netdev - Re: [PATCH vhost v10 10/10] virtio

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Message-ID: <1685931044.5893385-2-xuanzhuo@linux.alibaba.com>
Date: Mon, 5 Jun 2023 10:10:44 +0800
From: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: virtualization@...ts.linux-foundation.org,
 "Michael S. Tsirkin" <mst@...hat.com>,
 Jason Wang <jasowang@...hat.com>,
 "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>,
 Paolo Abeni <pabeni@...hat.com>,
 Alexei Starovoitov <ast@...nel.org>,
 Daniel Borkmann <daniel@...earbox.net>,
 Jesper Dangaard Brouer <hawk@...nel.org>,
 John  Fastabend <john.fastabend@...il.com>,
 netdev@...r.kernel.org,
 bpf@...r.kernel.org
Subject: Re: [PATCH vhost v10 10/10] virtio_net: support dma premapped

On Fri, 2 Jun 2023 23:31:52 -0700, Jakub Kicinski <kuba@...nel.org> wrote:
> On Fri,  2 Jun 2023 17:22:06 +0800 Xuan Zhuo wrote:
> >  drivers/net/virtio_net.c | 163 +++++++++++++++++++++++++++++++++------
>
> ack for this going via the vhost tree, FWIW, but you'll potentially
> need to wait for the merge window to move forward with the actual
> af xdp patches, in this case.

My current plan is to let virtio support premapped dma first, and then implement
virtio-net to support af-xdp zerocopy.

This will indeed involve two branches. But most of the implementations in this
patch are virtio code, so I think it would be more appropriate to commit to
vhost. Do you have any good ideas?

Thanks.