[edk2-devel] [PATCH 0/3] OvmfPkg: Make IntelTdx work with Cloud Hypervisor

[Boeuf, Sebastien]

From: Sebastien Boeuf <sebastien.boeuf at intel.com>

The IntelTdxX64 OVMF target wasn't working with Cloud Hypervisor on TDX
platform. This was due to the way the OVMF code expects Cloud Hypervisor
to rely on PVH to retrieve information like memory below 4GiB as well as
the ACPI tables.

This is why this series takes care of identifying when running on TDX in
order to handle things differently. For the memory below 4GiB, it falls
back onto the CMOS to retrieve the correct information, and for the ACPI
tables, it relies on the HOB to obtain every table individually before
to expose them to the guest OS.

With these two use cases properly handled by this series, it is now
possible to use the IntelTdxX64 target to build an OVMF binary that
works both for QEMU and Cloud Hypervisor on a TDX platform.

Sebastien Boeuf (3):
  OvmfPkg/PlatformInitLib: Differentiate TDX case for Cloud Hypervisor
  OvmfPkg/PlatformInitLib: Transfer GUID Extension HOB
  OvmfPkg/AcpiPlatformDxe: Differentiate TDX case for Cloud Hypervisor

 OvmfPkg/AcpiPlatformDxe/AcpiPlatform.c      |  8 +-
 OvmfPkg/AcpiPlatformDxe/AcpiPlatform.h      |  6 ++
 OvmfPkg/AcpiPlatformDxe/AcpiPlatformDxe.inf |  2 +
 OvmfPkg/AcpiPlatformDxe/CloudHvAcpi.c       | 87 +++++++++++++++++++++
 OvmfPkg/Library/PlatformInitLib/IntelTdx.c  |  5 ++
 OvmfPkg/Library/PlatformInitLib/MemDetect.c |  4 +-
 OvmfPkg/OvmfPkg.dec                         |  1 +
 7 files changed, 111 insertions(+), 2 deletions(-)

-- 
2.34.1

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