On Fri, May 27, 2022 at 11:19:02AM +0900, Masahiro Yamada wrote: > [1] original behavior in Josh's commit > > $ git checkout 753da4179d08b625d8df72e97724e22749969fd3 > $ make defconfig > $ make -j8 kernel/ > $ head -n 1 kernel/.fork.o.cmd > > > I do not see the "--linked" parameter in the objtool command. > > > > > [2] behavior in linux-next > > > $ git checkout next-20220523 > $ make defconfig > $ make -j8 kernel/ > $ head -n 1 kernel/.fork.o.cmd > > I see the "--linked" parameter in the objtool command. > > kernel/fork.o is a direct output from GCC, > not from linker. Yes, good catch. That flag should only be used for linked objects like vmlinux.o or some_module.o. Objtool only runs on such objects when CONFIG_LTO_CLANG, CONFIG_X86_KERNEL_IBT, or CONFIG_NOINSTR_VALIDATION (vmlinux.o-only) is enabled. -- Josh
