1 What: /sys/kernel/livepatch 1 What: /sys/kernel/livepatch
2 Date: Nov 2014 2 Date: Nov 2014
3 KernelVersion: 3.19.0 3 KernelVersion: 3.19.0
4 Contact: live-patching@vger.kernel.org 4 Contact: live-patching@vger.kernel.org
5 Description: 5 Description:
6 Interface for kernel live patc 6 Interface for kernel live patching
7 7
8 The /sys/kernel/livepatch dire 8 The /sys/kernel/livepatch directory contains subdirectories for
9 each loaded live patch module. 9 each loaded live patch module.
10 10
11 What: /sys/kernel/livepatch/<patch> 11 What: /sys/kernel/livepatch/<patch>
12 Date: Nov 2014 12 Date: Nov 2014
13 KernelVersion: 3.19.0 13 KernelVersion: 3.19.0
14 Contact: live-patching@vger.kernel.org 14 Contact: live-patching@vger.kernel.org
15 Description: 15 Description:
16 The patch directory contains s 16 The patch directory contains subdirectories for each kernel
17 object (vmlinux or a module) i 17 object (vmlinux or a module) in which it patched functions.
18 18
19 What: /sys/kernel/livepatch/<patch>/ 19 What: /sys/kernel/livepatch/<patch>/enabled
20 Date: Nov 2014 20 Date: Nov 2014
21 KernelVersion: 3.19.0 21 KernelVersion: 3.19.0
22 Contact: live-patching@vger.kernel.org 22 Contact: live-patching@vger.kernel.org
23 Description: 23 Description:
24 A writable attribute that indi 24 A writable attribute that indicates whether the patched
25 code is currently applied. Wr 25 code is currently applied. Writing 0 will disable the patch
26 while writing 1 will re-enable 26 while writing 1 will re-enable the patch.
27 27
28 What: /sys/kernel/livepatch/<patch>/ 28 What: /sys/kernel/livepatch/<patch>/transition
29 Date: Feb 2017 29 Date: Feb 2017
30 KernelVersion: 4.12.0 30 KernelVersion: 4.12.0
31 Contact: live-patching@vger.kernel.org 31 Contact: live-patching@vger.kernel.org
32 Description: 32 Description:
33 An attribute which indicates w 33 An attribute which indicates whether the patch is currently in
34 transition. 34 transition.
35 35
36 What: /sys/kernel/livepatch/<patch>/ <<
37 Date: Nov 2017 <<
38 KernelVersion: 4.15.0 <<
39 Contact: live-patching@vger.kernel.org <<
40 Description: <<
41 A writable attribute that allo <<
42 course of an existing transiti <<
43 TIF_PATCH_PENDING flag of all <<
44 the patched or unpatched state <<
45 use this feature without a cle <<
46 distributor. Removal (rmmod) o <<
47 disabled when the feature is u <<
48 Documentation/livepatch/livepa <<
49 <<
50 What: /sys/kernel/livepatch/<patch>/ <<
51 Date: Jun 2024 <<
52 KernelVersion: 6.11.0 <<
53 Contact: live-patching@vger.kernel.org <<
54 Description: <<
55 An attribute which indicates w <<
56 atomic-replace. <<
57 <<
58 What: /sys/kernel/livepatch/<patch>/ 36 What: /sys/kernel/livepatch/<patch>/<object>
59 Date: Nov 2014 37 Date: Nov 2014
60 KernelVersion: 3.19.0 38 KernelVersion: 3.19.0
61 Contact: live-patching@vger.kernel.org 39 Contact: live-patching@vger.kernel.org
62 Description: 40 Description:
63 The object directory contains 41 The object directory contains subdirectories for each function
64 that is patched within the obj 42 that is patched within the object.
65 <<
66 What: /sys/kernel/livepatch/<patch>/ <<
67 Date: August 2022 <<
68 KernelVersion: 6.1.0 <<
69 Contact: live-patching@vger.kernel.org <<
70 Description: <<
71 An attribute which indicates w <<
72 patched. <<
73 43
74 What: /sys/kernel/livepatch/<patch>/ 44 What: /sys/kernel/livepatch/<patch>/<object>/<function,sympos>
75 Date: Nov 2014 45 Date: Nov 2014
76 KernelVersion: 3.19.0 46 KernelVersion: 3.19.0
77 Contact: live-patching@vger.kernel.org 47 Contact: live-patching@vger.kernel.org
78 Description: 48 Description:
79 The function directory contain 49 The function directory contains attributes regarding the
80 properties and state of the pa 50 properties and state of the patched function.
81 51
82 The directory name contains th 52 The directory name contains the patched function name and a
83 sympos number corresponding to 53 sympos number corresponding to the nth occurrence of the symbol
84 name in kallsyms for the patch 54 name in kallsyms for the patched object.
85 55
86 There are currently no such at 56 There are currently no such attributes.
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