From: Philipp Rudo Date: Fri, 13 Jul 2018 23:59:09 +0000 (-0700) Subject: x86/purgatory: add missing FORCE to Makefile target X-Git-Tag: v4.18-rc5~5^2~5 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=fa8cbda88db12e632a8987c94b66f5caf25bcec4;p=thirdparty%2Fkernel%2Flinux.git x86/purgatory: add missing FORCE to Makefile target - Build the kernel without the fix - Add some flag to the purgatories KBUILD_CFLAGS,I used -fno-asynchronous-unwind-tables - Re-build the kernel When you look at makes output you see that sha256.o is not re-build in the last step. Also readelf -S still shows the .eh_frame section for sha256.o. With the fix sha256.o is rebuilt in the last step. Without FORCE make does not detect changes only made to the command line options. So object files might not be re-built even when they should be. Fix this by adding FORCE where it is missing. Link: http://lkml.kernel.org/r/20180704110044.29279-2-prudo@linux.ibm.com Fixes: df6f2801f511 ("kernel/kexec_file.c: move purgatories sha256 to common code") Signed-off-by: Philipp Rudo Acked-by: Dave Young Cc: Ingo Molnar Cc: Thomas Gleixner Cc: [4.17+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index 2e9ee023e6bcf..81a8e33115ad5 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -6,7 +6,7 @@ purgatory-y := purgatory.o stack.o setup-x86_$(BITS).o sha256.o entry64.o string targets += $(purgatory-y) PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y)) -$(obj)/sha256.o: $(srctree)/lib/sha256.c +$(obj)/sha256.o: $(srctree)/lib/sha256.c FORCE $(call if_changed_rule,cc_o_c) LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib -z nodefaultlib