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authorMax Krummenacher <max.krummenacher@toradex.com>2018-03-13 11:32:58 +0100
committerMax Krummenacher <max.krummenacher@toradex.com>2018-03-13 11:32:58 +0100
commit6fb9f3c8a4992f67dcb3ce413df2e22e96b2d400 (patch)
tree6e3071b2f179a62b027669ac2a238383293bf941 /arch/x86/Makefile
parenta126a5e5dc2fcc5cb36af14c89b440cc8e3bab30 (diff)
parent8b5ab55d254f36e89b1b53aeac7223d2d102483e (diff)
Merge tag 'v4.4.121' into toradex_vf_4.4-nextColibri-VF_LXDE-Image_2.8b2.97-20180331
This is the 4.4.121 stable release
Diffstat (limited to 'arch/x86/Makefile')
-rw-r--r--arch/x86/Makefile8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 4086abca0b32..1f9caa041bf7 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -189,6 +189,14 @@ KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
KBUILD_CFLAGS += $(mflags-y)
KBUILD_AFLAGS += $(mflags-y)
+# Avoid indirect branches in kernel to deal with Spectre
+ifdef CONFIG_RETPOLINE
+ RETPOLINE_CFLAGS += $(call cc-option,-mindirect-branch=thunk-extern -mindirect-branch-register)
+ ifneq ($(RETPOLINE_CFLAGS),)
+ KBUILD_CFLAGS += $(RETPOLINE_CFLAGS) -DRETPOLINE
+ endif
+endif
+
archscripts: scripts_basic
$(Q)$(MAKE) $(build)=arch/x86/tools relocs