Thread (100 messages) 100 messages, 8 authors, 2021-07-05

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

From: Borislav Petkov <bp@alien8.de>
Date: 2021-06-16 13:02:52
Also in: kvm, linux-crypto, linux-efi, linux-mm, lkml, platform-driver-x86

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.

https://people.kernel.org/tglx/notes-about-netiquette
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