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Re: [Qemu-devel] [PATCH v6 18/23] sev: emit the SEV_MEASUREMENT event

From: Daniel P . Berrangé
Subject: Re: [Qemu-devel] [PATCH v6 18/23] sev: emit the SEV_MEASUREMENT event
Date: Thu, 8 Feb 2018 16:22:33 +0000
User-agent: Mutt/1.9.1 (2017-09-22)

On Thu, Feb 08, 2018 at 10:17:28AM -0600, Brijesh Singh wrote:
> Anyway, the main issue is event emitted before "qmp_capabilities" are
> dropped silently , see [1] . In our case, the measurement event is emitted
> during the machine creation time, libvirt was still waiting to reconnect
> the monitor when event was emitted hence libvirt never gets the event.
> Because of this, I am not able to see any strong reason to emit the event.
> Do you see any issue with libvirt issuing a  'query-sev-launch-measure' to
> get the measurement on reconnect ?

Hmm, yes, I see so there can be a race between SEV emitting the event and
libvirtd making the initial monitor connection. In that case, we definitely
to have a QMP command to let libvirt explicitly query it. 

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