On 28/06/2017 16:09, Wanpeng Li wrote: >> Yes, this was my question essentially. I would still migrate >> nested_apf_token (as part of nested virt state), and then clear it in >> KVM when doing the async-pf broadcast. > Do you mean I should save nested_apf_token by GET_VCPU_EVENTS and > restore it by SET_VCPU_EVENTS? I utilize the place of "u8 pad" in > kvm_vcpu_events to hold nested_apf, however nested_apf_token is > unsigned long. If for now we can leave out the GET/SET_VCPU_EVENTS changes, that would be best. nested_apf and nested_apf_token should be migrated together with the rest of the nested virt state. Paolo