Re: [PATCH Part1 RFC v3 11/22] x86/sev: Add helper for validating pages in early enc attribute changes

Borislav Petkov
2021-06-16T13:02:49Z

On Wed, Jun 16, 2021 at 07:49:25AM -0500, Brijesh Singh wrote:
> If you still think ...

I think you should answer my question first:

> Imagine you're a guest owner and you haven't written the SNP code and
> you don't know how it works.
>
> You start a guest in the public cloud and it fails because the
> hypervisor violates the GHCB protocol and all that guest prints before
> it dies is
>
> "general request termination"
>
> How are you - the guest owner - going to find out what exactly happened?
>
> Call support?

And let me paraphrase it again: if the error condition with which the
guest terminates is not uniquely identifiable but simply a "general
request", how are such conditions going to be debugged?

--
Regards/Gruss,
Boris.