diff options
| author | Sourabh Jain <sourabhjain@linux.ibm.com> | 2024-08-12 09:46:51 +0530 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-01 20:43:37 -0700 |
| commit | c91c6062d6cd1bc366efb04973ee449c30398a49 (patch) | |
| tree | 2dc2f63ba86066ebe76615f3a6f27aa76b565883 /Documentation/admin-guide/mm | |
| parent | caaab56609ce48076af7361163b6a8f7f14d53b3 (diff) | |
Document/kexec: generalize crash hotplug description
Commit 79365026f869 ("crash: add a new kexec flag for hotplug support")
generalizes the crash hotplug support to allow architectures to update
multiple kexec segments on CPU/Memory hotplug and not just elfcorehdr.
Therefore, update the relevant kernel documentation to reflect the same.
No functional change.
Link: https://lkml.kernel.org/r/20240812041651.703156-1-sourabhjain@linux.ibm.com
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Reviewed-by: Petr Tesarik <ptesarik@suse.com>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Hari Bathini <hbathini@linux.ibm.com>
Cc: Petr Tesarik <petr@tesarici.cz>
Cc: Sourabh Jain <sourabhjain@linux.ibm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/admin-guide/mm')
| -rw-r--r-- | Documentation/admin-guide/mm/memory-hotplug.rst | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/admin-guide/mm/memory-hotplug.rst b/Documentation/admin-guide/mm/memory-hotplug.rst index 098f14d83e99..cb2c080f400c 100644 --- a/Documentation/admin-guide/mm/memory-hotplug.rst +++ b/Documentation/admin-guide/mm/memory-hotplug.rst @@ -294,8 +294,9 @@ The following files are currently defined: ``crash_hotplug`` read-only: when changes to the system memory map occur due to hot un/plug of memory, this file contains '1' if the kernel updates the kdump capture kernel memory - map itself (via elfcorehdr), or '0' if userspace must update - the kdump capture kernel memory map. + map itself (via elfcorehdr and other relevant kexec + segments), or '0' if userspace must update the kdump + capture kernel memory map. Availability depends on the CONFIG_MEMORY_HOTPLUG kernel configuration option. |