summaryrefslogtreecommitdiffstats
path: root/Documentation/ABI/testing/sysfs-kernel-livepatch
diff options
context:
space:
mode:
authorSang-Heon Jeon <ekffu200098@gmail.com>2026-08-24 01:18:14 +0900
committerJulia Lawall <Julia.Lawall@inria.fr>2026-08-23 22:12:11 +0200
commit2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c (patch)
treedcc4da1d99f17541c5590ac63c77da4bf372a4ab /Documentation/ABI/testing/sysfs-kernel-livepatch
downloadlinux-stable-2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c.tar.gz
linux-stable-2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c.zip
coccinelle: alloc_cast: drop removed allocatorsgrafted
- pci_alloc_consistent() and pci_zalloc_consistent() were removed by commit 7968778914e5 ("PCI: Remove the deprecated "pci-dma-compat.h" API") - kmem_alloc() was removed by commit f078d4ea8276 ("xfs: convert kmem_alloc() to kmalloc()") - kmem_zalloc() was removed by commit 10634530f7ba ("xfs: convert kmem_zalloc() to kzalloc()") - kmem_zone_alloc() and kmem_zone_zalloc() were removed by commit bae633a4a283 ("xfs: remove xfs_zone_{alloc,zalloc} helpers") So drop them from the rules. No functional change. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-kernel-livepatch')
-rw-r--r--Documentation/ABI/testing/sysfs-kernel-livepatch95
1 files changed, 95 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-kernel-livepatch b/Documentation/ABI/testing/sysfs-kernel-livepatch
new file mode 100644
index 000000000..3c3f36b32
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-livepatch
@@ -0,0 +1,95 @@
+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>/replace
+Date: Jun 2024
+KernelVersion: 6.11.0
+Contact: live-patching@vger.kernel.org
+Description:
+ An attribute which indicates whether the patch supports
+ atomic-replace.
+
+What: /sys/kernel/livepatch/<patch>/stack_order
+Date: Jan 2025
+KernelVersion: 6.14.0
+Description:
+ This attribute specifies the sequence in which live patch modules
+ are applied to the system. If multiple live patches modify the same
+ function, the implementation with the biggest 'stack_order' number
+ is used, unless a transition is currently in progress.
+
+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>/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/<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.