[PATCH v3 00/19] vdpa: generalize vdpa simulator

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This series moves the network device simulator in a new module
(vdpa_sim_net) and leaves the generic functions in the vdpa_sim core
module, allowing the possibility to add new vDPA device simulators.

For now I removed the vdpa-blk simulator patches, since I'm still working
on them and debugging the iotlb issues.

Thanks to Max that started this work! I took his patches and extended a bit.

v1: https://lists.linuxfoundation.org/pipermail/virtualization/2020-November/050677.html
v2: https://lists.linuxfoundation.org/pipermail/virtualization/2020-November/051036.html

v3:
 - avoided to remove some headers with structures and functions directly
   used [Jason]
 - defined VHOST_IOTLB_UNLIMITED macro in vhost_iotlb.h [Jason]
 - added set_config callback in vdpasim_dev_attr [Jason]
 - cleared notify during reset [Jason]

Max Gurtovoy (2):
  vdpa_sim: remove hard-coded virtq count
  vdpa: split vdpasim to core and net modules

Stefano Garzarella (17):
  vdpa: remove unnecessary 'default n' in Kconfig entries
  vdpa_sim: remove unnecessary headers inclusion
  vhost/iotlb: add VHOST_IOTLB_UNLIMITED macro
  vdpa_sim: remove the limit of IOTLB entries
  vdpa_sim: rename vdpasim_config_ops variables
  vdpa_sim: add struct vdpasim_dev_attr for device attributes
  vdpa_sim: add device id field in vdpasim_dev_attr
  vdpa_sim: add supported_features field in vdpasim_dev_attr
  vdpa_sim: add work_fn in vdpasim_dev_attr
  vdpa_sim: store parsed MAC address in a buffer
  vdpa_sim: make 'config' generic and usable for any device type
  vdpa_sim: add get_config callback in vdpasim_dev_attr
  vdpa_sim: add set_config callback in vdpasim_dev_attr
  vdpa_sim: set vringh notify callback
  vdpa_sim: use kvmalloc to allocate vdpasim->buffer
  vdpa_sim: make vdpasim->buffer size configurable
  vdpa_sim: split vdpasim_virtqueue's iov field in out_iov and in_iov

 drivers/vdpa/vdpa_sim/vdpa_sim.h     | 105 ++++++++++
 include/linux/vhost_iotlb.h          |   2 +
 drivers/vdpa/vdpa_sim/vdpa_sim.c     | 301 +++++++--------------------
 drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 171 +++++++++++++++
 drivers/vhost/iotlb.c                |   3 +-
 drivers/vdpa/Kconfig                 |  16 +-
 drivers/vdpa/vdpa_sim/Makefile       |   1 +
 7 files changed, 368 insertions(+), 231 deletions(-)
 create mode 100644 drivers/vdpa/vdpa_sim/vdpa_sim.h
 create mode 100644 drivers/vdpa/vdpa_sim/vdpa_sim_net.c

-- 
2.26.2

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