Re: [PATCH 00/15] Enable TDX Module Extensions and DICE-based TDX Quoting

[Dave Hansen]

On 6/15/26 08:22, Xu Yilun wrote:
>> The TDX "Extension SEAMCALL" capability is akin to ARM CCA's "Stateful
>> RMI Operations (SRO)", and achieves similar externalized complexity
>> relief as a dedicated hardware coprocessor like AMD SEV-SNP. The
> I may not include the ARM/AMD examples, not sure I can explain them
> well.

I actually think they're pretty important proof points. One of the big
challenges as a maintainer evaluating these things is judging the
solution itself.

Is this architecture a good one? Is it overly complex? Are the avenues
for simplification?

If five vendors pop up all with similar problems and solutions, then
it's a pretty good bet that they're all on the right track. But, if
there are four going one direction and one going off by itself, it's a
sign that the errant one might need a course correction.

It would honestly be worth your time to go *talk* to the AMD and ARM
folks and ensure that you are all on the same page. Last I checked, they
seemed to be at least halfway reasonable human beings and don't bite.
Let me know if I can help with some introductions.