[Qemu-devel] [PATCH v4 0/6] virtio/vhost cross-endian cleanup

[Greg Kurz]

This series brings some improvements to the cross-endian support in the
virtio and vhost code:
- use qemu_set_vnet_be() and qemu_set_vnet_le() directly from virtio-net,
  so that backend cross-endian capabilities benefit to both emulated and
  vhost accelerated devices
- optimize virtio_access_is_big_endian() for little-endian targets
- various cleanups

This v4 is a respin of the v3, taking into account the following fix:

commit cf0a628f6e81bfc9b7a944fa0b80c3594836df56
Author: Laurent Vivier <address@hidden>
Date:   Wed Jan 13 20:26:25 2016 +0100

    net: set endianness on all backend devices

It impacts patches 1 and 2, that had already been reviewed.

Laurent, Cornelia,

Could you please ack/nack the changes ?

The series is based on Michael Tsirkin's tree:

git://git.kernel.org/pub/scm/virt/kvm/mst/qemu.git pci

Thanks.

--
Greg

---

Greg Kurz (6):
      virtio-net: use the backend cross-endian capabilities
      vhost-net: revert support of cross-endian vnet headers
      virtio: move cross-endian helper to vhost
      vhost: move virtio 1.0 check to cross-endian helper
      vhost: simplify vhost_needs_vring_endian()
      virtio: optimize virtio_access_is_big_endian() for little-endian targets


 hw/net/vhost_net.c                |   41 +++-------------------
 hw/net/virtio-net.c               |   68 ++++++++++++++++++++++++++++++++++++-
 hw/virtio/vhost.c                 |   27 +++++++++++++--
 include/hw/virtio/virtio-access.h |   28 ++-------------
 include/hw/virtio/virtio-net.h    |    1 +
 5 files changed, 98 insertions(+), 67 deletions(-)