[edk2-rfc] [edk2-devel] RFC: design review for TDVF in OVMF

[Min Xu]

On 06/22/2021 9:35 PM, Laszlo wrote: 
> 
> For example, as I stated earlier, "OvmfPkg/AcpiPlatformDxe" is a driver where
> I'd like to see zero changes, for either SEV or TDX. If the TD Mailbox location has
> to be reported to the OS via the MADT, and QEMU cannot (or must not)
> populate that field in the MADT, then a separate, TDX-specific edk2 driver should
> locate the MADT (installed technically by "OvmfPkg/AcpiPlatformDxe", earlier),
> and update the field.
> 
We have updated the design of AcpiPlatformDxe. Please see the slides in below link.
https://edk2.groups.io/g/devel/files/Designs/2021/0611/TDVF_Design_Review-AcpiPlatformDxe.pptx

Because MailboxAddress in MADT table is determined in runtime in Tdx, so we 
separate the update of the MADT table in TdxDxe driver and keep AcpiPlatformDxe clean
and shim.
>
>
> Thanks,
> Laszlo
> 
Thanks
Min


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