summaryrefslogtreecommitdiffstats
path: root/Documentation/ABI/testing/debugfs-vfio
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2026-09-25 15:55:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-09-25 15:55:03 -0700
commit75467f60a3d14f08f86f2b353298d2826382ff23 (patch)
treeacd8a7d5b5a675042449386efa5b42ec44d8bf81 /Documentation/ABI/testing/debugfs-vfio
downloadlinux-stable-75467f60a3d14f08f86f2b353298d2826382ff23.tar.gz
linux-stable-75467f60a3d14f08f86f2b353298d2826382ff23.zip
Merge tag 'ipe-pr-20260925' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipegrafted
Pull IPE fixes from Fan Wu: "Two fixes for use-after-free issues found by recent LLM-assisted code analysis. - move successful policy load auditing under the new policy directory's inode lock, preventing a concurrent policy deletion from freeing the policy while it is still being audited - protect the dm-verity root hash with RCU, preventing policy evaluation from racing with root hash replacement during preresume" * tag 'ipe-pr-20260925' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe: ipe: protect the dm-verity root hash with RCU ipe: fix use-after-free when auditing a newly loaded policy
Diffstat (limited to 'Documentation/ABI/testing/debugfs-vfio')
-rw-r--r--Documentation/ABI/testing/debugfs-vfio57
1 files changed, 57 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/debugfs-vfio b/Documentation/ABI/testing/debugfs-vfio
new file mode 100644
index 000000000..ed2f29c3a
--- /dev/null
+++ b/Documentation/ABI/testing/debugfs-vfio
@@ -0,0 +1,57 @@
+What: /sys/kernel/debug/vfio
+Date: December 2023
+KernelVersion: 6.8
+Contact: Longfang Liu <liulongfang@huawei.com>
+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: December 2023
+KernelVersion: 6.8
+Contact: Longfang Liu <liulongfang@huawei.com>
+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: December 2023
+KernelVersion: 6.8
+Contact: Longfang Liu <liulongfang@huawei.com>
+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
+
+What: /sys/kernel/debug/vfio/<device>/migration/features
+Date: Oct 2025
+KernelVersion: 6.18
+Contact: Cédric Le Goater <clg@redhat.com>
+Description: Read the migration features of the vfio device.
+
+What: /sys/kernel/debug/vfio/<device>/pci
+Date: June 2026
+KernelVersion: 7.2
+Contact: Alex Williamson <alex.williamson@nvidia.com>
+Description: This debugfs file directory is used for debugging
+ VFIO PCI devices.
+
+What: /sys/kernel/debug/vfio/<device>/pci/nointxmask
+Date: June 2026
+KernelVersion: 7.2
+Contact: Alex Williamson <alex.williamson@nvidia.com>
+Description: Read the nointxmask policy latched for this device. This
+ policy governs whether the device may use PCI 2.3 style
+ INTx masking when supported, reporting a value of "N", or
+ requires APIC level INTx masking, reporting a value of "Y".
+
+What: /sys/kernel/debug/vfio/<device>/pci/disable_idle_d3
+Date: June 2026
+KernelVersion: 7.2
+Contact: Alex Williamson <alex.williamson@nvidia.com>
+Description: Read the disable_idle_d3 policy latched for this device. This
+ policy governs whether the device PM runtime usage count is
+ kept elevated while the device is bound to the driver and
+ unused, reporting a value of "Y", or decremented to allow the
+ device to enter a low power state, reporting a value of "N".