> 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? Doctor Doctor it hurts when I do this.... Migration tends to only work between HV's that are relatively homogeneous, that's nothing new... folks who run clouds or bigger pools know this obviously.
