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authorHeiko Carstens <heiko.carstens@de.ibm.com>2015-02-12 13:08:27 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-03-25 11:49:33 +0100
commit5a79859ae0f35d25c67a03e82bf0c80592f16a39 (patch)
tree37264d49f069812f19ced94e6ae171814fb7e498 /arch/s390/Makefile
parent1833c9f647e9bda1cd24653ff8f9c207b5f5b911 (diff)
s390: remove 31 bit support
Remove the 31 bit support in order to reduce maintenance cost and effectively remove dead code. Since a couple of years there is no distribution left that comes with a 31 bit kernel. The 31 bit kernel also has been broken since more than a year before anybody noticed. In addition I added a removal warning to the kernel shown at ipl for 5 minutes: a960062e5826 ("s390: add 31 bit warning message") which let everybody know about the plan to remove 31 bit code. We didn't get any response. Given that the last 31 bit only machine was introduced in 1999 let's remove the code. Anybody with 31 bit user space code can still use the compat mode. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/Makefile')
-rw-r--r--arch/s390/Makefile16
1 files changed, 1 insertions, 15 deletions
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index acb6859c6a95..667b1bca5681 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -13,15 +13,6 @@
# Copyright (C) 1994 by Linus Torvalds
#
-ifndef CONFIG_64BIT
-LD_BFD := elf32-s390
-LDFLAGS := -m elf_s390
-KBUILD_CFLAGS += -m31
-KBUILD_AFLAGS += -m31
-UTS_MACHINE := s390
-STACK_SIZE := 8192
-CHECKFLAGS += -D__s390__ -msize-long
-else
LD_BFD := elf64-s390
LDFLAGS := -m elf64_s390
KBUILD_AFLAGS_MODULE += -fPIC
@@ -31,11 +22,9 @@ KBUILD_AFLAGS += -m64
UTS_MACHINE := s390x
STACK_SIZE := 16384
CHECKFLAGS += -D__s390__ -D__s390x__
-endif
export LD_BFD
-mflags-$(CONFIG_MARCH_G5) := -march=g5
mflags-$(CONFIG_MARCH_Z900) := -march=z900
mflags-$(CONFIG_MARCH_Z990) := -march=z990
mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109
@@ -47,7 +36,6 @@ mflags-$(CONFIG_MARCH_Z13) := -march=z13
aflags-y += $(mflags-y)
cflags-y += $(mflags-y)
-cflags-$(CONFIG_MARCH_G5_TUNE) += -mtune=g5
cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900
cflags-$(CONFIG_MARCH_Z990_TUNE) += -mtune=z990
cflags-$(CONFIG_MARCH_Z9_109_TUNE) += -mtune=z9-109
@@ -104,7 +92,7 @@ KBUILD_AFLAGS += $(aflags-y)
OBJCOPYFLAGS := -O binary
head-y := arch/s390/kernel/head.o
-head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
+head-y += arch/s390/kernel/head64.o
# See arch/s390/Kbuild for content of core part of the kernel
core-y += arch/s390/
@@ -129,9 +117,7 @@ zfcpdump:
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
vdso_install:
-ifeq ($(CONFIG_64BIT),y)
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
-endif
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
archclean: