From d11f96d0c0c30e6ed73049c752a1ca7621e7062f Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 31 Aug 2021 16:39:52 +0900 Subject: [PATCH] kbuild: move objtool_args back to scripts/Makefile.build [ Upstream commit 8f0c32c788fffa8e88f995372415864039347c8a ] Commit b1a1a1a09b46 ("kbuild: lto: postpone objtool") moved objtool_args to Makefile.lib, so the arguments can be used in Makefile.modfinal as well as Makefile.build. With commit 850ded46c642 ("kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG"), module LTO linking came back to scripts/Makefile.build again. So, there is no more reason to keep objtool_args in a separate file. Get it back to the original place, close to the objtool command. Remove the stale comment too. Signed-off-by: Masahiro Yamada Reviewed-by: Kees Cook Acked-by: Josh Poimboeuf Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- scripts/Makefile.build | 10 ++++++++++ scripts/Makefile.lib | 11 ----------- 2 files changed, 10 insertions(+), 11 deletions(-) diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 3efc984d4c690..17508c0e43586 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -224,6 +224,16 @@ cmd_record_mcount = $(if $(findstring $(strip $(CC_FLAGS_FTRACE)),$(_c_flags)), endif # CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT ifdef CONFIG_STACK_VALIDATION + +objtool_args = \ + $(if $(CONFIG_UNWINDER_ORC),orc generate,check) \ + $(if $(part-of-module), --module) \ + $(if $(CONFIG_FRAME_POINTER),, --no-fp) \ + $(if $(CONFIG_GCOV_KERNEL)$(CONFIG_LTO_CLANG), --no-unreachable)\ + $(if $(CONFIG_RETPOLINE), --retpoline) \ + $(if $(CONFIG_X86_SMAP), --uaccess) \ + $(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount) + ifndef CONFIG_LTO_CLANG __objtool_obj := $(objtree)/tools/objtool/objtool diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 54582673fc1a0..0a8a4689c3ebb 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -232,17 +232,6 @@ ifeq ($(CONFIG_LTO_CLANG),y) mod-prelink-ext := .lto endif -# Objtool arguments are also needed for modfinal with LTO, so we define -# then here to avoid duplication. -objtool_args = \ - $(if $(CONFIG_UNWINDER_ORC),orc generate,check) \ - $(if $(part-of-module), --module) \ - $(if $(CONFIG_FRAME_POINTER),, --no-fp) \ - $(if $(CONFIG_GCOV_KERNEL)$(CONFIG_LTO_CLANG), --no-unreachable)\ - $(if $(CONFIG_RETPOLINE), --retpoline) \ - $(if $(CONFIG_X86_SMAP), --uaccess) \ - $(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount) - # Useful for describing the dependency of composite objects # Usage: # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)