Add an debugfs document description file to help users understand how to use the accelerator live migration driver's debugfs. Signed-off-by: Longfang Liu <liulongfang@xxxxxxxxxx> Reviewed-by: Cedric Le Goater <clg@xxxxxxxxxx> --- Documentation/ABI/testing/debugfs-vfio | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 Documentation/ABI/testing/debugfs-vfio diff --git a/Documentation/ABI/testing/debugfs-vfio b/Documentation/ABI/testing/debugfs-vfio new file mode 100644 index 000000000000..210eca135979 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-vfio @@ -0,0 +1,25 @@ +What: /sys/kernel/debug/vfio +Date: Nov 2023 +KernelVersion: 6.7 +Contact: Longfang Liu <liulongfang@xxxxxxxxxx> +Description: This debugfs file directory is used for debugging + of vfio devices, it's a common directory for all vfio devices. + Vfio core will create a device subdirectory under this + directory. + +What: /sys/kernel/debug/vfio/<device>/migration +Date: Nov 2023 +KernelVersion: 6.7 +Contact: Longfang Liu <liulongfang@xxxxxxxxxx> +Description: This debugfs file directory is used for debugging + of vfio devices that support live migration. + The debugfs of each vfio device that supports live migration + could be created under this directory. + +What: /sys/kernel/debug/vfio/<device>/migration/state +Date: Nov 2023 +KernelVersion: 6.7 +Contact: Longfang Liu <liulongfang@xxxxxxxxxx> +Description: Read the live migration status of the vfio device. + The contents of the state file reflects the migration state + relative to those defined in the vfio_device_mig_state enum -- 2.24.0
