Adding my colleague Yasufumi and Hiroyuki as CC. We are waiting valuable advice from you.
Thanks in advance, Hideyuki Yamashita NTT TechnoCross > > Dear Thomas and all, > > I hope you all get safely back home after DPDK summit. > (When I get back Japan, it is chilling. (start of winter)) > > On DPDK 18.11.0, we tried to remove vhost device by using > rte_eal_hotplug_remove(). > However, following syslog message is printed. > “EAL: Error: Invalid memory” > > At DPDK summit San Jose, we had chance to ask Thomas how to handle the error > message, and he gave us following advice: > Replace “rte_eal_hotplug_add()” to “rte_dev_probe(devargs)” and > “rte_eal_hotplug_remove()” to “rte_eth_dev_close() and > rte_dev_remove(rte_dev)” > > We tested above changes, but the result is the same (i.e., same error message > is printed). > The debug log message says: > --- > [primary] > VHOST_CONFIG: vhost-user server: socket created, fd: 17 > VHOST_CONFIG: bind to /tmp/sock0 > EAL: Error: Invalid memory > VHOST_CONFIG: vhost-user server: socket created, fd: 17 > VHOST_CONFIG: bind to /tmp/sock0 > > [secondary] > APP: devargs=eth_vhost0,iface=/tmp/sock0,queues=1 > EAL: request: eal_dev_mp_request > EAL: msg: eal_dev_mp_request > EAL: request: bus_vdev_mp > EAL: msg: bus_vdev_mp > EAL: msg: bus_vdev_mp > EAL: reply: eal_dev_mp_request > EAL: msg: eal_dev_mp_request > rte_eth_promiscuous_disable: Function not supported > rte_eth_allmulticast_disable: Function not supported > APP: To Server: add > EAL: request: eal_dev_mp_request > EAL: msg: eal_dev_mp_request > EAL: reply: eal_dev_mp_request > EAL: msg: eal_dev_mp_request > APP: To Server: del > APP: devargs=eth_vhost0,iface=/tmp/sock0,queues=1 > EAL: request: eal_dev_mp_request > EAL: msg: eal_dev_mp_request > EAL: request: bus_vdev_mp > EAL: msg: bus_vdev_mp > EAL: msg: bus_vdev_mp > EAL: reply: eal_dev_mp_request > EAL: msg: eal_dev_mp_request > rte_eth_promiscuous_disable: Function not supported > rte_eth_allmulticast_disable: Function not supported > APP: To Server: add > --- > > We would like to ask: > 1) Is the message “EAL: Error: Invalid memory” ignorable or not? There is > no obstacle except this message to re-add the vhost device. > 2) Which is the better(best?) way to add/del vhost device > “rte_eal_hotplug_add/remove()” or the way Thomas suggested? > > Thanks in advance and have a nice day. > > BR, > Hideyuki Yamashita > NTT TechnoCross
