58 lines
2.2 KiB
Plaintext
58 lines
2.2 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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What: /sys/kernel/debug/vfio/<device>/pci
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alex Williamson <alex.williamson@nvidia.com>
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Description: This debugfs file directory is used for debugging
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VFIO PCI devices.
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What: /sys/kernel/debug/vfio/<device>/pci/nointxmask
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alex Williamson <alex.williamson@nvidia.com>
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Description: Read the nointxmask policy latched for this device. This
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policy governs whether the device may use PCI 2.3 style
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INTx masking when supported, reporting a value of "N", or
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requires APIC level INTx masking, reporting a value of "Y".
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What: /sys/kernel/debug/vfio/<device>/pci/disable_idle_d3
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Date: June 2026
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KernelVersion: 7.2
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Contact: Alex Williamson <alex.williamson@nvidia.com>
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Description: Read the disable_idle_d3 policy latched for this device. This
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policy governs whether the device PM runtime usage count is
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kept elevated while the device is bound to the driver and
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unused, reporting a value of "Y", or decremented to allow the
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device to enter a low power state, reporting a value of "N".
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