From c4e789572557aa147b13bf7fe09cc99663ed0cf5 Mon Sep 17 00:00:00 2001 From: Vasily Gorbik Date: Mon, 27 Jun 2022 14:50:53 +0200 Subject: s390/nospec: build expoline.o for modules_prepare target When CONFIG_EXPOLINE_EXTERN is used expoline thunks are generated from arch/s390/lib/expoline.S and postlinked into every module. This is also true for external modules. Add expoline.o build to the modules_prepare target. Fixes: 1d2ad084800e ("s390/nospec: add an option to use thunk-extern") Reported-by: Joe Lawrence Tested-by: Sumanth Korikkar Acked-by: Sumanth Korikkar Tested-by: C. Erastus Toe Tested-by: Joe Lawrence Link: https://lore.kernel.org/r/patch-1.thread-d13b6c.git-a2387a74dc49.your-ad-here.call-01656331067-ext-4899@work.hours Signed-off-by: Vasily Gorbik Signed-off-by: Alexander Gordeev --- arch/s390/Makefile | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'arch/s390/Makefile') diff --git a/arch/s390/Makefile b/arch/s390/Makefile index 495c68a4df1e..fc72a35a1f07 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -82,7 +82,7 @@ endif ifdef CONFIG_EXPOLINE ifdef CONFIG_EXPOLINE_EXTERN - KBUILD_LDFLAGS_MODULE += arch/s390/lib/expoline.o + KBUILD_LDFLAGS_MODULE += arch/s390/lib/expoline/expoline.o CC_FLAGS_EXPOLINE := -mindirect-branch=thunk-extern CC_FLAGS_EXPOLINE += -mfunction-return=thunk-extern else @@ -163,6 +163,12 @@ vdso_prepare: prepare0 $(Q)$(MAKE) $(build)=arch/s390/kernel/vdso64 include/generated/vdso64-offsets.h $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ $(build)=arch/s390/kernel/vdso32 include/generated/vdso32-offsets.h) + +ifdef CONFIG_EXPOLINE_EXTERN +modules_prepare: expoline_prepare +expoline_prepare: prepare0 + $(Q)$(MAKE) $(build)=arch/s390/lib/expoline arch/s390/lib/expoline/expoline.o +endif endif # Don't use tabs in echo arguments -- cgit v1.2.3