kbuild: add -fno-PIE

commit 8ae94224c9d72fc4d9aaac93b2d7833cf46d7141 upstream.

Debian started to build the gcc with -fPIE by default so the kernel
build ends before it starts properly with:
|kernel/bounds.c:1:0: error: code model kernel does not support PIC mode

Also add to KBUILD_AFLAGS due to:

|gcc -Wp,-MD,arch/x86/entry/vdso/vdso32/.note.o.d … -mfentry -DCC_USING_FENTRY … vdso/vdso32/note.S
|arch/x86/entry/vdso/vdso32/note.S:1:0: sorry, unimplemented: -mfentry isn’t supported for 32-bit in combination with -fpic

Tagging it stable so it is possible to compile recent stable kernels as
well.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Michal Marek <mmarek@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

diff --git a/Makefile b/Makefile
index 32dbd8513eee87c8b051d78a9fb221cc3cab7636..7b106de05fef96bff033edf66d864920e8d1e2e4 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -583,6 +583,8 @@ endif # $(dot-config)
 all: vmlinux
 
 KBUILD_CFLAGS  += $(call cc-disable-warning,maybe-uninitialized,)
+KBUILD_CFLAGS  += $(call cc-option,-fno-PIE)
+KBUILD_AFLAGS  += $(call cc-option,-fno-PIE)
 
 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
 KBUILD_CFLAGS  += -Os