linux-kernel - [PATCH v7 0/7] Add jump table support for objtool on LoongArch

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Message-ID: <20250211115016.26913-1-yangtiezhu@loongson.cn>
Date: Tue, 11 Feb 2025 19:50:09 +0800
From: Tiezhu Yang <yangtiezhu@...ngson.cn>
To: Josh Poimboeuf <jpoimboe@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Huacai Chen <chenhuacai@...nel.org>
Cc: loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH v7 0/7] Add jump table support for objtool on LoongArch

This version is based on tip/tip.git master branch [1], the patch
"objtool: Handle unreachable entry of rodata" is dropped, tested
with the latest mainline Binutils, GCC and Clang (2025-02-11).

[1] https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=master

Tiezhu Yang (7):
  objtool: Handle various symbol types of rodata
  objtool: Handle different entry size of rodata
  objtool: Handle PC relative relocation type
  objtool/LoongArch: Add support for switch table
  objtool/LoongArch: Add support for goto table
  LoongArch: Enable jump table for objtool
  LoongArch: Convert unreachable() to BUG()

 arch/loongarch/Kconfig                        |   3 +
 arch/loongarch/Makefile                       |   6 +-
 arch/loongarch/kernel/machine_kexec.c         |   4 +-
 tools/objtool/arch/loongarch/decode.c         |  28 ++-
 .../objtool/arch/loongarch/include/arch/elf.h |   7 +
 tools/objtool/arch/loongarch/special.c        | 159 +++++++++++++++++-
 tools/objtool/arch/powerpc/decode.c           |  15 ++
 tools/objtool/arch/x86/decode.c               |  13 ++
 tools/objtool/check.c                         |  23 ++-
 tools/objtool/include/objtool/arch.h          |   3 +
 10 files changed, 247 insertions(+), 14 deletions(-)

-- 
2.42.0