diff options
| author | Peter Zijlstra <[email protected]> | 2021-11-19 17:50:24 +0100 |
|---|---|---|
| committer | Borislav Petkov <[email protected]> | 2021-12-08 11:39:42 +0100 |
| commit | b2f825bfeda884f9d40386cc7d089d023017d2dd (patch) | |
| tree | 3c667ee9593bcafff9262554276c038918af12fb | |
| parent | 3411506550b1f714a52b5db087666c08658d2698 (diff) | |
x86: Move RETPOLINE*_CFLAGS to arch Makefile
Currently, RETPOLINE*_CFLAGS are defined in the top-level Makefile
but only x86 makes use of them. Move them there. If ever another
architecture finds the need, it can be reconsidered.
[ bp: Massage a bit. ]
Suggested-by: Nick Desaulniers <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Reviewed-by: Nick Desaulniers <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
| -rw-r--r-- | Makefile | 11 | ||||
| -rw-r--r-- | arch/x86/Makefile | 11 |
2 files changed, 11 insertions, 11 deletions
@@ -688,17 +688,6 @@ ifdef CONFIG_FUNCTION_TRACER CC_FLAGS_FTRACE := -pg endif -ifdef CONFIG_CC_IS_GCC -RETPOLINE_CFLAGS := $(call cc-option,-mindirect-branch=thunk-extern -mindirect-branch-register) -RETPOLINE_VDSO_CFLAGS := $(call cc-option,-mindirect-branch=thunk-inline -mindirect-branch-register) -endif -ifdef CONFIG_CC_IS_CLANG -RETPOLINE_CFLAGS := -mretpoline-external-thunk -RETPOLINE_VDSO_CFLAGS := -mretpoline -endif -export RETPOLINE_CFLAGS -export RETPOLINE_VDSO_CFLAGS - include $(srctree)/arch/$(SRCARCH)/Makefile ifdef need-config diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 42243869216d..2f40de5d82a2 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -12,6 +12,17 @@ else KBUILD_DEFCONFIG := $(ARCH)_defconfig endif +ifdef CONFIG_CC_IS_GCC +RETPOLINE_CFLAGS := $(call cc-option,-mindirect-branch=thunk-extern -mindirect-branch-register) +RETPOLINE_VDSO_CFLAGS := $(call cc-option,-mindirect-branch=thunk-inline -mindirect-branch-register) +endif +ifdef CONFIG_CC_IS_CLANG +RETPOLINE_CFLAGS := -mretpoline-external-thunk +RETPOLINE_VDSO_CFLAGS := -mretpoline +endif +export RETPOLINE_CFLAGS +export RETPOLINE_VDSO_CFLAGS + # For gcc stack alignment is specified with -mpreferred-stack-boundary, # clang has the option -mstack-alignment for that purpose. ifneq ($(call cc-option, -mpreferred-stack-boundary=4),) |