Tested-by: Yinan Wang <yinan.w...@intel.com>
> -----Original Message-----
> From: Maxime Coquelin <maxime.coque...@redhat.com>
> Sent: 2020年2月18日 22:35
> To: dev@dpdk.org; o...@valinux.co.jp; Wang, Yinan <yinan.w...@intel.com>;
> Bie, Tiwei <tiwei....@intel.com>; amore...@redhat.com
> Cc: Maxime Coquelin <maxime.coque...@redhat.com>
> Subject: [PATCH 2/2] net/vhost: prevent multiple setup on reconfig
>
> Ethdev's .dev_configure callback can be called multiple time during a device
> life-time, but Vhost makes the wrong assumption that it is not the case and
> try
> to setup again the device on reconfiguration.
>
> This patch ensures the device hasn't been already setup before proceeding.
>
> Fixes: 3d01b759d267 ("net/vhost: delay driver setup")
>
> Reported-by: Yinan Wang <yinan.w...@intel.com>
> Signed-off-by: Maxime Coquelin <maxime.coque...@redhat.com>
> ---
> drivers/net/vhost/rte_eth_vhost.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/net/vhost/rte_eth_vhost.c
> b/drivers/net/vhost/rte_eth_vhost.c
> index c0056bc8bf..c4643da120 100644
> --- a/drivers/net/vhost/rte_eth_vhost.c
> +++ b/drivers/net/vhost/rte_eth_vhost.c
> @@ -876,6 +876,11 @@ vhost_driver_setup(struct rte_eth_dev *eth_dev)
> unsigned int numa_node = eth_dev->device->numa_node;
> const char *name = eth_dev->device->name;
>
> + /* Don't try to setup again if it has already been done. */
> + list = find_internal_resource(internal->iface_name);
> + if (list)
> + return 0;
> +
> list = rte_zmalloc_socket(name, sizeof(*list), 0, numa_node);
> if (list == NULL)
> return -1;
> --
> 2.24.1
