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docs: livepatch: move text out of code block

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Part of the documentation text is included in the readelf output code
block. Hence, split the code block and move the affected text outside.

Signed-off-by: Vincenzo MEZZELA <vincenzo.mezzela@suse.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20250227163929.141053-1-vincenzo.mezzela@suse.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
This commit is contained in:
Vincenzo MEZZELA 2025-02-27 17:39:29 +01:00 committed by Petr Mladek
parent 376c879e04
commit 4deb3b259f
1 changed files with 8 additions and 5 deletions
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13
Documentation/livepatch/module-elf-format.rst
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@ -217,16 +217,19 @@ livepatch relocation section refer to their respective symbols with their symbol
indices, and the original symbol indices (and thus the symtab ordering) must be
preserved in order for apply_relocate_add() to find the right symbol.
For example, take this particular rela from a livepatch module:::
For example, take this particular rela from a livepatch module::
Relocation section '.klp.rela.btrfs.text.btrfs_feature_attr_show' at offset 0x2ba0 contains 4 entries:
Offset Info Type Symbol's Value Symbol's Name + Addend
000000000000001f 0000005e00000002 R_X86_64_PC32 0000000000000000 .klp.sym.vmlinux.printk,0 - 4
This rela refers to the symbol '.klp.sym.vmlinux.printk,0', and the symbol index is encoded
in 'Info'. Here its symbol index is 0x5e, which is 94 in decimal, which refers to the
symbol index 94.
And in this patch module's corresponding symbol table, symbol index 94 refers to that very symbol:
This rela refers to the symbol '.klp.sym.vmlinux.printk,0', and the symbol
index is encoded in 'Info'. Here its symbol index is 0x5e, which is 94 in
decimal, which refers to the symbol index 94.
And in this patch module's corresponding symbol table, symbol index 94 refers
to that very symbol::
[ snip ]
94: 0000000000000000 0 NOTYPE GLOBAL DEFAULT OS [0xff20] .klp.sym.vmlinux.printk,0
[ snip ]