netdev - Re: [PATCH net-next v4] net: virtio_net: notifications coalescing support

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Date:   Mon, 29 Aug 2022 17:18:03 +0800
From:   Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To:     Alvaro Karsz <alvaro.karsz@...id-run.com>
Cc:     "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v4] net: virtio_net: notifications coalescing support

On Mon, 29 Aug 2022 12:14:54 +0300, Alvaro Karsz <alvaro.karsz@...id-run.com> wrote:
> > We are very interested in this, and I would like to know what other plans you
> > have in the future? Such as qemu, vhost-uer, vhost-net. And further development
> > work in the kernel.
>
> Hi Xuan,
> I'm actually working on a VirtIO compatible DPU, no virtualization at
> all, so I wasn't planning on implementing it in qemu or vhost.
>
> I have some more development plans for the VirtIO spec and for the
> linux kernel in virtio-net (and maybe virtio-blk).
> Adding a timeout to the control vq is one example (needed with
> physical VirtIO devices).
>
> I would of course help to implement the notifications coalescing
> feature in qemu/vhost if you need.


We'll do some implementation of net dim based on your previous work. In the
meantime, if you don't implement coalescing on backends like qemu, we might
do some work on that.

Thanks.


>
> Alvaro