[Qemu-devel] [PATCH 0/4] vhost-user: protocol updates

[Michael S. Tsirkin]

This patchset sets the stage for extending the vhost user
protocol, with full backwards compatibility.

The approach is to negotiate feature bits queried and
acknowledged during device setup.

For now, there's no new functionality: two new messages
are added that will allow negotiating new messages
required for functionality such as MQ and migration.

For now, I used the feature bit 30 to signal support for these new messages,
and we now have 64 more bits to play.

The patches can be found in my tree, branch vhost-user.

Only patch 1 is intended for 2.4.

Posting early so people working on extensions such as
migration can review this - but please note
the protocol is not set in stone yet.

Michael S. Tsirkin (4):
  Revert "vhost-user: add multi queue support"
  vhost-user: refactor ioctl translation
  vhost-user: add protocol feature negotiation
  vhost-user: unit test for new messages

 qapi-schema.json          |   6 +-
 include/hw/virtio/vhost.h |   1 +
 hw/net/vhost_net.c        |   5 +-
 hw/virtio/vhost-user.c    | 150 ++++++++++++++++++++++++++++++----------------
 net/vhost-user.c          |  37 ++++--------
 tests/vhost-user-test.c   |  19 ++++++
 docs/specs/vhost-user.txt |  40 +++++++++++--
 qemu-options.hx           |   5 +-
 8 files changed, 174 insertions(+), 89 deletions(-)

-- 
MST