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Subject: RE: [PATCH 1/6] mdev: class id support
Thread-Topic: [PATCH 1/6] mdev: class id support
Thread-Index: AQHVcg9tP+s325DFukm8x3s6EiJzu6c5v99w
Date:   Mon, 23 Sep 2019 21:02:38 +0000
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References: <20190923130331.29324-1-jasowang@redhat.com>
 <20190923130331.29324-2-jasowang@redhat.com>
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Hi Jason,


> -----Original Message-----
> From: Jason Wang <jasowang@redhat.com>
> Sent: Monday, September 23, 2019 8:03 AM
> To: kvm@vger.kernel.org; linux-s390@vger.kernel.org; linux-
> kernel@vger.kernel.org; dri-devel@lists.freedesktop.org; intel-
> gfx@lists.freedesktop.org; intel-gvt-dev@lists.freedesktop.org;
> kwankhede@nvidia.com; alex.williamson@redhat.com; mst@redhat.com;
> tiwei.bie@intel.com
> Cc: virtualization@lists.linux-foundation.org; netdev@vger.kernel.org;
> cohuck@redhat.com; maxime.coquelin@redhat.com;
> cunming.liang@intel.com; zhihong.wang@intel.com;
> rob.miller@broadcom.com; xiao.w.wang@intel.com;
> haotian.wang@sifive.com; zhenyuw@linux.intel.com; zhi.a.wang@intel.com;
> jani.nikula@linux.intel.com; joonas.lahtinen@linux.intel.com;
> rodrigo.vivi@intel.com; airlied@linux.ie; daniel@ffwll.ch;
> farman@linux.ibm.com; pasic@linux.ibm.com; sebott@linux.ibm.com;
> oberpar@linux.ibm.com; heiko.carstens@de.ibm.com; gor@linux.ibm.com;
> borntraeger@de.ibm.com; akrowiak@linux.ibm.com; freude@linux.ibm.com;
> lingshan.zhu@intel.com; Ido Shamay <idos@mellanox.com>;
> eperezma@redhat.com; lulu@redhat.com; Parav Pandit
> <parav@mellanox.com>; Jason Wang <jasowang@redhat.com>
> Subject: [PATCH 1/6] mdev: class id support
>=20
> Mdev bus only supports vfio driver right now, so it doesn't implement mat=
ch
> method. But in the future, we may add drivers other than vfio, one exampl=
e is
> virtio-mdev[1] driver. This means we need to add device class id support =
in bus
> match method to pair the mdev device and mdev driver correctly.
>=20
> So this patch adds id_table to mdev_driver and class_id for mdev parent w=
ith
> the match method for mdev bus.
>=20
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> ---
>  Documentation/driver-api/vfio-mediated-device.rst |  7 +++++--
>  drivers/gpu/drm/i915/gvt/kvmgt.c                  |  2 +-
>  drivers/s390/cio/vfio_ccw_ops.c                   |  2 +-
>  drivers/s390/crypto/vfio_ap_ops.c                 |  3 ++-
>  drivers/vfio/mdev/mdev_core.c                     | 14 ++++++++++++--
>  drivers/vfio/mdev/mdev_driver.c                   | 14 ++++++++++++++
>  drivers/vfio/mdev/mdev_private.h                  |  1 +
>  drivers/vfio/mdev/vfio_mdev.c                     |  6 ++++++
>  include/linux/mdev.h                              |  7 ++++++-
>  include/linux/mod_devicetable.h                   |  8 ++++++++
>  samples/vfio-mdev/mbochs.c                        |  2 +-
>  samples/vfio-mdev/mdpy.c                          |  2 +-
>  samples/vfio-mdev/mtty.c                          |  2 +-
>  13 files changed, 59 insertions(+), 11 deletions(-)
>=20
You additionally need modpost support for id table integration to modifo, m=
odprobe and other tools.
A small patch similar to this one [1] is needed.
Please include in the series.

[1] https://lore.kernel.org/patchwork/patch/1046991/