Re: [PATCH V3 6/9] virtio-ccw: implement synchronize_cbs()

[Jason Wang <jasowang@redhat.com>]

在 2022/4/26 10:50, Halil Pasic 写道:
>>>> +static void virtio_ccw_synchronize_cbs(struct virtio_device *vdev)
>>>> +{
>>>> +	struct virtio_ccw_device *vcdev = to_vc_device(vdev);
>>>> +	struct airq_info *info = vcdev->airq_info;
>>>> +
>>>> +	/*
>>>> +	 * Synchronize with the vring_interrupt() called by
>>>> +	 * virtio_ccw_int_handler().
>>>> +	 */
>>>> +	spin_lock(&vcdev->irq_lock);
>>>> +	spin_unlock(&vcdev->irq_lock);
>>>> +
>>>> +	if (info) {
>>>> +		/*
>>>> +		 * Synchronize with the vring_interrupt() with airq indicator
>>>> +		 */
>>>> +		write_lock(&info->lock);
>>>> +		write_unlock(&info->lock);
>>>> +	}
>> I think we can make this an either/or operation (devices will either use
>> classic interrupts or adapter interrupts)?
> Right, for virtqueue notifications. I second Connie's motion!


Will do this.

Thanks


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