Re: [PATCH 0/3] OvmfPkg: Make IntelTdx work with Cloud Hypervisor

["Yao, Jiewen" <jiewen.yao@intel.com>]

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

> -----Original Message-----
> From: Boeuf, Sebastien <sebastien.boeuf@intel.com>
> Sent: Monday, December 12, 2022 5:04 PM
> To: devel@edk2.groups.io
> Cc: Yao, Jiewen <jiewen.yao@intel.com>; Xu, Min M <min.m.xu@intel.com>;
> kraxel@redhat.com; Boeuf, Sebastien <sebastien.boeuf@intel.com>
> Subject: [PATCH 0/3] OvmfPkg: Make IntelTdx work with Cloud Hypervisor
> 
> From: Sebastien Boeuf <sebastien.boeuf@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