On 14/10/19 14:50, speck for Andrew Cooper wrote:
> Avoiding sharing the EPT and IOMMU tables does avoid the problem, but
> that is to be expected as the shattering activity now has no interaction
> with the IOMMU.
> 
> Has anyone experimented with the above scenario, and if so, how has
> testing gone?

Nope, sorry.  KVM and VFIO do not share page tables.

Paolo