Merge tag 'vfio-v6.13-rc1' of https://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Constify an unmodified structure used in linking vfio and kvm
   (Christophe JAILLET)

 - Add ID for an additional hardware SKU supported by the nvgrace-gpu
   vfio-pci variant driver (Ankit Agrawal)

 - Fix incorrect signed cast in QAT vfio-pci variant driver, negating
   test in check_add_overflow(), though still caught by later tests
   (Giovanni Cabiddu)

 - Additional debugfs attributes exposed in hisi_acc vfio-pci variant
   driver for migration debugging (Longfang Liu)

 - Migration support is added to the virtio vfio-pci variant driver,
   becoming the primary feature of the driver while retaining emulation
   of virtio legacy support as a secondary option (Yishai Hadas)

 - Fixes to a few unwind flows in the mlx5 vfio-pci driver discovered
   through reviews of the virtio variant driver (Yishai Hadas)

 - Fix an unlikely issue where a PCI device exposed to userspace with an
   unknown capability at the base of the extended capability chain can
   overflow an array index (Avihai Horon)

* tag 'vfio-v6.13-rc1' of https://github.com/awilliam/linux-vfio:
  vfio/pci: Properly hide first-in-list PCIe extended capability
  vfio/mlx5: Fix unwind flows in mlx5vf_pci_save/resume_device_data()
  vfio/mlx5: Fix an unwind issue in mlx5vf_add_migration_pages()
  vfio/virtio: Enable live migration once VIRTIO_PCI was configured
  vfio/virtio: Add PRE_COPY support for live migration
  vfio/virtio: Add support for the basic live migration functionality
  virtio-pci: Introduce APIs to execute device parts admin commands
  virtio: Manage device and driver capabilities via the admin commands
  virtio: Extend the admin command to include the result size
  virtio_pci: Introduce device parts access commands
  Documentation: add debugfs description for hisi migration
  hisi_acc_vfio_pci: register debugfs for hisilicon migration driver
  hisi_acc_vfio_pci: create subfunction for data reading
  hisi_acc_vfio_pci: extract public functions for container_of
  vfio/qat: fix overflow check in qat_vf_resume_write()
  vfio/nvgrace-gpu: Add a new GH200 SKU to the devid table
  kvm/vfio: Constify struct kvm_device_ops

1 files changed, 25 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/debugfs-hisi-migration b/Documentation/ABI/testing/debugfs-hisi-migration
new file mode 100644
index 000000000000..2c01b2d387dd
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-hisi-migration
@@ -0,0 +1,25 @@
+What:		/sys/kernel/debug/vfio/<device>/migration/hisi_acc/dev_data
+Date:		Jan 2025
+KernelVersion:  6.13
+Contact:	Longfang Liu <liulongfang@huawei.com>
+Description:	Read the configuration data and some status data
+		required for device live migration. These data include device
+		status data, queue configuration data, some task configuration
+		data and device attribute data. The output format of the data
+		is defined by the live migration driver.
+
+What:		/sys/kernel/debug/vfio/<device>/migration/hisi_acc/migf_data
+Date:		Jan 2025
+KernelVersion:  6.13
+Contact:	Longfang Liu <liulongfang@huawei.com>
+Description:	Read the data from the last completed live migration.
+		This data includes the same device status data as in "dev_data".
+		The migf_data is the dev_data that is migrated.
+
+What:		/sys/kernel/debug/vfio/<device>/migration/hisi_acc/cmd_state
+Date:		Jan 2025
+KernelVersion:  6.13
+Contact:	Longfang Liu <liulongfang@huawei.com>
+Description:	Used to obtain the device command sending and receiving
+		channel status. Returns failure or success logs based on the
+		results.