[PATCH RFC v4 00/16] qemu: towards virtio-1 host support

Cornelia Huck
2014-11-27T15:16:33Z

Yet another version of the virtio-1 support patches.

This one has seen some (very) light testing with the virtio-1 guest
support patches currently on vhost-next.

Changes from v3:

- Add support for FEATURES_OK. We refuse to set features after the
driver has set this in the status field, and we allow to fail
setting the status if the features are inconsistent.
- Add missing virtio-1 changes for virtio-net (header size and mac).
- Dropped setting the VERSION_1 bit for virtio-blk: There's still
some stuff missing.

For virtio-blk, we need to validate the feature bits if version 1 is
negotiated: some legacy features are not allowed in that case. I'm not
quite sure how to handle this, though. We could use the new
validate_features callback to verify that the driver negotiated a
sensible feature set, but that would require us to offer a superset
of legacy and version 1 bits, which feels wrong. Any ideas?

Cornelia Huck (13):
virtio: cull virtio_bus_set_vdev_features
virtio: support more feature bits
s390x/virtio-ccw: fix check for WRITE_FEAT
virtio: introduce legacy virtio devices
virtio: allow virtio-1 queue layout
dataplane: allow virtio-1 devices
s390x/virtio-ccw: support virtio-1 set_vq format
virtio: disallow late feature changes for virtio-1
virtio: allow to fail setting status
s390x/virtio-ccw: enable virtio 1.0
virtio-net: no writeable mac for virtio-1
virtio-net: support longer header
virtio-net: enable virtio 1.0

Thomas Huth (3):
linux-headers/virtio_config: Update with VIRTIO_F_VERSION_1
s390x/css: Add a callback for when subchannel gets disabled
s390x/virtio-ccw: add virtio set-revision call

hw/9pfs/virtio-9p-device.c | 7 +-
hw/block/dataplane/virtio-blk.c | 4 +-
hw/block/virtio-blk.c | 9 +-
hw/char/virtio-serial-bus.c | 9 +-
hw/net/virtio-net.c | 52 +++++--
hw/s390x/css.c | 12 ++
hw/s390x/css.h | 1 +
hw/s390x/s390-virtio-bus.c | 9 +-
hw/s390x/virtio-ccw.c | 206 +++++++++++++++++++------
hw/s390x/virtio-ccw.h | 7 +-
hw/scsi/vhost-scsi.c | 7 +-
hw/scsi/virtio-scsi-dataplane.c | 2 +-
hw/scsi/virtio-scsi.c | 10 +-
hw/virtio/Makefile.objs | 2 +-
hw/virtio/dataplane/Makefile.objs | 2 +-
hw/virtio/dataplane/vring.c | 96 ++++++------
hw/virtio/virtio-balloon.c | 8 +-
hw/virtio/virtio-bus.c | 23 +--
hw/virtio/virtio-mmio.c | 9 +-
hw/virtio/virtio-pci.c | 13 +-
hw/virtio/virtio-rng.c | 2 +-
hw/virtio/virtio.c | 88 +++++++++--
include/hw/virtio/dataplane/vring-accessors.h | 75 +++++++++
include/hw/virtio/dataplane/vring.h | 14 +-
include/hw/virtio/virtio-access.h | 4 +
include/hw/virtio/virtio-bus.h | 10 +-
include/hw/virtio/virtio.h | 39 ++++-
linux-headers/linux/virtio_config.h | 3 +
28 files changed, 523 insertions(+), 200 deletions(-)
create mode 100644 include/hw/virtio/dataplane/vring-accessors.h

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1.7.9.5