Thanks Min for the reference of the firmware design guide.

If VMM is expected to set it then issue I mentioned with CoreInitializeMemoryServices can be ignored.

Though its mentioned in the design guide, I was confused by the current implementation of TDX Qemu as per:
https://github.com/intel/qemu-tdx/blob/tdx/hw/i386/tdvf-hob.c#L169
https://github.com/intel/qemu-tdx/blob/852a069e739a6ffae4f9dec17607a74690b0e4af/hw/i386/tdvf-hob.h#L15

and config B patches:
https://github.com/mxu9/edk2/commit/c5d5786290b2455c5a0a7e3515cf04ec2218d8a4#diff-7cb0d3ac758c9b92166d03049917116ca4a5cb012db99deb491f63c5c5562e0aR124

It's possible that I have incomplete view of Qemu implementation or Config B patches.

Regards,
Vishal