[v1] SEV-SNP accepted memory and BeforeExitBootServices

[edk2-devel] [PATCH 0/3] SEV-SNP accepted memory and BeforeExitBootServices

Dionna Glaze via groups.io posted 3 patches 1 year, 5 months ago

Diff against v2
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MdeModulePkg/Core/Dxe/DxeMain.inf                                  |  1 +
MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c                            |  6 +++
MdePkg/Include/Guid/EventGroup.h                                   |  5 ++
MdePkg/MdePkg.dec                                                  |  5 +-
OvmfPkg/AmdSevDxe/AmdSevDxe.c                                      | 55 ++++++++++++++++++--
OvmfPkg/AmdSevDxe/AmdSevDxe.inf                                    |  3 ++
OvmfPkg/Library/BaseMemEncryptSevLib/X64/DxeSnpSystemRamValidate.c | 24 +++++++--
7 files changed, 90 insertions(+), 9 deletions(-)

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[edk2-devel] [PATCH 0/3] SEV-SNP accepted memory and BeforeExitBootServices

Posted by Dionna Glaze via groups.io 1 year, 5 months ago

This is the first half of the patch series

[PATCH v8 0/7] Add safe unaccepted memory behavior

These patches add SEV-SNP support for the MemoryAccept protocol, and
implement an already standardized mechanism for performing any actions
just before terminating the memory map.

We implement a standardized event group from UEFI v2.9,
EFI_EVENT_GROUP_BEFORE_EXIT_BOOT_SERVICES, since it provides exactly
the right invocation point for eagerly accepting memory if eager
acceptance has not been disabled (i.e., unaccepted memory is enabled).

The use of the BeforeExitBootServices addition will come in the second
half of this series.

Cc: Ard Biescheuvel <ardb@kernel.org>
Cc: "Min M. Xu" <min.m.xu@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Tom Lendacky <Thomas.Lendacky@amd.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Andrew Fish <afish@apple.com>
Cc: "Michael D. Kinney" <michael.d.kinney@intel.com>

Signed-off-by: Dionna Glaze <dionnaglaze@google.com>

Dionna Glaze (3):
  OvmfPkg: Realize EfiMemoryAcceptProtocol in AmdSevDxe
  MdePkg: Add EFI_EVENT_BEFORE_EXIT_BOOT_SERVICES_GUID
  MdeModulePkg: Notify BeforeExitBootServices in CoreExitBootServices

 MdeModulePkg/Core/Dxe/DxeMain.inf                                  |  1 +
 MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c                            |  6 +++
 MdePkg/Include/Guid/EventGroup.h                                   |  5 ++
 MdePkg/MdePkg.dec                                                  |  5 +-
 OvmfPkg/AmdSevDxe/AmdSevDxe.c                                      | 55 ++++++++++++++++++--
 OvmfPkg/AmdSevDxe/AmdSevDxe.inf                                    |  3 ++
 OvmfPkg/Library/BaseMemEncryptSevLib/X64/DxeSnpSystemRamValidate.c | 24 +++++++--
 7 files changed, 90 insertions(+), 9 deletions(-)

-- 
2.38.1.431.g37b22c650d-goog



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