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.lib | 4 ++++
2 files changed, 9 insertions(+)
diff --git a/arch/Kconfig b/arch/Kconfig
index 6682b2a53e34..137ef643e865 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -1305,6 +1305,11 @@ 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.lib b/scripts/Makefile.lib
index 7395200538da..3c5e6de76b11 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -325,7 +325,11 @@ define rule_cc_o_c
endef
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
define rule_as_o_S
$(call cmd_and_fixdep,as_o_S)
--
2.47.0
