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| author |   Vasily Gorbik <gor@linux.ibm.com> | 2018-06-12 15:52:01 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-06-25 10:14:39 +0200 |
| commit | a1d7d91f105413750b5c8fb6a13a8c969a8b1f81 (patch) | |
| tree | 72641393b864cccad15952aafee5612913b53eb5 | |
| parent | s390/als: avoid .init.* sections usage (diff) | |
| download | linux-dev-a1d7d91f105413750b5c8fb6a13a8c969a8b1f81.tar.xz linux-dev-a1d7d91f105413750b5c8fb6a13a8c969a8b1f81.zip | |
s390/decompressor: avoid reusing uncompressed image objects
Re-compile ebcdic.c and sclp_early_core.c for the decompressor,
using proper decompressor CFLAGS. This also allows to potentially use
instrumentation for those files when built for the main kernel image.
With kbuild there is no easy way to re-compile a source file from
another directory. Bypass ugly rules and Makefile meta-programming
with relative path includes of original files.
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>
| -rw-r--r-- | arch/s390/boot/Makefile | 16 | ||||
| -rw-r--r-- | arch/s390/boot/compressed/Makefile | 4 | ||||
| -rw-r--r-- | arch/s390/boot/ebcdic.c | 2 | ||||
| -rw-r--r-- | arch/s390/boot/sclp_early_core.c | 2 | ||||
| -rw-r--r-- | drivers/s390/char/Makefile | 5 |
5 files changed, 15 insertions, 14 deletions
diff --git a/arch/s390/boot/Makefile b/arch/s390/boot/Makefile index 05e92d43d383..5cf30b732eb6 100644 --- a/arch/s390/boot/Makefile +++ b/arch/s390/boot/Makefile @@ -15,14 +15,18 @@ KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR) # message if the kernel is started on a machine which is too old # ifneq ($(CC_FLAGS_MARCH),-march=z900) -AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH) -AFLAGS_head.o += -march=z900 -CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH) -CFLAGS_als.o += -march=z900 +AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH) +AFLAGS_head.o += -march=z900 +CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH) +CFLAGS_als.o += -march=z900 +CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_MARCH) +CFLAGS_sclp_early_core.o += -march=z900 endif -obj-y := head.o als.o -targets := bzImage startup.a $(obj-y) +CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char + +obj-y := head.o als.o ebcdic.o sclp_early_core.o +targets := bzImage setup.a $(obj-y) subdir- := compressed OBJECTS := $(addprefix $(obj)/,$(obj-y)) diff --git a/arch/s390/boot/compressed/Makefile b/arch/s390/boot/compressed/Makefile index 855f7fdb1f61..86fe47509f75 100644 --- a/arch/s390/boot/compressed/Makefile +++ b/arch/s390/boot/compressed/Makefile @@ -16,9 +16,7 @@ targets += misc.o piggy.o sizes.h head.o KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR) KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR) -OBJECTS := $(objtree)/arch/s390/kernel/ebcdic.o -OBJECTS += $(objtree)/drivers/s390/char/sclp_early_core.o -OBJECTS += $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o +OBJECTS := $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T $(obj)/vmlinux: $(obj)/vmlinux.lds $(objtree)/arch/s390/boot/startup.a $(OBJECTS) diff --git a/arch/s390/boot/ebcdic.c b/arch/s390/boot/ebcdic.c new file mode 100644 index 000000000000..7391e7d36086 --- /dev/null +++ b/arch/s390/boot/ebcdic.c @@ -0,0 +1,2 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "../kernel/ebcdic.c" diff --git a/arch/s390/boot/sclp_early_core.c b/arch/s390/boot/sclp_early_core.c new file mode 100644 index 000000000000..5a19fd7020b5 --- /dev/null +++ b/arch/s390/boot/sclp_early_core.c @@ -0,0 +1,2 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "../../../drivers/s390/char/sclp_early_core.c" diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile index 0a4c13e1e76e..c6ab34f94b1b 100644 --- a/drivers/s390/char/Makefile +++ b/drivers/s390/char/Makefile @@ -12,11 +12,6 @@ GCOV_PROFILE_sclp_early_core.o := n KCOV_INSTRUMENT_sclp_early_core.o := n UBSAN_SANITIZE_sclp_early_core.o := n -ifneq ($(CC_FLAGS_MARCH),-march=z900) -CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_MARCH) -CFLAGS_sclp_early_core.o += -march=z900 -endif - CFLAGS_sclp_early_core.o += -D__NO_FORTIFY CFLAGS_REMOVE_sclp_early_core.o += $(CC_FLAGS_EXPOLINE) |