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Bug 1982176 - Assertion failure when creating 1024 VCPU VM: [...]UefiCpuPkg/CpuMpPei/CpuBist.c(186): !EFI_ERROR (Status)
Summary: Assertion failure when creating 1024 VCPU VM: [...]UefiCpuPkg/CpuMpPei/CpuBis...
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: edk2
Version: 8.6
Hardware: Unspecified
OS: Unspecified
low
medium
Target Milestone: beta
: ---
Assignee: Virtualization Maintenance
QA Contact: Yumei Huang
URL:
Whiteboard:
Depends On:
Blocks: 1788991 1983086
TreeView+ depends on / blocked
 
Reported: 2021-07-14 11:46 UTC by Eduardo Habkost
Modified: 2022-02-08 05:45 UTC (History)
12 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
: 1983086 (view as bug list)
Environment:
Last Closed: 2022-02-07 15:03:45 UTC
Type: Feature Request
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Eduardo 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 2 Klaus 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?
Comment 3 Eduardo Habkost 2021-07-16 13:29:03 UTC 
(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 4 Klaus 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 8 Klaus 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
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