What: /sys/kernel/livepatch Date: Nov 2014 KernelVersion: 3.19.0 Contact: live-patching@vger.kernel.org Description: Interface for kernel live patching The /sys/kernel/livepatch directory contains subdirectories for each loaded live patch module. What: /sys/kernel/livepatch/ Date: Nov 2014 KernelVersion: 3.19.0 Contact: live-patching@vger.kernel.org Description: The patch directory contains subdirectories for each kernel object (vmlinux or a module) in which it patched functions. What: /sys/kernel/livepatch//enabled Date: Nov 2014 KernelVersion: 3.19.0 Contact: live-patching@vger.kernel.org Description: A writable attribute that indicates whether the patched code is currently applied. Writing 0 will disable the patch while writing 1 will re-enable the patch. What: /sys/kernel/livepatch//transition Date: Feb 2017 KernelVersion: 4.12.0 Contact: live-patching@vger.kernel.org Description: An attribute which indicates whether the patch is currently in transition. What: /sys/kernel/livepatch//force Date: Nov 2017 KernelVersion: 4.15.0 Contact: live-patching@vger.kernel.org Description: A writable attribute that allows administrator to affect the course of an existing transition. Writing 1 clears TIF_PATCH_PENDING flag of all tasks and thus forces the tasks to the patched or unpatched state. Administrator should not use this feature without a clearance from a patch distributor. Removal (rmmod) of patch modules is permanently disabled when the feature is used. See Documentation/livepatch/livepatch.rst for more information. What: /sys/kernel/livepatch// Date: Nov 2014 KernelVersion: 3.19.0 Contact: live-patching@vger.kernel.org Description: The object directory contains subdirectories for each function that is patched within the object. What: /sys/kernel/livepatch///patched Date: August 2022 KernelVersion: 6.1.0 Contact: live-patching@vger.kernel.org Description: An attribute which indicates whether the object is currently patched. What: /sys/kernel/livepatch/// Date: Nov 2014 KernelVersion: 3.19.0 Contact: live-patching@vger.kernel.org Description: The function directory contains attributes regarding the properties and state of the patched function. The directory name contains the patched function name and a sympos number corresponding to the nth occurrence of the symbol name in kallsyms for the patched object. There are currently no such attributes.