On Mon, 27 May 2019 at 19:54, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > > On 27/05/19 12:34, Wanpeng Li wrote: > > + rcu_read_lock(); > > + map = rcu_dereference(kvm->arch.apic_map); > > + target = map->phys_map[dest_id]->vcpu; > > + rcu_read_unlock(); > > + > > + kvm_vcpu_yield_to(target); > > This needs to check that map->phys_map[dest_id] is not NULL. Fixed in v2, thanks for the quick review. :) Regards, Wanpeng Li