[edk2-devel] [PATCH 18/23] OvmfPkg: Enable Tdx in SecMain.c

[Gerd Hoffmann]

  Hi,

> +/**
> +  In Tdx guest, some information need to be passed from host VMM to guest
> +  firmware. For example, the memory resource, etc. These information are
> +  prepared by host VMM and put in HobList which is described in TdxMetadata.

What kind of information is passed to the guest here?

qemu has fw_cfg to pass information from the VMM to the guest firmware.
What are the reasons to not use fw_cfg?

thanks,
  Gerd



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