[edk2-devel] [0/2] Fixes for AmdSev OVMF package regressions

[edk2-devel] [0/2] Fixes for AmdSev OVMF package regressions

[Roth, Michael via groups.io]

A couple changes broke booting of SEV and SNP guests when using the
AmdSevX64 package in conjunction with QEMU:

  UefiCpuPkg:Wake up APs after power-up or RESET through SIPI.
  OvmfPkg/AmdSev: stop using PlatformBootManagerLibGrub

Both fixes are fairly straightforward and mainly seem to stem from
AmdSevX64.dsc and friends getting overlooked when updating various
OvmfPkg variants with new changes. This series updates the AmdSev
build accordingly. I've grouped them into a series since both
patches are needed to fix booting of SEV/SNP guests.

----------------------------------------------------------------
Michael Roth (2):
      OvmfPkg/AmdSev: fix BdsPlatform.c assertion failure during boot
      OvmfPkg/AmdSev: Disable PcdFirstTimeWakeUpAPsBySipti

 OvmfPkg/AmdSev/AmdSevX64.dsc | 11 +++++++++++
 OvmfPkg/AmdSev/AmdSevX64.fdf |  2 ++
 2 files changed, 13 insertions(+)




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[edk2-devel] [PATCH 1/2] OvmfPkg/AmdSev: fix BdsPlatform.c assertion failure during boot

[Roth, Michael via groups.io]

Booting an SEV guest with AmdSev OVMF package currently triggers the
following assertion with QEMU:

  InstallQemuFwCfgTables: installed 7 tables
  PcRtc: Write 0x20 to CMOS location 0x32
  [Variable]END_OF_DXE is signaled
  Initialize variable error flag (FF)

  ASSERT_EFI_ERROR (Status = Not Found)
  ASSERT [BdsDxe] /home/VT_BUILD/ovmf/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c(1711): !(((INTN)(RETURN_STATUS)(Status)) < 0)

This seems to be due to commit 81dc0d8b4c, which switched to using
PlatformBootManagerLib instead of PlatformBootManagerLibGrub. That
pulls in a dependency on gEfiS3SaveStateProtocolGuid provider being
available (which is asserted for in
BdsPlatform.c:PlatformBootManagerBeforeConsole()/SaveS3BootScript()),
but the libraries that provide it aren't currently included in the
build. Add them similarly to what's done for OvmfPkg.

Fixes: 81dc0d8b4c ("OvmfPkg/AmdSev: stop using PlatformBootManagerLibGrub")
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
---
 OvmfPkg/AmdSev/AmdSevX64.dsc | 3 +++
 OvmfPkg/AmdSev/AmdSevX64.fdf | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/OvmfPkg/AmdSev/AmdSevX64.dsc b/OvmfPkg/AmdSev/AmdSevX64.dsc
index 2c6ed7c974..f43300a95e 100644
--- a/OvmfPkg/AmdSev/AmdSevX64.dsc
+++ b/OvmfPkg/AmdSev/AmdSevX64.dsc
@@ -200,6 +200,7 @@
 

   SmbusLib|MdePkg/Library/BaseSmbusLibNull/BaseSmbusLibNull.inf

   OrderedCollectionLib|MdePkg/Library/BaseOrderedCollectionRedBlackTreeLib/BaseOrderedCollectionRedBlackTreeLib.inf

+  S3BootScriptLib|MdeModulePkg/Library/PiDxeS3BootScriptLib/DxeS3BootScriptLib.inf

 

 !include OvmfPkg/Include/Dsc/OvmfTpmLibs.dsc.inc

 

@@ -709,6 +710,8 @@
   #

   MdeModulePkg/Universal/Acpi/AcpiTableDxe/AcpiTableDxe.inf

   OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf

+  MdeModulePkg/Universal/Acpi/S3SaveStateDxe/S3SaveStateDxe.inf

+  MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/BootScriptExecutorDxe.inf

   MdeModulePkg/Universal/Acpi/BootGraphicsResourceTableDxe/BootGraphicsResourceTableDxe.inf

 

   #

diff --git a/OvmfPkg/AmdSev/AmdSevX64.fdf b/OvmfPkg/AmdSev/AmdSevX64.fdf
index 463bd3e9ef..b2ab0c7773 100644
--- a/OvmfPkg/AmdSev/AmdSevX64.fdf
+++ b/OvmfPkg/AmdSev/AmdSevX64.fdf
@@ -270,6 +270,8 @@ INF  OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.inf
 

 INF  MdeModulePkg/Universal/Acpi/AcpiTableDxe/AcpiTableDxe.inf

 INF  OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf

+INF  MdeModulePkg/Universal/Acpi/S3SaveStateDxe/S3SaveStateDxe.inf

+INF  MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/BootScriptExecutorDxe.inf

 INF  MdeModulePkg/Universal/Acpi/BootGraphicsResourceTableDxe/BootGraphicsResourceTableDxe.inf

 

 INF  FatPkg/EnhancedFatDxe/Fat.inf

-- 
2.25.1



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[edk2-devel] [PATCH 2/2] OvmfPkg/AmdSev: Disable PcdFirstTimeWakeUpAPsBySipti

[Roth, Michael via groups.io]

PcdFirstTimeWakeUpAPsBySipi was recently introduced to indicate when
the full INIT-SIPI-SIPI sequence can be skipped for AP bringup. It is
true by default, but needs to be disabled for QEMU/OVMF where early INIT
is not simulated. Commit 1d76560146 ("OvmfPkg: Disable
PcdFirstTimeWakeUpAPsBySipi.") added changes to disable it
by default for OvmfPkg, but a similar change was not made for the
AmdSev package. This breaks booting of SEV and SNP guests.

Fix this defaulting PcdFirstTimeWakeUpAPsBySipi to false for AmdSev
package, as was previously done for OvmfPkg variants.

Fixes: eaffa1d7ff ("UefiCpuPkg:Wake up APs after power-up or RESET through SIPI.")
Cc: YuanhaoXie <yuanhao.xie@intel.com>
Cc: Tom Lendacky <Thomas.Lendacky@amd.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Min Xu <min.m.xu@intel.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
---
 OvmfPkg/AmdSev/AmdSevX64.dsc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/OvmfPkg/AmdSev/AmdSevX64.dsc b/OvmfPkg/AmdSev/AmdSevX64.dsc
index f43300a95e..cf058f6a05 100644
--- a/OvmfPkg/AmdSev/AmdSevX64.dsc
+++ b/OvmfPkg/AmdSev/AmdSevX64.dsc
@@ -469,6 +469,14 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdConInConnectOnDemand|TRUE

   gUefiOvmfPkgTokenSpaceGuid.PcdBootRestrictToFirmware|TRUE

 

+  #

+  # INIT is now triggered before BIOS by ucode/hardware. In the OVMF

+  # environment, QEMU lacks a simulation for the INIT process.

+  # To address this, PcdFirstTimeWakeUpAPsBySipi set to FALSE to

+  # broadcast INIT-SIPI-SIPI for the first time.

+  #

+  gUefiCpuPkgTokenSpaceGuid.PcdFirstTimeWakeUpAPsBySipi|FALSE

+

 ################################################################################

 #

 # Pcd Dynamic Section - list of all EDK II PCD Entries defined by this Platform

-- 
2.25.1



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Re: [edk2-devel] [PATCH 2/2] OvmfPkg/AmdSev: Disable PcdFirstTimeWakeUpAPsBySipti

[Ard Biesheuvel]

On Wed, 16 Aug 2023 at 22:13, Michael Roth <michael.roth@amd.com> wrote:
>
> PcdFirstTimeWakeUpAPsBySipi was recently introduced to indicate when
> the full INIT-SIPI-SIPI sequence can be skipped for AP bringup. It is
> true by default, but needs to be disabled for QEMU/OVMF where early INIT
> is not simulated. Commit 1d76560146 ("OvmfPkg: Disable
> PcdFirstTimeWakeUpAPsBySipi.") added changes to disable it
> by default for OvmfPkg, but a similar change was not made for the
> AmdSev package. This breaks booting of SEV and SNP guests.
>
> Fix this defaulting PcdFirstTimeWakeUpAPsBySipi to false for AmdSev
> package, as was previously done for OvmfPkg variants.
>
> Fixes: eaffa1d7ff ("UefiCpuPkg:Wake up APs after power-up or RESET through SIPI.")
> Cc: YuanhaoXie <yuanhao.xie@intel.com>
> Cc: Tom Lendacky <Thomas.Lendacky@amd.com>
> Cc: Eric Dong <eric.dong@intel.com>
> Cc: Ray Ni <ray.ni@intel.com>
> Cc: Rahul Kumar <rahul1.kumar@intel.com>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Cc: Jordan Justen <jordan.l.justen@intel.com>
> Cc: Erdem Aktas <erdemaktas@google.com>
> Cc: James Bottomley <jejb@linux.ibm.com>
> Cc: Min Xu <min.m.xu@intel.com>
> Signed-off-by: Michael Roth <michael.roth@amd.com>

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>

Apologies for the oversight. This should be included in the upcoming stable tag.


> ---
>  OvmfPkg/AmdSev/AmdSevX64.dsc | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/OvmfPkg/AmdSev/AmdSevX64.dsc b/OvmfPkg/AmdSev/AmdSevX64.dsc
> index f43300a95e..cf058f6a05 100644
> --- a/OvmfPkg/AmdSev/AmdSevX64.dsc
> +++ b/OvmfPkg/AmdSev/AmdSevX64.dsc
> @@ -469,6 +469,14 @@
>    gEfiMdeModulePkgTokenSpaceGuid.PcdConInConnectOnDemand|TRUE
>    gUefiOvmfPkgTokenSpaceGuid.PcdBootRestrictToFirmware|TRUE
>
> +  #
> +  # INIT is now triggered before BIOS by ucode/hardware. In the OVMF
> +  # environment, QEMU lacks a simulation for the INIT process.
> +  # To address this, PcdFirstTimeWakeUpAPsBySipi set to FALSE to
> +  # broadcast INIT-SIPI-SIPI for the first time.
> +  #
> +  gUefiCpuPkgTokenSpaceGuid.PcdFirstTimeWakeUpAPsBySipi|FALSE
> +
>  ################################################################################
>  #
>  # Pcd Dynamic Section - list of all EDK II PCD Entries defined by this Platform
> --
> 2.25.1
>


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Re: [edk2-devel] [PATCH 1/2] OvmfPkg/AmdSev: fix BdsPlatform.c assertion failure during boot

[Gerd Hoffmann]

On Wed, Aug 16, 2023 at 03:11:45PM -0500, Michael Roth wrote:
> Booting an SEV guest with AmdSev OVMF package currently triggers the
> following assertion with QEMU:
> 
>   InstallQemuFwCfgTables: installed 7 tables
>   PcRtc: Write 0x20 to CMOS location 0x32
>   [Variable]END_OF_DXE is signaled
>   Initialize variable error flag (FF)
> 
>   ASSERT_EFI_ERROR (Status = Not Found)
>   ASSERT [BdsDxe] /home/VT_BUILD/ovmf/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c(1711): !(((INTN)(RETURN_STATUS)(Status)) < 0)
> 
> This seems to be due to commit 81dc0d8b4c, which switched to using
> PlatformBootManagerLib instead of PlatformBootManagerLibGrub. That
> pulls in a dependency on gEfiS3SaveStateProtocolGuid provider being
> available (which is asserted for in
> BdsPlatform.c:PlatformBootManagerBeforeConsole()/SaveS3BootScript()),
> but the libraries that provide it aren't currently included in the
> build. Add them similarly to what's done for OvmfPkg.
> 
> Fixes: 81dc0d8b4c ("OvmfPkg/AmdSev: stop using PlatformBootManagerLibGrub")
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Cc: Ray Ni <ray.ni@intel.com>
> Cc: Erdem Aktas <erdemaktas@google.com>
> Cc: James Bottomley <jejb@linux.ibm.com>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Cc: Min Xu <min.m.xu@intel.com>
> Cc: Tom Lendacky <thomas.lendacky@amd.com>
> Signed-off-by: Michael Roth <michael.roth@amd.com>

Acked-by: Gerd Hoffmann <kraxel@redhat.com>

should be added to the stable tag.

take care,
  Gerd



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Re: [edk2-devel] [PATCH 2/2] OvmfPkg/AmdSev: Disable PcdFirstTimeWakeUpAPsBySipti

[Gerd Hoffmann]

On Wed, Aug 16, 2023 at 03:11:46PM -0500, Michael Roth wrote:
> PcdFirstTimeWakeUpAPsBySipi was recently introduced to indicate when
> the full INIT-SIPI-SIPI sequence can be skipped for AP bringup. It is
> true by default, but needs to be disabled for QEMU/OVMF where early INIT
> is not simulated. Commit 1d76560146 ("OvmfPkg: Disable
> PcdFirstTimeWakeUpAPsBySipi.") added changes to disable it
> by default for OvmfPkg, but a similar change was not made for the
> AmdSev package. This breaks booting of SEV and SNP guests.
> 
> Fix this defaulting PcdFirstTimeWakeUpAPsBySipi to false for AmdSev
> package, as was previously done for OvmfPkg variants.

I suspect all ovmf builds need that, including AmdSev, IntelTdx,
Microvm variants.  Xen probably too.  Not sure about Bhyve.

So, a step into the right direction but not complete ...

take care,
  Gerd



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Re: [edk2-devel] [PATCH 1/2] OvmfPkg/AmdSev: fix BdsPlatform.c assertion failure during boot

[Yao, Jiewen]

Acked-by: Jiewen Yao <Jiewen.yao@intel.com>

> -----Original Message-----
> From: Gerd Hoffmann <kraxel@redhat.com>
> Sent: Monday, August 21, 2023 11:29 PM
> To: Michael Roth <michael.roth@amd.com>
> Cc: devel@edk2.groups.io; Ni, Ray <ray.ni@intel.com>; Aktas, Erdem
> <erdemaktas@google.com>; James Bottomley <jejb@linux.ibm.com>; Yao,
> Jiewen <jiewen.yao@intel.com>; Xu, Min M <min.m.xu@intel.com>; Tom
> Lendacky <thomas.lendacky@amd.com>
> Subject: Re: [PATCH 1/2] OvmfPkg/AmdSev: fix BdsPlatform.c assertion failure
> during boot
> 
> On Wed, Aug 16, 2023 at 03:11:45PM -0500, Michael Roth wrote:
> > Booting an SEV guest with AmdSev OVMF package currently triggers the
> > following assertion with QEMU:
> >
> >   InstallQemuFwCfgTables: installed 7 tables
> >   PcRtc: Write 0x20 to CMOS location 0x32
> >   [Variable]END_OF_DXE is signaled
> >   Initialize variable error flag (FF)
> >
> >   ASSERT_EFI_ERROR (Status = Not Found)
> >   ASSERT [BdsDxe]
> /home/VT_BUILD/ovmf/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.
> c(1711): !(((INTN)(RETURN_STATUS)(Status)) < 0)
> >
> > This seems to be due to commit 81dc0d8b4c, which switched to using
> > PlatformBootManagerLib instead of PlatformBootManagerLibGrub. That
> > pulls in a dependency on gEfiS3SaveStateProtocolGuid provider being
> > available (which is asserted for in
> > BdsPlatform.c:PlatformBootManagerBeforeConsole()/SaveS3BootScript()),
> > but the libraries that provide it aren't currently included in the
> > build. Add them similarly to what's done for OvmfPkg.
> >
> > Fixes: 81dc0d8b4c ("OvmfPkg/AmdSev: stop using
> PlatformBootManagerLibGrub")
> > Cc: Gerd Hoffmann <kraxel@redhat.com>
> > Cc: Ray Ni <ray.ni@intel.com>
> > Cc: Erdem Aktas <erdemaktas@google.com>
> > Cc: James Bottomley <jejb@linux.ibm.com>
> > Cc: Jiewen Yao <jiewen.yao@intel.com>
> > Cc: Min Xu <min.m.xu@intel.com>
> > Cc: Tom Lendacky <thomas.lendacky@amd.com>
> > Signed-off-by: Michael Roth <michael.roth@amd.com>
> 
> Acked-by: Gerd Hoffmann <kraxel@redhat.com>
> 
> should be added to the stable tag.
> 
> take care,
>   Gerd



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Re: [edk2-devel] [PATCH 2/2] OvmfPkg/AmdSev: Disable PcdFirstTimeWakeUpAPsBySipti

[Gerd Hoffmann]

On Wed, Aug 16, 2023 at 03:11:46PM -0500, Michael Roth wrote:
> PcdFirstTimeWakeUpAPsBySipi was recently introduced to indicate when
> the full INIT-SIPI-SIPI sequence can be skipped for AP bringup. It is
> true by default, but needs to be disabled for QEMU/OVMF where early INIT
> is not simulated. Commit 1d76560146 ("OvmfPkg: Disable
> PcdFirstTimeWakeUpAPsBySipi.") added changes to disable it
> by default for OvmfPkg, but a similar change was not made for the
> AmdSev package. This breaks booting of SEV and SNP guests.
> 
> Fix this defaulting PcdFirstTimeWakeUpAPsBySipi to false for AmdSev
> package, as was previously done for OvmfPkg variants.

Yuanhao Xie has sent a patch for IntelTdx, Microvm and Xen, so we can
take this as-is.

Acked-by: Gerd Hoffmann <kraxel@redhat.com>

take care,
  Gerd



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Re: [edk2-devel] [PATCH 2/2] OvmfPkg/AmdSev: Disable PcdFirstTimeWakeUpAPsBySipti

[Gerd Hoffmann]

On Wed, Aug 16, 2023 at 10:22:30PM +0200, Ard Biesheuvel wrote:
> On Wed, 16 Aug 2023 at 22:13, Michael Roth <michael.roth@amd.com> wrote:
> >
> > PcdFirstTimeWakeUpAPsBySipi was recently introduced to indicate when
> > the full INIT-SIPI-SIPI sequence can be skipped for AP bringup. It is
> > true by default, but needs to be disabled for QEMU/OVMF where early INIT
> > is not simulated. Commit 1d76560146 ("OvmfPkg: Disable
> > PcdFirstTimeWakeUpAPsBySipi.") added changes to disable it
> > by default for OvmfPkg, but a similar change was not made for the
> > AmdSev package. This breaks booting of SEV and SNP guests.
> >
> > Fix this defaulting PcdFirstTimeWakeUpAPsBySipi to false for AmdSev
> > package, as was previously done for OvmfPkg variants.
> >
> > Fixes: eaffa1d7ff ("UefiCpuPkg:Wake up APs after power-up or RESET through SIPI.")
> > Cc: YuanhaoXie <yuanhao.xie@intel.com>
> > Cc: Tom Lendacky <Thomas.Lendacky@amd.com>
> > Cc: Eric Dong <eric.dong@intel.com>
> > Cc: Ray Ni <ray.ni@intel.com>
> > Cc: Rahul Kumar <rahul1.kumar@intel.com>
> > Cc: Gerd Hoffmann <kraxel@redhat.com>
> > Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
> > Cc: Jiewen Yao <jiewen.yao@intel.com>
> > Cc: Jordan Justen <jordan.l.justen@intel.com>
> > Cc: Erdem Aktas <erdemaktas@google.com>
> > Cc: James Bottomley <jejb@linux.ibm.com>
> > Cc: Min Xu <min.m.xu@intel.com>
> > Signed-off-by: Michael Roth <michael.roth@amd.com>
> 
> Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
> 
> Apologies for the oversight. This should be included in the upcoming stable tag.

Including into the stable tag didn't work out, but can we merge it now
please?

thanks,
  Gerd



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