linux-kernel - [RFC PATCH 0/6] virtio_test: add support for vhost-vdpa

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Message-Id: <20220704171701.127665-1-sgarzare@redhat.com>
Date:   Mon,  4 Jul 2022 19:16:55 +0200
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     virtualization@...ts.linux-foundation.org
Cc:     Jason Wang <jasowang@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        linux-kernel@...r.kernel.org,
        Eugenio Pérez <eperezma@...hat.com>,
        Stefano Garzarella <sgarzare@...hat.com>
Subject: [RFC PATCH 0/6] virtio_test: add support for vhost-vdpa

The first 3 patches fix various problems I have encountered with
virtio_test (they may go without this series, but I included to allow you
to test the series).

Patch 4 is in preparation of patch 5, moving the feature negotiation when
we initialize the device.

Patch 5 add the support of vhost-vdpa in virtio_test

Patch 6 add vdpa_test.ko based on vdpa_sim_test.c, so we can reuse most of
the code coming from the vdpa_sim framework.

I tested in this way:

  $ modprobe vdpa_sim
  $ modprobe vhost-vdpa

  # load the vdpasim_test device
  $ insmod vdpa_test.ko

  # create a new vdpasim_test device
  $ vdpa dev add mgmtdev vdpasim_test name dev0

  # run the test using the /dev/vhost-vdpa-0 device
  $ ./virtio_test --vdpa /dev/vhost-vdpa-0
  spurious wakeups: 0x0 started=0x100000 completed=0x100000

Comments and suggestions are welcome :-)

Thanks,
Stefano

Stefano Garzarella (6):
  tools/virtio: fix build
  vhost_test: add $(srctree) on the included path
  virtio_test: call __virtio_unbreak_device
  tools/virtio: move feature negotiation in vdev_info_init()
  virtio_test: support vhost-vdpa device
  vdpasim: add vdpa_sim_test module

 tools/virtio/linux/kernel.h           |   2 +-
 tools/virtio/linux/virtio.h           |   2 +
 tools/virtio/linux/vringh.h           |   1 +
 drivers/vdpa/vdpa_sim/vdpa_sim_test.c | 203 ++++++++++++++++++++++++++
 tools/virtio/vdpa_test/vdpa_test.c    |   1 +
 tools/virtio/virtio_test.c            | 131 ++++++++++++++---
 tools/virtio/Makefile                 |  32 +++-
 tools/virtio/vdpa_test/Makefile       |   3 +
 tools/virtio/vhost_test/Makefile      |   2 +-
 9 files changed, 350 insertions(+), 27 deletions(-)
 create mode 100644 drivers/vdpa/vdpa_sim/vdpa_sim_test.c
 create mode 100644 tools/virtio/vdpa_test/vdpa_test.c
 create mode 100644 tools/virtio/vdpa_test/Makefile

-- 
2.36.1