Re: [PATCH 2/3] KVM: X86: Implement PV sched yield hypercall

From: Paolo Bonzini
Date: Mon May 27 2019 - 07:57:17 EST


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.

Paolo