Re: Re: [PATCH v8 09/10] vduse: Introduce VDUSE - vDPA Device in Userspace

From: Yongji Xie
Date: Tue Jun 22 2021 - 04:15:10 EST


On Tue, Jun 22, 2021 at 3:50 PM Jason Wang <jasowang@xxxxxxxxxx> wrote:
>
>
> 在 2021/6/22 下午3:22, Yongji Xie 写道:
> >> We need fix a way to propagate the error to the userspace.
> >>
> >> E.g if we want to stop the deivce, we will delay the status reset until
> >> we get respose from the userspace?
> >>
> > I didn't get how to delay the status reset. And should it be a DoS
> > that we want to fix if the userspace doesn't give a response forever?
>
>
> You're right. So let's make set_status() can fail first, then propagate
> its failure via VHOST_VDPA_SET_STATUS.
>

OK. So we only need to propagate the failure in the vhost-vdpa case, right?

Thanks,
Yongji