linux-kernel - [PATCH v3 0/2] objtool: altinstructions fix and cleanup

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Date:   Sun, 22 Aug 2021 18:50:35 -0400
From:   Joe Lawrence <joe.lawrence@...hat.com>
To:     x86@...nel.org, Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org, Miroslav Benes <mbenes@...e.cz>,
        Andy Lavr <andy.lavr@...il.com>
Subject: [PATCH v3 0/2] objtool: altinstructions fix and cleanup

This version won't eat your memory and swap when building the entire
kernel.  Apologies to Andy who discovered this over the weekend.

Tested full build and boot w/o problem.  The vmlinux sections, relocs,
size, etc. all appear to be the same before and after this set.
External tooling (kpatch-build) is happy, too.

v3:
- fix bug introduced in arch_decode_instruction() [andy]

v2:
- drop the sec->len update from the first patch [josh]
- rip out sec->len as suggested [josh]


Joe Lawrence (2):
  objtool: make .altinstructions section entry size consistent
  objtool: remove redundant len value from struct section

 tools/objtool/arch/x86/decode.c     |  2 +-
 tools/objtool/check.c               | 16 ++++++++--------
 tools/objtool/elf.c                 | 14 ++++++--------
 tools/objtool/include/objtool/elf.h |  1 -
 tools/objtool/orc_gen.c             |  2 +-
 tools/objtool/special.c             |  4 ++--
 6 files changed, 18 insertions(+), 21 deletions(-)

-- 
2.26.3