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| author | Josh Poimboeuf <jpoimboe@kernel.org> | 2025-09-17 19:04:01 +0300 |
|---|---|---|
| committer | Josh Poimboeuf <jpoimboe@kernel.org> | 2025-10-15 00:50:18 +0300 |
| commit | ebe864b55304f74c4e1a8b6c899e34446b2be424 (patch) | |
| tree | 887efac075ae2801857bfa3e34fc336b2d4bf2cc /tools/objtool/Build | |
| parent | 7c2575a6406fb85946b05d8dcc856686d3156354 (diff) | |
| download | linux-ebe864b55304f74c4e1a8b6c899e34446b2be424.tar.xz | |
objtool/klp: Add post-link subcommand to finalize livepatch modules
Livepatch needs some ELF magic which linkers don't like:
- Two relocation sections (.rela*, .klp.rela*) for the same text
section.
- Use of SHN_LIVEPATCH to mark livepatch symbols.
Unfortunately linkers tend to mangle such things. To work around that,
klp diff generates a linker-compliant intermediate binary which encodes
the relevant KLP section/reloc/symbol metadata.
After module linking, the .ko then needs to be converted to an actual
livepatch module. Introduce a new klp post-link subcommand to do so.
Acked-by: Petr Mladek <pmladek@suse.com>
Tested-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Diffstat (limited to 'tools/objtool/Build')
| -rw-r--r-- | tools/objtool/Build | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/objtool/Build b/tools/objtool/Build index 0b01657671d7..8cd71b9a5eef 100644 --- a/tools/objtool/Build +++ b/tools/objtool/Build @@ -9,7 +9,7 @@ objtool-y += elf.o objtool-y += objtool.o objtool-$(BUILD_ORC) += orc_gen.o orc_dump.o -objtool-$(BUILD_KLP) += builtin-klp.o klp-diff.o +objtool-$(BUILD_KLP) += builtin-klp.o klp-diff.o klp-post-link.o objtool-y += libstring.o objtool-y += libctype.o |