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SubjectRe: [RFC PATCH 0/6] virtio_test: add support for vhost-vdpa
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在 2022/7/5 01:16, Stefano Garzarella 写道:
> 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


I wonder what's the benefit of using a dedicated test device other than
networking? (already a loopback device anyhow).

Thanks


>
> # 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
>

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