[GIT PULL] VFIO updates for v6.8-rc1

[Alex Williamson <alex.williamson@redhat.com>]

Hi Linus,

The following changes since commit 33cc938e65a98f1d29d0a18403dbbee050dcad9a:

  Linux 6.7-rc4 (2023-12-03 18:52:56 +0900)

are available in the Git repository at:

  https://github.com/awilliam/linux-vfio.git tags/vfio-v6.8-rc1

for you to fetch changes up to 78f70c02bdbccb5e9b0b0c728185d4aeb7044ace:

  vfio/virtio: fix virtio-pci dependency (2024-01-10 15:10:41 -0700)

----------------------------------------------------------------
VFIO updates for v6.8-rc1

 - Add debugfs support, initially used for reporting device migration
   state. (Longfang Liu)

 - Fixes and support for migration dirty tracking across multiple IOVA
   regions in the pds-vfio-pci driver. (Brett Creeley)

 - Improved IOMMU allocation accounting visibility. (Pasha Tatashin)

 - Virtio infrastructure and a new virtio-vfio-pci variant driver, which
   provides emulation of a legacy virtio interfaces on modern virtio
   hardware for virtio-net VF devices where the PF driver exposes
   support for legacy admin queues, ie. an emulated IO BAR on an SR-IOV
   VF to provide driver ABI compatibility to legacy devices.
   (Yishai Hadas & Feng Liu)

 - Migration fixes for the hisi-acc-vfio-pci variant driver.
   (Shameer Kolothum)

 - Kconfig dependency fix for new virtio-vfio-pci variant driver.
   (Arnd Bergmann)

----------------------------------------------------------------
Alex Williamson (2):
      Merge branches 'v6.8/vfio/debugfs', 'v6.8/vfio/pds' and 'v6.8/vfio/type1-account' into v6.8/vfio/next
      Merge branch 'v6.8/vfio/virtio' into v6.8/vfio/next

Arnd Bergmann (1):
      vfio/virtio: fix virtio-pci dependency

Brett Creeley (6):
      vfio/pds: Fix calculations in pds_vfio_dirty_sync
      vfio/pds: Only use a single SGL for both seq and ack
      vfio/pds: Move and rename region specific info
      vfio/pds: Pass region info to relevant functions
      vfio/pds: Move seq/ack bitmaps into region struct
      vfio/pds: Add multi-region support

Feng Liu (4):
      virtio: Define feature bit for administration virtqueue
      virtio-pci: Introduce admin virtqueue
      virtio-pci: Introduce admin command sending function
      virtio-pci: Introduce admin commands

Longfang Liu (3):
      vfio/migration: Add debugfs to live migration driver
      Documentation: add debugfs description for vfio
      MAINTAINERS: Add vfio debugfs interface doc link

Pasha Tatashin (1):
      vfio/type1: account iommu allocations

Shameer Kolothum (1):
      hisi_acc_vfio_pci: Update migration data pointer correctly on saving/resume

Yishai Hadas (6):
      virtio-pci: Initialize the supported admin commands
      virtio-pci: Introduce APIs to execute legacy IO admin commands
      vfio/pci: Expose vfio_pci_core_setup_barmap()
      vfio/pci: Expose vfio_pci_core_iowrite/read##size()
      vfio/virtio: Introduce a vfio driver over virtio devices
      vfio/virtio: Declare virtiovf_pci_aer_reset_done() static

 Documentation/ABI/testing/debugfs-vfio         |  25 ++
 MAINTAINERS                                    |   8 +
 drivers/vfio/Kconfig                           |  10 +
 drivers/vfio/Makefile                          |   1 +
 drivers/vfio/debugfs.c                         |  92 ++++
 drivers/vfio/pci/Kconfig                       |   2 +
 drivers/vfio/pci/Makefile                      |   2 +
 drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c |   7 +-
 drivers/vfio/pci/pds/dirty.c                   | 309 ++++++++-----
 drivers/vfio/pci/pds/dirty.h                   |  18 +-
 drivers/vfio/pci/vfio_pci_rdwr.c               |  57 +--
 drivers/vfio/pci/virtio/Kconfig                |  15 +
 drivers/vfio/pci/virtio/Makefile               |   3 +
 drivers/vfio/pci/virtio/main.c                 | 576 +++++++++++++++++++++++++
 drivers/vfio/vfio.h                            |  14 +
 drivers/vfio/vfio_iommu_type1.c                |   8 +-
 drivers/vfio/vfio_main.c                       |   4 +
 drivers/virtio/Kconfig                         |   5 +
 drivers/virtio/Makefile                        |   1 +
 drivers/virtio/virtio.c                        |  37 +-
 drivers/virtio/virtio_pci_admin_legacy_io.c    | 244 +++++++++++
 drivers/virtio/virtio_pci_common.c             |  14 +
 drivers/virtio/virtio_pci_common.h             |  42 +-
 drivers/virtio/virtio_pci_modern.c             | 259 ++++++++++-
 drivers/virtio/virtio_pci_modern_dev.c         |  24 +-
 include/linux/vfio.h                           |   7 +
 include/linux/vfio_pci_core.h                  |  20 +
 include/linux/virtio.h                         |   8 +
 include/linux/virtio_config.h                  |   4 +
 include/linux/virtio_pci_admin.h               |  23 +
 include/linux/virtio_pci_modern.h              |   2 +
 include/uapi/linux/vfio.h                      |   1 +
 include/uapi/linux/virtio_config.h             |   8 +-
 include/uapi/linux/virtio_pci.h                |  68 +++
 34 files changed, 1754 insertions(+), 164 deletions(-)
 create mode 100644 Documentation/ABI/testing/debugfs-vfio
 create mode 100644 drivers/vfio/debugfs.c
 create mode 100644 drivers/vfio/pci/virtio/Kconfig
 create mode 100644 drivers/vfio/pci/virtio/Makefile
 create mode 100644 drivers/vfio/pci/virtio/main.c
 create mode 100644 drivers/virtio/virtio_pci_admin_legacy_io.c
 create mode 100644 include/linux/virtio_pci_admin.h