Supporting objtool on ASM files requires quite an effort. Features like UACCESS validation don't require ASM files validation.
In order to allow architectures to enable objtool validation without spending unnecessary effort on cleaning up ASM files, provide an option to disable objtool validation on ASM files. Suggested-by: Naveen N Rao <nav...@kernel.org> Signed-off-by: Christophe Leroy <christophe.le...@csgroup.eu> --- arch/Kconfig | 5 +++++ scripts/Makefile.build | 4 ++++ 2 files changed, 9 insertions(+) diff --git a/arch/Kconfig b/arch/Kconfig index aff2746c8af2..3330ed761260 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -1111,6 +1111,11 @@ config ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT config HAVE_OBJTOOL bool +config ARCH_OBJTOOL_SKIP_ASM + bool + help + Architecture doesn't support objtool on ASM files + config HAVE_JUMP_LABEL_HACK bool diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 6413342a03f4..5818baddfb27 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -342,7 +342,11 @@ $(obj)/%.s: $(src)/%.S FORCE $(call if_changed_dep,cpp_s_S) quiet_cmd_as_o_S = AS $(quiet_modtag) $@ +ifndef CONFIG_ARCH_OBJTOOL_SKIP_ASM cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< $(cmd_objtool) +else + cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< +endif ifdef CONFIG_ASM_MODVERSIONS -- 2.41.0