| 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/<patch> | |
| 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/<patch>/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/<patch>/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/<patch>/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/<patch>/<object> | |
| 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/<patch>/<object>/<function,sympos> | |
| 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. |