17 files changed, 143 insertions, 110 deletions

diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index f4e53c6708dc..b416aa11b91e 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.31
-# Tue Sep 22 17:43:13 2009
+# Linux kernel version: 2.6.33-rc2
+# Mon Jan  4 09:03:07 2010
 #
 CONFIG_SCHED_MC=y
 CONFIG_MMU=y
@@ -51,6 +51,7 @@ CONFIG_AUDIT=y
 #
 CONFIG_TREE_RCU=y
 # CONFIG_TREE_PREEMPT_RCU is not set
+# CONFIG_TINY_RCU is not set
 # CONFIG_RCU_TRACE is not set
 CONFIG_RCU_FANOUT=64
 # CONFIG_RCU_FANOUT_EXACT is not set
@@ -113,7 +114,6 @@ CONFIG_HAVE_PERF_EVENTS=y
 # CONFIG_PERF_EVENTS is not set
 # CONFIG_PERF_COUNTERS is not set
 CONFIG_VM_EVENT_COUNTERS=y
-# CONFIG_STRIP_ASM_SYMS is not set
 # CONFIG_COMPAT_BRK is not set
 CONFIG_SLAB=y
 # CONFIG_SLUB is not set
@@ -149,21 +149,78 @@ CONFIG_STOP_MACHINE=y
 CONFIG_BLOCK=y
 CONFIG_BLK_DEV_BSG=y
 # CONFIG_BLK_DEV_INTEGRITY is not set
+# CONFIG_BLK_CGROUP is not set
 CONFIG_BLOCK_COMPAT=y
 
 #
 # IO Schedulers
 #
 CONFIG_IOSCHED_NOOP=y
-CONFIG_IOSCHED_AS=y
 CONFIG_IOSCHED_DEADLINE=y
 CONFIG_IOSCHED_CFQ=y
-# CONFIG_DEFAULT_AS is not set
+# CONFIG_CFQ_GROUP_IOSCHED is not set
 CONFIG_DEFAULT_DEADLINE=y
 # CONFIG_DEFAULT_CFQ is not set
 # CONFIG_DEFAULT_NOOP is not set
 CONFIG_DEFAULT_IOSCHED="deadline"
 CONFIG_PREEMPT_NOTIFIERS=y
+CONFIG_ARCH_INLINE_SPIN_TRYLOCK=y
+CONFIG_ARCH_INLINE_SPIN_TRYLOCK_BH=y
+CONFIG_ARCH_INLINE_SPIN_LOCK=y
+CONFIG_ARCH_INLINE_SPIN_LOCK_BH=y
+CONFIG_ARCH_INLINE_SPIN_LOCK_IRQ=y
+CONFIG_ARCH_INLINE_SPIN_LOCK_IRQSAVE=y
+CONFIG_ARCH_INLINE_SPIN_UNLOCK=y
+CONFIG_ARCH_INLINE_SPIN_UNLOCK_BH=y
+CONFIG_ARCH_INLINE_SPIN_UNLOCK_IRQ=y
+CONFIG_ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE=y
+CONFIG_ARCH_INLINE_READ_TRYLOCK=y
+CONFIG_ARCH_INLINE_READ_LOCK=y
+CONFIG_ARCH_INLINE_READ_LOCK_BH=y
+CONFIG_ARCH_INLINE_READ_LOCK_IRQ=y
+CONFIG_ARCH_INLINE_READ_LOCK_IRQSAVE=y
+CONFIG_ARCH_INLINE_READ_UNLOCK=y
+CONFIG_ARCH_INLINE_READ_UNLOCK_BH=y
+CONFIG_ARCH_INLINE_READ_UNLOCK_IRQ=y
+CONFIG_ARCH_INLINE_READ_UNLOCK_IRQRESTORE=y
+CONFIG_ARCH_INLINE_WRITE_TRYLOCK=y
+CONFIG_ARCH_INLINE_WRITE_LOCK=y
+CONFIG_ARCH_INLINE_WRITE_LOCK_BH=y
+CONFIG_ARCH_INLINE_WRITE_LOCK_IRQ=y
+CONFIG_ARCH_INLINE_WRITE_LOCK_IRQSAVE=y
+CONFIG_ARCH_INLINE_WRITE_UNLOCK=y
+CONFIG_ARCH_INLINE_WRITE_UNLOCK_BH=y
+CONFIG_ARCH_INLINE_WRITE_UNLOCK_IRQ=y
+CONFIG_ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE=y
+# CONFIG_INLINE_SPIN_TRYLOCK is not set
+# CONFIG_INLINE_SPIN_TRYLOCK_BH is not set
+# CONFIG_INLINE_SPIN_LOCK is not set
+# CONFIG_INLINE_SPIN_LOCK_BH is not set
+# CONFIG_INLINE_SPIN_LOCK_IRQ is not set
+# CONFIG_INLINE_SPIN_LOCK_IRQSAVE is not set
+# CONFIG_INLINE_SPIN_UNLOCK is not set
+# CONFIG_INLINE_SPIN_UNLOCK_BH is not set
+# CONFIG_INLINE_SPIN_UNLOCK_IRQ is not set
+# CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE is not set
+# CONFIG_INLINE_READ_TRYLOCK is not set
+# CONFIG_INLINE_READ_LOCK is not set
+# CONFIG_INLINE_READ_LOCK_BH is not set
+# CONFIG_INLINE_READ_LOCK_IRQ is not set
+# CONFIG_INLINE_READ_LOCK_IRQSAVE is not set
+# CONFIG_INLINE_READ_UNLOCK is not set
+# CONFIG_INLINE_READ_UNLOCK_BH is not set
+# CONFIG_INLINE_READ_UNLOCK_IRQ is not set
+# CONFIG_INLINE_READ_UNLOCK_IRQRESTORE is not set
+# CONFIG_INLINE_WRITE_TRYLOCK is not set
+# CONFIG_INLINE_WRITE_LOCK is not set
+# CONFIG_INLINE_WRITE_LOCK_BH is not set
+# CONFIG_INLINE_WRITE_LOCK_IRQ is not set
+# CONFIG_INLINE_WRITE_LOCK_IRQSAVE is not set
+# CONFIG_INLINE_WRITE_UNLOCK is not set
+# CONFIG_INLINE_WRITE_UNLOCK_BH is not set
+# CONFIG_INLINE_WRITE_UNLOCK_IRQ is not set
+# CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE is not set
+# CONFIG_MUTEX_SPIN_ON_OWNER is not set
 CONFIG_FREEZER=y
 
 #
@@ -227,14 +284,13 @@ CONFIG_MEMORY_HOTPLUG=y
 CONFIG_MEMORY_HOTPLUG_SPARSE=y
 CONFIG_MEMORY_HOTREMOVE=y
 CONFIG_PAGEFLAGS_EXTENDED=y
-CONFIG_SPLIT_PTLOCK_CPUS=4
+CONFIG_SPLIT_PTLOCK_CPUS=999999
 CONFIG_MIGRATION=y
 CONFIG_PHYS_ADDR_T_64BIT=y
 CONFIG_ZONE_DMA_FLAG=1
 CONFIG_BOUNCE=y
 CONFIG_VIRT_TO_BUS=y
-CONFIG_HAVE_MLOCK=y
-CONFIG_HAVE_MLOCKED_PAGE_BIT=y
+# CONFIG_KSM is not set
 CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
 
 #
@@ -339,6 +395,7 @@ CONFIG_INET6_XFRM_MODE_TUNNEL=y
 CONFIG_INET6_XFRM_MODE_BEET=y
 # CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
 CONFIG_IPV6_SIT=y
+# CONFIG_IPV6_SIT_6RD is not set
 CONFIG_IPV6_NDISC_NODETYPE=y
 # CONFIG_IPV6_TUNNEL is not set
 # CONFIG_IPV6_MULTIPLE_TABLES is not set
@@ -504,6 +561,10 @@ CONFIG_BLK_DEV=y
 # CONFIG_BLK_DEV_COW_COMMON is not set
 CONFIG_BLK_DEV_LOOP=m
 # CONFIG_BLK_DEV_CRYPTOLOOP is not set
+
+#
+# DRBD disabled because PROC_FS, INET or CONNECTOR not selected
+#
 CONFIG_BLK_DEV_NBD=m
 # CONFIG_BLK_DEV_OSD is not set
 CONFIG_BLK_DEV_RAM=y
@@ -710,7 +771,6 @@ CONFIG_S390_VMUR=m
 # CONFIG_PPS is not set
 # CONFIG_POWER_SUPPLY is not set
 # CONFIG_THERMAL is not set
-# CONFIG_THERMAL_HWMON is not set
 # CONFIG_WATCHDOG is not set
 # CONFIG_REGULATOR is not set
 # CONFIG_MEMSTICK is not set
@@ -864,6 +924,7 @@ CONFIG_ENABLE_WARN_DEPRECATED=y
 CONFIG_ENABLE_MUST_CHECK=y
 CONFIG_FRAME_WARN=2048
 CONFIG_MAGIC_SYSRQ=y
+# CONFIG_STRIP_ASM_SYMS is not set
 # CONFIG_UNUSED_SYMBOLS is not set
 CONFIG_DEBUG_FS=y
 # CONFIG_HEADERS_CHECK is not set
@@ -931,7 +992,6 @@ CONFIG_BRANCH_PROFILE_NONE=y
 CONFIG_SAMPLES=y
 # CONFIG_SAMPLE_KOBJECT is not set
 # CONFIG_SAMPLE_KPROBES is not set
-# CONFIG_KMEMCHECK is not set
 
 #
 # Security options
@@ -939,7 +999,11 @@ CONFIG_SAMPLES=y
 # CONFIG_KEYS is not set
 # CONFIG_SECURITY is not set
 # CONFIG_SECURITYFS is not set
-# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+# CONFIG_DEFAULT_SECURITY_SELINUX is not set
+# CONFIG_DEFAULT_SECURITY_SMACK is not set
+# CONFIG_DEFAULT_SECURITY_TOMOYO is not set
+CONFIG_DEFAULT_SECURITY_DAC=y
+CONFIG_DEFAULT_SECURITY=""
 CONFIG_CRYPTO=y
 
 #
diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h
index efb74fd5156e..b1066b9fb5f8 100644
--- a/arch/s390/include/asm/bug.h
+++ b/arch/s390/include/asm/bug.h
@@ -52,6 +52,10 @@
 	unreachable();					\
 } while (0)
 
+#define __WARN() do {					\
+	__EMIT_BUG(BUGFLAG_WARNING);			\
+} while (0)
+
 #define WARN_ON(x) ({					\
 	int __ret_warn_on = !!(x);			\
 	if (__builtin_constant_p(__ret_warn_on)) {	\
diff --git a/arch/s390/include/asm/param.h b/arch/s390/include/asm/param.h
index 34aaa4603347..c616821bf2ac 100644
--- a/arch/s390/include/asm/param.h
+++ b/arch/s390/include/asm/param.h
@@ -1,30 +1,6 @@
-/*
- *  include/asm-s390/param.h
- *
- *  S390 version
- *
- *  Derived from "include/asm-i386/param.h"
- */
-
 #ifndef _ASMS390_PARAM_H
 #define _ASMS390_PARAM_H
 
-#ifdef __KERNEL__
-# define HZ		CONFIG_HZ	/* Internal kernel timer frequency */
-# define USER_HZ	100		/* .. some user interfaces are in "ticks" */
-# define CLOCKS_PER_SEC	(USER_HZ)	/* like times() */
-#endif
-
-#ifndef HZ
-#define HZ 100
-#endif
-
-#define EXEC_PAGESIZE	4096
-
-#ifndef NOGROUP
-#define NOGROUP		(-1)
-#endif
-
-#define MAXHOSTNAMELEN	64	/* max length of hostname */
+#include <asm-generic/param.h>
 
-#endif
+#endif /* _ASMS390_PARAM_H */
diff --git a/arch/s390/include/asm/sigp.h b/arch/s390/include/asm/sigp.h
index ec403d4304f8..f72d611f7e13 100644
--- a/arch/s390/include/asm/sigp.h
+++ b/arch/s390/include/asm/sigp.h
@@ -15,11 +15,19 @@
 #ifndef __SIGP__
 #define __SIGP__
 
-#include <asm/ptrace.h>
-#include <asm/atomic.h>
+#include <asm/system.h>
 
 /* get real cpu address from logical cpu number */
-extern volatile int __cpu_logical_map[];
+extern int __cpu_logical_map[];
+
+static inline int cpu_logical_map(int cpu)
+{
+#ifdef CONFIG_SMP
+	return __cpu_logical_map[cpu];
+#else
+	return stap();
+#endif
+}
 
 typedef enum
 {
@@ -79,7 +87,7 @@ signal_processor(__u16 cpu_addr, sigp_order_code order_code)
 		"	ipm	%0\n"
 		"	srl	%0,28\n"
 		:	"=d"	(ccode)
-		: "d" (reg1), "d" (__cpu_logical_map[cpu_addr]),
+		: "d" (reg1), "d" (cpu_logical_map(cpu_addr)),
 		  "a" (order_code) : "cc" , "memory");
 	return ccode;
 }
@@ -98,7 +106,7 @@ signal_processor_p(__u32 parameter, __u16 cpu_addr, sigp_order_code order_code)
 		"	ipm	%0\n"
 		"	srl	%0,28\n"
 		: "=d" (ccode)
-		: "d" (reg1), "d" (__cpu_logical_map[cpu_addr]),
+		: "d" (reg1), "d" (cpu_logical_map(cpu_addr)),
 		  "a" (order_code) : "cc" , "memory");
 	return ccode;
 }
@@ -118,7 +126,7 @@ signal_processor_ps(__u32 *statusptr, __u32 parameter, __u16 cpu_addr,
 		"	ipm	%0\n"
 		"	srl	%0,28\n"
 		: "=d" (ccode), "+d" (reg1)
-		: "d" (__cpu_logical_map[cpu_addr]), "a" (order_code)
+		: "d" (cpu_logical_map(cpu_addr)), "a" (order_code)
 		: "cc" , "memory");
 	*statusptr = reg1;
 	return ccode;
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index 07eb61b2fb3a..66069e736842 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -93,13 +93,12 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_SYSCALL_AUDIT	9	/* syscall auditing active */
 #define TIF_SECCOMP		10	/* secure computing */
 #define TIF_SYSCALL_TRACEPOINT	11	/* syscall tracepoint instrumentation */
-#define TIF_USEDFPU		16	/* FPU was used by this task this quantum (SMP) */
-#define TIF_POLLING_NRFLAG	17	/* true if poll_idle() is polling 
+#define TIF_POLLING_NRFLAG	16	/* true if poll_idle() is polling
 					   TIF_NEED_RESCHED */
-#define TIF_31BIT		18	/* 32bit process */ 
-#define TIF_MEMDIE		19
-#define TIF_RESTORE_SIGMASK	20	/* restore signal mask in do_signal() */
-#define TIF_FREEZE		21	/* thread is freezing for suspend */
+#define TIF_31BIT		17	/* 32bit process */
+#define TIF_MEMDIE		18
+#define TIF_RESTORE_SIGMASK	19	/* restore signal mask in do_signal() */
+#define TIF_FREEZE		20	/* thread is freezing for suspend */
 
 #define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
 #define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
@@ -112,7 +111,6 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_SYSCALL_AUDIT	(1<<TIF_SYSCALL_AUDIT)
 #define _TIF_SECCOMP		(1<<TIF_SECCOMP)
 #define _TIF_SYSCALL_TRACEPOINT	(1<<TIF_SYSCALL_TRACEPOINT)
-#define _TIF_USEDFPU		(1<<TIF_USEDFPU)
 #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
 #define _TIF_31BIT		(1<<TIF_31BIT)
 #define _TIF_FREEZE		(1<<TIF_FREEZE)
diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index 192a7203a14f..6e9f049fa823 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -269,8 +269,7 @@
 #define	__NR_pwritev		329
 #define __NR_rt_tgsigqueueinfo	330
 #define __NR_perf_event_open	331
-#define __NR_recvmmsg		332
-#define NR_syscalls 333
+#define NR_syscalls 332
 
 /* 
  * There are some system calls that are not present on 64 bit, some
@@ -377,6 +376,9 @@
 #define __IGNORE_migrate_pages
 #define __IGNORE_move_pages
 
+/* Ignore system calls that are also reachable via sys_socket */
+#define __IGNORE_recvmmsg
+
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR
 #define __ARCH_WANT_SYS_ALARM
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 22c9e557bb22..11c3aba664ea 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -616,44 +616,35 @@ asmlinkage long sys32_fstatat64(unsigned int dfd, char __user *filename,
  */
 
 struct mmap_arg_struct_emu31 {
-	u32	addr;
-	u32	len;
-	u32	prot;
-	u32	flags;
-	u32	fd;
-	u32	offset;
+	compat_ulong_t addr;
+	compat_ulong_t len;
+	compat_ulong_t prot;
+	compat_ulong_t flags;
+	compat_ulong_t fd;
+	compat_ulong_t offset;
 };
 
-asmlinkage unsigned long
-old32_mmap(struct mmap_arg_struct_emu31 __user *arg)
+asmlinkage unsigned long old32_mmap(struct mmap_arg_struct_emu31 __user *arg)
 {
 	struct mmap_arg_struct_emu31 a;
-	int error = -EFAULT;
 
 	if (copy_from_user(&a, arg, sizeof(a)))
-		goto out;
-
-	error = -EINVAL;
+		return -EFAULT;
 	if (a.offset & ~PAGE_MASK)
-		goto out;
-
-	error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd,
-			       a.offset >> PAGE_SHIFT);
-out:
-	return error;
+		return -EINVAL;
+	a.addr = (unsigned long) compat_ptr(a.addr);
+	return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd,
+			      a.offset >> PAGE_SHIFT);
 }
 
-asmlinkage long 
-sys32_mmap2(struct mmap_arg_struct_emu31 __user *arg)
+asmlinkage long sys32_mmap2(struct mmap_arg_struct_emu31 __user *arg)
 {
 	struct mmap_arg_struct_emu31 a;
-	int error = -EFAULT;
 
 	if (copy_from_user(&a, arg, sizeof(a)))
-		goto out;
-	error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
-out:
-	return error;
+		return -EFAULT;
+	a.addr = (unsigned long) compat_ptr(a.addr);
+	return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
 }
 
 asmlinkage long sys32_read(unsigned int fd, char __user * buf, size_t count)
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index faeaccc7d7d9..30de2d0e52bb 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1853,12 +1853,3 @@ sys32_execve_wrapper:
 	llgtr	%r3,%r3			# compat_uptr_t *
 	llgtr	%r4,%r4			# compat_uptr_t *
 	jg	sys32_execve		# branch to system call
-
-	.globl	compat_sys_recvmmsg_wrapper
-compat_sys_recvmmsg_wrapper:
-	lgfr	%r2,%r2			# int
-	llgtr	%r3,%r3			# struct compat_mmsghdr *
-	llgfr	%r4,%r4			# unsigned int
-	llgfr	%r5,%r5			# unsigned int
-	llgtr	%r6,%r6			# struct compat_timespec *
-	jg	compat_sys_recvmmsg
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 5417eb57271a..00b6d1d292f2 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -153,8 +153,6 @@ void exit_thread(void)
 
 void flush_thread(void)
 {
-	clear_used_math();
-	clear_tsk_thread_flag(current, TIF_USEDFPU);
 }
 
 void release_thread(struct task_struct *dead_task)
@@ -217,6 +215,7 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
 	p->thread.mm_segment = get_fs();
 	/* Don't copy debug registers */
 	memset(&p->thread.per_info, 0, sizeof(p->thread.per_info));
+	clear_tsk_thread_flag(p, TIF_SINGLE_STEP);
 	/* Initialize per thread user and system timer values */
 	ti = task_thread_info(p);
 	ti->user_timer = 0;
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 13815d39f7dd..7cf464234419 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -65,6 +65,7 @@ FixPerRegisters(struct task_struct *task)
 {
 	struct pt_regs *regs;
 	per_struct *per_info;
+	per_cr_words cr_words;
 
 	regs = task_pt_regs(task);
 	per_info = (per_struct *) &task->thread.per_info;
@@ -98,6 +99,13 @@ FixPerRegisters(struct task_struct *task)
 		per_info->control_regs.bits.storage_alt_space_ctl = 1;
 	else
 		per_info->control_regs.bits.storage_alt_space_ctl = 0;
+
+	if (task == current) {
+		__ctl_store(cr_words, 9, 11);
+		if (memcmp(&cr_words, &per_info->control_regs.words,
+			   sizeof(cr_words)) != 0)
+			__ctl_load(per_info->control_regs.words, 9, 11);
+	}
 }
 
 void user_enable_single_step(struct task_struct *task)
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 0663287fa1b3..8d8957b38ab3 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -87,7 +87,6 @@ unsigned long elf_hwcap = 0;
 char elf_platform[ELF_PLATFORM_SIZE];
 
 struct mem_chunk __initdata memory_chunk[MEMORY_CHUNKS];
-volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */
 
 int __initdata memory_end_set;
 unsigned long __initdata memory_end;
@@ -124,12 +123,6 @@ void __cpuinit cpu_init(void)
          */
 	get_cpu_id(&S390_lowcore.cpu_id);
 
-        /*
-         * Force FPU initialization:
-         */
-        clear_thread_flag(TIF_USEDFPU);
-        clear_used_math();
-
 	atomic_inc(&init_mm.mm_count);
 	current->active_mm = &init_mm;
 	BUG_ON(current->mm);
@@ -855,7 +848,6 @@ setup_arch(char **cmdline_p)
 	setup_lowcore();
 
         cpu_init();
-	__cpu_logical_map[0] = stap();
 	s390_init_cpu_topology();
 
 	/*
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 6b4fef877f9d..1675c48b9145 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -500,18 +500,10 @@ void do_signal(struct pt_regs *regs)
 				clear_thread_flag(TIF_RESTORE_SIGMASK);
 
 			/*
-			 * If we would have taken a single-step trap
-			 * for a normal instruction, act like we took
-			 * one for the handler setup.
-			 */
-			if (current->thread.per_info.single_step)
-				set_thread_flag(TIF_SINGLE_STEP);
-
-			/*
 			 * Let tracing know that we've done the handler setup.
 			 */
 			tracehook_signal_handler(signr, &info, &ka, regs,
-					 test_thread_flag(TIF_SINGLE_STEP));
+					current->thread.per_info.single_step);
 		}
 		return;
 	}
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 93e52039321b..76a6fdd46c45 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -52,6 +52,9 @@
 #include <asm/cpu.h>
 #include "entry.h"
 
+/* logical cpu to cpu address */
+int __cpu_logical_map[NR_CPUS];
+
 static struct task_struct *current_set[NR_CPUS];
 
 static u8 smp_cpu_type;
@@ -717,6 +720,12 @@ void __init smp_cpus_done(unsigned int max_cpus)
 {
 }
 
+void __init smp_setup_processor_id(void)
+{
+	S390_lowcore.cpu_nr = 0;
+	__cpu_logical_map[0] = stap();
+}
+
 /*
  * the frequency of the profiling timer can be changed
  * by writing a multiplier value into /proc/profile.
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index 4f292c936872..30eca070d426 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -340,4 +340,3 @@ SYSCALL(sys_preadv,sys_preadv,compat_sys_preadv_wrapper)
 SYSCALL(sys_pwritev,sys_pwritev,compat_sys_pwritev_wrapper)
 SYSCALL(sys_rt_tgsigqueueinfo,sys_rt_tgsigqueueinfo,compat_sys_rt_tgsigqueueinfo_wrapper) /* 330 */
 SYSCALL(sys_perf_event_open,sys_perf_event_open,sys_perf_event_open_wrapper)
-SYSCALL(sys_recvmmsg,sys_recvmmsg,compat_sys_recvmmsg_wrapper)
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 3c72c9cf22b6..14ef6f05e432 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -114,7 +114,7 @@ static void add_cpus_to_core(struct tl_cpu *tl_cpu, struct core_info *core)
 
 		rcpu = CPU_BITS - 1 - cpu + tl_cpu->origin;
 		for_each_present_cpu(lcpu) {
-			if (__cpu_logical_map[lcpu] == rcpu) {
+			if (cpu_logical_map(lcpu) == rcpu) {
 				cpu_set(lcpu, core->mask);
 				smp_cpu_polarization[lcpu] = tl_cpu->pp;
 			}
diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c
index 10754a375668..cff327f109a8 100644
--- a/arch/s390/lib/spinlock.c
+++ b/arch/s390/lib/spinlock.c
@@ -34,7 +34,7 @@ static inline void _raw_yield_cpu(int cpu)
 {
 	if (MACHINE_HAS_DIAG9C)
 		asm volatile("diag %0,0,0x9c"
-			     : : "d" (__cpu_logical_map[cpu]));
+			     : : "d" (cpu_logical_map(cpu)));
 	else
 		_raw_yield();
 }
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index f4558ccf02b9..869efbaed3ea 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -40,7 +40,7 @@
 
 static inline unsigned long mmap_base(void)
 {
-	unsigned long gap = current->signal->rlim[RLIMIT_STACK].rlim_cur;
+	unsigned long gap = rlimit(RLIMIT_STACK);
 
 	if (gap < MIN_GAP)
 		gap = MIN_GAP;
@@ -61,7 +61,7 @@ static inline int mmap_is_legacy(void)
 #endif
 	return sysctl_legacy_va_layout ||
 	    (current->personality & ADDR_COMPAT_LAYOUT) ||
-	    current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY;
+	    rlimit(RLIMIT_STACK) == RLIM_INFINITY;
 }
 
 #ifndef CONFIG_64BIT