[RFC,0/2] Mdev: support mutiple kinds of devices

Message

Jason Wang Sept. 12, 2019, 9:40 a.m. UTC

Hi all:

During the development of virtio-mdev[1]. I find that mdev needs to be
extended to support devices other than vfio mdev device. So this
series tries to extend the mdev to be able to differ from different
devices by:

- device id and matching for mdev bus
- device speicfic callbacks and move vfio callbacks there

Sent for early reivew, compile test only!

Thanks

[1] https://lkml.org/lkml/2019/9/10/135

Jason Wang (2):
  mdev: device id support
  mdev: introduce device specific ops

 drivers/gpu/drm/i915/gvt/kvmgt.c  | 16 ++++---
 drivers/s390/cio/vfio_ccw_ops.c   | 16 ++++---
 drivers/s390/crypto/vfio_ap_ops.c | 13 ++++--
 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     | 36 ++++++++++-----
 include/linux/mdev.h              | 76 +++++++++++++++++++------------
 include/linux/mod_devicetable.h   |  6 +++
 samples/vfio-mdev/mbochs.c        | 18 +++++---
 samples/vfio-mdev/mdpy.c          | 18 +++++---
 samples/vfio-mdev/mtty.c          | 16 ++++---
 12 files changed, 163 insertions(+), 81 deletions(-)

Comments

Alex Williamson Sept. 17, 2019, 5:31 p.m. UTC | #1

[cc +Parav]

On Thu, 12 Sep 2019 17:40:10 +0800
Jason Wang <[e-mail]> wrote:

> Hi all:
> 
> During the development of virtio-mdev[1]. I find that mdev needs to be
> extended to support devices other than vfio mdev device. So this
> series tries to extend the mdev to be able to differ from different
> devices by:
> 
> - device id and matching for mdev bus
> - device speicfic callbacks and move vfio callbacks there
> 
> Sent for early reivew, compile test only!
> 
> Thanks
> 
> [1] https://lkml.org/lkml/2019/9/10/135

I expect Parav must have something similar in the works for their
in-kernel networking mdev support.  Link to discussion so far:

https://lore.kernel.org/kvm/[e-mail]/T/#t

Thanks,
Alex


> Jason Wang (2):
>   mdev: device id support
>   mdev: introduce device specific ops
> 
>  drivers/gpu/drm/i915/gvt/kvmgt.c  | 16 ++++---
>  drivers/s390/cio/vfio_ccw_ops.c   | 16 ++++---
>  drivers/s390/crypto/vfio_ap_ops.c | 13 ++++--
>  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     | 36 ++++++++++-----
>  include/linux/mdev.h              | 76 +++++++++++++++++++------------
>  include/linux/mod_devicetable.h   |  6 +++
>  samples/vfio-mdev/mbochs.c        | 18 +++++---
>  samples/vfio-mdev/mdpy.c          | 18 +++++---
>  samples/vfio-mdev/mtty.c          | 16 ++++---
>  12 files changed, 163 insertions(+), 81 deletions(-)
>