[RFC v2 0/4] adding mdev bus and vfio support

From: Jike Song <jike.song@intel.com>
To: alex.williamson@redhat.com, kwankhede@nvidia.com, cjia@nvidia.com
Cc: kevin.tian@intel.com, guangrong.xiao@linux.intel.com,
	kvm@vger.kernel.org, qemu-devel@nongnu.org,
	zhenyuw@linux.intel.com, jike.song@intel.com,
	zhiyuan.lv@intel.com, pbonzini@redhat.com,
	bjsdjshi@linux.vnet.ibm.com, kraxel@redhat.com
Subject: [RFC v2 0/4] adding mdev bus and vfio support
Date: Fri,  2 Sep 2016 16:16:08 +0800	[thread overview]
Message-ID: <1472804172-25542-1-git-send-email-jike.song@intel.com> (raw)

This patchset is based on NVidia's "Add Mediated device support" series, version 6:

	http://www.spinics.net/lists/kvm/msg136472.html

Key Changes from Nvidia v6:

	- Introduced an independent struct device to host device, thereby
	  formed a physical-host-mdev hierarchy, and highly reused Linux
	  driver core support;

	- Added online/offline to mdev_bus_type, leveraging the 'online'
	  attr support from Linux driver core;

	- Removed mdev_class and other unecessary stuff;

	/*
	 * Given the changes above, the code volume of mdev core driver
	 * dramatically reduced by ~50%.
	 */

	- Interfaces between vfio_mdev and vendor driver are high-level,
	  e.g. ioctl instead of get_irq_info/set_irq_info and reset,
	  start/stop became mdev oriented, etc.;

	/*
	 * Given the changes above, the code volume of mdev core driver
	 * dramatically reduced by ~64%.
	 */

Test

	- Tested with KVMGT

TODO

	- Re-implement the attribute group of host device as long as the
	  sysfs hierarchy in discussion gets finalized;

	- Move common routines from current vfio-pci into a higher location,
	  export them for various VFIO bus drivers and/or mdev vendor drivers;

	- Add implementation examples for vendor drivers to Documentation;

	- Refine IOMMU changes

Jike Song (2):
  Mediated device Core driver
  vfio: VFIO bus driver for MDEV devices

Kirti Wankhede (2):
  vfio iommu: Add support for mediated devices
  docs: Add Documentation for Mediated devices

 Documentation/vfio-mediated-device.txt | 203 ++++++++++++++
 drivers/vfio/Kconfig                   |   1 +
 drivers/vfio/Makefile                  |   1 +
 drivers/vfio/mdev/Kconfig              |  18 ++
 drivers/vfio/mdev/Makefile             |   5 +
 drivers/vfio/mdev/mdev_core.c          | 250 +++++++++++++++++
 drivers/vfio/mdev/mdev_driver.c        | 155 ++++++++++
 drivers/vfio/mdev/mdev_private.h       |  29 ++
 drivers/vfio/mdev/mdev_sysfs.c         | 155 ++++++++++
 drivers/vfio/mdev/vfio_mdev.c          | 187 ++++++++++++
 drivers/vfio/vfio.c                    |  82 ++++++
 drivers/vfio/vfio_iommu_type1.c        | 499 +++++++++++++++++++++++++++++----
 include/linux/mdev.h                   | 159 +++++++++++
 include/linux/vfio.h                   |  13 +-
 14 files changed, 1709 insertions(+), 48 deletions(-)
 create mode 100644 Documentation/vfio-mediated-device.txt
 create mode 100644 drivers/vfio/mdev/Kconfig
 create mode 100644 drivers/vfio/mdev/Makefile
 create mode 100644 drivers/vfio/mdev/mdev_core.c
 create mode 100644 drivers/vfio/mdev/mdev_driver.c
 create mode 100644 drivers/vfio/mdev/mdev_private.h
 create mode 100644 drivers/vfio/mdev/mdev_sysfs.c
 create mode 100644 drivers/vfio/mdev/vfio_mdev.c
 create mode 100644 include/linux/mdev.h

-- 
1.9.1