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A debugfs directory was recently added for VFIO devices. Add a new "features" file under the migration sub-directory to expose which features the device supports. Signed-off-by: Cédric Le Goater <clg@redhat.com> Link: https://lore.kernel.org/r/20250918121928.1921871-1-clg@redhat.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
32 lines
1.2 KiB
Plaintext
32 lines
1.2 KiB
Plaintext
What: /sys/kernel/debug/vfio
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Date: December 2023
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KernelVersion: 6.8
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Contact: Longfang Liu <liulongfang@huawei.com>
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Description: This debugfs file directory is used for debugging
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of vfio devices, it's a common directory for all vfio devices.
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Vfio core will create a device subdirectory under this
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directory.
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What: /sys/kernel/debug/vfio/<device>/migration
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Date: December 2023
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KernelVersion: 6.8
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Contact: Longfang Liu <liulongfang@huawei.com>
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Description: This debugfs file directory is used for debugging
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of vfio devices that support live migration.
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The debugfs of each vfio device that supports live migration
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could be created under this directory.
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What: /sys/kernel/debug/vfio/<device>/migration/state
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Date: December 2023
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KernelVersion: 6.8
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Contact: Longfang Liu <liulongfang@huawei.com>
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Description: Read the live migration status of the vfio device.
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The contents of the state file reflects the migration state
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relative to those defined in the vfio_device_mig_state enum
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What: /sys/kernel/debug/vfio/<device>/migration/features
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Date: Oct 2025
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KernelVersion: 6.18
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Contact: Cédric Le Goater <clg@redhat.com>
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Description: Read the migration features of the vfio device.
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