Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:
 "The major change in this merge is the removal of the support for
  31-bit kernels.  Naturally 31-bit user space will continue to work via
  the compat layer.

  And then some cleanup, some improvements and bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (23 commits)
  s390/smp: wait until secondaries are active & online
  s390/hibernate: fix save and restore of kernel text section
  s390/cacheinfo: add missing facility check
  s390/syscalls: simplify syscall_get_arch()
  s390/irq: enforce correct irqclass_sub_desc array size
  s390: remove "64" suffix from mem64.S and swsusp_asm64.S
  s390/ipl: cleanup macro usage
  s390/ipl: cleanup shutdown_action attributes
  s390/ipl: cleanup bin attr usage
  s390/uprobes: fix address space annotation
  s390: add missing arch_release_task_struct() declaration
  s390: make couple of functions and variables static
  s390/maccess: improve s390_kernel_write()
  s390/maccess: remove potentially broken probe_kernel_write()
  s390/watchdog: support for KVM hypervisors and delete pr_info messages
  s390/watchdog: enable KEEPALIVE for /dev/watchdog
  s390/dasd: remove setting of scheduler from driver
  s390/traps: panic() instead of die() on translation exception
  s390: remove test_facility(2) (== z/Architecture mode active) checks
  s390/cmpxchg: simplify cmpxchg_double
  ...

33 files changed, 19 insertions, 826 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/cmpxchg.h b/arch/s390/include/asm/cmpxchg.h
index 6259895fcd97..4eadec466b8c 100644
--- a/arch/s390/include/asm/cmpxchg.h
+++ b/arch/s390/include/asm/cmpxchg.h
@@ -80,15 +80,10 @@ extern void __cmpxchg_double_called_with_bad_pointer(void);
 ({									\
 	__typeof__(p1) __p1 = (p1);					\
 	__typeof__(p2) __p2 = (p2);					\
-	int __ret;							\
 	BUILD_BUG_ON(sizeof(*(p1)) != sizeof(long));			\
 	BUILD_BUG_ON(sizeof(*(p2)) != sizeof(long));			\
 	VM_BUG_ON((unsigned long)((__p1) + 1) != (unsigned long)(__p2));\
-	if (sizeof(long) == 4)						\
-		__ret = __cmpxchg_double_4(__p1, __p2, o1, o2, n1, n2);	\
-	else								\
-		__ret = __cmpxchg_double_8(__p1, __p2, o1, o2, n1, n2);	\
-	__ret;								\
+	__cmpxchg_double_8(__p1, __p2, o1, o2, n1, n2);			\
 })
 
 #define system_has_cmpxchg_double()	1
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 a5c4978462c1..3ad48f22de78 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 2b77e235b5fb..69972b7957ee 100644
--- a/arch/s390/include/asm/jump_label.h
+++ b/arch/s390/include/asm/jump_label.h
@@ -8,14 +8,6 @@
 #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.
@@ -24,8 +16,8 @@ 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/syscall.h b/arch/s390/include/asm/syscall.h
index 5bc12598ae9e..6ba0bf928909 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -95,6 +95,6 @@ static inline int syscall_get_arch(void)
 	if (test_tsk_thread_flag(current, TIF_31BIT))
 		return AUDIT_ARCH_S390;
 #endif
-	return sizeof(long) == 8 ? AUDIT_ARCH_S390X : AUDIT_ARCH_S390;
+	return AUDIT_ARCH_S390X;
 }
 #endif	/* _ASM_SYSCALL_H */
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index ef1df718642d..d532098d98bf 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)
@@ -66,6 +61,8 @@ static inline struct thread_info *current_thread_info(void)
 	return (struct thread_info *) S390_lowcore.thread_info;
 }
 
+void arch_release_task_struct(struct task_struct *tsk);
+
 #define THREAD_SIZE_ORDER THREAD_ORDER
 
 #endif
@@ -99,10 +96,6 @@ 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/uaccess.h b/arch/s390/include/asm/uaccess.h
index cd4c68e0398d..d64a7a62164f 100644
--- a/arch/s390/include/asm/uaccess.h
+++ b/arch/s390/include/asm/uaccess.h
@@ -372,5 +372,6 @@ static inline unsigned long __must_check clear_user(void __user *to, unsigned lo
 }
 
 int copy_to_user_real(void __user *dest, void *src, unsigned long count);
+void s390_kernel_write(void *dst, const void *src, size_t size);
 
 #endif /* __S390_UACCESS_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__ */