| 文件 | 最后提交记录 | 最后更新时间 |
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objtool/LoongArch: Mark special atomic instruction as INSN_BUG type mainline inclusion from mainline-v6.17-rc7 category: bugfix When compiling with LLVM and CONFIG_RUST is set, there exists the following objtool warning: rust/compiler_builtins.o: warning: objtool: __rust__unordsf2(): unexpected end of section .text.unlikely. objdump shows that the end of section .text.unlikely is an atomic instruction: amswap.w $zero, $ra, $zero According to the LoongArch Reference Manual, if the amswap.w atomic memory access instruction has the same register number as rd and rj, the execution will trigger an Instruction Non-defined Exception, so mark the above instruction as INSN_BUG type to fix the warning. Cc: stable@vger.kernel.org Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> [It also fixes objtool other warning such as "warning: objtool: __checkpoint_and_complete_reqs() falls through to next function issue_checkpoint_thread()"] (cherry picked from commit 539d7344d4feaea37e05863e9aa86bd31f28e46f) Signed-off-by: Wentao Guan <guanwentao@uniontech.com> | 4 个月前 |