s390: remove 31 bit support

Remove the 31 bit support in order to reduce maintenance cost and
effectively remove dead code. Since a couple of years there is no
distribution left that comes with a 31 bit kernel.

The 31 bit kernel also has been broken since more than a year before
anybody noticed. In addition I added a removal warning to the kernel
shown at ipl for 5 minutes: a960062e5826 ("s390: add 31 bit warning
message") which let everybody know about the plan to remove 31 bit
code. We didn't get any response.

Given that the last 31 bit only machine was introduced in 1999 let's
remove the code.
Anybody with 31 bit user space code can still use the compat mode.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

30 files changed, 14 insertions, 819 deletions

diff --git a/arch/s390/include/asm/appldata.h b/arch/s390/include/asm/appldata.h
index 32a705987156..16887c5fd989 100644
--- a/arch/s390/include/asm/appldata.h
+++ b/arch/s390/include/asm/appldata.h
@@ -9,28 +9,6 @@
 
 #include <asm/io.h>
 
-#ifndef CONFIG_64BIT
-
-#define APPLDATA_START_INTERVAL_REC	0x00	/* Function codes for */
-#define APPLDATA_STOP_REC		0x01	/* DIAG 0xDC	      */
-#define APPLDATA_GEN_EVENT_REC		0x02
-#define APPLDATA_START_CONFIG_REC	0x03
-
-/*
- * Parameter list for DIAGNOSE X'DC'
- */
-struct appldata_parameter_list {
-	u16 diag;		/* The DIAGNOSE code X'00DC'	      */
-	u8  function;		/* The function code for the DIAGNOSE */
-	u8  parlist_length;	/* Length of the parameter list       */
-	u32 product_id_addr;	/* Address of the 16-byte product ID  */
-	u16 reserved;
-	u16 buffer_length;	/* Length of the application data buffer  */
-	u32 buffer_addr;	/* Address of the application data buffer */
-} __attribute__ ((packed));
-
-#else /* CONFIG_64BIT */
-
 #define APPLDATA_START_INTERVAL_REC	0x80
 #define APPLDATA_STOP_REC		0x81
 #define APPLDATA_GEN_EVENT_REC		0x82
@@ -51,8 +29,6 @@ struct appldata_parameter_list {
 	u64 buffer_addr;
 } __attribute__ ((packed));
 
-#endif /* CONFIG_64BIT */
-
 struct appldata_product_id {
 	char prod_nr[7];	/* product number */
 	u16  prod_fn;		/* product function */
diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h
index fa934fe080c1..adbe3802e377 100644
--- a/arch/s390/include/asm/atomic.h
+++ b/arch/s390/include/asm/atomic.h
@@ -160,8 +160,6 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 
 #define ATOMIC64_INIT(i)  { (i) }
 
-#ifdef CONFIG_64BIT
-
 #define __ATOMIC64_NO_BARRIER	"\n"
 
 #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
@@ -274,99 +272,6 @@ static inline long long atomic64_cmpxchg(atomic64_t *v,
 
 #undef __ATOMIC64_LOOP
 
-#else /* CONFIG_64BIT */
-
-typedef struct {
-	long long counter;
-} atomic64_t;
-
-static inline long long atomic64_read(const atomic64_t *v)
-{
-	register_pair rp;
-
-	asm volatile(
-		"	lm	%0,%N0,%1"
-		: "=&d" (rp) : "Q" (v->counter)	);
-	return rp.pair;
-}
-
-static inline void atomic64_set(atomic64_t *v, long long i)
-{
-	register_pair rp = {.pair = i};
-
-	asm volatile(
-		"	stm	%1,%N1,%0"
-		: "=Q" (v->counter) : "d" (rp) );
-}
-
-static inline long long atomic64_xchg(atomic64_t *v, long long new)
-{
-	register_pair rp_new = {.pair = new};
-	register_pair rp_old;
-
-	asm volatile(
-		"	lm	%0,%N0,%1\n"
-		"0:	cds	%0,%2,%1\n"
-		"	jl	0b\n"
-		: "=&d" (rp_old), "+Q" (v->counter)
-		: "d" (rp_new)
-		: "cc");
-	return rp_old.pair;
-}
-
-static inline long long atomic64_cmpxchg(atomic64_t *v,
-					 long long old, long long new)
-{
-	register_pair rp_old = {.pair = old};
-	register_pair rp_new = {.pair = new};
-
-	asm volatile(
-		"	cds	%0,%2,%1"
-		: "+&d" (rp_old), "+Q" (v->counter)
-		: "d" (rp_new)
-		: "cc");
-	return rp_old.pair;
-}
-
-
-static inline long long atomic64_add_return(long long i, atomic64_t *v)
-{
-	long long old, new;
-
-	do {
-		old = atomic64_read(v);
-		new = old + i;
-	} while (atomic64_cmpxchg(v, old, new) != old);
-	return new;
-}
-
-static inline void atomic64_set_mask(unsigned long long mask, atomic64_t *v)
-{
-	long long old, new;
-
-	do {
-		old = atomic64_read(v);
-		new = old | mask;
-	} while (atomic64_cmpxchg(v, old, new) != old);
-}
-
-static inline void atomic64_clear_mask(unsigned long long mask, atomic64_t *v)
-{
-	long long old, new;
-
-	do {
-		old = atomic64_read(v);
-		new = old & mask;
-	} while (atomic64_cmpxchg(v, old, new) != old);
-}
-
-static inline void atomic64_add(long long i, atomic64_t *v)
-{
-	atomic64_add_return(i, v);
-}
-
-#endif /* CONFIG_64BIT */
-
 static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u)
 {
 	long long c, old;
diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
index 520542477678..9b68e98a724f 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -51,32 +51,6 @@
 
 #define __BITOPS_NO_BARRIER	"\n"
 
-#ifndef CONFIG_64BIT
-
-#define __BITOPS_OR		"or"
-#define __BITOPS_AND		"nr"
-#define __BITOPS_XOR		"xr"
-#define __BITOPS_BARRIER	"\n"
-
-#define __BITOPS_LOOP(__addr, __val, __op_string, __barrier)	\
-({								\
-	unsigned long __old, __new;				\
-								\
-	typecheck(unsigned long *, (__addr));			\
-	asm volatile(						\
-		"	l	%0,%2\n"			\
-		"0:	lr	%1,%0\n"			\
-		__op_string "	%1,%3\n"			\
-		"	cs	%0,%1,%2\n"			\
-		"	jl	0b"				\
-		: "=&d" (__old), "=&d" (__new), "+Q" (*(__addr))\
-		: "d" (__val)					\
-		: "cc", "memory");				\
-	__old;							\
-})
-
-#else /* CONFIG_64BIT */
-
 #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
 
 #define __BITOPS_OR		"laog"
@@ -125,8 +99,6 @@
 
 #endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */
 
-#endif /* CONFIG_64BIT */
-
 #define __BITOPS_WORDS(bits) (((bits) + BITS_PER_LONG - 1) / BITS_PER_LONG)
 
 static inline unsigned long *
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index b91e960e4045..221b454c734a 100644
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -22,15 +22,7 @@ typedef unsigned long long __nocast cputime64_t;
 
 static inline unsigned long __div(unsigned long long n, unsigned long base)
 {
-#ifndef CONFIG_64BIT
-	register_pair rp;
-
-	rp.pair = n >> 1;
-	asm ("dr %0,%1" : "+d" (rp) : "d" (base >> 1));
-	return rp.subreg.odd;
-#else /* CONFIG_64BIT */
 	return n / base;
-#endif /* CONFIG_64BIT */
 }
 
 #define cputime_one_jiffy		jiffies_to_cputime(1)
@@ -101,17 +93,8 @@ static inline void cputime_to_timespec(const cputime_t cputime,
 				       struct timespec *value)
 {
 	unsigned long long __cputime = (__force unsigned long long) cputime;
-#ifndef CONFIG_64BIT
-	register_pair rp;
-
-	rp.pair = __cputime >> 1;
-	asm ("dr %0,%1" : "+d" (rp) : "d" (CPUTIME_PER_SEC / 2));
-	value->tv_nsec = rp.subreg.even * NSEC_PER_USEC / CPUTIME_PER_USEC;
-	value->tv_sec = rp.subreg.odd;
-#else
 	value->tv_nsec = (__cputime % CPUTIME_PER_SEC) * NSEC_PER_USEC / CPUTIME_PER_USEC;
 	value->tv_sec = __cputime / CPUTIME_PER_SEC;
-#endif
 }
 
 /*
@@ -129,17 +112,8 @@ static inline void cputime_to_timeval(const cputime_t cputime,
 				      struct timeval *value)
 {
 	unsigned long long __cputime = (__force unsigned long long) cputime;
-#ifndef CONFIG_64BIT
-	register_pair rp;
-
-	rp.pair = __cputime >> 1;
-	asm ("dr %0,%1" : "+d" (rp) : "d" (CPUTIME_PER_USEC / 2));
-	value->tv_usec = rp.subreg.even / CPUTIME_PER_USEC;
-	value->tv_sec = rp.subreg.odd;
-#else
 	value->tv_usec = (__cputime % CPUTIME_PER_SEC) / CPUTIME_PER_USEC;
 	value->tv_sec = __cputime / CPUTIME_PER_SEC;
-#endif
 }
 
 /*
diff --git a/arch/s390/include/asm/ctl_reg.h b/arch/s390/include/asm/ctl_reg.h
index 31ab9f346d7e..cfad7fca01d6 100644
--- a/arch/s390/include/asm/ctl_reg.h
+++ b/arch/s390/include/asm/ctl_reg.h
@@ -9,20 +9,12 @@
 
 #include <linux/bug.h>
 
-#ifdef CONFIG_64BIT
-# define __CTL_LOAD	"lctlg"
-# define __CTL_STORE	"stctg"
-#else
-# define __CTL_LOAD	"lctl"
-# define __CTL_STORE	"stctl"
-#endif
-
 #define __ctl_load(array, low, high) {					\
 	typedef struct { char _[sizeof(array)]; } addrtype;		\
 									\
 	BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\
 	asm volatile(							\
-		__CTL_LOAD " %1,%2,%0\n"				\
+		"	lctlg	%1,%2,%0\n"				\
 		: : "Q" (*(addrtype *)(&array)), "i" (low), "i" (high));\
 }
 
@@ -31,7 +23,7 @@
 									\
 	BUILD_BUG_ON(sizeof(addrtype) != (high - low + 1) * sizeof(long));\
 	asm volatile(							\
-		__CTL_STORE " %1,%2,%0\n"				\
+		"	stctg	%1,%2,%0\n"				\
 		: "=Q" (*(addrtype *)(&array))				\
 		: "i" (low), "i" (high));				\
 }
@@ -60,9 +52,7 @@ void smp_ctl_clear_bit(int cr, int bit);
 union ctlreg0 {
 	unsigned long val;
 	struct {
-#ifdef CONFIG_64BIT
 		unsigned long	   : 32;
-#endif
 		unsigned long	   : 3;
 		unsigned long lap  : 1; /* Low-address-protection control */
 		unsigned long	   : 4;
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index c9c875d9ed31..5214d15680ab 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -107,11 +107,7 @@
 /*
  * These are used to set parameters in the core dumps.
  */
-#ifndef CONFIG_64BIT
-#define ELF_CLASS	ELFCLASS32
-#else /* CONFIG_64BIT */
 #define ELF_CLASS	ELFCLASS64
-#endif /* CONFIG_64BIT */
 #define ELF_DATA	ELFDATA2MSB
 #define ELF_ARCH	EM_S390
 
diff --git a/arch/s390/include/asm/idals.h b/arch/s390/include/asm/idals.h
index ea5a6e45fd93..a7b2d7504049 100644
--- a/arch/s390/include/asm/idals.h
+++ b/arch/s390/include/asm/idals.h
@@ -19,11 +19,7 @@
 #include <asm/cio.h>
 #include <asm/uaccess.h>
 
-#ifdef CONFIG_64BIT
 #define IDA_SIZE_LOG 12 /* 11 for 2k , 12 for 4k */
-#else
-#define IDA_SIZE_LOG 11 /* 11 for 2k , 12 for 4k */
-#endif
 #define IDA_BLOCK_SIZE (1L<<IDA_SIZE_LOG)
 
 /*
@@ -32,11 +28,7 @@
 static inline int
 idal_is_needed(void *vaddr, unsigned int length)
 {
-#ifdef CONFIG_64BIT
 	return ((__pa(vaddr) + length - 1) >> 31) != 0;
-#else
-	return 0;
-#endif
 }
 
 
@@ -77,7 +69,6 @@ static inline unsigned long *idal_create_words(unsigned long *idaws,
 static inline int
 set_normalized_cda(struct ccw1 * ccw, void *vaddr)
 {
-#ifdef CONFIG_64BIT
 	unsigned int nridaws;
 	unsigned long *idal;
 
@@ -93,7 +84,6 @@ set_normalized_cda(struct ccw1 * ccw, void *vaddr)
 		ccw->flags |= CCW_FLAG_IDA;
 		vaddr = idal;
 	}
-#endif
 	ccw->cda = (__u32)(unsigned long) vaddr;
 	return 0;
 }
@@ -104,12 +94,10 @@ set_normalized_cda(struct ccw1 * ccw, void *vaddr)
 static inline void
 clear_normalized_cda(struct ccw1 * ccw)
 {
-#ifdef CONFIG_64BIT
 	if (ccw->flags & CCW_FLAG_IDA) {
 		kfree((void *)(unsigned long) ccw->cda);
 		ccw->flags &= ~CCW_FLAG_IDA;
 	}
-#endif
 	ccw->cda = 0;
 }
 
@@ -181,12 +169,8 @@ idal_buffer_free(struct idal_buffer *ib)
 static inline int
 __idal_buffer_is_needed(struct idal_buffer *ib)
 {
-#ifdef CONFIG_64BIT
 	return ib->size > (4096ul << ib->page_order) ||
 		idal_is_needed(ib->data[0], ib->size);
-#else
-	return ib->size > (4096ul << ib->page_order);
-#endif
 }
 
 /*
diff --git a/arch/s390/include/asm/jump_label.h b/arch/s390/include/asm/jump_label.h
index 58642fd29c87..510012bceb75 100644
--- a/arch/s390/include/asm/jump_label.h
+++ b/arch/s390/include/asm/jump_label.h
@@ -6,14 +6,6 @@
 #define JUMP_LABEL_NOP_SIZE 6
 #define JUMP_LABEL_NOP_OFFSET 2
 
-#ifdef CONFIG_64BIT
-#define ASM_PTR ".quad"
-#define ASM_ALIGN ".balign 8"
-#else
-#define ASM_PTR ".long"
-#define ASM_ALIGN ".balign 4"
-#endif
-
 /*
  * We use a brcl 0,2 instruction for jump labels at compile time so it
  * can be easily distinguished from a hotpatch generated instruction.
@@ -22,8 +14,8 @@ static __always_inline bool arch_static_branch(struct static_key *key)
 {
 	asm_volatile_goto("0:	brcl 0,"__stringify(JUMP_LABEL_NOP_OFFSET)"\n"
 		".pushsection __jump_table, \"aw\"\n"
-		ASM_ALIGN "\n"
-		ASM_PTR " 0b, %l[label], %0\n"
+		".balign 8\n"
+		".quad 0b, %l[label], %0\n"
 		".popsection\n"
 		: : "X" (key) : : label);
 	return false;
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 34fbcac61133..663f23e37460 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -13,163 +13,6 @@
 #include <asm/cpu.h>
 #include <asm/types.h>
 
-#ifdef CONFIG_32BIT
-
-#define LC_ORDER 0
-#define LC_PAGES 1
-
-struct save_area {
-	u32	ext_save;
-	u64	timer;
-	u64	clk_cmp;
-	u8	pad1[24];
-	u8	psw[8];
-	u32	pref_reg;
-	u8	pad2[20];
-	u32	acc_regs[16];
-	u64	fp_regs[4];
-	u32	gp_regs[16];
-	u32	ctrl_regs[16];
-} __packed;
-
-struct save_area_ext {
-	struct save_area	sa;
-	__vector128		vx_regs[32];
-};
-
-struct _lowcore {
-	psw_t	restart_psw;			/* 0x0000 */
-	psw_t	restart_old_psw;		/* 0x0008 */
-	__u8	pad_0x0010[0x0014-0x0010];	/* 0x0010 */
-	__u32	ipl_parmblock_ptr;		/* 0x0014 */
-	psw_t	external_old_psw;		/* 0x0018 */
-	psw_t	svc_old_psw;			/* 0x0020 */
-	psw_t	program_old_psw;		/* 0x0028 */
-	psw_t	mcck_old_psw;			/* 0x0030 */
-	psw_t	io_old_psw;			/* 0x0038 */
-	__u8	pad_0x0040[0x0058-0x0040];	/* 0x0040 */
-	psw_t	external_new_psw;		/* 0x0058 */
-	psw_t	svc_new_psw;			/* 0x0060 */
-	psw_t	program_new_psw;		/* 0x0068 */
-	psw_t	mcck_new_psw;			/* 0x0070 */
-	psw_t	io_new_psw;			/* 0x0078 */
-	__u32	ext_params;			/* 0x0080 */
-	__u16	ext_cpu_addr;			/* 0x0084 */
-	__u16	ext_int_code;			/* 0x0086 */
-	__u16	svc_ilc;			/* 0x0088 */
-	__u16	svc_code;			/* 0x008a */
-	__u16	pgm_ilc;			/* 0x008c */
-	__u16	pgm_code;			/* 0x008e */
-	__u32	trans_exc_code;			/* 0x0090 */
-	__u16	mon_class_num;			/* 0x0094 */
-	__u8	per_code;			/* 0x0096 */
-	__u8	per_atmid;			/* 0x0097 */
-	__u32	per_address;			/* 0x0098 */
-	__u32	monitor_code;			/* 0x009c */
-	__u8	exc_access_id;			/* 0x00a0 */
-	__u8	per_access_id;			/* 0x00a1 */
-	__u8	op_access_id;			/* 0x00a2 */
-	__u8	ar_mode_id;			/* 0x00a3 */
-	__u8	pad_0x00a4[0x00b8-0x00a4];	/* 0x00a4 */
-	__u16	subchannel_id;			/* 0x00b8 */
-	__u16	subchannel_nr;			/* 0x00ba */
-	__u32	io_int_parm;			/* 0x00bc */
-	__u32	io_int_word;			/* 0x00c0 */
-	__u8	pad_0x00c4[0x00c8-0x00c4];	/* 0x00c4 */
-	__u32	stfl_fac_list;			/* 0x00c8 */
-	__u8	pad_0x00cc[0x00d4-0x00cc];	/* 0x00cc */
-	__u32	extended_save_area_addr;	/* 0x00d4 */
-	__u32	cpu_timer_save_area[2];		/* 0x00d8 */
-	__u32	clock_comp_save_area[2];	/* 0x00e0 */
-	__u32	mcck_interruption_code[2];	/* 0x00e8 */
-	__u8	pad_0x00f0[0x00f4-0x00f0];	/* 0x00f0 */
-	__u32	external_damage_code;		/* 0x00f4 */
-	__u32	failing_storage_address;	/* 0x00f8 */
-	__u8	pad_0x00fc[0x0100-0x00fc];	/* 0x00fc */
-	psw_t	psw_save_area;			/* 0x0100 */
-	__u32	prefixreg_save_area;		/* 0x0108 */
-	__u8	pad_0x010c[0x0120-0x010c];	/* 0x010c */
-
-	/* CPU register save area: defined by architecture */
-	__u32	access_regs_save_area[16];	/* 0x0120 */
-	__u32	floating_pt_save_area[8];	/* 0x0160 */
-	__u32	gpregs_save_area[16];		/* 0x0180 */
-	__u32	cregs_save_area[16];		/* 0x01c0 */
-
-	/* Save areas. */
-	__u32	save_area_sync[8];		/* 0x0200 */
-	__u32	save_area_async[8];		/* 0x0220 */
-	__u32	save_area_restart[1];		/* 0x0240 */
-
-	/* CPU flags. */
-	__u32	cpu_flags;			/* 0x0244 */
-
-	/* Return psws. */
-	psw_t	return_psw;			/* 0x0248 */
-	psw_t	return_mcck_psw;		/* 0x0250 */
-
-	/* CPU time accounting values */
-	__u64	sync_enter_timer;		/* 0x0258 */
-	__u64	async_enter_timer;		/* 0x0260 */
-	__u64	mcck_enter_timer;		/* 0x0268 */
-	__u64	exit_timer;			/* 0x0270 */
-	__u64	user_timer;			/* 0x0278 */
-	__u64	system_timer;			/* 0x0280 */
-	__u64	steal_timer;			/* 0x0288 */
-	__u64	last_update_timer;		/* 0x0290 */
-	__u64	last_update_clock;		/* 0x0298 */
-	__u64	int_clock;			/* 0x02a0 */
-	__u64	mcck_clock;			/* 0x02a8 */
-	__u64	clock_comparator;		/* 0x02b0 */
-
-	/* Current process. */
-	__u32	current_task;			/* 0x02b8 */
-	__u32	thread_info;			/* 0x02bc */
-	__u32	kernel_stack;			/* 0x02c0 */
-
-	/* Interrupt, panic and restart stack. */
-	__u32	async_stack;			/* 0x02c4 */
-	__u32	panic_stack;			/* 0x02c8 */
-	__u32	restart_stack;			/* 0x02cc */
-
-	/* Restart function and parameter. */
-	__u32	restart_fn;			/* 0x02d0 */
-	__u32	restart_data;			/* 0x02d4 */
-	__u32	restart_source;			/* 0x02d8 */
-
-	/* Address space pointer. */
-	__u32	kernel_asce;			/* 0x02dc */
-	__u32	user_asce;			/* 0x02e0 */
-	__u32	current_pid;			/* 0x02e4 */
-
-	/* SMP info area */
-	__u32	cpu_nr;				/* 0x02e8 */
-	__u32	softirq_pending;		/* 0x02ec */
-	__u32	percpu_offset;			/* 0x02f0 */
-	__u32	machine_flags;			/* 0x02f4 */
-	__u8	pad_0x02f8[0x02fc-0x02f8];	/* 0x02f8 */
-	__u32	spinlock_lockval;		/* 0x02fc */
-
-	__u8	pad_0x0300[0x0e00-0x0300];	/* 0x0300 */
-
-	/*
-	 * 0xe00 contains the address of the IPL Parameter Information
-	 * block. Dump tools need IPIB for IPL after dump.
-	 * Note: do not change the position of any fields in 0x0e00-0x0f00
-	 */
-	__u32	ipib;				/* 0x0e00 */
-	__u32	ipib_checksum;			/* 0x0e04 */
-	__u32	vmcore_info;			/* 0x0e08 */
-	__u8	pad_0x0e0c[0x0e18-0x0e0c];	/* 0x0e0c */
-	__u32	os_info;			/* 0x0e18 */
-	__u8	pad_0x0e1c[0x0f00-0x0e1c];	/* 0x0e1c */
-
-	/* Extended facility list */
-	__u64	stfle_fac_list[32];		/* 0x0f00 */
-} __packed;
-
-#else /* CONFIG_32BIT */
-
 #define LC_ORDER 1
 #define LC_PAGES 2
 
@@ -354,8 +197,6 @@ struct _lowcore {
 	__u8	vector_save_area[1024];		/* 0x1c00 */
 } __packed;
 
-#endif /* CONFIG_32BIT */
-
 #define S390_lowcore (*((struct _lowcore *) 0))
 
 extern struct _lowcore *lowcore_ptr[];
diff --git a/arch/s390/include/asm/mman.h b/arch/s390/include/asm/mman.h
index 9977e08df5bd..b55a59e1d134 100644
--- a/arch/s390/include/asm/mman.h
+++ b/arch/s390/include/asm/mman.h
@@ -8,7 +8,7 @@
 
 #include <uapi/asm/mman.h>
 
-#if !defined(__ASSEMBLY__) && defined(CONFIG_64BIT)
+#ifndef __ASSEMBLY__
 int s390_mmap_check(unsigned long addr, unsigned long len, unsigned long flags);
 #define arch_mmap_check(addr, len, flags) s390_mmap_check(addr, len, flags)
 #endif
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index 8fb3802f8fad..d25d9ff10ba8 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -19,9 +19,7 @@ static inline int init_new_context(struct task_struct *tsk,
 	atomic_set(&mm->context.attach_count, 0);
 	mm->context.flush_mm = 0;
 	mm->context.asce_bits = _ASCE_TABLE_LENGTH | _ASCE_USER_BITS;
-#ifdef CONFIG_64BIT
 	mm->context.asce_bits |= _ASCE_TYPE_REGION3;
-#endif
 	mm->context.has_pgste = 0;
 	mm->context.use_skey = 0;
 	mm->context.asce_limit = STACK_TOP_MAX;
@@ -110,10 +108,8 @@ static inline void activate_mm(struct mm_struct *prev,
 static inline void arch_dup_mmap(struct mm_struct *oldmm,
 				 struct mm_struct *mm)
 {
-#ifdef CONFIG_64BIT
 	if (oldmm->context.asce_limit < mm->context.asce_limit)
 		crst_table_downgrade(mm, oldmm->context.asce_limit);
-#endif
 }
 
 static inline void arch_exit_mmap(struct mm_struct *mm)
diff --git a/arch/s390/include/asm/percpu.h b/arch/s390/include/asm/percpu.h
index 933355e0d091..6d6556ca24aa 100644
--- a/arch/s390/include/asm/percpu.h
+++ b/arch/s390/include/asm/percpu.h
@@ -10,8 +10,6 @@
  */
 #define __my_cpu_offset S390_lowcore.percpu_offset
 
-#ifdef CONFIG_64BIT
-
 /*
  * For 64 bit module code, the module may be more than 4G above the
  * per cpu area, use weak definitions to force the compiler to
@@ -183,8 +181,6 @@
 #define this_cpu_cmpxchg_double_4 arch_this_cpu_cmpxchg_double
 #define this_cpu_cmpxchg_double_8 arch_this_cpu_cmpxchg_double
 
-#endif /* CONFIG_64BIT */
-
 #include <asm-generic/percpu.h>
 
 #endif /* __ARCH_S390_PERCPU__ */
diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h
index 159a8ec6da9a..4cb19fe76dd9 100644
--- a/arch/s390/include/asm/perf_event.h
+++ b/arch/s390/include/asm/perf_event.h
@@ -9,8 +9,6 @@
 #ifndef _ASM_S390_PERF_EVENT_H
 #define _ASM_S390_PERF_EVENT_H
 
-#ifdef CONFIG_64BIT
-
 #include <linux/perf_event.h>
 #include <linux/device.h>
 #include <asm/cpu_mf.h>
@@ -92,5 +90,4 @@ struct sf_raw_sample {
 int perf_reserve_sampling(void);
 void perf_release_sampling(void);
 
-#endif /* CONFIG_64BIT */
 #endif /* _ASM_S390_PERF_EVENT_H */
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index 3009c2ba46d2..51e7fb634ebc 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -33,11 +33,7 @@ static inline void clear_table(unsigned long *s, unsigned long val, size_t n)
 	*s = val;
 	n = (n / 256) - 1;
 	asm volatile(
-#ifdef CONFIG_64BIT
 		"	mvc	8(248,%0),0(%0)\n"
-#else
-		"	mvc	4(252,%0),0(%0)\n"
-#endif
 		"0:	mvc	256(256,%0),0(%0)\n"
 		"	la	%0,256(%0)\n"
 		"	brct	%1,0b\n"
@@ -50,24 +46,6 @@ static inline void crst_table_init(unsigned long *crst, unsigned long entry)
 	clear_table(crst, entry, sizeof(unsigned long)*2048);
 }
 
-#ifndef CONFIG_64BIT
-
-static inline unsigned long pgd_entry_type(struct mm_struct *mm)
-{
-	return _SEGMENT_ENTRY_EMPTY;
-}
-
-#define pud_alloc_one(mm,address)		({ BUG(); ((pud_t *)2); })
-#define pud_free(mm, x)				do { } while (0)
-
-#define pmd_alloc_one(mm,address)		({ BUG(); ((pmd_t *)2); })
-#define pmd_free(mm, x)				do { } while (0)
-
-#define pgd_populate(mm, pgd, pud)		BUG()
-#define pud_populate(mm, pud, pmd)		BUG()
-
-#else /* CONFIG_64BIT */
-
 static inline unsigned long pgd_entry_type(struct mm_struct *mm)
 {
 	if (mm->context.asce_limit <= (1UL << 31))
@@ -119,8 +97,6 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
 	pud_val(*pud) = _REGION3_ENTRY | __pa(pmd);
 }
 
-#endif /* CONFIG_64BIT */
-
 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
 {
 	spin_lock_init(&mm->context.list_lock);
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index e08ec38f8c6e..989cfae9e202 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -66,15 +66,9 @@ extern unsigned long zero_page_mask;
  * table can map
  * PGDIR_SHIFT determines what a third-level page table entry can map
  */
-#ifndef CONFIG_64BIT
-# define PMD_SHIFT	20
-# define PUD_SHIFT	20
-# define PGDIR_SHIFT	20
-#else /* CONFIG_64BIT */
-# define PMD_SHIFT	20
-# define PUD_SHIFT	31
-# define PGDIR_SHIFT	42
-#endif /* CONFIG_64BIT */
+#define PMD_SHIFT	20
+#define PUD_SHIFT	31
+#define PGDIR_SHIFT	42
 
 #define PMD_SIZE        (1UL << PMD_SHIFT)
 #define PMD_MASK        (~(PMD_SIZE-1))
@@ -90,15 +84,8 @@ extern unsigned long zero_page_mask;
  * that leads to 1024 pte per pgd
  */
 #define PTRS_PER_PTE	256
-#ifndef CONFIG_64BIT
-#define __PAGETABLE_PUD_FOLDED
-#define PTRS_PER_PMD	1
-#define __PAGETABLE_PMD_FOLDED
-#define PTRS_PER_PUD	1
-#else /* CONFIG_64BIT */
 #define PTRS_PER_PMD	2048
 #define PTRS_PER_PUD	2048
-#endif /* CONFIG_64BIT */
 #define PTRS_PER_PGD	2048
 
 #define FIRST_USER_ADDRESS  0UL
@@ -127,23 +114,19 @@ extern struct page *vmemmap;
 
 #define VMEM_MAX_PHYS ((unsigned long) vmemmap)
 
-#ifdef CONFIG_64BIT
 extern unsigned long MODULES_VADDR;
 extern unsigned long MODULES_END;
 #define MODULES_VADDR	MODULES_VADDR
 #define MODULES_END	MODULES_END
 #define MODULES_LEN	(1UL << 31)
-#endif
 
 static inline int is_module_addr(void *addr)
 {
-#ifdef CONFIG_64BIT
 	BUILD_BUG_ON(MODULES_LEN > (1UL << 31));
 	if (addr < (void *)MODULES_VADDR)
 		return 0;
 	if (addr > (void *)MODULES_END)
 		return 0;
-#endif
 	return 1;
 }
 
@@ -284,56 +267,6 @@ static inline int is_module_addr(void *addr)
  * pte_swap    is true for the bit pattern .10...xxxx10, (pte & 0x603) == 0x402
  */
 
-#ifndef CONFIG_64BIT
-
-/* Bits in the segment table address-space-control-element */
-#define _ASCE_SPACE_SWITCH	0x80000000UL	/* space switch event	    */
-#define _ASCE_ORIGIN_MASK	0x7ffff000UL	/* segment table origin	    */
-#define _ASCE_PRIVATE_SPACE	0x100	/* private space control	    */
-#define _ASCE_ALT_EVENT		0x80	/* storage alteration event control */
-#define _ASCE_TABLE_LENGTH	0x7f	/* 128 x 64 entries = 8k	    */
-
-/* Bits in the segment table entry */
-#define _SEGMENT_ENTRY_BITS	0x7fffffffUL	/* Valid segment table bits */
-#define _SEGMENT_ENTRY_ORIGIN	0x7fffffc0UL	/* page table origin	    */
-#define _SEGMENT_ENTRY_PROTECT	0x200	/* page protection bit		    */
-#define _SEGMENT_ENTRY_INVALID	0x20	/* invalid segment table entry	    */
-#define _SEGMENT_ENTRY_COMMON	0x10	/* common segment bit		    */
-#define _SEGMENT_ENTRY_PTL	0x0f	/* page table length		    */
-
-#define _SEGMENT_ENTRY_DIRTY	0	/* No sw dirty bit for 31-bit */
-#define _SEGMENT_ENTRY_YOUNG	0	/* No sw young bit for 31-bit */
-#define _SEGMENT_ENTRY_READ	0	/* No sw read bit for 31-bit */
-#define _SEGMENT_ENTRY_WRITE	0	/* No sw write bit for 31-bit */
-#define _SEGMENT_ENTRY_LARGE	0	/* No large pages for 31-bit */
-#define _SEGMENT_ENTRY_BITS_LARGE 0
-#define _SEGMENT_ENTRY_ORIGIN_LARGE 0
-
-#define _SEGMENT_ENTRY		(_SEGMENT_ENTRY_PTL)
-#define _SEGMENT_ENTRY_EMPTY	(_SEGMENT_ENTRY_INVALID)
-
-/*
- * Segment table entry encoding (I = invalid, R = read-only bit):
- *		..R...I.....
- * prot-none	..1...1.....
- * read-only	..1...0.....
- * read-write	..0...0.....
- * empty	..0...1.....
- */
-
-/* Page status table bits for virtualization */
-#define PGSTE_ACC_BITS	0xf0000000UL
-#define PGSTE_FP_BIT	0x08000000UL
-#define PGSTE_PCL_BIT	0x00800000UL
-#define PGSTE_HR_BIT	0x00400000UL
-#define PGSTE_HC_BIT	0x00200000UL
-#define PGSTE_GR_BIT	0x00040000UL
-#define PGSTE_GC_BIT	0x00020000UL
-#define PGSTE_UC_BIT	0x00008000UL	/* user dirty (migration) */
-#define PGSTE_IN_BIT	0x00004000UL	/* IPTE notify bit */
-
-#else /* CONFIG_64BIT */
-
 /* Bits in the segment/region table address-space-control-element */
 #define _ASCE_ORIGIN		~0xfffUL/* segment table origin		    */
 #define _ASCE_PRIVATE_SPACE	0x100	/* private space control	    */
@@ -417,8 +350,6 @@ static inline int is_module_addr(void *addr)
 #define PGSTE_UC_BIT	0x0000800000000000UL	/* user dirty (migration) */
 #define PGSTE_IN_BIT	0x0000400000000000UL	/* IPTE notify bit */
 
-#endif /* CONFIG_64BIT */
-
 /* Guest Page State used for virtualization */
 #define _PGSTE_GPS_ZERO		0x0000000080000000UL
 #define _PGSTE_GPS_USAGE_MASK	0x0000000003000000UL
@@ -509,19 +440,6 @@ static inline int mm_use_skey(struct mm_struct *mm)
 /*
  * pgd/pmd/pte query functions
  */
-#ifndef CONFIG_64BIT
-
-static inline int pgd_present(pgd_t pgd) { return 1; }
-static inline int pgd_none(pgd_t pgd)    { return 0; }
-static inline int pgd_bad(pgd_t pgd)     { return 0; }
-
-static inline int pud_present(pud_t pud) { return 1; }
-static inline int pud_none(pud_t pud)	 { return 0; }
-static inline int pud_large(pud_t pud)	 { return 0; }
-static inline int pud_bad(pud_t pud)	 { return 0; }
-
-#else /* CONFIG_64BIT */
-
 static inline int pgd_present(pgd_t pgd)
 {
 	if ((pgd_val(pgd) & _REGION_ENTRY_TYPE_MASK) < _REGION_ENTRY_TYPE_R2)
@@ -583,8 +501,6 @@ static inline int pud_bad(pud_t pud)
 	return (pud_val(pud) & mask) != 0;
 }
 
-#endif /* CONFIG_64BIT */
-
 static inline int pmd_present(pmd_t pmd)
 {
 	return pmd_val(pmd) != _SEGMENT_ENTRY_INVALID;
@@ -916,18 +832,14 @@ static inline int pte_unused(pte_t pte)
 
 static inline void pgd_clear(pgd_t *pgd)
 {
-#ifdef CONFIG_64BIT
 	if ((pgd_val(*pgd) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R2)
 		pgd_val(*pgd) = _REGION2_ENTRY_EMPTY;
-#endif
 }
 
 static inline void pud_clear(pud_t *pud)
 {
-#ifdef CONFIG_64BIT
 	if ((pud_val(*pud) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R3)
 		pud_val(*pud) = _REGION3_ENTRY_EMPTY;
-#endif
 }
 
 static inline void pmd_clear(pmd_t *pmdp)
@@ -1026,10 +938,6 @@ static inline void __ptep_ipte(unsigned long address, pte_t *ptep)
 {
 	unsigned long pto = (unsigned long) ptep;
 
-#ifndef CONFIG_64BIT
-	/* pto in ESA mode must point to the start of the segment table */
-	pto &= 0x7ffffc00;
-#endif
 	/* Invalidation + global TLB flush for the pte */
 	asm volatile(
 		"	ipte	%2,%3"
@@ -1040,10 +948,6 @@ static inline void __ptep_ipte_local(unsigned long address, pte_t *ptep)
 {
 	unsigned long pto = (unsigned long) ptep;
 
-#ifndef CONFIG_64BIT
-	/* pto in ESA mode must point to the start of the segment table */
-	pto &= 0x7ffffc00;
-#endif
 	/* Invalidation + local TLB flush for the pte */
 	asm volatile(
 		"	.insn rrf,0xb2210000,%2,%3,0,1"
@@ -1054,10 +958,6 @@ static inline void __ptep_ipte_range(unsigned long address, int nr, pte_t *ptep)
 {
 	unsigned long pto = (unsigned long) ptep;
 
-#ifndef CONFIG_64BIT
-	/* pto in ESA mode must point to the start of the segment table */
-	pto &= 0x7ffffc00;
-#endif
 	/* Invalidate a range of ptes + global TLB flush of the ptes */
 	do {
 		asm volatile(
@@ -1376,17 +1276,6 @@ static inline pte_t mk_pte(struct page *page, pgprot_t pgprot)
 #define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
 #define pgd_offset_k(address) pgd_offset(&init_mm, address)
 
-#ifndef CONFIG_64BIT
-
-#define pmd_deref(pmd) (pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN)
-#define pud_deref(pmd) ({ BUG(); 0UL; })
-#define pgd_deref(pmd) ({ BUG(); 0UL; })
-
-#define pud_offset(pgd, address) ((pud_t *) pgd)
-#define pmd_offset(pud, address) ((pmd_t *) pud + pmd_index(address))
-
-#else /* CONFIG_64BIT */
-
 #define pmd_deref(pmd) (pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN)
 #define pud_deref(pud) (pud_val(pud) & _REGION_ENTRY_ORIGIN)
 #define pgd_deref(pgd) (pgd_val(pgd) & _REGION_ENTRY_ORIGIN)
@@ -1407,8 +1296,6 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
 	return pmd + pmd_index(address);
 }
 
-#endif /* CONFIG_64BIT */
-
 #define pfn_pte(pfn,pgprot) mk_pte_phys(__pa((pfn) << PAGE_SHIFT),(pgprot))
 #define pte_pfn(x) (pte_val(x) >> PAGE_SHIFT)
 #define pte_page(x) pfn_to_page(pte_pfn(x))
@@ -1729,11 +1616,9 @@ static inline int has_transparent_hugepage(void)
  *  0000000000111111111122222222223333333333444444444455 5555 5 55566 66
  *  0123456789012345678901234567890123456789012345678901 2345 6 78901 23
  */
-#ifndef CONFIG_64BIT
-#define __SWP_OFFSET_MASK (~0UL >> 12)
-#else
+
 #define __SWP_OFFSET_MASK (~0UL >> 11)
-#endif
+
 static inline pte_t mk_swap_pte(unsigned long type, unsigned long offset)
 {
 	pte_t pte;
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index e7cbbdcdee13..dedb6218544b 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -19,7 +19,6 @@
 #define _CIF_ASCE		(1<<CIF_ASCE)
 #define _CIF_NOHZ_DELAY		(1<<CIF_NOHZ_DELAY)
 
-
 #ifndef __ASSEMBLY__
 
 #include <linux/linkage.h>
@@ -66,13 +65,6 @@ extern void execve_tail(void);
 /*
  * User space process size: 2GB for 31 bit, 4TB or 8PT for 64 bit.
  */
-#ifndef CONFIG_64BIT
-
-#define TASK_SIZE		(1UL << 31)
-#define TASK_MAX_SIZE		(1UL << 31)
-#define TASK_UNMAPPED_BASE	(1UL << 30)
-
-#else /* CONFIG_64BIT */
 
 #define TASK_SIZE_OF(tsk)	((tsk)->mm->context.asce_limit)
 #define TASK_UNMAPPED_BASE	(test_thread_flag(TIF_31BIT) ? \
@@ -80,15 +72,8 @@ extern void execve_tail(void);
 #define TASK_SIZE		TASK_SIZE_OF(current)
 #define TASK_MAX_SIZE		(1UL << 53)
 
-#endif /* CONFIG_64BIT */
-
-#ifndef CONFIG_64BIT
-#define STACK_TOP		(1UL << 31)
-#define STACK_TOP_MAX		(1UL << 31)
-#else /* CONFIG_64BIT */
 #define STACK_TOP		(1UL << (test_thread_flag(TIF_31BIT) ? 31:42))
 #define STACK_TOP_MAX		(1UL << 42)
-#endif /* CONFIG_64BIT */
 
 #define HAVE_ARCH_PICK_MMAP_LAYOUT
 
@@ -115,10 +100,8 @@ struct thread_struct {
 	/* cpu runtime instrumentation */
 	struct runtime_instr_cb *ri_cb;
 	int ri_signum;
-#ifdef CONFIG_64BIT
 	unsigned char trap_tdb[256];	/* Transaction abort diagnose block */
 	__vector128 *vxrs;		/* Vector register save area */
-#endif
 };
 
 /* Flag to disable transactions. */
@@ -181,11 +164,7 @@ struct task_struct;
 struct mm_struct;
 struct seq_file;
 
-#ifdef CONFIG_64BIT
-extern void show_cacheinfo(struct seq_file *m);
-#else
-static inline void show_cacheinfo(struct seq_file *m) { }
-#endif
+void show_cacheinfo(struct seq_file *m);
 
 /* Free all resources held by a thread. */
 extern void release_thread(struct task_struct *);
@@ -229,11 +208,7 @@ static inline void psw_set_key(unsigned int key)
  */
 static inline void __load_psw(psw_t psw)
 {
-#ifndef CONFIG_64BIT
-	asm volatile("lpsw  %0" : : "Q" (psw) : "cc");
-#else
 	asm volatile("lpswe %0" : : "Q" (psw) : "cc");
-#endif
 }
 
 /*
@@ -247,22 +222,12 @@ static inline void __load_psw_mask (unsigned long mask)
 
 	psw.mask = mask;
 
-#ifndef CONFIG_64BIT
-	asm volatile(
-		"	basr	%0,0\n"
-		"0:	ahi	%0,1f-0b\n"
-		"	st	%0,%O1+4(%R1)\n"
-		"	lpsw	%1\n"
-		"1:"
-		: "=&d" (addr), "=Q" (psw) : "Q" (psw) : "memory", "cc");
-#else /* CONFIG_64BIT */
 	asm volatile(
 		"	larl	%0,1f\n"
 		"	stg	%0,%O1+8(%R1)\n"
 		"	lpswe	%1\n"
 		"1:"
 		: "=&d" (addr), "=Q" (psw) : "Q" (psw) : "memory", "cc");
-#endif /* CONFIG_64BIT */
 }
 
 /*
@@ -270,20 +235,12 @@ static inline void __load_psw_mask (unsigned long mask)
  */
 static inline unsigned long __rewind_psw(psw_t psw, unsigned long ilc)
 {
-#ifndef CONFIG_64BIT
-	if (psw.addr & PSW_ADDR_AMODE)
-		/* 31 bit mode */
-		return (psw.addr - ilc) | PSW_ADDR_AMODE;
-	/* 24 bit mode */
-	return (psw.addr - ilc) & ((1UL << 24) - 1);
-#else
 	unsigned long mask;
 
 	mask = (psw.mask & PSW_MASK_EA) ? -1UL :
 	       (psw.mask & PSW_MASK_BA) ? (1UL << 31) - 1 :
 					  (1UL << 24) - 1;
 	return (psw.addr - ilc) & mask;
-#endif
 }
 
 /*
@@ -305,26 +262,6 @@ static inline void __noreturn disabled_wait(unsigned long code)
          * Store status and then load disabled wait psw,
          * the processor is dead afterwards
          */
-#ifndef CONFIG_64BIT
-	asm volatile(
-		"	stctl	0,0,0(%2)\n"
-		"	ni	0(%2),0xef\n"	/* switch off protection */
-		"	lctl	0,0,0(%2)\n"
-		"	stpt	0xd8\n"		/* store timer */
-		"	stckc	0xe0\n"		/* store clock comparator */
-		"	stpx	0x108\n"	/* store prefix register */
-		"	stam	0,15,0x120\n"	/* store access registers */
-		"	std	0,0x160\n"	/* store f0 */
-		"	std	2,0x168\n"	/* store f2 */
-		"	std	4,0x170\n"	/* store f4 */
-		"	std	6,0x178\n"	/* store f6 */
-		"	stm	0,15,0x180\n"	/* store general registers */
-		"	stctl	0,15,0x1c0\n"	/* store control registers */
-		"	oi	0x1c0,0x10\n"	/* fake protection bit */
-		"	lpsw	0(%1)"
-		: "=m" (ctl_buf)
-		: "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc");
-#else /* CONFIG_64BIT */
 	asm volatile(
 		"	stctg	0,0,0(%2)\n"
 		"	ni	4(%2),0xef\n"	/* switch off protection */
@@ -357,7 +294,6 @@ static inline void __noreturn disabled_wait(unsigned long code)
 		"	lpswe	0(%1)"
 		: "=m" (ctl_buf)
 		: "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0", "1");
-#endif /* CONFIG_64BIT */
 	while (1);
 }
 
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index be317feff7ac..6feda2599282 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -40,12 +40,8 @@ struct psw_bits {
 	unsigned long long ri	: 1; /* Runtime Instrumentation */
 	unsigned long long	: 6;
 	unsigned long long eaba : 2; /* Addressing Mode */
-#ifdef CONFIG_64BIT
 	unsigned long long	: 31;
 	unsigned long long ia	: 64;/* Instruction Address */
-#else
-	unsigned long long ia	: 31;/* Instruction Address */
-#endif
 };
 
 enum {
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index 06f3034605a1..998b61cd0e56 100644
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -211,11 +211,6 @@ struct qdio_buffer_element {
 	u8 scount;
 	u8 sflags;
 	u32 length;
-#ifdef CONFIG_32BIT
-	/* private: */
-	void *res2;
-	/* public: */
-#endif
 	void *addr;
 } __attribute__ ((packed, aligned(16)));
 
@@ -232,11 +227,6 @@ struct qdio_buffer {
  * @sbal: absolute SBAL address
  */
 struct sl_element {
-#ifdef CONFIG_32BIT
-	/* private: */
-	unsigned long reserved;
-	/* public: */
-#endif
 	unsigned long sbal;
 } __attribute__ ((packed));
 
diff --git a/arch/s390/include/asm/runtime_instr.h b/arch/s390/include/asm/runtime_instr.h
index 830da737ff85..402ad6df4897 100644
--- a/arch/s390/include/asm/runtime_instr.h
+++ b/arch/s390/include/asm/runtime_instr.h
@@ -72,27 +72,19 @@ static inline void store_runtime_instr_cb(struct runtime_instr_cb *cb)
 
 static inline void save_ri_cb(struct runtime_instr_cb *cb_prev)
 {
-#ifdef CONFIG_64BIT
 	if (cb_prev)
 		store_runtime_instr_cb(cb_prev);
-#endif
 }
 
 static inline void restore_ri_cb(struct runtime_instr_cb *cb_next,
 				 struct runtime_instr_cb *cb_prev)
 {
-#ifdef CONFIG_64BIT
 	if (cb_next)
 		load_runtime_instr_cb(cb_next);
 	else if (cb_prev)
 		load_runtime_instr_cb(&runtime_instr_empty_cb);
-#endif
 }
 
-#ifdef CONFIG_64BIT
-extern void exit_thread_runtime_instr(void);
-#else
-static inline void exit_thread_runtime_instr(void) { }
-#endif
+void exit_thread_runtime_instr(void);
 
 #endif /* _RUNTIME_INSTR_H */
diff --git a/arch/s390/include/asm/rwsem.h b/arch/s390/include/asm/rwsem.h
index 487f9b64efb9..4b43ee7e6776 100644
--- a/arch/s390/include/asm/rwsem.h
+++ b/arch/s390/include/asm/rwsem.h
@@ -39,17 +39,10 @@
 #error "please don't include asm/rwsem.h directly, use linux/rwsem.h instead"
 #endif
 
-#ifndef CONFIG_64BIT
-#define RWSEM_UNLOCKED_VALUE	0x00000000
-#define RWSEM_ACTIVE_BIAS	0x00000001
-#define RWSEM_ACTIVE_MASK	0x0000ffff
-#define RWSEM_WAITING_BIAS	(-0x00010000)
-#else /* CONFIG_64BIT */
 #define RWSEM_UNLOCKED_VALUE	0x0000000000000000L
 #define RWSEM_ACTIVE_BIAS	0x0000000000000001L
 #define RWSEM_ACTIVE_MASK	0x00000000ffffffffL
 #define RWSEM_WAITING_BIAS	(-0x0000000100000000L)
-#endif /* CONFIG_64BIT */
 #define RWSEM_ACTIVE_READ_BIAS	RWSEM_ACTIVE_BIAS
 #define RWSEM_ACTIVE_WRITE_BIAS	(RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
 
@@ -61,19 +54,11 @@ static inline void __down_read(struct rw_semaphore *sem)
 	signed long old, new;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	ahi	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	aghi	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS)
 		: "cc", "memory");
@@ -89,15 +74,6 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
 	signed long old, new;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	ltr	%1,%0\n"
-		"	jm	1f\n"
-		"	ahi	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b\n"
-		"1:"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	ltgr	%1,%0\n"
 		"	jm	1f\n"
@@ -105,7 +81,6 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
 		"	csg	%0,%1,%2\n"
 		"	jl	0b\n"
 		"1:"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS)
 		: "cc", "memory");
@@ -121,19 +96,11 @@ static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
 
 	tmp = RWSEM_ACTIVE_WRITE_BIAS;
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	a	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	ag	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "m" (tmp)
 		: "cc", "memory");
@@ -154,19 +121,11 @@ static inline int __down_write_trylock(struct rw_semaphore *sem)
 	signed long old;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%1\n"
-		"0:	ltr	%0,%0\n"
-		"	jnz	1f\n"
-		"	cs	%0,%3,%1\n"
-		"	jl	0b\n"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%1\n"
 		"0:	ltgr	%0,%0\n"
 		"	jnz	1f\n"
 		"	csg	%0,%3,%1\n"
 		"	jl	0b\n"
-#endif /* CONFIG_64BIT */
 		"1:"
 		: "=&d" (old), "=Q" (sem->count)
 		: "Q" (sem->count), "d" (RWSEM_ACTIVE_WRITE_BIAS)
@@ -182,19 +141,11 @@ static inline void __up_read(struct rw_semaphore *sem)
 	signed long old, new;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	ahi	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	aghi	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "i" (-RWSEM_ACTIVE_READ_BIAS)
 		: "cc", "memory");
@@ -212,19 +163,11 @@ static inline void __up_write(struct rw_semaphore *sem)
 
 	tmp = -RWSEM_ACTIVE_WRITE_BIAS;
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	a	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	ag	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "m" (tmp)
 		: "cc", "memory");
@@ -242,19 +185,11 @@ static inline void __downgrade_write(struct rw_semaphore *sem)
 
 	tmp = -RWSEM_WAITING_BIAS;
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	a	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	ag	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "m" (tmp)
 		: "cc", "memory");
@@ -270,19 +205,11 @@ static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
 	signed long old, new;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	ar	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	agr	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "d" (delta)
 		: "cc", "memory");
@@ -296,19 +223,11 @@ static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
 	signed long old, new;
 
 	asm volatile(
-#ifndef CONFIG_64BIT
-		"	l	%0,%2\n"
-		"0:	lr	%1,%0\n"
-		"	ar	%1,%4\n"
-		"	cs	%0,%1,%2\n"
-		"	jl	0b"
-#else /* CONFIG_64BIT */
 		"	lg	%0,%2\n"
 		"0:	lgr	%1,%0\n"
 		"	agr	%1,%4\n"
 		"	csg	%0,%1,%2\n"
 		"	jl	0b"
-#endif /* CONFIG_64BIT */
 		: "=&d" (old), "=&d" (new), "=Q" (sem->count)
 		: "Q" (sem->count), "d" (delta)
 		: "cc", "memory");
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index b8d1e54b4733..b8ffc1bd0a9f 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -15,19 +15,11 @@
 #include <asm/lowcore.h>
 #include <asm/types.h>
 
-#ifndef CONFIG_64BIT
-#define IPL_DEVICE        (*(unsigned long *)  (0x10404))
-#define INITRD_START      (*(unsigned long *)  (0x1040C))
-#define INITRD_SIZE       (*(unsigned long *)  (0x10414))
-#define OLDMEM_BASE	  (*(unsigned long *)  (0x1041C))
-#define OLDMEM_SIZE	  (*(unsigned long *)  (0x10424))
-#else /* CONFIG_64BIT */
 #define IPL_DEVICE        (*(unsigned long *)  (0x10400))
 #define INITRD_START      (*(unsigned long *)  (0x10408))
 #define INITRD_SIZE       (*(unsigned long *)  (0x10410))
 #define OLDMEM_BASE	  (*(unsigned long *)  (0x10418))
 #define OLDMEM_SIZE	  (*(unsigned long *)  (0x10420))
-#endif /* CONFIG_64BIT */
 #define COMMAND_LINE      ((char *)            (0x10480))
 
 extern int memory_end_set;
@@ -68,26 +60,8 @@ extern void detect_memory_memblock(void);
 #define MACHINE_HAS_PFMF	MACHINE_HAS_EDAT1
 #define MACHINE_HAS_HPAGE	MACHINE_HAS_EDAT1
 
-#ifndef CONFIG_64BIT
-#define MACHINE_HAS_IEEE	(S390_lowcore.machine_flags & MACHINE_FLAG_IEEE)
-#define MACHINE_HAS_CSP		(S390_lowcore.machine_flags & MACHINE_FLAG_CSP)
-#define MACHINE_HAS_IDTE	(0)
-#define MACHINE_HAS_DIAG44	(1)
-#define MACHINE_HAS_MVPG	(S390_lowcore.machine_flags & MACHINE_FLAG_MVPG)
-#define MACHINE_HAS_EDAT1	(0)
-#define MACHINE_HAS_EDAT2	(0)
-#define MACHINE_HAS_LPP		(0)
-#define MACHINE_HAS_TOPOLOGY	(0)
-#define MACHINE_HAS_TE		(0)
-#define MACHINE_HAS_TLB_LC	(0)
-#define MACHINE_HAS_VX		(0)
-#define MACHINE_HAS_CAD		(0)
-#else /* CONFIG_64BIT */
-#define MACHINE_HAS_IEEE	(1)
-#define MACHINE_HAS_CSP		(1)
 #define MACHINE_HAS_IDTE	(S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
 #define MACHINE_HAS_DIAG44	(S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
-#define MACHINE_HAS_MVPG	(1)
 #define MACHINE_HAS_EDAT1	(S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
 #define MACHINE_HAS_EDAT2	(S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
 #define MACHINE_HAS_LPP		(S390_lowcore.machine_flags & MACHINE_FLAG_LPP)
@@ -96,7 +70,6 @@ extern void detect_memory_memblock(void);
 #define MACHINE_HAS_TLB_LC	(S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
 #define MACHINE_HAS_VX		(S390_lowcore.machine_flags & MACHINE_FLAG_VX)
 #define MACHINE_HAS_CAD		(S390_lowcore.machine_flags & MACHINE_FLAG_CAD)
-#endif /* CONFIG_64BIT */
 
 /*
  * Console mode. Override with conmode=
@@ -135,19 +108,11 @@ extern void (*_machine_power_off)(void);
 
 #else /* __ASSEMBLY__ */
 
-#ifndef CONFIG_64BIT
-#define IPL_DEVICE        0x10404
-#define INITRD_START      0x1040C
-#define INITRD_SIZE       0x10414
-#define OLDMEM_BASE	  0x1041C
-#define OLDMEM_SIZE	  0x10424
-#else /* CONFIG_64BIT */
 #define IPL_DEVICE        0x10400
 #define INITRD_START      0x10408
 #define INITRD_SIZE       0x10410
 #define OLDMEM_BASE	  0x10418
 #define OLDMEM_SIZE	  0x10420
-#endif /* CONFIG_64BIT */
 #define COMMAND_LINE      0x10480
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/s390/include/asm/sfp-util.h b/arch/s390/include/asm/sfp-util.h
index 5959bfb3b693..c8b7cf9d6279 100644
--- a/arch/s390/include/asm/sfp-util.h
+++ b/arch/s390/include/asm/sfp-util.h
@@ -51,7 +51,6 @@
 	wl = __wl;					\
 })
 
-#ifdef CONFIG_64BIT
 #define udiv_qrnnd(q, r, n1, n0, d)			\
   do { unsigned long __n;				\
        unsigned int __r, __d;				\
@@ -60,15 +59,6 @@
     (q) = __n / __d;					\
     (r) = __n % __d;					\
   } while (0)
-#else
-#define udiv_qrnnd(q, r, n1, n0, d)			\
-  do { unsigned int __r;				\
-    (q) = __udiv_qrnnd (&__r, (n1), (n0), (d));		\
-    (r) = __r;						\
-  } while (0)
-extern unsigned long __udiv_qrnnd (unsigned int *, unsigned int,
-				   unsigned int , unsigned int);
-#endif
 
 #define UDIV_NEEDS_NORMALIZATION 0
 
diff --git a/arch/s390/include/asm/sparsemem.h b/arch/s390/include/asm/sparsemem.h
index a60d085ddb4d..487428b6d099 100644
--- a/arch/s390/include/asm/sparsemem.h
+++ b/arch/s390/include/asm/sparsemem.h
@@ -1,16 +1,7 @@
 #ifndef _ASM_S390_SPARSEMEM_H
 #define _ASM_S390_SPARSEMEM_H
 
-#ifdef CONFIG_64BIT
-
 #define SECTION_SIZE_BITS	28
 #define MAX_PHYSMEM_BITS	46
 
-#else
-
-#define SECTION_SIZE_BITS	25
-#define MAX_PHYSMEM_BITS	31
-
-#endif /* CONFIG_64BIT */
-
 #endif /* _ASM_S390_SPARSEMEM_H */
diff --git a/arch/s390/include/asm/switch_to.h b/arch/s390/include/asm/switch_to.h
index 2542a7e4c8b4..d62e7a69605f 100644
--- a/arch/s390/include/asm/switch_to.h
+++ b/arch/s390/include/asm/switch_to.h
@@ -18,9 +18,6 @@ static inline int test_fp_ctl(u32 fpc)
 	u32 orig_fpc;
 	int rc;
 
-	if (!MACHINE_HAS_IEEE)
-		return 0;
-
 	asm volatile(
 		"	efpc    %1\n"
 		"	sfpc	%2\n"
@@ -35,9 +32,6 @@ static inline int test_fp_ctl(u32 fpc)
 
 static inline void save_fp_ctl(u32 *fpc)
 {
-	if (!MACHINE_HAS_IEEE)
-		return;
-
 	asm volatile(
 		"       stfpc   %0\n"
 		: "+Q" (*fpc));
@@ -47,9 +41,6 @@ static inline int restore_fp_ctl(u32 *fpc)
 {
 	int rc;
 
-	if (!MACHINE_HAS_IEEE)
-		return 0;
-
 	asm volatile(
 		"	lfpc    %1\n"
 		"0:	la	%0,0\n"
@@ -65,8 +56,6 @@ static inline void save_fp_regs(freg_t *fprs)
 	asm volatile("std 2,%0" : "=Q" (fprs[2]));
 	asm volatile("std 4,%0" : "=Q" (fprs[4]));
 	asm volatile("std 6,%0" : "=Q" (fprs[6]));
-	if (!MACHINE_HAS_IEEE)
-		return;
 	asm volatile("std 1,%0" : "=Q" (fprs[1]));
 	asm volatile("std 3,%0" : "=Q" (fprs[3]));
 	asm volatile("std 5,%0" : "=Q" (fprs[5]));
@@ -87,8 +76,6 @@ static inline void restore_fp_regs(freg_t *fprs)
 	asm volatile("ld 2,%0" : : "Q" (fprs[2]));
 	asm volatile("ld 4,%0" : : "Q" (fprs[4]));
 	asm volatile("ld 6,%0" : : "Q" (fprs[6]));
-	if (!MACHINE_HAS_IEEE)
-		return;
 	asm volatile("ld 1,%0" : : "Q" (fprs[1]));
 	asm volatile("ld 3,%0" : : "Q" (fprs[3]));
 	asm volatile("ld 5,%0" : : "Q" (fprs[5]));
@@ -140,22 +127,18 @@ static inline void restore_vx_regs(__vector128 *vxrs)
 
 static inline void save_fp_vx_regs(struct task_struct *task)
 {
-#ifdef CONFIG_64BIT
 	if (task->thread.vxrs)
 		save_vx_regs(task->thread.vxrs);
 	else
-#endif
-	save_fp_regs(task->thread.fp_regs.fprs);
+		save_fp_regs(task->thread.fp_regs.fprs);
 }
 
 static inline void restore_fp_vx_regs(struct task_struct *task)
 {
-#ifdef CONFIG_64BIT
 	if (task->thread.vxrs)
 		restore_vx_regs(task->thread.vxrs);
 	else
-#endif
-	restore_fp_regs(task->thread.fp_regs.fprs);
+		restore_fp_regs(task->thread.fp_regs.fprs);
 }
 
 static inline void save_access_regs(unsigned int *acrs)
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index ef1df718642d..3df4aa13291d 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -10,13 +10,8 @@
 /*
  * Size of kernel stack for each process
  */
-#ifndef CONFIG_64BIT
-#define THREAD_ORDER 1
-#define ASYNC_ORDER  1
-#else /* CONFIG_64BIT */
 #define THREAD_ORDER 2
 #define ASYNC_ORDER  2
-#endif /* CONFIG_64BIT */
 
 #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
 #define ASYNC_SIZE  (PAGE_SIZE << ASYNC_ORDER)
@@ -99,10 +94,6 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_31BIT		(1<<TIF_31BIT)
 #define _TIF_SINGLE_STEP	(1<<TIF_SINGLE_STEP)
 
-#ifdef CONFIG_64BIT
 #define is_32bit_task()		(test_thread_flag(TIF_31BIT))
-#else
-#define is_32bit_task()		(1)
-#endif
 
 #endif /* _ASM_THREAD_INFO_H */
diff --git a/arch/s390/include/asm/tlb.h b/arch/s390/include/asm/tlb.h
index 06d8741ad6f4..7a92e69c50bc 100644
--- a/arch/s390/include/asm/tlb.h
+++ b/arch/s390/include/asm/tlb.h
@@ -118,12 +118,10 @@ static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
 static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
 				unsigned long address)
 {
-#ifdef CONFIG_64BIT
 	if (tlb->mm->context.asce_limit <= (1UL << 31))
 		return;
 	pgtable_pmd_page_dtor(virt_to_page(pmd));
 	tlb_remove_table(tlb, pmd);
-#endif
 }
 
 /*
@@ -136,11 +134,9 @@ static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
 static inline void pud_free_tlb(struct mmu_gather *tlb, pud_t *pud,
 				unsigned long address)
 {
-#ifdef CONFIG_64BIT
 	if (tlb->mm->context.asce_limit <= (1UL << 42))
 		return;
 	tlb_remove_table(tlb, pud);
-#endif
 }
 
 #define tlb_start_vma(tlb, vma)			do { } while (0)
diff --git a/arch/s390/include/asm/tlbflush.h b/arch/s390/include/asm/tlbflush.h
index 16c9c88658c8..ca148f7c3eaa 100644
--- a/arch/s390/include/asm/tlbflush.h
+++ b/arch/s390/include/asm/tlbflush.h
@@ -49,13 +49,6 @@ static inline void __tlb_flush_global(void)
 	register unsigned long reg4 asm("4");
 	long dummy;
 
-#ifndef CONFIG_64BIT
-	if (!MACHINE_HAS_CSP) {
-		smp_ptlb_all();
-		return;
-	}
-#endif /* CONFIG_64BIT */
-
 	dummy = 0;
 	reg2 = reg3 = 0;
 	reg4 = ((unsigned long) &dummy) + 1;
diff --git a/arch/s390/include/asm/types.h b/arch/s390/include/asm/types.h
index dccef3ca91fa..6740f4f9781f 100644
--- a/arch/s390/include/asm/types.h
+++ b/arch/s390/include/asm/types.h
@@ -8,21 +8,4 @@
 
 #include <uapi/asm/types.h>
 
-/*
- * These aren't exported outside the kernel to avoid name space clashes
- */
-
-#ifndef __ASSEMBLY__
-
-#ifndef CONFIG_64BIT
-typedef union {
-	unsigned long long pair;
-	struct {
-		unsigned long even;
-		unsigned long odd;
-	} subreg;
-} register_pair;
-
-#endif /* ! CONFIG_64BIT   */
-#endif /* __ASSEMBLY__  */
 #endif /* _S390_TYPES_H */
diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index 651886353551..91f56b1d8156 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -9,11 +9,7 @@
 #include <uapi/asm/unistd.h>
 
 
-#ifndef CONFIG_64BIT
-#define __IGNORE_select
-#else
 #define __IGNORE_time
-#endif
 
 /* Ignore NUMA system calls. Not wired up on s390. */
 #define __IGNORE_mbind
@@ -43,10 +39,6 @@
 #define __ARCH_WANT_SYS_OLDUMOUNT
 #define __ARCH_WANT_SYS_SIGPENDING
 #define __ARCH_WANT_SYS_SIGPROCMASK
-# ifndef CONFIG_64BIT
-#   define __ARCH_WANT_STAT64
-#   define __ARCH_WANT_SYS_TIME
-# endif
 # ifdef CONFIG_COMPAT
 #   define __ARCH_WANT_COMPAT_SYS_TIME
 # endif
diff --git a/arch/s390/include/asm/vdso.h b/arch/s390/include/asm/vdso.h
index a62526d09201..787acd4f9668 100644
--- a/arch/s390/include/asm/vdso.h
+++ b/arch/s390/include/asm/vdso.h
@@ -42,10 +42,8 @@ struct vdso_per_cpu_data {
 
 extern struct vdso_data *vdso_data;
 
-#ifdef CONFIG_64BIT
 int vdso_alloc_per_cpu(struct _lowcore *lowcore);
 void vdso_free_per_cpu(struct _lowcore *lowcore);
-#endif
 
 #endif /* __ASSEMBLY__ */
 #endif /* __S390_VDSO_H__ */