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On reporting CPU flags that provide mitiation (to CVE flaws) as Nova 'traits'

> Okay, so I take it that all the relevant low-level CPU flags (including
> things like SSBD, et al) as proposed here[2][3] can be added to
> 'os-traits'.

Yes, subject to already-noted namespacing and spelling issues.

> And tools _other_ than Nova can consume, if need be.

Nova should consume by having the driver expose the flags as
appropriate. And switching on flaggage in domain xml if that's a thing.
But that's all. No efforts to special-case scheduling decisions etc.