Re: [PATCH v5 2/2] kvm: x86: hyperv: guest->host event signaling via eventfd

[Paolo Bonzini <pbonzini@xxxxxxxxxx>]

On 12/12/2017 17:07, Roman Kagan wrote:
> +		idx = srcu_read_lock(&vcpu->kvm->srcu);
> +		ret = kvm_vcpu_read_guest(vcpu, gpa, &param, sizeof(param));
> +		srcu_read_unlock(&vcpu->kvm->srcu, idx);
> +

The lock/unlock is not needed (vcpu_enter_guest -> vmx_handle_exit ->
handle_vmcall -> kvm_emulate_hypercall -> kvm_hv_hypercall ->
kvm_hvcall_signal_event).  I'll drop it.

Thanks,