On Mon, 19 Feb 2018 23:42:24 +0000, "Van De Ven, Arjan" said:

> the guest is not the problem; guests obviously will already honor if Enhanced
> IBRS is enumerated. The problem is mixed migration pools where the hypervisor
> may need to decide to not pass this enumeration through to the guest.

For bonus points:  What should happen to a VM that is live migrated from one
hypervisor to another, and the hypervisors have different IBRS support?

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