[PATCH 18.05-RC3 0/2] net/virtio-user: support memory hotplug

[Xiao Wang <xiao.w.wang@intel.com>]

This patch set has dependency on http://dpdk.org/dev/patchwork/patch/39283/
("mem: add argument to mem event callbacks").

When memory is hot-added or hot-removed, the virtio-user driver has to
notify the vhost-user backend with sending a VHOST_USER_SET_MEM_TABLE
request with the new memory map as payload. This patch set registers
a mem_event callback to help on that.

Considering some older vhost-user implementation doesn't support runtime
memory table change, e.g. DPDK 16.11, we have to pause queues explicitly
in the callback routine:
 1. disable all the active queues
 2. update memory table to vhost
 3. resume all the previous active queues

Maxime Coquelin (2):
  vhost: retranslate vring addr when memory table changes
  net/virtio-user: support memory hotplug

 drivers/net/virtio/virtio_user/virtio_user_dev.c | 53 +++++++++++++++++++++++-
 drivers/net/virtio/virtio_user/virtio_user_dev.h |  2 +
 lib/librte_vhost/vhost_user.c                    | 24 ++++++++++-
 3 files changed, 76 insertions(+), 3 deletions(-)

-- 
2.15.1