[PATCH net-next] vhost_net: disable zerocopy by default

David Miller
Mon, 17 Jun 2019 20:58:21 -0000

From: Jason Wang <jasowang at redhat.com>
Date: Mon, 17 Jun 2019 05:20:54 -0400

> Vhost_net was known to suffer from HOL[1] issues which is not easy to
> fix. Several downstream disable the feature by default. What's more,
> the datapath was split and datacopy path got the support of batching
> and XDP support recently which makes it faster than zerocopy part for
> small packets transmission.
>
> It looks to me that disable zerocopy by default is more
> appropriate. It cold be enabled by default again in the future if we
> fix the above issues.
>
> [1] https://patchwork.kernel.org/patch/3787671/
>
> Signed-off-by: Jason Wang <jasowang at redhat.com>

Applied, thanks Jason.