Messages in this thread | | | Date | Wed, 16 Jun 2021 14:03:05 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH Part1 RFC v3 11/22] x86/sev: Add helper for validating pages in early enc attribute changes |
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On Wed, Jun 16, 2021 at 06:00:09AM -0500, Brijesh Singh wrote: > I am trying to be consistent with previous VMGEXIT implementations. If > the command itself failed then use the command specific error code to > tell hypervisor why we terminated but if the hypervisor violated the > GHCB specification then use the "general request termination".
I feel like we're running in circles here: I ask about debuggability and telling the user what exactly failed and you're giving me some explanation about what the error codes mean. I can see what they mean.
So let me try again:
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?
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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