On Tue, Jul 28, 2020 at 12:24:03PM +0800, Zhu Lingshan wrote:
>
> +static void vhost_vdpa_setup_vq_irq(struct vhost_vdpa *v, int qid)
> +{
> + struct vhost_virtqueue *vq = &v->vqs[qid];
> + const struct vdpa_config_ops *ops = v->vdpa->config;
> + struct vdpa_device *vdpa = v->vdpa;
> + int ret, irq;
> +
> + spin_lock(&vq->call_ctx.ctx_lock);
> + irq = ops->get_vq_irq(vdpa, qid);
> + if (!vq->call_ctx.ctx || irq == -EINVAL) {
> + spin_unlock(&vq->call_ctx.ctx_lock);
> + return;
> + }
> +
If I understand correctly, this will cause these IRQs to be forwarded
directly to the VCPU, e.g. will be handled by the guest/qemu.
Does this mean that the host will not handle this interrupt? How does it
work in case on level triggered interrupts?
In the case of ConnectX, I need to execute some code to acknowledge the
interrupt.
Can you explain how this should be done?
