity? Is this something that we could
> treat as a RFE?
Absolutely. 1024-VCPU VMs is not something Red Hat supports yet, and this can be treated as an RFE.
Comment 4Klaus Heinrich Kiwi
2021-07-19 17:51:47 UTC
(In reply to Eduardo Habkost from comment #3)
> (In reply to Klaus Heinrich Kiwi from comment #2)
> > Eduardo,
> >
> > sounds like this is a standing limitation of edk2 (and not a regression) -
> > can you help us understand the severity? Is this something that we could
> > treat as a RFE?
>
> Absolutely. 1024-VCPU VMs is not something Red Hat supports yet, and this
> can be treated as an RFE.
Thanks.. for now, I'm attributing the 'low priority' with 'medium severity' given it's something we want to support eventually.
Comment 8Klaus Heinrich Kiwi
2022-02-07 15:03:45 UTC
Rejecting this Bug as we're not currently planning on bringing this work on RHEL 8.x line. The RHEL9 Bug can be tracked at Bug 1983086