25 files changed, 109 insertions, 134 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 1846fbfd6bf2..6fe532d82417 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -23,14 +23,14 @@ config GENERIC_BUST_SPINLOCK
 
 mainmenu "Linux Kernel Configuration"
 
-config ARCH_S390
+config S390
         bool
         default y
 
 config UID16
         bool
         default y
-        depends on ARCH_S390X = 'n'
+        depends on !64BIT
 
 source "init/Kconfig"
 
@@ -38,20 +38,12 @@ menu "Base setup"
 
 comment "Processor type and features"
 
-config ARCH_S390X
+config 64BIT
         bool "64 bit kernel"
         help
           Select this option if you have a 64 bit IBM zSeries machine
           and want to use the 64 bit addressing mode.
 
-config 64BIT
-        def_bool ARCH_S390X
-
-config ARCH_S390_31
-        bool
-        depends on ARCH_S390X = 'n'
-        default y
-
 config SMP
         bool "Symmetric multi-processing support"
         ---help---
@@ -101,20 +93,15 @@ config MATHEMU
           on older S/390 machines. Say Y unless you know your machine doesn't
           need this.
 
-config S390_SUPPORT
+config COMPAT
         bool "Kernel support for 31 bit emulation"
-        depends on ARCH_S390X
+        depends on 64BIT
         help
           Select this option if you want to enable your system kernel to
           handle system-calls from ELF binaries for 31 bit ESA.  This option
           (and some other stuff like libraries and such) is needed for
           executing 31 bit applications.  It is safe to say "Y".
 
-config COMPAT
-        bool
-        depends on S390_SUPPORT
-        default y
-
 config SYSVIPC_COMPAT
         bool
         depends on COMPAT && SYSVIPC
@@ -122,7 +109,7 @@ config SYSVIPC_COMPAT
 
 config BINFMT_ELF32
         tristate "Kernel support for 31 bit ELF binaries"
-        depends on S390_SUPPORT
+        depends on COMPAT
         help
           This allows you to run 32-bit Linux/ELF binaries on your zSeries
           in 64 bit mode. Everybody wants this; say Y.
@@ -135,7 +122,7 @@ choice
 
 config MARCH_G5
         bool "S/390 model G5 and G6"
-        depends on ARCH_S390_31
+        depends on !64BIT
         help
           Select this to build a 31 bit kernel that works
           on all S/390 and zSeries machines.
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index 73a09a6ee6c8..6c6b197898d0 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -13,16 +13,14 @@
 # Copyright (C) 1994 by Linus Torvalds
 #
 
-ifdef CONFIG_ARCH_S390_31
+ifndef CONFIG_64BIT
 LDFLAGS         := -m elf_s390
 CFLAGS          += -m31
 AFLAGS          += -m31
 UTS_MACHINE     := s390
 STACK_SIZE      := 8192
 CHECKFLAGS      += -D__s390__
-endif
-
-ifdef CONFIG_ARCH_S390X
+else
 LDFLAGS         := -m elf64_s390
 MODFLAGS        += -fpic -D__PIC__
 CFLAGS          += -m64
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index dee6ab54984d..d06a8d71c71d 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -40,7 +40,7 @@
 
 #define TOD_MICRO       0x01000                 /* nr. of TOD clock units
                                                    for 1 microsecond */
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 
 #define APPLDATA_START_INTERVAL_REC 0x00        /* Function codes for */
 #define APPLDATA_STOP_REC           0x01        /* DIAG 0xDC      */
@@ -54,13 +54,13 @@
 #define APPLDATA_GEN_EVENT_RECORD   0x82
 #define APPLDATA_START_CONFIG_REC   0x83
 
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 
 
 /*
  * Parameter list for DIAGNOSE X'DC'
  */
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 struct appldata_parameter_list {
         u16 diag;               /* The DIAGNOSE code X'00DC'          */
         u8  function;           /* The function code for the DIAGNOSE */
@@ -82,7 +82,7 @@ struct appldata_parameter_list {
         u64 product_id_addr;
         u64 buffer_addr;
 };
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 
 /*
  * /proc entries (sysctl)
diff --git a/arch/s390/crypto/crypt_s390.h b/arch/s390/crypto/crypt_s390.h
index d6712cfa6def..d1c259a7fe33 100644
--- a/arch/s390/crypto/crypt_s390.h
+++ b/arch/s390/crypto/crypt_s390.h
@@ -112,7 +112,7 @@ struct crypt_s390_query_status {
  * [ret] is the variable to receive the error code
  * [ERR] is the error code value
  */
-#ifndef __s390x__
+#ifndef CONFIG_64BIT
 #define __crypt_s390_fixup \
         ".section .fixup,\"ax\" \n"     \
         "7:     lhi     %0,%h[e1] \n"   \
@@ -129,7 +129,7 @@ struct crypt_s390_query_status {
         "       .long   0b,7b \n"       \
         "       .long   1b,8b \n"       \
         ".previous"
-#else /* __s390x__ */
+#else /* CONFIG_64BIT */
 #define __crypt_s390_fixup \
         ".section .fixup,\"ax\" \n"     \
         "7:     lhi     %0,%h[e1] \n"   \
@@ -142,7 +142,7 @@ struct crypt_s390_query_status {
         "       .quad   0b,7b \n"       \
         "       .quad   1b,8b \n"       \
         ".previous"
-#endif /* __s390x__ */
+#endif /* CONFIG_64BIT */
 
 /*
  * Standard code for setting the result of s390 crypto instructions.
@@ -150,10 +150,10 @@ struct crypt_s390_query_status {
  * [result]: the register containing the result (e.g. second operand length
  * to compute number of processed bytes].
  */
-#ifndef __s390x__
+#ifndef CONFIG_64BIT
 #define __crypt_s390_set_result \
         "       lr      %0,%[result] \n"
-#else /* __s390x__ */
+#else /* CONFIG_64BIT */
 #define __crypt_s390_set_result \
         "       lgr     %0,%[result] \n"
 #endif
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index f195c7ea1d7b..7d23edc6facb 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -6,7 +6,7 @@
 CONFIG_MMU=y
 CONFIG_RWSEM_XCHGADD_ALGORITHM=y
 CONFIG_GENERIC_CALIBRATE_DELAY=y
-CONFIG_ARCH_S390=y
+CONFIG_S390=y
 CONFIG_UID16=y
 
 #
@@ -89,9 +89,7 @@ CONFIG_DEFAULT_IOSCHED="anticipatory"
 #
 # Processor type and features
 #
-# CONFIG_ARCH_S390X is not set
 # CONFIG_64BIT is not set
-CONFIG_ARCH_S390_31=y
 CONFIG_SMP=y
 CONFIG_NR_CPUS=32
 CONFIG_HOTPLUG_CPU=y
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 7434c32bc631..4865e4b49464 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -8,31 +8,26 @@ obj-y	:=  bitmap.o traps.o time.o process.o \
             setup.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \
             semaphore.o s390_ext.o debug.o profile.o irq.o reipl_diag.o
 
+obj-y   += $(if $(CONFIG_64BIT),entry64.o,entry.o)
+obj-y   += $(if $(CONFIG_64BIT),reipl64.o,reipl.o)
+
 extra-y                         += head.o init_task.o vmlinux.lds
 
 obj-$(CONFIG_MODULES)           += s390_ksyms.o module.o
 obj-$(CONFIG_SMP)               += smp.o
 
-obj-$(CONFIG_S390_SUPPORT)      += compat_linux.o compat_signal.o \
+obj-$(CONFIG_COMPAT)            += compat_linux.o compat_signal.o \
                                         compat_ioctl.o compat_wrapper.o \
                                         compat_exec_domain.o
 obj-$(CONFIG_BINFMT_ELF32)      += binfmt_elf32.o
 
-obj-$(CONFIG_ARCH_S390_31)      += entry.o reipl.o
-obj-$(CONFIG_ARCH_S390X)        += entry64.o reipl64.o
-
 obj-$(CONFIG_VIRT_TIMER)        += vtime.o
 
 # Kexec part
 S390_KEXEC_OBJS := machine_kexec.o crash.o
-ifeq ($(CONFIG_ARCH_S390X),y)
-S390_KEXEC_OBJS += relocate_kernel64.o
-else
-S390_KEXEC_OBJS += relocate_kernel.o
-endif
+S390_KEXEC_OBJS += $(if $(CONFIG_64BIT),relocate_kernel64.o,relocate_kernel.o)
 obj-$(CONFIG_KEXEC) += $(S390_KEXEC_OBJS)
 
-
 #
 # This is just to get the dependencies...
 #
diff --git a/arch/s390/kernel/cpcmd.c b/arch/s390/kernel/cpcmd.c
index d47fecb42cc5..4ef44e536b2c 100644
--- a/arch/s390/kernel/cpcmd.c
+++ b/arch/s390/kernel/cpcmd.c
@@ -39,7 +39,7 @@ int  __cpcmd(const char *cmd, char *response, int rlen, int *response_code)
 
         if (response != NULL && rlen > 0) {
                 memset(response, 0, rlen);
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
                 asm volatile (  "lra    2,0(%2)\n"
                                 "lr     4,%3\n"
                                 "o      4,%6\n"
@@ -55,7 +55,7 @@ int  __cpcmd(const char *cmd, char *response, int rlen, int *response_code)
                                 : "a" (cpcmd_buf), "d" (cmdlen),
                                 "a" (response), "d" (rlen), "m" (mask)
                                 : "cc", "2", "3", "4", "5" );
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
                 asm volatile (  "lrag   2,0(%2)\n"
                                 "lgr    4,%3\n"
                                 "o      4,%6\n"
@@ -73,11 +73,11 @@ int  __cpcmd(const char *cmd, char *response, int rlen, int *response_code)
                                 : "a" (cpcmd_buf), "d" (cmdlen),
                                 "a" (response), "d" (rlen), "m" (mask)
                                 : "cc", "2", "3", "4", "5" );
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
                 EBCASC(response, rlen);
         } else {
                 return_len = 0;
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
                 asm volatile (  "lra    2,0(%1)\n"
                                 "lr     3,%2\n"
                                 "diag   2,3,0x8\n"
@@ -85,7 +85,7 @@ int  __cpcmd(const char *cmd, char *response, int rlen, int *response_code)
                                 : "=d" (return_code)
                                 : "a" (cpcmd_buf), "d" (cmdlen)
                                 : "2", "3"  );
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
                 asm volatile (  "lrag   2,0(%1)\n"
                                 "lgr    3,%2\n"
                                 "sam31\n"
@@ -95,7 +95,7 @@ int  __cpcmd(const char *cmd, char *response, int rlen, int *response_code)
                                 : "=d" (return_code)
                                 : "a" (cpcmd_buf), "d" (cmdlen)
                                 : "2", "3" );
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
         }
         spin_unlock_irqrestore(&cpcmd_lock, flags);
         if (response_code != NULL)
@@ -105,7 +105,7 @@ int  __cpcmd(const char *cmd, char *response, int rlen, int *response_code)
 
 EXPORT_SYMBOL(__cpcmd);
 
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 int cpcmd(const char *cmd, char *response, int rlen, int *response_code)
 {
         char *lowbuf;
@@ -129,4 +129,4 @@ int cpcmd(const char *cmd, char *response, int rlen, int *response_code)
 }
 
 EXPORT_SYMBOL(cpcmd);
-#endif          /* CONFIG_ARCH_S390X */
+#endif          /* CONFIG_64BIT */
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 4eb71ffcf484..369ab4413ec7 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -213,7 +213,7 @@ sysc_nr_ok:
         mvc     SP_ARGS(8,%r15),SP_R7(%r15)
 sysc_do_restart:
         larl    %r10,sys_call_table
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
         tm      __TI_flags+5(%r9),(_TIF_31BIT>>16)  # running in 31 bit mode ?
         jno     sysc_noemu
         larl    %r10,sys_call_table_emu  # use 31 bit emulation system calls
@@ -361,7 +361,7 @@ sys_clone_glue:
         la      %r2,SP_PTREGS(%r15)    # load pt_regs
         jg      sys_clone              # branch to sys_clone
 
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
 sys32_clone_glue: 
         la      %r2,SP_PTREGS(%r15)    # load pt_regs
         jg      sys32_clone            # branch to sys32_clone
@@ -383,7 +383,7 @@ sys_execve_glue:
         bnz     0(%r12)               # it did fail -> store result in gpr2
         b       6(%r12)               # SKIP STG 2,SP_R2(15) in
                                       # system_call/sysc_tracesys
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
 sys32_execve_glue:        
         la      %r2,SP_PTREGS(%r15)   # load pt_regs
         lgr     %r12,%r14             # save return address
@@ -398,7 +398,7 @@ sys_sigreturn_glue:
         la      %r2,SP_PTREGS(%r15)   # load pt_regs as parameter
         jg      sys_sigreturn         # branch to sys_sigreturn
 
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
 sys32_sigreturn_glue:     
         la      %r2,SP_PTREGS(%r15)   # load pt_regs as parameter
         jg      sys32_sigreturn       # branch to sys32_sigreturn
@@ -408,7 +408,7 @@ sys_rt_sigreturn_glue:
         la      %r2,SP_PTREGS(%r15)   # load pt_regs as parameter
         jg      sys_rt_sigreturn      # branch to sys_sigreturn
 
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
 sys32_rt_sigreturn_glue:     
         la      %r2,SP_PTREGS(%r15)   # load pt_regs as parameter
         jg      sys32_rt_sigreturn    # branch to sys32_sigreturn
@@ -429,7 +429,7 @@ sys_sigsuspend_glue:
         la      %r14,6(%r14)          # skip store of return value
         jg      sys_sigsuspend        # branch to sys_sigsuspend
 
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
 sys32_sigsuspend_glue:    
         llgfr   %r4,%r4               # unsigned long                   
         lgr     %r5,%r4               # move mask back
@@ -449,7 +449,7 @@ sys_rt_sigsuspend_glue:
         la      %r14,6(%r14)          # skip store of return value
         jg      sys_rt_sigsuspend     # branch to sys_rt_sigsuspend
 
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
 sys32_rt_sigsuspend_glue: 
         llgfr   %r3,%r3               # size_t                  
         lgr     %r4,%r3               # move sigsetsize parameter
@@ -464,7 +464,7 @@ sys_sigaltstack_glue:
         la      %r4,SP_PTREGS(%r15)   # load pt_regs as parameter
         jg      sys_sigaltstack       # branch to sys_sigreturn
 
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
 sys32_sigaltstack_glue:
         la      %r4,SP_PTREGS(%r15)   # load pt_regs as parameter
         jg      sys32_sigaltstack_wrapper # branch to sys_sigreturn
@@ -1009,7 +1009,7 @@ sys_call_table:
 #include "syscalls.S"
 #undef SYSCALL
 
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
 
 #define SYSCALL(esa,esame,emu)  .long emu
         .globl  sys_call_table_emu
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index d31a97c89f68..ea88d066bf04 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -30,7 +30,7 @@
 #include <asm/thread_info.h>
 #include <asm/page.h>
 
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 #define ARCH_OFFSET     4
 #else
 #define ARCH_OFFSET     0
@@ -539,7 +539,7 @@ ipl_devno:
         .word 0
 .endm
 
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 #include "head64.S"
 #else
 #include "head31.S"
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index 607d506689c8..c271cdab58e2 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -37,11 +37,11 @@
 #define DEBUGP(fmt , ...)
 #endif
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 #define PLT_ENTRY_SIZE 12
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
 #define PLT_ENTRY_SIZE 20
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 
 void *module_alloc(unsigned long size)
 {
@@ -294,17 +294,17 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
                         unsigned int *ip;
                         ip = me->module_core + me->arch.plt_offset +
                                 info->plt_offset;
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
                         ip[0] = 0x0d105810; /* basr 1,0; l 1,6(1); br 1 */
                         ip[1] = 0x100607f1;
                         ip[2] = val;
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
                         ip[0] = 0x0d10e310; /* basr 1,0; lg 1,10(1); br 1 */
                         ip[1] = 0x100a0004;
                         ip[2] = 0x07f10000;
                         ip[3] = (unsigned int) (val >> 32);
                         ip[4] = (unsigned int) val;
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
                         info->plt_initialized = 1;
                 }
                 if (r_type == R_390_PLTOFF16 ||
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 78b64fe5e7c2..a942bf2d58e9 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -235,7 +235,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long new_stackp,
         /* Save access registers to new thread structure. */
         save_access_regs(&p->thread.acrs[0]);
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
         /*
          * save fprs to current->thread.fp_regs to merge them with
          * the emulated registers and then copy the result to the child.
@@ -247,7 +247,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long new_stackp,
         /* Set a new TLS ?  */
         if (clone_flags & CLONE_SETTLS)
                 p->thread.acrs[0] = regs->gprs[6];
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
         /* Save the fpu registers to new thread structure. */
         save_fp_regs(&p->thread.fp_regs);
         p->thread.user_seg = __pa((unsigned long) p->mm->pgd) | _REGION_TABLE;
@@ -260,7 +260,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long new_stackp,
                         p->thread.acrs[1] = (unsigned int) regs->gprs[6];
                 }
         }
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
         /* start new process with ar4 pointing to the correct address space */
         p->thread.mm_segment = get_fs();
         /* Don't copy debug registers */
@@ -339,16 +339,16 @@ out:
  */
 int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs)
 {
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
         /*
          * save fprs to current->thread.fp_regs to merge them with
          * the emulated registers and then copy the result to the dump.
          */
         save_fp_regs(&current->thread.fp_regs);
         memcpy(fpregs, &current->thread.fp_regs, sizeof(s390_fp_regs));
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
         save_fp_regs(fpregs);
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
         return 1;
 }
 
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 06afa3103ace..8ecda6d66de4 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -42,7 +42,7 @@
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
 
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
 #include "compat_ptrace.h"
 #endif
 
@@ -59,7 +59,7 @@ FixPerRegisters(struct task_struct *task)
         
         if (per_info->single_step) {
                 per_info->control_regs.bits.starting_addr = 0;
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
                 if (test_thread_flag(TIF_31BIT))
                         per_info->control_regs.bits.ending_addr = 0x7fffffffUL;
                 else
@@ -112,7 +112,7 @@ ptrace_disable(struct task_struct *child)
         clear_single_step(child);
 }
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 # define __ADDR_MASK 3
 #else
 # define __ADDR_MASK 7
@@ -138,7 +138,7 @@ peek_user(struct task_struct *child, addr_t addr, addr_t data)
          * an alignment of 4. Programmers from hell...
          */
         mask = __ADDR_MASK;
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
         if (addr >= (addr_t) &dummy->regs.acrs &&
             addr < (addr_t) &dummy->regs.orig_gpr2)
                 mask = 3;
@@ -160,7 +160,7 @@ peek_user(struct task_struct *child, addr_t addr, addr_t data)
                  * access registers are stored in the thread structure
                  */
                 offset = addr - (addr_t) &dummy->regs.acrs;
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
                 /*
                  * Very special case: old & broken 64 bit gdb reading
                  * from acrs[15]. Result is a 64 bit value. Read the
@@ -218,7 +218,7 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data)
          * an alignment of 4. Programmers from hell indeed...
          */
         mask = __ADDR_MASK;
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
         if (addr >= (addr_t) &dummy->regs.acrs &&
             addr < (addr_t) &dummy->regs.orig_gpr2)
                 mask = 3;
@@ -231,13 +231,13 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data)
                  * psw and gprs are stored on the stack
                  */
                 if (addr == (addr_t) &dummy->regs.psw.mask &&
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
                     data != PSW_MASK_MERGE(PSW_USER32_BITS, data) &&
 #endif
                     data != PSW_MASK_MERGE(PSW_USER_BITS, data))
                         /* Invalid psw mask. */
                         return -EINVAL;
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
                 if (addr == (addr_t) &dummy->regs.psw.addr)
                         /* I'd like to reject addresses without the
                            high order bit but older gdb's rely on it */
@@ -250,7 +250,7 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data)
                  * access registers are stored in the thread structure
                  */
                 offset = addr - (addr_t) &dummy->regs.acrs;
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
                 /*
                  * Very special case: old & broken 64 bit gdb writing
                  * to acrs[15] with a 64 bit value. Ignore the lower
@@ -357,7 +357,7 @@ do_ptrace_normal(struct task_struct *child, long request, long addr, long data)
         return ptrace_request(child, request, addr, data);
 }
 
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
 /*
  * Now the fun part starts... a 31 bit program running in the
  * 31 bit emulation tracing another program. PTRACE_PEEKTEXT,
@@ -629,7 +629,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
                         return peek_user(child, addr, data);
                 if (request == PTRACE_POKEUSR && addr == PT_IEEE_IP)
                         return poke_user(child, addr, data);
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
                 if (request == PTRACE_PEEKUSR &&
                     addr == PT32_IEEE_IP && test_thread_flag(TIF_31BIT))
                         return peek_user_emu31(child, addr, data);
@@ -695,7 +695,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
 
         /* Do requests that differ for 31/64 bit */
         default:
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
                 if (test_thread_flag(TIF_31BIT))
                         return do_ptrace_emu31(child, request, addr, data);
 #endif
diff --git a/arch/s390/kernel/reipl_diag.c b/arch/s390/kernel/reipl_diag.c
index 83cb42bc0b76..1f33951ba439 100644
--- a/arch/s390/kernel/reipl_diag.c
+++ b/arch/s390/kernel/reipl_diag.c
@@ -26,7 +26,7 @@ void reipl_diag(void)
                 "   st   %%r4,%0\n"
                 "   st   %%r5,%1\n"
                 ".section __ex_table,\"a\"\n"
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
                 "   .align 8\n"
                 "   .quad 0b, 0b\n"
 #else
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 31e7b19348b7..b03847d100d9 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -427,7 +427,7 @@ setup_lowcore(void)
                 __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0) + PAGE_SIZE;
         lc->current_task = (unsigned long) init_thread_union.thread_info.task;
         lc->thread_info = (unsigned long) &init_thread_union;
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
         if (MACHINE_HAS_IEEE) {
                 lc->extended_save_area_addr = (__u32)
                         __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0);
@@ -562,21 +562,21 @@ setup_arch(char **cmdline_p)
         /*
          * print what head.S has found out about the machine
          */
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
         printk((MACHINE_IS_VM) ?
                "We are running under VM (31 bit mode)\n" :
                "We are running native (31 bit mode)\n");
         printk((MACHINE_HAS_IEEE) ?
                "This machine has an IEEE fpu\n" :
                "This machine has no IEEE fpu\n");
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
         printk((MACHINE_IS_VM) ?
                "We are running under VM (64 bit mode)\n" :
                "We are running native (64 bit mode)\n");
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 
         ROOT_DEV = Root_RAM0;
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
         memory_end = memory_size & ~0x400000UL;  /* align memory end to 4MB */
         /*
          * We need some free virtual space to be able to do vmalloc.
@@ -585,9 +585,9 @@ setup_arch(char **cmdline_p)
          */
         if (memory_end > 1920*1024*1024)
                 memory_end = 1920*1024*1024;
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
         memory_end = memory_size & ~0x200000UL;  /* detected in head.s */
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 
         init_mm.start_code = PAGE_OFFSET;
         init_mm.end_code = (unsigned long) &_etext;
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 13592d00a10f..6ae4a77270b5 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -501,7 +501,7 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
 
         if (signr > 0) {
                 /* Whee!  Actually deliver the signal.  */
-#ifdef CONFIG_S390_SUPPORT
+#ifdef CONFIG_COMPAT
                 if (test_thread_flag(TIF_31BIT)) {
                         extern void handle_signal32(unsigned long sig,
                                                     struct k_sigaction *ka,
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index bd5b311006be..e10f4ca00499 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -402,7 +402,7 @@ static void smp_ext_bitcall_others(ec_bit_sig sig)
         }
 }
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 /*
  * this function sends a 'purge tlb' signal to another CPU.
  */
@@ -416,7 +416,7 @@ void smp_ptlb_all(void)
         on_each_cpu(smp_ptlb_callback, NULL, 0, 1);
 }
 EXPORT_SYMBOL(smp_ptlb_all);
-#endif /* ! CONFIG_ARCH_S390X */
+#endif /* ! CONFIG_64BIT */
 
 /*
  * this function sends a 'reschedule' IPI to another CPU.
@@ -783,7 +783,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
                 if (stack == 0ULL)
                         panic("smp_boot_cpus failed to allocate memory\n");
                 lowcore_ptr[i]->panic_stack = stack + (PAGE_SIZE);
-#ifndef __s390x__
+#ifndef CONFIG_64BIT
                 if (MACHINE_HAS_IEEE) {
                         lowcore_ptr[i]->extended_save_area_addr =
                                 (__u32) __get_free_pages(GFP_KERNEL,0);
@@ -793,7 +793,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
                 }
 #endif
         }
-#ifndef __s390x__
+#ifndef CONFIG_64BIT
         if (MACHINE_HAS_IEEE)
                 ctl_set_bit(14, 29); /* enable extended save area */
 #endif
diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
index efe6b83b53f7..6a63553493c5 100644
--- a/arch/s390/kernel/sys_s390.c
+++ b/arch/s390/kernel/sys_s390.c
@@ -26,9 +26,7 @@
 #include <linux/mman.h>
 #include <linux/file.h>
 #include <linux/utsname.h>
-#ifdef CONFIG_ARCH_S390X
 #include <linux/personality.h>
-#endif /* CONFIG_ARCH_S390X */
 
 #include <asm/uaccess.h>
 #include <asm/ipc.h>
@@ -121,7 +119,7 @@ out:
         return error;
 }
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 struct sel_arg_struct {
         unsigned long n;
         fd_set *inp, *outp, *exp;
@@ -138,7 +136,7 @@ asmlinkage long old_select(struct sel_arg_struct __user *arg)
         return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
 
 }
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 
 /*
  * sys_ipc() is the de-multiplexer for the SysV IPC calls..
@@ -211,7 +209,7 @@ asmlinkage long sys_ipc(uint call, int first, unsigned long second,
         return -EINVAL;
 }
 
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 asmlinkage long s390x_newuname(struct new_utsname __user *name)
 {
         int ret = sys_newuname(name);
@@ -235,12 +233,12 @@ asmlinkage long s390x_personality(unsigned long personality)
 
         return ret;
 }
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 
 /*
  * Wrapper function for sys_fadvise64/fadvise64_64
  */
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 
 asmlinkage long
 s390_fadvise64(int fd, u32 offset_high, u32 offset_low, size_t len, int advice)
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index c5bd36fae56b..95d109968619 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -67,13 +67,13 @@ extern pgm_check_handler_t do_monitor_call;
 
 #define stack_pointer ({ void **sp; asm("la %0,0(15)" : "=&d" (sp)); sp; })
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 #define FOURLONG "%08lx %08lx %08lx %08lx\n"
 static int kstack_depth_to_print = 12;
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
 #define FOURLONG "%016lx %016lx %016lx %016lx\n"
 static int kstack_depth_to_print = 20;
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 
 /*
  * For show_trace we have tree different stack to consider:
@@ -702,12 +702,12 @@ void __init trap_init(void)
         pgm_check_table[0x11] = &do_dat_exception;
         pgm_check_table[0x12] = &translation_exception;
         pgm_check_table[0x13] = &special_op_exception;
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
         pgm_check_table[0x38] = &do_dat_exception;
         pgm_check_table[0x39] = &do_dat_exception;
         pgm_check_table[0x3A] = &do_dat_exception;
         pgm_check_table[0x3B] = &do_dat_exception;
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
         pgm_check_table[0x15] = &operand_exception;
         pgm_check_table[0x1C] = &space_switch_exception;
         pgm_check_table[0x1D] = &hfp_sqrt_exception;
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 89fdb3808bc0..9289face3027 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -5,7 +5,7 @@
 #include <asm-generic/vmlinux.lds.h>
 #include <linux/config.h>
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
 OUTPUT_ARCH(s390)
 ENTRY(_start)
diff --git a/arch/s390/lib/Makefile b/arch/s390/lib/Makefile
index b701efa1f00e..d9b97b3c597f 100644
--- a/arch/s390/lib/Makefile
+++ b/arch/s390/lib/Makefile
@@ -4,6 +4,5 @@
 
 EXTRA_AFLAGS := -traditional
 
-lib-y += delay.o string.o
-lib-$(CONFIG_ARCH_S390_31) += uaccess.o spinlock.o
-lib-$(CONFIG_ARCH_S390X) += uaccess64.o spinlock.o
+lib-y += delay.o string.o spinlock.o
+lib-y += $(if $(CONFIG_64BIT),uaccess64.o,uaccess.o)
diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c
index 2dc14e9c8327..68d79c502081 100644
--- a/arch/s390/lib/spinlock.c
+++ b/arch/s390/lib/spinlock.c
@@ -29,7 +29,7 @@ __setup("spin_retry=", spin_retry_setup);
 static inline void
 _diag44(void)
 {
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
         if (MACHINE_HAS_DIAG44)
 #endif
                 asm volatile("diag 0,0,0x44");
diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c
index 506a33b51e4f..a9566bcab682 100644
--- a/arch/s390/mm/extmem.c
+++ b/arch/s390/mm/extmem.c
@@ -143,7 +143,7 @@ dcss_diag (__u8 func, void *parameter,
         rx = (unsigned long) parameter;
         ry = (unsigned long) func;
         __asm__ __volatile__(
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
                 "   sam31\n" // switch to 31 bit
                 "   diag    %0,%1,0x64\n"
                 "   sam64\n" // switch back to 64 bit
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index fb2607c369ed..81ade401b073 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -31,17 +31,17 @@
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 #define __FAIL_ADDR_MASK 0x7ffff000
 #define __FIXUP_MASK 0x7fffffff
 #define __SUBCODE_MASK 0x0200
 #define __PF_RES_FIELD 0ULL
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
 #define __FAIL_ADDR_MASK -4096L
 #define __FIXUP_MASK ~0L
 #define __SUBCODE_MASK 0x0600
 #define __PF_RES_FIELD 0x8000000000000000ULL
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 
 #ifdef CONFIG_SYSCTL
 extern int sysctl_userprocess_debug;
@@ -393,11 +393,11 @@ int pfault_init(void)
                 "2:\n"
                 ".section __ex_table,\"a\"\n"
                 "   .align 4\n"
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
                 "   .long  0b,1b\n"
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
                 "   .quad  0b,1b\n"
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
                 ".previous"
                 : "=d" (rc) : "a" (&refbk), "m" (refbk) : "cc" );
         __ctl_set_bit(0, 9);
@@ -417,11 +417,11 @@ void pfault_fini(void)
                 "0:\n"
                 ".section __ex_table,\"a\"\n"
                 "   .align 4\n"
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
                 "   .long  0b,0b\n"
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
                 "   .quad  0b,0b\n"
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
                 ".previous"
                 : : "a" (&refbk), "m" (refbk) : "cc" );
 }
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 6ec5cd981e74..df953383724d 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -44,7 +44,7 @@ void diag10(unsigned long addr)
 {
         if (addr >= 0x7ff00000)
                 return;
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
         asm volatile (
                 "   sam31\n"
                 "   diag %0,%0,0x10\n"
@@ -106,7 +106,7 @@ extern unsigned long __initdata zholes_size[];
  * paging_init() sets up the page tables
  */
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 void __init paging_init(void)
 {
         pgd_t * pg_dir;
@@ -175,7 +175,7 @@ void __init paging_init(void)
         return;
 }
 
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
 void __init paging_init(void)
 {
         pgd_t * pg_dir;
@@ -256,7 +256,7 @@ void __init paging_init(void)
 
         return;
 }
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 
 void __init mem_init(void)
 {
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index fb187e5a54b4..356257c171de 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -50,7 +50,7 @@ static inline unsigned long mmap_base(void)
 
 static inline int mmap_is_legacy(void)
 {
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
         /*
          * Force standard allocation for 64 bit programs.
          */