On Sat, Aug 07, 2021, Kai Huang wrote: > So could we have your final suggestion? :) Try the kvm_mmu_page_role.private approach. So long as it doesn't end up splattering code everywhere, I think that's more aligned with how KVM generally wants to treat the shared bit. In the changelog for this patch, make it very clear that ensuring different aliases get different shadow page (if necessary) is the responsiblity of each individual feature that leverages stolen gfn bits.
