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

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Message-ID: <CAJs=3_A6hLcTUj_KCG=n+DH9TA0-BaJ0m_CsXgObWjraE0cbeA@mail.gmail.com>
Date:   Mon, 29 Aug 2022 12:14:54 +0300
From:   Alvaro Karsz <alvaro.karsz@...id-run.com>
To:     Xuan Zhuo <xuanzhuo@...ux.alibaba.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

> 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.

Alvaro