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Documentation: add debugfs description for hisi migration

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Add a debugfs document description file to help users understand
how to use the hisilicon accelerator live migration driver's
debugfs.

Update the file paths that need to be maintained in MAINTAINERS

Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Reviewed-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Link: https://lore.kernel.org/r/20241112073322.54550-5-liulongfang@huawei.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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Longfang Liu 2024-11-12 15:33:22 +08:00 committed by Alex Williamson
parent b398f91779
commit a13bf78fee
1 changed files with 25 additions and 0 deletions
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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.