linux-kernel - [PATCH v4 00/18] vdpa: generalize vdpa simulator

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Date:   Tue, 15 Dec 2020 15:42:38 +0100
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     virtualization@...ts.linux-foundation.org
Cc:     Oren Duer <oren@...dia.com>, Laurent Vivier <lvivier@...hat.com>,
        Max Gurtovoy <mgurtovoy@...dia.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Shahaf Shuler <shahafs@...dia.com>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>, Eli Cohen <elic@...dia.com>,
        linux-kernel@...r.kernel.org,
        Stefano Garzarella <sgarzare@...hat.com>,
        Jason Wang <jasowang@...hat.com>
Subject: [PATCH v4 00/18] vdpa: generalize vdpa simulator

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: https://lists.linuxfoundation.org/pipermail/virtualization/2020-December/051195.html

v4:
 - rebased on Linux v5.10
 - checked better which headers are not directly used [Randy]
 - removed patches that set unlimited iotlb and added a module
   parameter [Jason]
 - explained in the commit message that .get_config stuff moving
   is safe [Jason]
 - fixed typo in Kconfig (s/loop/loops) [Randy]

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

Stefano Garzarella (16):
  vdpa: remove unnecessary 'default n' in Kconfig entries
  vdpa_sim: remove unnecessary headers inclusion
  vdpa_sim: make IOTLB entries limit configurable
  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 ++++++++++
 drivers/vdpa/vdpa_sim/vdpa_sim.c     | 298 ++++++++-------------------
 drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 177 ++++++++++++++++
 drivers/vdpa/Kconfig                 |  16 +-
 drivers/vdpa/vdpa_sim/Makefile       |   1 +
 5 files changed, 374 insertions(+), 223 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