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| author |   Vasily Gorbik <gor@linux.ibm.com> | 2018-06-15 12:28:05 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-06-25 10:14:37 +0200 |
| commit | 76bf9d6cef5788c769af987ff6f8ece40c6ab152 (patch) | |
| tree | 51c0983ae98cf57dd6516b7079ae473bb49816a9 /arch/s390/boot/compressed/Makefile | |
| parent | s390/build: remove obsolete -mkernel-backchain flag (diff) | |
| download | linux-dev-76bf9d6cef5788c769af987ff6f8ece40c6ab152.tar.xz linux-dev-76bf9d6cef5788c769af987ff6f8ece40c6ab152.zip | |
s390/decompressor: correct build flags
The decompressor requires its own set of cc and asm flags, to avoid
building with features which do not make sense at such an early boot stage
(e.g. expoline, ftrace).
Currently cc flags are already set for the decompressor, but "cflags-y"
is not exported and hence empty. To fix that and to add asm flags, define
and export KBUILD_AFLAGS_DECOMPRESSOR and KBUILD_CFLAGS_DECOMPRESSOR
and rely on them in the decompressor's Makefile.
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/boot/compressed/Makefile')
| -rw-r--r-- | arch/s390/boot/compressed/Makefile | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/arch/s390/boot/compressed/Makefile b/arch/s390/boot/compressed/Makefile index 5766f7b9b271..4f81d14c9f35 100644 --- a/arch/s390/boot/compressed/Makefile +++ b/arch/s390/boot/compressed/Makefile @@ -6,20 +6,15 @@ # KCOV_INSTRUMENT := n +GCOV_PROFILE := n +UBSAN_SANITIZE := n targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4 targets += misc.o piggy.o sizes.h head.o -KBUILD_CFLAGS := -m64 -D__KERNEL__ -O2 -KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY -KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks -msoft-float -KBUILD_CFLAGS += -fno-asynchronous-unwind-tables -KBUILD_CFLAGS += $(call cc-option,-mpacked-stack) -KBUILD_CFLAGS += $(call cc-option,-ffreestanding) - -GCOV_PROFILE := n -UBSAN_SANITIZE := n +KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR) +KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR) OBJECTS := $(addprefix $(objtree)/arch/s390/kernel/, head.o ebcdic.o als.o) OBJECTS += $(objtree)/drivers/s390/char/sclp_early_core.o |