Thread (8 messages) 8 messages, 2 authors, 2025-11-15
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[PATCH v4 3/5] Documentation/ABI: mark old kexec sysfs deprecated

From: Sourabh Jain <hidden>
Date: 2025-11-14 05:15:52
Also in: kexec, lkml
Subsystem: the rest · Maintainer: Linus Torvalds

The previous commit ("kexec: move sysfs entries to /sys/kernel/kexec")
moved all existing kexec sysfs entries to a new location. The ABI
document is updated to include a note about the deprecation of the old
kexec sysfs entries.

The following kexec sysfs entries are deprecated:
- /sys/kernel/kexec_loaded
- /sys/kernel/kexec_crash_loaded
- /sys/kernel/kexec_crash_size
- /sys/kernel/crash_elfcorehdr_size

Cc: Aditya Gupta <redacted>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Baoquan he <bhe@redhat.com>
Cc: Dave Young <redacted>
Cc: Hari Bathini <hbathini@linux.ibm.com>
Cc: Jiri Bohac <redacted>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Mahesh J Salgaonkar <mahesh@linux.ibm.com>
Cc: Pingfan Liu <redacted>
Cc: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Cc: Shivang Upadhyay <redacted>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: kexec@lists.infradead.org
Signed-off-by: Sourabh Jain <redacted>
---
 .../sysfs-kernel-kexec-kdump                     | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 rename Documentation/ABI/{testing => obsolete}/sysfs-kernel-kexec-kdump (61%)
diff --git a/Documentation/ABI/testing/sysfs-kernel-kexec-kdump b/Documentation/ABI/obsolete/sysfs-kernel-kexec-kdump
similarity index 61%
rename from Documentation/ABI/testing/sysfs-kernel-kexec-kdump
rename to Documentation/ABI/obsolete/sysfs-kernel-kexec-kdump
index 96b24565b68e..96b4d41721cc 100644
--- a/Documentation/ABI/testing/sysfs-kernel-kexec-kdump
+++ b/Documentation/ABI/obsolete/sysfs-kernel-kexec-kdump
@@ -1,3 +1,19 @@
+NOTE: all the ABIs listed in this file are deprecated and will be removed after 2028.
+
+Here are the alternative ABIs:
++------------------------------------+-----------------------------------------+
+| Deprecated                         | Alternative                             |
++------------------------------------+-----------------------------------------+
+| /sys/kernel/kexec_loaded           | /sys/kernel/kexec/loaded                |
++------------------------------------+-----------------------------------------+
+| /sys/kernel/kexec_crash_loaded     | /sys/kernel/kexec/crash_loaded          |
++------------------------------------+-----------------------------------------+
+| /sys/kernel/kexec_crash_size       | /sys/kernel/kexec/crash_size            |
++------------------------------------+-----------------------------------------+
+| /sys/kernel/crash_elfcorehdr_size  | /sys/kernel/kexec/crash_elfcorehdr_size |
++------------------------------------+-----------------------------------------+
+
+
 What:		/sys/kernel/kexec_loaded
 Date:		Jun 2006
 Contact:	kexec@lists.infradead.org
-- 
2.51.1

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