diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 1846fbfd6bf2aab3de2b535c007c9166c9746e05..6fe532d82417d8acf89bc3a97217999cd5b09344 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 73a09a6ee6c8227f96192a3ef821575d3514c471..6c6b197898d0b61c0529636c318f24a57b41756e 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 dee6ab54984d03d6358a54476191aa18fb2ee05d..d06a8d71c71d59a38b1326db7d635bd37dd3b2dc 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 d6712cfa6def498815a726710efad00ccaedaaee..d1c259a7fe33a8763901db0f68d460bf3e61dbff 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 f195c7ea1d7b174be0abe0f3e3e875d577b910fe..7d23edc6facbc8f9b464be573b21873b48fd22a3 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 7434c32bc6312720a47af11f822a0348f4ad3e4e..4865e4b494647a3474f6820deb4eef054790f5a6 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 d47fecb42cc5f24d5e2aeda18424fb60f37ffb25..4ef44e536b2c6495a7ff5e05c4f7e5d444d40042 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 4eb71ffcf484d16e985b73c821e836e040fb5e1d..369ab4413ec71fe0123d16a2a2d187c2eb6603a9 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 d31a97c89f684813a5e02777ee6d1c05d7b21633..ea88d066bf04138a19bfa31fb7351b8737b2e81d 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 607d506689c8155cb9762a2824f6be1861460184..c271cdab58e2051728c154882ee94881a3dd53fb 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 78b64fe5e7c236ddaf53aba506bd44ea8c59f579..a942bf2d58e91b12836a4b59094f0ada9b127c15 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 @@ asmlinkage long sys_execve(struct pt_regs regs)
  */
 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 06afa3103ace75143d44258c215cc9c3d1a7fb00..8ecda6d66de4c0b2e9a1a7b3b32c4dbc49dea891 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 83cb42bc0b76a9da71c0677a6f37d517b6224550..1f33951ba439049f6fe45f3ea87c0ae22641c370 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 31e7b19348b75947e1d97c780c912b1bea0427a6..b03847d100d90fde48437391ead7692bd4c0c10f 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 13592d00a10fddcf92a396ba7aacecb068c0314a..6ae4a77270b539023fd94dd00ead6d9decbb3778 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 bd5b311006be6e67595bcc1b4ebf6671b57c9760..e10f4ca00499ede1690e0a650ee935a5b7f27c12 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 efe6b83b53f76fb35881c8e82f3d3f9dbe0e7a2d..6a63553493c57922bdab3196afdb1d3da265161b 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 @@ asmlinkage long old_mmap(struct mmap_arg_struct __user *arg)
 	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 c5bd36fae56b29294db4953a5375441a5e047720..95d1099686198e8deb030b027722e832a990c1e3 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 89fdb3808bc0f2893b04a0d017105974965886a1..9289face30278e7270600a6188c522d293bd0dfa 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 b701efa1f00ef1e04e0134f8daae7958de2deaa1..d9b97b3c597f2eb90e694ba385f3f61814c54c35 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 2dc14e9c83276818f95afa4d054e1f836fec4774..68d79c50208172cfdaea271ab61f335099749b5f 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 506a33b51e4f789317a3a854fb7eef9221aa7827..a9566bcab682b4bcb2bd83b565ae4aecbd07b830 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 fb2607c369edf323fe7ace88dd6817263a0b28fc..81ade401b073bfe62627c9a946de3ac3b04e0483 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 6ec5cd981e74f7d3f84e8d371a6e2e64261dd4de..df953383724d9d0686997e7e931f3c98ad40becb 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 fb187e5a54b4e12d8565a88b0b4ad3e9cd8ea132..356257c171de77ef60aba46f0af097b39fc97591 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.
 	 */
diff --git a/block/Kconfig b/block/Kconfig
index eb48edb80c1d19ad53ecd9379c3b3739272ba94a..377f6dd20e1799afe57f9881e3cd8ac222697f8e 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -5,7 +5,7 @@
 #for instance.
 config LBD
 	bool "Support for Large Block Devices"
-	depends on X86 || (MIPS && 32BIT) || PPC32 || ARCH_S390_31 || SUPERH || UML
+	depends on X86 || (MIPS && 32BIT) || PPC32 || (S390 && !64BIT) || SUPERH || UML
 	help
 	  Say Y here if you want to attach large (bigger than 2TB) discs to
 	  your machine, or if you want to have a raid or loopback device
diff --git a/crypto/Kconfig b/crypto/Kconfig
index c696f7ab729edf96cc691082eaaafb283c3365b2..52e1d4108a99bef096d877d5ba5bd1512545a32d 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -42,7 +42,7 @@ config CRYPTO_SHA1
 
 config CRYPTO_SHA1_S390
 	tristate "SHA1 digest algorithm (s390)"
-	depends on CRYPTO && ARCH_S390
+	depends on CRYPTO && S390
 	help
 	  This is the s390 hardware accelerated implementation of the
 	  SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
@@ -58,7 +58,7 @@ config CRYPTO_SHA256
 
 config CRYPTO_SHA256_S390
 	tristate "SHA256 digest algorithm (s390)"
-	depends on CRYPTO && ARCH_S390
+	depends on CRYPTO && S390
 	help
 	  This is the s390 hardware accelerated implementation of the
 	  SHA256 secure hash standard (DFIPS 180-2).
@@ -111,7 +111,7 @@ config CRYPTO_DES
 
 config CRYPTO_DES_S390
 	tristate "DES and Triple DES cipher algorithms (s390)"
-	depends on CRYPTO && ARCH_S390
+	depends on CRYPTO && S390
 	help
 	  DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
 
@@ -217,7 +217,7 @@ config CRYPTO_AES_X86_64
 
 config CRYPTO_AES_S390
 	tristate "AES cipher algorithms (s390)"
-	depends on CRYPTO && ARCH_S390
+	depends on CRYPTO && S390
 	help
 	  This is the s390 hardware accelerated implementation of the
 	  AES cipher algorithms (FIPS-197). AES uses the Rijndael
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 84e68cdd451b4e2f9fe8c5705d88185d1b55499f..5ebd06b1b4ca9463e789346ec939d6b7041aec2a 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -985,7 +985,7 @@ config HPET_MMAP
 
 config HANGCHECK_TIMER
 	tristate "Hangcheck timer"
-	depends on X86 || IA64 || PPC64 || ARCH_S390
+	depends on X86 || IA64 || PPC64 || S390
 	help
 	  The hangcheck-timer module detects when the system has gone
 	  out to lunch past a certain margin.  It can reboot the system
diff --git a/drivers/char/hangcheck-timer.c b/drivers/char/hangcheck-timer.c
index 66e53dd450ff251ecb1642dbb0817af2c1131f5d..40a67c86420ccc4540c54b5c18b050e2e3338b3c 100644
--- a/drivers/char/hangcheck-timer.c
+++ b/drivers/char/hangcheck-timer.c
@@ -120,7 +120,7 @@ __setup("hcheck_dump_tasks", hangcheck_parse_dump_tasks);
 #if defined(CONFIG_X86)
 # define HAVE_MONOTONIC
 # define TIMER_FREQ 1000000000ULL
-#elif defined(CONFIG_ARCH_S390)
+#elif defined(CONFIG_S390)
 /* FA240000 is 1 Second in the IBM time universe (Page 4-38 Principles of Op for zSeries */
 # define TIMER_FREQ 0xFA240000ULL
 #elif defined(CONFIG_IA64)
diff --git a/drivers/char/watchdog/Kconfig b/drivers/char/watchdog/Kconfig
index 344001b45af94b3caa8ac0cf83979e224bb61e96..a6544790af60bc358bce4e6a9c80704de8ec03de 100644
--- a/drivers/char/watchdog/Kconfig
+++ b/drivers/char/watchdog/Kconfig
@@ -438,7 +438,7 @@ config INDYDOG
 
 config ZVM_WATCHDOG
 	tristate "z/VM Watchdog Timer"
-	depends on WATCHDOG && ARCH_S390
+	depends on WATCHDOG && S390
 	help
 	  IBM s/390 and zSeries machines running under z/VM 5.1 or later
 	  provide a virtual watchdog timer to their guest that cause a
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 9f2352bd8348efa34047125a4f72c181dd5d9f93..a1e660e3531d381dc5fbb930d65bbb4b94ade3a1 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -157,7 +157,7 @@ struct input_event_compat {
 #  define COMPAT_TEST test_thread_flag(TIF_IA32)
 #elif defined(CONFIG_IA64)
 #  define COMPAT_TEST IS_IA32_PROCESS(ia64_task_regs(current))
-#elif defined(CONFIG_ARCH_S390)
+#elif defined(CONFIG_S390)
 #  define COMPAT_TEST test_thread_flag(TIF_31BIT)
 #elif defined(CONFIG_MIPS)
 #  define COMPAT_TEST (current->thread.mflags & MF_32BIT_ADDR)
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index c782a6329805713493f930681176d3e8a32d8c47..fa39b944bc46a7df2eb947efea31298b4236977e 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -6,7 +6,7 @@ menu "PHY device support"
 
 config PHYLIB
 	tristate "PHY Device support and infrastructure"
-	depends on NET_ETHERNET && (BROKEN || !ARCH_S390)
+	depends on NET_ETHERNET && (BROKEN || !S390)
 	help
 	  Ethernet controllers are usually attached to PHY
 	  devices.  This option provides infrastructure for
diff --git a/drivers/s390/block/Kconfig b/drivers/s390/block/Kconfig
index 6e7d7b06421d233f1521568656bd193a6b9f7bee..6f50cc9323d9590093ae70fb986f519aceafb642 100644
--- a/drivers/s390/block/Kconfig
+++ b/drivers/s390/block/Kconfig
@@ -1,11 +1,11 @@
-if ARCH_S390
+if S390
 
 comment "S/390 block device drivers"
-	depends on ARCH_S390
+	depends on S390
 
 config BLK_DEV_XPRAM
 	tristate "XPRAM disk support"
-	depends on ARCH_S390
+	depends on S390
 	help
 	  Select this option if you want to use your expanded storage on S/390
 	  or zSeries as a disk.  This is useful as a _fast_ swap device if you
@@ -49,7 +49,7 @@ config DASD_FBA
 
 config DASD_DIAG
 	tristate "Support for DIAG access to Disks"
-	depends on DASD && ( ARCH_S390X = 'n' || EXPERIMENTAL)
+	depends on DASD && ( 64BIT = 'n' || EXPERIMENTAL)
 	help
 	  Select this option if you want to use Diagnose250 command to access
 	  Disks under VM.  If you are not running under VM or unsure what it is,
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 1141a5963b67d0eb7e64242390256f73ebe92da4..041e1a621885803b1d6bba97f0194c5703a92841 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -604,7 +604,7 @@ dasd_smalloc_request(char *magic, int cplength, int datasize,
 void
 dasd_kfree_request(struct dasd_ccw_req * cqr, struct dasd_device * device)
 {
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 	struct ccw1 *ccw;
 
 	/* Clear any idals used for the request. */
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index a33d4064b537508729665b34f174aac2e69edb3d..ba80fdea7ebf09f43e925ca3ce38e854a82d4622 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -75,7 +75,7 @@ dia250(void *iob, int cmd)
 	int rc;
 
 	__asm__ __volatile__(
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 		"	lghi	%0,3\n"
 		"	lgr	0,%3\n"
 		"	diag	0,%2,0x250\n"
diff --git a/drivers/s390/block/dasd_diag.h b/drivers/s390/block/dasd_diag.h
index 37edf6e917151d298a911a249fb4ee5dca90a7f7..a4f80bd735f1e94730fabd434c7615b7c7972186 100644
--- a/drivers/s390/block/dasd_diag.h
+++ b/drivers/s390/block/dasd_diag.h
@@ -45,7 +45,7 @@ struct dasd_diag_characteristics {
 } __attribute__ ((packed, aligned(4)));
 
 
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 #define DASD_DIAG_FLAGA_DEFAULT		DASD_DIAG_FLAGA_FORMAT_64BIT
 
 typedef u64 blocknum_t;
@@ -86,7 +86,7 @@ struct dasd_diag_rw_io {
 	struct dasd_diag_bio *bio_list;
 	u8  spare4[8];
 } __attribute__ ((packed, aligned(8)));
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
 #define DASD_DIAG_FLAGA_DEFAULT		0x0
 
 typedef u32 blocknum_t;
@@ -125,4 +125,4 @@ struct dasd_diag_rw_io {
 	u32 interrupt_params;
 	u8 spare3[20];
 } __attribute__ ((packed, aligned(8)));
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index efc4cf62496e1c61c9bf779bdc878ce75f6135af..96eb48258580f5a0b2b3d5a90cbd7e43a0c203ee 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -1041,7 +1041,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req)
 				/* Eckd can only do full blocks. */
 				return ERR_PTR(-EINVAL);
 			count += bv->bv_len >> (device->s2b_shift + 9);
-#if defined(CONFIG_ARCH_S390X)
+#if defined(CONFIG_64BIT)
 			if (idal_is_needed (page_address(bv->bv_page),
 					    bv->bv_len))
 				cidaw += bv->bv_len >> (device->s2b_shift + 9);
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 9bac8d87a9cc7747cbda118d68a118830b0ba94b..8ec75dc08e2cc3ea16f4fa17335a051fa84297e8 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -271,7 +271,7 @@ dasd_fba_build_cp(struct dasd_device * device, struct request *req)
 				/* Fba can only do full blocks. */
 				return ERR_PTR(-EINVAL);
 			count += bv->bv_len >> (device->s2b_shift + 9);
-#if defined(CONFIG_ARCH_S390X)
+#if defined(CONFIG_64BIT)
 			if (idal_is_needed (page_address(bv->bv_page),
 					    bv->bv_len))
 				cidaw += bv->bv_len / blksize;
diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c
index d428c909b8a050bd542f010f9f2ba521e0120ce0..bf3a67c3cc5e6b0cb44599602fd23aa64bf22d2f 100644
--- a/drivers/s390/block/xpram.c
+++ b/drivers/s390/block/xpram.c
@@ -160,7 +160,7 @@ static int xpram_page_in (unsigned long page_addr, unsigned int xpage_index)
                 "0: ipm   %0\n"
 		"   srl   %0,28\n"
 		"1:\n"
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 		".section __ex_table,\"a\"\n"
 		"   .align 4\n"
 		"   .long  0b,1b\n"
@@ -208,7 +208,7 @@ static long xpram_page_out (unsigned long page_addr, unsigned int xpage_index)
                 "0: ipm   %0\n"
 		"   srl   %0,28\n"
 		"1:\n"
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 		".section __ex_table,\"a\"\n"
 		"   .align 4\n"
 		"   .long  0b,1b\n"
diff --git a/drivers/s390/char/vmwatchdog.c b/drivers/s390/char/vmwatchdog.c
index 5473c23fcb521d76f7cc941b71cdf2a57efe1bb5..5acc0ace3d7d571f5a0a14ad994a7a7f191f2dad 100644
--- a/drivers/s390/char/vmwatchdog.c
+++ b/drivers/s390/char/vmwatchdog.c
@@ -66,7 +66,7 @@ static int __diag288(enum vmwdt_func func, unsigned int timeout,
 	__cmdl = len;
 	err = 0;
 	asm volatile (
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
 		       "diag %2,%4,0x288\n"
 		"1:	\n"
 		".section .fixup,\"ax\"\n"
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 6f274f4f92ebea21cc6003796f12bfdcb6606bfd..7376bc87206da4b46af909c5af41edc468e3c7f7 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -195,7 +195,7 @@ cio_start_key (struct subchannel *sch,	/* subchannel structure */
 	sch->orb.spnd = sch->options.suspend;
 	sch->orb.ssic = sch->options.suspend && sch->options.inter;
 	sch->orb.lpm = (lpm != 0) ? (lpm & sch->opm) : sch->lpm;
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 	/*
 	 * for 64 bit we always support 64 bit IDAWs with 4k page size only
 	 */
diff --git a/drivers/s390/cio/device_id.c b/drivers/s390/cio/device_id.c
index 3c77c3fd461d894f71be49710f0754d263014957..04ceba343db8ef66209c54d0467d4473a27e4d8e 100644
--- a/drivers/s390/cio/device_id.c
+++ b/drivers/s390/cio/device_id.c
@@ -27,7 +27,7 @@
 /*
  * diag210 is used under VM to get information about a virtual device
  */
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 int
 diag210(struct diag210 * addr)
 {
diff --git a/drivers/s390/cio/ioasm.h b/drivers/s390/cio/ioasm.h
index 62b0e2ad507f4eb20e5b8138f5e9acf3cfd1b398..95a9462f9a911ccc74faea8b9a39235f4b6cebc3 100644
--- a/drivers/s390/cio/ioasm.h
+++ b/drivers/s390/cio/ioasm.h
@@ -50,7 +50,7 @@ static inline int stsch_err(struct subchannel_id schid,
 		"0:  ipm  %0\n"
 		"    srl  %0,28\n"
 		"1:\n"
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 		".section __ex_table,\"a\"\n"
 		"   .align 8\n"
 		"   .quad 0b,1b\n"
@@ -95,7 +95,7 @@ static inline int msch_err(struct subchannel_id schid,
 		"0:  ipm  %0\n"
 		"    srl  %0,28\n"
 		"1:\n"
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 		".section __ex_table,\"a\"\n"
 		"   .align 8\n"
 		"   .quad 0b,1b\n"
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index 035c77af9cd3facaca669f93118a9128c5df4bff..30a836ffc31fc51fe4b95513c093bee1ec5f78ee 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -2394,7 +2394,7 @@ tiqdio_check_chsc_availability(void)
 	sprintf(dbf_text,"hydrati%1x", hydra_thinints);
 	QDIO_DBF_TEXT0(0,setup,dbf_text);
 
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 	/* Check for QEBSM support in general (bit 58). */
 	is_passthrough = css_general_characteristics.qebsm;
 #endif
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 43b840af5300ad534b90606acb8b384fccd9d126..fa385e761fe177034551ab5a82038d8ff38f3693 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -271,7 +271,7 @@ static inline int
 do_sqbs(unsigned long sch, unsigned char state, int queue,
        unsigned int *start, unsigned int *count)
 {
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
        register unsigned long _ccq asm ("0") = *count;
        register unsigned long _sch asm ("1") = sch;
        unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
@@ -295,7 +295,7 @@ static inline int
 do_eqbs(unsigned long sch, unsigned char *state, int queue,
 	unsigned int *start, unsigned int *count)
 {
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 	register unsigned long _ccq asm ("0") = *count;
 	register unsigned long _sch asm ("1") = sch;
 	unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
@@ -323,7 +323,7 @@ do_siga_sync(struct subchannel_id schid, unsigned int mask1, unsigned int mask2)
 {
 	int cc;
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 	asm volatile (
 		"lhi	0,2	\n\t"
 		"lr	1,%1	\n\t"
@@ -336,7 +336,7 @@ do_siga_sync(struct subchannel_id schid, unsigned int mask1, unsigned int mask2)
 		: "d" (schid), "d" (mask1), "d" (mask2)
 		: "cc", "0", "1", "2", "3"
 		);
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
 	asm volatile (
 		"lghi	0,2	\n\t"
 		"llgfr	1,%1	\n\t"
@@ -349,7 +349,7 @@ do_siga_sync(struct subchannel_id schid, unsigned int mask1, unsigned int mask2)
 		: "d" (schid), "d" (mask1), "d" (mask2)
 		: "cc", "0", "1", "2", "3"
 		);
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 	return cc;
 }
 
@@ -358,7 +358,7 @@ do_siga_input(struct subchannel_id schid, unsigned int mask)
 {
 	int cc;
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 	asm volatile (
 		"lhi	0,1	\n\t"
 		"lr	1,%1	\n\t"
@@ -370,7 +370,7 @@ do_siga_input(struct subchannel_id schid, unsigned int mask)
 		: "d" (schid), "d" (mask)
 		: "cc", "0", "1", "2", "memory"
 		);
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
 	asm volatile (
 		"lghi	0,1	\n\t"
 		"llgfr	1,%1	\n\t"
@@ -382,7 +382,7 @@ do_siga_input(struct subchannel_id schid, unsigned int mask)
 		: "d" (schid), "d" (mask)
 		: "cc", "0", "1", "2", "memory"
 		);
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 	
 	return cc;
 }
@@ -394,7 +394,7 @@ do_siga_output(unsigned long schid, unsigned long mask, __u32 *bb,
 	int cc;
 	__u32 busy_bit;
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 	asm volatile (
 		"lhi	0,0	\n\t"
 		"lr	1,%2	\n\t"
@@ -424,7 +424,7 @@ do_siga_output(unsigned long schid, unsigned long mask, __u32 *bb,
 		"i" (QDIO_SIGA_ERROR_ACCESS_EXCEPTION)
 		: "cc", "0", "1", "2", "memory"
 		);
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
 	asm volatile (
         	"llgfr  0,%5    \n\t"
                 "lgr    1,%2    \n\t"
@@ -449,7 +449,7 @@ do_siga_output(unsigned long schid, unsigned long mask, __u32 *bb,
 		"i" (QDIO_SIGA_ERROR_ACCESS_EXCEPTION), "d" (fc)
 		: "cc", "0", "1", "2", "memory"
 		);
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 	
 	(*bb) = busy_bit;
 	return cc;
@@ -461,21 +461,21 @@ do_clear_global_summary(void)
 
 	unsigned long time;
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 	asm volatile (
 		"lhi	1,3	\n\t"
 		".insn	rre,0xb2650000,2,0	\n\t"
 		"lr	%0,3	\n\t"
 		: "=d" (time) : : "cc", "1", "2", "3"
 		);
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
 	asm volatile (
 		"lghi	1,3	\n\t"
 		".insn	rre,0xb2650000,2,0	\n\t"
 		"lgr	%0,3	\n\t"
 		: "=d" (time) : : "cc", "1", "2", "3"
 		);
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 	
 	return time;
 }
@@ -542,11 +542,11 @@ struct qdio_perf_stats {
 
 #define MY_MODULE_STRING(x) #x
 
-#ifdef CONFIG_ARCH_S390X
+#ifdef CONFIG_64BIT
 #define QDIO_GET_ADDR(x) ((__u32)(unsigned long)x)
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
 #define QDIO_GET_ADDR(x) ((__u32)(long)x)
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
 
 struct qdio_q {
 	volatile struct slsb slsb;
diff --git a/drivers/s390/crypto/z90hardware.c b/drivers/s390/crypto/z90hardware.c
index 7c3ed52e03e17c3c276e706d3d6bb8bb6b476060..d7f7494a0cbef4db65233b1fbf8030b054cbb593 100644
--- a/drivers/s390/crypto/z90hardware.c
+++ b/drivers/s390/crypto/z90hardware.c
@@ -785,7 +785,7 @@ testq(int q_nr, int *q_depth, int *dev_type, struct ap_status_word *stat)
 	int ccode;
 
 	asm volatile
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
 	("	llgfr	0,%4		\n"
 	 "	slgr	1,1		\n"
 	 "	lgr	2,1		\n"
@@ -855,7 +855,7 @@ resetq(int q_nr, struct ap_status_word *stat_p)
 	int ccode;
 
 	asm volatile
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
 	("	llgfr	0,%2		\n"
 	 "	lghi	1,1		\n"
 	 "	sll	1,24		\n"
@@ -921,7 +921,7 @@ sen(int msg_len, unsigned char *msg_ext, struct ap_status_word *stat)
 	int ccode;
 
 	asm volatile
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
 	("	lgr	6,%3		\n"
 	 "	llgfr	7,%2		\n"
 	 "	llgt	0,0(6)		\n"
@@ -1000,7 +1000,7 @@ rec(int q_nr, int buff_l, unsigned char *rsp, unsigned char *id,
 	int ccode;
 
 	asm volatile
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
 	("	llgfr	0,%2		\n"
 	 "	lgr	3,%4		\n"
 	 "	lgr	6,%3		\n"
diff --git a/drivers/s390/net/Kconfig b/drivers/s390/net/Kconfig
index a7efc394515e1da01d34cd75af84722be415cad8..5488547549212c3864baeaaaef6704a5757f9e0f 100644
--- a/drivers/s390/net/Kconfig
+++ b/drivers/s390/net/Kconfig
@@ -1,5 +1,5 @@
 menu "S/390 network device drivers"
-	depends on NETDEVICES && ARCH_S390
+	depends on NETDEVICES && S390
 
 config LCS
 	tristate "Lan Channel Station Interface"
diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
index 6b63d21612ec71fd30e272f8272a352b37e18542..e70af7f39946b6fef7748d760761b74b50658cc5 100644
--- a/drivers/s390/net/claw.c
+++ b/drivers/s390/net/claw.c
@@ -1603,7 +1603,7 @@ dumpit(char* buf, int len)
         __u32      ct, sw, rm, dup;
         char       *ptr, *rptr;
         char       tbuf[82], tdup[82];
-#if (CONFIG_ARCH_S390X)
+#if (CONFIG_64BIT)
         char       addr[22];
 #else
         char       addr[12];
@@ -1619,7 +1619,7 @@ dumpit(char* buf, int len)
         dup = 0;
         for ( ct=0; ct < len; ct++, ptr++, rptr++ )  {
                 if (sw == 0) {
-#if (CONFIG_ARCH_S390X)
+#if (CONFIG_64BIT)
                         sprintf(addr, "%16.16lX",(unsigned long)rptr);
 #else
                         sprintf(addr, "%8.8X",(__u32)rptr);
@@ -1634,7 +1634,7 @@ dumpit(char* buf, int len)
                 if (sw == 8) {
                         strcat(bhex, "  ");
                 }
-#if (CONFIG_ARCH_S390X)
+#if (CONFIG_64BIT)
                 sprintf(tbuf,"%2.2lX", (unsigned long)*ptr);
 #else
                 sprintf(tbuf,"%2.2X", (__u32)*ptr);
diff --git a/drivers/s390/s390mach.c b/drivers/s390/s390mach.c
index 7dad597ff86ebd38b061b6a59d2af879666d2829..3bf466603512a32f2c6a933525492eed58963f33 100644
--- a/drivers/s390/s390mach.c
+++ b/drivers/s390/s390mach.c
@@ -246,7 +246,7 @@ s390_revalidate_registers(struct mci *mci)
 		 */
 		kill_task = 1;
 
-#ifndef __s390x__
+#ifndef CONFIG_64BIT
 	asm volatile("ld 0,0(%0)\n"
 		     "ld 2,8(%0)\n"
 		     "ld 4,16(%0)\n"
@@ -255,7 +255,7 @@ s390_revalidate_registers(struct mci *mci)
 #endif
 
 	if (MACHINE_HAS_IEEE) {
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
 		fpt_save_area = &S390_lowcore.floating_pt_save_area;
 		fpt_creg_save_area = &S390_lowcore.fpt_creg_save_area;
 #else
@@ -314,7 +314,7 @@ s390_revalidate_registers(struct mci *mci)
 		 */
 		s390_handle_damage("invalid control registers.");
 	else
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
 		asm volatile("lctlg 0,15,0(%0)"
 			     : : "a" (&S390_lowcore.cregs_save_area));
 #else
@@ -327,7 +327,7 @@ s390_revalidate_registers(struct mci *mci)
 	 * can't write something sensible into that register.
 	 */
 
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
 	/*
 	 * See if we can revalidate the TOD programmable register with its
 	 * old contents (should be zero) otherwise set it to zero.
@@ -384,7 +384,7 @@ s390_do_machine_check(struct pt_regs *regs)
 		if (mci->b) {
 			/* Processing backup -> verify if we can survive this */
 			u64 z_mcic, o_mcic, t_mcic;
-#ifdef __s390x__
+#ifdef CONFIG_64BIT
 			z_mcic = (1ULL<<63 | 1ULL<<59 | 1ULL<<29);
 			o_mcic = (1ULL<<43 | 1ULL<<42 | 1ULL<<41 | 1ULL<<40 |
 				  1ULL<<36 | 1ULL<<35 | 1ULL<<34 | 1ULL<<32 |
diff --git a/drivers/s390/sysinfo.c b/drivers/s390/sysinfo.c
index 87c2db1bd4f5793e9412805ce4e31ed146272878..66da840c931672f4d70eef5e92b608b95d51fc75 100644
--- a/drivers/s390/sysinfo.c
+++ b/drivers/s390/sysinfo.c
@@ -106,7 +106,7 @@ static inline int stsi (void *sysinfo,
 {
 	int cc, retv;
 
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
 	__asm__ __volatile__ (	"lr\t0,%2\n"
 				"\tlr\t1,%3\n"
 				"\tstsi\t0(%4)\n"
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 4c42065dea88bbc2623264ada6ff5d0329406c61..9e8254f0256c1ffdb651be19ae49f72a0ad91190 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -1815,7 +1815,7 @@ config SCSI_SUNESP
 
 config ZFCP
 	tristate "FCP host bus adapter driver for IBM eServer zSeries"
-	depends on ARCH_S390 && QDIO && SCSI
+	depends on S390 && QDIO && SCSI
 	select SCSI_FC_ATTRS
 	help
           If you want to access SCSI devices attached to your IBM eServer
diff --git a/fs/partitions/Kconfig b/fs/partitions/Kconfig
index 656bc43431b9cb362829a150bf7532bbebd087bd..e227a04261abed002ef1aa88ae8e3884a1836640 100644
--- a/fs/partitions/Kconfig
+++ b/fs/partitions/Kconfig
@@ -85,7 +85,7 @@ config ATARI_PARTITION
 
 config IBM_PARTITION
 	bool "IBM disk label and partition support"
-	depends on PARTITION_ADVANCED && ARCH_S390
+	depends on PARTITION_ADVANCED && S390
 	help
 	  Say Y here if you would like to be able to read the hard disk
 	  partition table format used by IBM DASD disks operating under CMS.
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 3e1239e4b303002b11b709a9d1e6016ebf7d47e9..5e9251f6531705671ba017d0c4c5a208e76d6aaa 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -308,7 +308,7 @@ int proc_pid_status(struct task_struct *task, char * buffer)
 	buffer = task_sig(task, buffer);
 	buffer = task_cap(task, buffer);
 	buffer = cpuset_task_status_allowed(task, buffer);
-#if defined(CONFIG_ARCH_S390)
+#if defined(CONFIG_S390)
 	buffer = task_show_regs(task, buffer);
 #endif
 	return buffer - orig;
diff --git a/include/asm-s390/unistd.h b/include/asm-s390/unistd.h
index f97d92691f179fc29c2645eda6c742dd108a50ee..2861cdc243ad5fd2d025c3524fd50d7dcb259a5e 100644
--- a/include/asm-s390/unistd.h
+++ b/include/asm-s390/unistd.h
@@ -539,7 +539,7 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4,    \
 #define __ARCH_WANT_SYS_SIGPENDING
 #define __ARCH_WANT_SYS_SIGPROCMASK
 #define __ARCH_WANT_SYS_RT_SIGACTION
-# ifdef CONFIG_ARCH_S390_31
+# ifndef CONFIG_64BIT
 #   define __ARCH_WANT_STAT64
 #   define __ARCH_WANT_SYS_TIME
 # endif
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 60f8bc78a35a9c8a1ec9625cebe57853cc129200..6c5d4c898ccb2bb5f54ec9f07a704eda70cb68f2 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -12,7 +12,7 @@
 #include <linux/config.h>
 #include <linux/smp.h>
 
-#if !defined(CONFIG_ARCH_S390)
+#if !defined(CONFIG_S390)
 
 #include <linux/linkage.h>
 #include <linux/cache.h>
diff --git a/init/Kconfig b/init/Kconfig
index 24e0f7c756c0894749ca493d6d5f7e2726f3456d..ba42f3793a84332dcbe6cdb5e4594d193997f59c 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -189,7 +189,7 @@ config AUDIT
 
 config AUDITSYSCALL
 	bool "Enable system-call auditing support"
-	depends on AUDIT && (X86 || PPC || PPC64 || ARCH_S390 || IA64 || UML || SPARC64)
+	depends on AUDIT && (X86 || PPC || PPC64 || S390 || IA64 || UML || SPARC64)
 	default y if SECURITY_SELINUX
 	help
 	  Enable low-overhead system-call auditing infrastructure that
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index c10b08a809823d9d906f1fc6f29c198c135e33ce..c2683fcd792deb75a5f79d3e0ec02424fecd1a7c 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -145,7 +145,7 @@ int __init rd_load_image(char *from)
 	int nblocks, i, disk;
 	char *buf = NULL;
 	unsigned short rotate = 0;
-#if !defined(CONFIG_ARCH_S390) && !defined(CONFIG_PPC_ISERIES)
+#if !defined(CONFIG_S390) && !defined(CONFIG_PPC_ISERIES)
 	char rotator[4] = { '|' , '/' , '-' , '\\' };
 #endif
 
@@ -237,7 +237,7 @@ int __init rd_load_image(char *from)
 		}
 		sys_read(in_fd, buf, BLOCK_SIZE);
 		sys_write(out_fd, buf, BLOCK_SIZE);
-#if !defined(CONFIG_ARCH_S390) && !defined(CONFIG_PPC_ISERIES)
+#if !defined(CONFIG_S390) && !defined(CONFIG_PPC_ISERIES)
 		if (!(i % 16)) {
 			printk("%c\b", rotator[rotate & 0x3]);
 			rotate++;
diff --git a/kernel/panic.c b/kernel/panic.c
index aabc5f86fa3f4422a2b2cea9b3d67723cd99e317..c5c4ab255834e5760715e3f7ce4871a2a943245e 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -60,7 +60,7 @@ NORET_TYPE void panic(const char * fmt, ...)
 	long i;
 	static char buf[1024];
 	va_list args;
-#if defined(CONFIG_ARCH_S390)
+#if defined(CONFIG_S390)
         unsigned long caller = (unsigned long) __builtin_return_address(0);
 #endif
 
@@ -125,7 +125,7 @@ NORET_TYPE void panic(const char * fmt, ...)
 		printk(KERN_EMERG "Press Stop-A (L1-A) to return to the boot prom\n");
 	}
 #endif
-#if defined(CONFIG_ARCH_S390)
+#if defined(CONFIG_S390)
         disabled_wait(caller);
 #endif
 	local_irq_enable();
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 345f4a1d533fbe35313ffe7f066bb07375f20261..a85047bb5739f97763345bc9ef047e0fe043f33c 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -108,7 +108,7 @@ extern int pwrsw_enabled;
 extern int unaligned_enabled;
 #endif
 
-#ifdef CONFIG_ARCH_S390
+#ifdef CONFIG_S390
 #ifdef CONFIG_MATHEMU
 extern int sysctl_ieee_emulation_warnings;
 #endif
@@ -542,7 +542,7 @@ static ctl_table kern_table[] = {
 		.extra1		= &minolduid,
 		.extra2		= &maxolduid,
 	},
-#ifdef CONFIG_ARCH_S390
+#ifdef CONFIG_S390
 #ifdef CONFIG_MATHEMU
 	{
 		.ctl_name	= KERN_IEEE_EMULATION_WARNINGS,
@@ -644,7 +644,7 @@ static ctl_table kern_table[] = {
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec,
 	},
-#if defined(CONFIG_ARCH_S390)
+#if defined(CONFIG_S390)
 	{
 		.ctl_name	= KERN_SPIN_RETRY,
 		.procname	= "spin_retry",
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 1cedc2356b781efccb5e6425f1431cc10ddd468a..80598cfd728c39744c5841e0e5d0bbd078833dba 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -32,7 +32,7 @@ config MAGIC_SYSRQ
 config LOG_BUF_SHIFT
 	int "Kernel log buffer size (16 => 64KB, 17 => 128KB)" if DEBUG_KERNEL
 	range 12 21
-	default 17 if ARCH_S390
+	default 17 if S390
 	default 16 if X86_NUMAQ || IA64
 	default 15 if SMP
 	default 14