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
