On 6/16/2021 9:36 AM, Brijesh Singh wrote: > > > On 6/16/2021 8:10 AM, Brijesh Singh wrote: >> >> On 6/16/21 8:02 AM, Borislav Petkov wrote: >>> 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? >>> I thought I said it somewhere in our previous conversation, I would look >> at the KVM trace log, each vmgexit entry and exit are logged. The log >> contains full GHCB MSR value, and in it you can see both the request and >> response code and decode the failure reason. >> > > I now realized that in this case we may not have the trace's. It's > a production environment and my development machine :(. I am mean to say *not* my development machine
