18 files changed, 141 insertions, 97 deletions

diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index 9b0bc2c9fba0..a0e748da9909 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.27-rc4
-# Thu Aug 21 19:43:29 2008
+# Linux kernel version: 2.6.28-rc6
+# Thu Nov 27 11:00:49 2008
 #
 CONFIG_SCHED_MC=y
 CONFIG_MMU=y
@@ -45,6 +45,7 @@ CONFIG_LOG_BUF_SHIFT=17
 CONFIG_CGROUPS=y
 # CONFIG_CGROUP_DEBUG is not set
 CONFIG_CGROUP_NS=y
+# CONFIG_CGROUP_FREEZER is not set
 # CONFIG_CGROUP_DEVICE is not set
 # CONFIG_CPUSETS is not set
 CONFIG_GROUP_SCHED=y
@@ -84,6 +85,7 @@ CONFIG_SIGNALFD=y
 CONFIG_TIMERFD=y
 CONFIG_EVENTFD=y
 CONFIG_SHMEM=y
+CONFIG_AIO=y
 CONFIG_VM_EVENT_COUNTERS=y
 CONFIG_SLAB=y
 # CONFIG_SLUB is not set
@@ -92,16 +94,10 @@ CONFIG_SLAB=y
 # CONFIG_MARKERS is not set
 CONFIG_HAVE_OPROFILE=y
 CONFIG_KPROBES=y
-# CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is not set
 CONFIG_KRETPROBES=y
-# CONFIG_HAVE_IOREMAP_PROT is not set
 CONFIG_HAVE_KPROBES=y
 CONFIG_HAVE_KRETPROBES=y
-# CONFIG_HAVE_ARCH_TRACEHOOK is not set
-# CONFIG_HAVE_DMA_ATTRS is not set
-# CONFIG_USE_GENERIC_SMP_HELPERS is not set
-# CONFIG_HAVE_CLK is not set
-CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
 # CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
 CONFIG_SLABINFO=y
 CONFIG_RT_MUTEXES=y
@@ -135,6 +131,7 @@ CONFIG_DEFAULT_DEADLINE=y
 CONFIG_DEFAULT_IOSCHED="deadline"
 CONFIG_PREEMPT_NOTIFIERS=y
 CONFIG_CLASSIC_RCU=y
+# CONFIG_FREEZER is not set
 
 #
 # Base setup
@@ -189,7 +186,6 @@ CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_SPARSEMEM_MANUAL=y
 CONFIG_SPARSEMEM=y
 CONFIG_HAVE_MEMORY_PRESENT=y
-# CONFIG_SPARSEMEM_STATIC is not set
 CONFIG_SPARSEMEM_EXTREME=y
 CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
 CONFIG_SPARSEMEM_VMEMMAP=y
@@ -200,9 +196,11 @@ CONFIG_PAGEFLAGS_EXTENDED=y
 CONFIG_SPLIT_PTLOCK_CPUS=4
 CONFIG_MIGRATION=y
 CONFIG_RESOURCES_64BIT=y
+CONFIG_PHYS_ADDR_T_64BIT=y
 CONFIG_ZONE_DMA_FLAG=1
 CONFIG_BOUNCE=y
 CONFIG_VIRT_TO_BUS=y
+CONFIG_UNEVICTABLE_LRU=y
 
 #
 # I/O subsystem configuration
@@ -220,6 +218,8 @@ CONFIG_IPL=y
 CONFIG_IPL_VM=y
 CONFIG_BINFMT_ELF=y
 CONFIG_COMPAT_BINFMT_ELF=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+# CONFIG_HAVE_AOUT is not set
 CONFIG_BINFMT_MISC=m
 CONFIG_FORCE_MAX_ZONEORDER=9
 # CONFIG_PROCESS_DEBUG is not set
@@ -255,7 +255,7 @@ CONFIG_XFRM=y
 # CONFIG_XFRM_STATISTICS is not set
 CONFIG_NET_KEY=y
 # CONFIG_NET_KEY_MIGRATE is not set
-CONFIG_IUCV=m
+CONFIG_IUCV=y
 CONFIG_AFIUCV=m
 CONFIG_INET=y
 CONFIG_IP_MULTICAST=y
@@ -282,7 +282,6 @@ CONFIG_INET_TCP_DIAG=y
 CONFIG_TCP_CONG_CUBIC=y
 CONFIG_DEFAULT_TCP_CONG="cubic"
 # CONFIG_TCP_MD5SIG is not set
-# CONFIG_IP_VS is not set
 CONFIG_IPV6=y
 # CONFIG_IPV6_PRIVACY is not set
 # CONFIG_IPV6_ROUTER_PREF is not set
@@ -331,10 +330,12 @@ CONFIG_NF_CONNTRACK=m
 # CONFIG_NF_CONNTRACK_TFTP is not set
 # CONFIG_NF_CT_NETLINK is not set
 # CONFIG_NETFILTER_XTABLES is not set
+# CONFIG_IP_VS is not set
 
 #
 # IP: Netfilter Configuration
 #
+# CONFIG_NF_DEFRAG_IPV4 is not set
 # CONFIG_NF_CONNTRACK_IPV4 is not set
 # CONFIG_IP_NF_QUEUE is not set
 # CONFIG_IP_NF_IPTABLES is not set
@@ -374,6 +375,7 @@ CONFIG_NET_SCH_CBQ=m
 # CONFIG_NET_SCH_HTB is not set
 # CONFIG_NET_SCH_HFSC is not set
 CONFIG_NET_SCH_PRIO=m
+CONFIG_NET_SCH_MULTIQ=y
 CONFIG_NET_SCH_RED=m
 CONFIG_NET_SCH_SFQ=m
 CONFIG_NET_SCH_TEQL=m
@@ -406,6 +408,7 @@ CONFIG_NET_ACT_POLICE=y
 CONFIG_NET_ACT_NAT=m
 # CONFIG_NET_ACT_PEDIT is not set
 # CONFIG_NET_ACT_SIMP is not set
+# CONFIG_NET_ACT_SKBEDIT is not set
 # CONFIG_NET_CLS_IND is not set
 CONFIG_NET_SCH_FIFO=y
 
@@ -424,6 +427,7 @@ CONFIG_CAN_BCM=m
 CONFIG_CAN_VCAN=m
 # CONFIG_CAN_DEBUG_DEVICES is not set
 # CONFIG_AF_RXRPC is not set
+# CONFIG_PHONET is not set
 # CONFIG_RFKILL is not set
 # CONFIG_NET_9P is not set
 # CONFIG_PCMCIA is not set
@@ -473,7 +477,7 @@ CONFIG_VIRTIO_BLK=m
 CONFIG_MISC_DEVICES=y
 # CONFIG_EEPROM_93CX6 is not set
 # CONFIG_ENCLOSURE_SERVICES is not set
-# CONFIG_HAVE_IDE is not set
+# CONFIG_C2PORT is not set
 
 #
 # SCSI device support
@@ -525,6 +529,7 @@ CONFIG_SCSI_DH_EMC=m
 CONFIG_SCSI_DH_ALUA=m
 CONFIG_MD=y
 CONFIG_BLK_DEV_MD=y
+CONFIG_MD_AUTODETECT=y
 CONFIG_MD_LINEAR=m
 CONFIG_MD_RAID0=m
 CONFIG_MD_RAID1=m
@@ -555,6 +560,9 @@ CONFIG_NET_ETHERNET=y
 # CONFIG_IBM_NEW_EMAC_RGMII is not set
 # CONFIG_IBM_NEW_EMAC_TAH is not set
 # CONFIG_IBM_NEW_EMAC_EMAC4 is not set
+# CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
+# CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
+# CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
 CONFIG_NETDEV_1000=y
 CONFIG_NETDEV_10000=y
 # CONFIG_TR is not set
@@ -632,13 +640,12 @@ CONFIG_S390_VMUR=m
 # CONFIG_THERMAL is not set
 # CONFIG_THERMAL_HWMON is not set
 # CONFIG_WATCHDOG is not set
-
-#
-# Sonics Silicon Backplane
-#
+# CONFIG_REGULATOR is not set
 # CONFIG_MEMSTICK is not set
 # CONFIG_NEW_LEDS is not set
 CONFIG_ACCESSIBILITY=y
+# CONFIG_STAGING is not set
+CONFIG_STAGING_EXCLUDE_BUILD=y
 
 #
 # File systems
@@ -650,13 +657,14 @@ CONFIG_EXT3_FS=y
 CONFIG_EXT3_FS_XATTR=y
 # CONFIG_EXT3_FS_POSIX_ACL is not set
 # CONFIG_EXT3_FS_SECURITY is not set
-# CONFIG_EXT4DEV_FS is not set
+# CONFIG_EXT4_FS is not set
 CONFIG_JBD=y
 # CONFIG_JBD_DEBUG is not set
 CONFIG_FS_MBCACHE=y
 # CONFIG_REISERFS_FS is not set
 # CONFIG_JFS_FS is not set
 CONFIG_FS_POSIX_ACL=y
+CONFIG_FILE_LOCKING=y
 # CONFIG_XFS_FS is not set
 # CONFIG_GFS2_FS is not set
 # CONFIG_OCFS2_FS is not set
@@ -688,6 +696,7 @@ CONFIG_GENERIC_ACL=y
 CONFIG_PROC_FS=y
 CONFIG_PROC_KCORE=y
 CONFIG_PROC_SYSCTL=y
+CONFIG_PROC_PAGE_MONITOR=y
 CONFIG_SYSFS=y
 CONFIG_TMPFS=y
 CONFIG_TMPFS_POSIX_ACL=y
@@ -728,6 +737,7 @@ CONFIG_LOCKD_V4=y
 CONFIG_EXPORTFS=y
 CONFIG_NFS_COMMON=y
 CONFIG_SUNRPC=y
+# CONFIG_SUNRPC_REGISTER_V4 is not set
 # CONFIG_RPCSEC_GSS_KRB5 is not set
 # CONFIG_RPCSEC_GSS_SPKM3 is not set
 # CONFIG_SMB_FS is not set
@@ -800,12 +810,24 @@ CONFIG_DEBUG_MEMORY_INIT=y
 # CONFIG_DEBUG_SG is not set
 # CONFIG_FRAME_POINTER is not set
 # CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_RCU_CPU_STALL_DETECTOR is not set
 # CONFIG_KPROBES_SANITY_TEST is not set
 # CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
 # CONFIG_LKDTM is not set
 # CONFIG_FAULT_INJECTION is not set
 # CONFIG_LATENCYTOP is not set
 CONFIG_SYSCTL_SYSCALL_CHECK=y
+
+#
+# Tracers
+#
+# CONFIG_IRQSOFF_TRACER is not set
+# CONFIG_PREEMPT_TRACER is not set
+# CONFIG_SCHED_TRACER is not set
+# CONFIG_CONTEXT_SWITCH_TRACER is not set
+# CONFIG_BOOT_TRACER is not set
+# CONFIG_DYNAMIC_PRINTK_DEBUG is not set
 CONFIG_SAMPLES=y
 # CONFIG_SAMPLE_KOBJECT is not set
 # CONFIG_SAMPLE_KPROBES is not set
@@ -816,16 +838,19 @@ 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_CRYPTO=y
 
 #
 # Crypto core or helper
 #
+CONFIG_CRYPTO_FIPS=y
 CONFIG_CRYPTO_ALGAPI=y
-CONFIG_CRYPTO_AEAD=m
+CONFIG_CRYPTO_AEAD=y
 CONFIG_CRYPTO_BLKCIPHER=y
-CONFIG_CRYPTO_HASH=m
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_RNG=y
 CONFIG_CRYPTO_MANAGER=y
 CONFIG_CRYPTO_GF128MUL=m
 # CONFIG_CRYPTO_NULL is not set
@@ -877,7 +902,7 @@ CONFIG_CRYPTO_SHA1=m
 #
 # Ciphers
 #
-# CONFIG_CRYPTO_AES is not set
+CONFIG_CRYPTO_AES=m
 # CONFIG_CRYPTO_ANUBIS is not set
 # CONFIG_CRYPTO_ARC4 is not set
 # CONFIG_CRYPTO_BLOWFISH is not set
@@ -898,6 +923,11 @@ CONFIG_CRYPTO_SEED=m
 #
 # CONFIG_CRYPTO_DEFLATE is not set
 CONFIG_CRYPTO_LZO=m
+
+#
+# Random Number Generation
+#
+CONFIG_CRYPTO_ANSI_CPRNG=m
 CONFIG_CRYPTO_HW=y
 CONFIG_ZCRYPT=m
 # CONFIG_ZCRYPT_MONOLITHIC is not set
@@ -912,8 +942,6 @@ CONFIG_S390_PRNG=m
 # Library routines
 #
 CONFIG_BITREVERSE=m
-# CONFIG_GENERIC_FIND_FIRST_BIT is not set
-# CONFIG_GENERIC_FIND_NEXT_BIT is not set
 # CONFIG_CRC_CCITT is not set
 # CONFIG_CRC16 is not set
 CONFIG_CRC_T10DIF=y
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 7fc76133b3e4..5caddd4f7bed 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -679,8 +679,6 @@ static inline void pmd_clear(pmd_t *pmd)
 
 static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
-        if (mm->context.has_pgste)
-                ptep_rcp_copy(ptep);
         pte_val(*ptep) = _PAGE_TYPE_EMPTY;
         if (mm->context.noexec)
                 pte_val(ptep[PTRS_PER_PTE]) = _PAGE_TYPE_EMPTY;
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index a7226f8143fb..5396f9f12263 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -321,8 +321,8 @@ struct pt_regs
         psw_t psw;
         unsigned long gprs[NUM_GPRS];
         unsigned long orig_gpr2;
+        unsigned short svcnr;
         unsigned short ilc;
-        unsigned short trap;
 };
 #endif
 
@@ -486,8 +486,6 @@ struct task_struct;
 extern void user_enable_single_step(struct task_struct *);
 extern void user_disable_single_step(struct task_struct *);
 
-#define __ARCH_WANT_COMPAT_SYS_PTRACE
-
 #define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
 #define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
 #define user_stack_pointer(regs)((regs)->gprs[15])
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
index 6e623971fbb9..2429b87eb28d 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -17,9 +17,7 @@
 static inline long syscall_get_nr(struct task_struct *task,
                                   struct pt_regs *regs)
 {
-        if (regs->trap != __LC_SVC_OLD_PSW)
-                return -1;
-        return regs->gprs[2];
+        return regs->svcnr ? regs->svcnr : -1;
 }
 
 static inline void syscall_rollback(struct task_struct *task,
@@ -52,18 +50,20 @@ static inline void syscall_get_arguments(struct task_struct *task,
                                          unsigned int i, unsigned int n,
                                          unsigned long *args)
 {
+        unsigned long mask = -1UL;
+
         BUG_ON(i + n > 6);
 #ifdef CONFIG_COMPAT
-        if (test_tsk_thread_flag(task, TIF_31BIT)) {
-                if (i + n == 6)
-                        args[--n] = (u32) regs->args[0];
-                while (n-- > 0)
-                        args[n] = (u32) regs->gprs[2 + i + n];
-        }
+        if (test_tsk_thread_flag(task, TIF_31BIT))
+                mask = 0xffffffff;
 #endif
         if (i + n == 6)
-                args[--n] = regs->args[0];
-        memcpy(args, &regs->gprs[2 + i], n * sizeof(args[0]));
+                args[--n] = regs->args[0] & mask;
+        while (n-- > 0)
+                if (i + n > 0)
+                        args[n] = regs->gprs[2 + i + n] & mask;
+        if (i == 0)
+                args[0] = regs->orig_gpr2 & mask;
 }
 
 static inline void syscall_set_arguments(struct task_struct *task,
@@ -74,7 +74,11 @@ static inline void syscall_set_arguments(struct task_struct *task,
         BUG_ON(i + n > 6);
         if (i + n == 6)
                 regs->args[0] = args[--n];
-        memcpy(&regs->gprs[2 + i], args, n * sizeof(args[0]));
+        while (n-- > 0)
+                if (i + n > 0)
+                        regs->gprs[2 + i + n] = args[n];
+        if (i == 0)
+                regs->orig_gpr2 = args[0];
 }
 
 #endif  /* _ASM_SYSCALL_H */
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index fa28ecae636b..3d144e6020c6 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -32,7 +32,7 @@ int main(void)
         DEFINE(__PT_GPRS, offsetof(struct pt_regs, gprs));
         DEFINE(__PT_ORIG_GPR2, offsetof(struct pt_regs, orig_gpr2));
         DEFINE(__PT_ILC, offsetof(struct pt_regs, ilc));
-        DEFINE(__PT_TRAP, offsetof(struct pt_regs, trap));
+        DEFINE(__PT_SVCNR, offsetof(struct pt_regs, svcnr));
         DEFINE(__PT_SIZE, sizeof(struct pt_regs));
         BLANK();
         DEFINE(__SF_BACKCHAIN, offsetof(struct stack_frame, back_chain));
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index c7f02e777af2..b537cb0e9b55 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -340,7 +340,7 @@ static int restore_sigregs32(struct pt_regs *regs,_sigregs32 __user *sregs)
                 return err;
 
         restore_fp_regs(&current->thread.fp_regs);
-        regs->trap = -1;        /* disable syscall checks */
+        regs->svcnr = 0;        /* disable syscall checks */
         return 0;
 }
 
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index ed500ef799b7..198ea18a534d 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -46,7 +46,7 @@ SP_R14	     =	STACK_FRAME_OVERHEAD + __PT_GPRS + 56
 SP_R15       =  STACK_FRAME_OVERHEAD + __PT_GPRS + 60
 SP_ORIG_R2   =  STACK_FRAME_OVERHEAD + __PT_ORIG_GPR2
 SP_ILC       =  STACK_FRAME_OVERHEAD + __PT_ILC
-SP_TRAP      =  STACK_FRAME_OVERHEAD + __PT_TRAP
+SP_SVCNR     =  STACK_FRAME_OVERHEAD + __PT_SVCNR
 SP_SIZE      =  STACK_FRAME_OVERHEAD + __PT_SIZE
 
 _TIF_WORK_SVC = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
@@ -61,22 +61,25 @@ STACK_SIZE  = 1 << STACK_SHIFT
 
 #ifdef CONFIG_TRACE_IRQFLAGS
         .macro  TRACE_IRQS_ON
-        l       %r1,BASED(.Ltrace_irq_on)
+        basr    %r2,%r0
+        l       %r1,BASED(.Ltrace_irq_on_caller)
         basr    %r14,%r1
         .endm
 
         .macro  TRACE_IRQS_OFF
-        l       %r1,BASED(.Ltrace_irq_off)
+        basr    %r2,%r0
+        l       %r1,BASED(.Ltrace_irq_off_caller)
         basr    %r14,%r1
         .endm
 
         .macro  TRACE_IRQS_CHECK
+        basr    %r2,%r0
         tm      SP_PSW(%r15),0x03       # irqs enabled?
         jz      0f
-        l       %r1,BASED(.Ltrace_irq_on)
+        l       %r1,BASED(.Ltrace_irq_on_caller)
         basr    %r14,%r1
         j       1f
-0:      l       %r1,BASED(.Ltrace_irq_off)
+0:      l       %r1,BASED(.Ltrace_irq_off_caller)
         basr    %r14,%r1
 1:
         .endm
@@ -180,11 +183,10 @@ STACK_SIZE  = 1 << STACK_SHIFT
         .macro  CREATE_STACK_FRAME psworg,savearea
         s       %r15,BASED(.Lc_spsize)  # make room for registers & psw
         mvc     SP_PSW(8,%r15),0(%r12)  # move user PSW to stack
-        la      %r12,\psworg
         st      %r2,SP_ORIG_R2(%r15)    # store original content of gpr 2
-        icm     %r12,12,__LC_SVC_ILC
+        icm     %r12,3,__LC_SVC_ILC
         stm     %r0,%r11,SP_R0(%r15)    # store gprs %r0-%r11 to kernel stack
-        st      %r12,SP_ILC(%r15)
+        st      %r12,SP_SVCNR(%r15)
         mvc     SP_R12(16,%r15),\savearea # move %r12-%r15 to stack
         la      %r12,0
         st      %r12,__SF_BACKCHAIN(%r15)       # clear back chain
@@ -261,16 +263,17 @@ sysc_update:
 #endif
 sysc_do_svc:
         l       %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
-        sla     %r7,2                   # *4 and test for svc 0
+        ltr     %r7,%r7                 # test for svc 0
         bnz     BASED(sysc_nr_ok)       # svc number > 0
         # svc 0: system call number in %r1
         cl      %r1,BASED(.Lnr_syscalls)
         bnl     BASED(sysc_nr_ok)
         lr      %r7,%r1           # copy svc number to %r7
-        sla     %r7,2             # *4
 sysc_nr_ok:
         mvc     SP_ARGS(4,%r15),SP_R7(%r15)
 sysc_do_restart:
+        sth     %r7,SP_SVCNR(%r15)
+        sll     %r7,2             # svc number *4
         l       %r8,BASED(.Lsysc_table)
         tm      __TI_flags+3(%r9),(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)
         l       %r8,0(%r7,%r8)    # get system call addr.
@@ -373,7 +376,6 @@ sysc_notify_resume:
 sysc_restart:
         ni      __TI_flags+3(%r9),255-_TIF_RESTART_SVC # clear TIF_RESTART_SVC
         l       %r7,SP_R2(%r15)         # load new svc number
-        sla     %r7,2
         mvc     SP_R2(4,%r15),SP_ORIG_R2(%r15) # restore first argument
         lm      %r2,%r6,SP_R2(%r15)     # load svc arguments
         b       BASED(sysc_do_restart)  # restart svc
@@ -383,7 +385,8 @@ sysc_restart:
 #
 sysc_singlestep:
         ni      __TI_flags+3(%r9),255-_TIF_SINGLE_STEP # clear TIF_SINGLE_STEP
-        mvi     SP_TRAP+1(%r15),0x28    # set trap indication to pgm check
+        mvi     SP_SVCNR(%r15),0xff     # set trap indication to pgm check
+        mvi     SP_SVCNR+1(%r15),0xff
         la      %r2,SP_PTREGS(%r15)     # address of register-save area
         l       %r1,BASED(.Lhandle_per) # load adr. of per handler
         la      %r14,BASED(sysc_return) # load adr. of system return
@@ -404,7 +407,7 @@ sysc_tracesys:
         bnl     BASED(sysc_tracenogo)
         l       %r8,BASED(.Lsysc_table)
         lr      %r7,%r2
-        sll     %r7,2                   # *4
+        sll     %r7,2                   # svc number *4
         l       %r8,0(%r7,%r8)
 sysc_tracego:
         lm      %r3,%r6,SP_R3(%r15)
@@ -583,7 +586,8 @@ pgm_svcper:
 # per was called from kernel, must be kprobes
 #
 kernel_per:
-        mvi     SP_TRAP+1(%r15),0x28    # set trap indication to pgm check
+        mvi     SP_SVCNR(%r15),0xff     # set trap indication to pgm check
+        mvi     SP_SVCNR+1(%r15),0xff
         la      %r2,SP_PTREGS(%r15)     # address of register-save area
         l       %r1,BASED(.Lhandle_per) # load adr. of per handler
         la      %r14,BASED(sysc_restore)# load adr. of system return
@@ -1113,9 +1117,12 @@ cleanup_io_leave_insn:
 .Lschedtail:    .long   schedule_tail
 .Lsysc_table:   .long   sys_call_table
 #ifdef CONFIG_TRACE_IRQFLAGS
-.Ltrace_irq_on: .long   trace_hardirqs_on
-.Ltrace_irq_off:
-                .long   trace_hardirqs_off
+.Ltrace_irq_on_caller:
+                .long   trace_hardirqs_on_caller
+.Ltrace_irq_off_caller:
+                .long   trace_hardirqs_off_caller
+#endif
+#ifdef CONFIG_LOCKDEP
 .Llockdep_sys_exit:
                 .long   lockdep_sys_exit
 #endif
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index d7ce150453f2..89c121ae6339 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -46,7 +46,7 @@ SP_R14	     =	STACK_FRAME_OVERHEAD + __PT_GPRS + 112
 SP_R15       =  STACK_FRAME_OVERHEAD + __PT_GPRS + 120
 SP_ORIG_R2   =  STACK_FRAME_OVERHEAD + __PT_ORIG_GPR2
 SP_ILC       =  STACK_FRAME_OVERHEAD + __PT_ILC
-SP_TRAP      =  STACK_FRAME_OVERHEAD + __PT_TRAP
+SP_SVCNR      = STACK_FRAME_OVERHEAD + __PT_SVCNR
 SP_SIZE      =  STACK_FRAME_OVERHEAD + __PT_SIZE
 
 STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
@@ -61,19 +61,22 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
 
 #ifdef CONFIG_TRACE_IRQFLAGS
         .macro  TRACE_IRQS_ON
-         brasl  %r14,trace_hardirqs_on
+         basr   %r2,%r0
+         brasl  %r14,trace_hardirqs_on_caller
         .endm
 
         .macro  TRACE_IRQS_OFF
-         brasl  %r14,trace_hardirqs_off
+         basr   %r2,%r0
+         brasl  %r14,trace_hardirqs_off_caller
         .endm
 
         .macro TRACE_IRQS_CHECK
+        basr    %r2,%r0
         tm      SP_PSW(%r15),0x03       # irqs enabled?
         jz      0f
-        brasl   %r14,trace_hardirqs_on
+        brasl   %r14,trace_hardirqs_on_caller
         j       1f
-0:      brasl   %r14,trace_hardirqs_off
+0:      brasl   %r14,trace_hardirqs_off_caller
 1:
         .endm
 #else
@@ -168,11 +171,10 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
         .macro  CREATE_STACK_FRAME psworg,savearea
         aghi    %r15,-SP_SIZE           # make room for registers & psw
         mvc     SP_PSW(16,%r15),0(%r12) # move user PSW to stack
-        la      %r12,\psworg
         stg     %r2,SP_ORIG_R2(%r15)    # store original content of gpr 2
-        icm     %r12,12,__LC_SVC_ILC
+        icm     %r12,3,__LC_SVC_ILC
         stmg    %r0,%r11,SP_R0(%r15)    # store gprs %r0-%r11 to kernel stack
-        st      %r12,SP_ILC(%r15)
+        st      %r12,SP_SVCNR(%r15)
         mvc     SP_R12(32,%r15),\savearea # move %r12-%r15 to stack
         la      %r12,0
         stg     %r12,__SF_BACKCHAIN(%r15)
@@ -247,16 +249,17 @@ sysc_update:
 #endif
 sysc_do_svc:
         lg      %r9,__LC_THREAD_INFO    # load pointer to thread_info struct
-        slag    %r7,%r7,2       # *4 and test for svc 0
+        ltgr    %r7,%r7         # test for svc 0
         jnz     sysc_nr_ok
         # svc 0: system call number in %r1
         cl      %r1,BASED(.Lnr_syscalls)
         jnl     sysc_nr_ok
         lgfr    %r7,%r1         # clear high word in r1
-        slag    %r7,%r7,2       # svc 0: system call number in %r1
 sysc_nr_ok:
         mvc     SP_ARGS(8,%r15),SP_R7(%r15)
 sysc_do_restart:
+        sth     %r7,SP_SVCNR(%r15)
+        sllg    %r7,%r7,2       # svc number * 4
         larl    %r10,sys_call_table
 #ifdef CONFIG_COMPAT
         tm      __TI_flags+5(%r9),(_TIF_31BIT>>16)  # running in 31 bit mode ?
@@ -360,7 +363,6 @@ sysc_notify_resume:
 sysc_restart:
         ni      __TI_flags+7(%r9),255-_TIF_RESTART_SVC # clear TIF_RESTART_SVC
         lg      %r7,SP_R2(%r15)         # load new svc number
-        slag    %r7,%r7,2               # *4
         mvc     SP_R2(8,%r15),SP_ORIG_R2(%r15) # restore first argument
         lmg     %r2,%r6,SP_R2(%r15)     # load svc arguments
         j       sysc_do_restart         # restart svc
@@ -369,9 +371,8 @@ sysc_restart:
 # _TIF_SINGLE_STEP is set, call do_single_step
 #
 sysc_singlestep:
-        ni      __TI_flags+7(%r9),255-_TIF_SINGLE_STEP # clear TIF_SINGLE_STEP
-        lhi     %r0,__LC_PGM_OLD_PSW
-        sth     %r0,SP_TRAP(%r15)       # set trap indication to pgm check
+        ni      __TI_flags+7(%r9),255-_TIF_SINGLE_STEP  # clear TIF_SINGLE_STEP
+        xc      SP_SVCNR(2,%r15),SP_SVCNR(%r15)         # clear svc number
         la      %r2,SP_PTREGS(%r15)     # address of register-save area
         larl    %r14,sysc_return        # load adr. of system return
         jg      do_single_step          # branch to do_sigtrap
@@ -389,7 +390,7 @@ sysc_tracesys:
         lghi    %r0,NR_syscalls
         clgr    %r0,%r2
         jnh     sysc_tracenogo
-        slag    %r7,%r2,2               # *4
+        sllg    %r7,%r2,2               # svc number *4
         lgf     %r8,0(%r7,%r10)
 sysc_tracego:
         lmg     %r3,%r6,SP_R3(%r15)
@@ -564,8 +565,7 @@ pgm_svcper:
 # per was called from kernel, must be kprobes
 #
 kernel_per:
-        lhi     %r0,__LC_PGM_OLD_PSW
-        sth     %r0,SP_TRAP(%r15)       # set trap indication to pgm check
+        xc      SP_SVCNR(2,%r15),SP_SVCNR(%r15) # clear svc number
         la      %r2,SP_PTREGS(%r15)     # address of register-save area
         larl    %r14,sysc_restore       # load adr. of system ret, no work
         jg      do_single_step          # branch to do_single_step
diff --git a/arch/s390/kernel/init_task.c b/arch/s390/kernel/init_task.c
index 7ad003969251..e80716843619 100644
--- a/arch/s390/kernel/init_task.c
+++ b/arch/s390/kernel/init_task.c
@@ -26,7 +26,7 @@ EXPORT_SYMBOL(init_mm);
 /*
  * Initial thread structure.
  *
- * We need to make sure that this is 8192-byte aligned due to the
+ * We need to make sure that this is THREAD_SIZE aligned due to the
  * way process stacks are handled. This is done by having a special
  * "init_task" linker map entry..
  */
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 3e2c05cb6a87..04f8c67a6101 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -136,9 +136,12 @@ static void default_idle(void)
                 return;
         }
         trace_hardirqs_on();
+        /* Don't trace preempt off for idle. */
+        stop_critical_timings();
         /* Wait for external, I/O or machine check interrupt. */
         __load_psw_mask(psw_kernel_bits | PSW_MASK_WAIT |
                         PSW_MASK_IO | PSW_MASK_EXT);
+        start_critical_timings();
 }
 
 void cpu_idle(void)
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 1f31be1ecc4b..38ff2bce1203 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -657,7 +657,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
                  * debugger stored an invalid system call number. Skip
                  * the system call and the system call restart handling.
                  */
-                regs->trap = -1;
+                regs->svcnr = 0;
                 ret = -1;
         }
 
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 62122bad1e33..400b040df7fa 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -604,13 +604,13 @@ setup_memory(void)
                 if (memory_chunk[i].type != CHUNK_READ_WRITE)
                         continue;
                 start_chunk = PFN_DOWN(memory_chunk[i].addr);
-                end_chunk = start_chunk + PFN_DOWN(memory_chunk[i].size) - 1;
+                end_chunk = start_chunk + PFN_DOWN(memory_chunk[i].size);
                 end_chunk = min(end_chunk, end_pfn);
                 if (start_chunk >= end_chunk)
                         continue;
                 add_active_range(0, start_chunk, end_chunk);
                 pfn = max(start_chunk, start_pfn);
-                for (; pfn <= end_chunk; pfn++)
+                for (; pfn < end_chunk; pfn++)
                         page_set_storage_key(PFN_PHYS(pfn), PAGE_DEFAULT_KEY);
         }
 
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 4f7fc3059a8e..8e6812a22670 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -160,7 +160,7 @@ static int restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
         current->thread.fp_regs.fpc &= FPC_VALID_MASK;
 
         restore_fp_regs(&current->thread.fp_regs);
-        regs->trap = -1;        /* disable syscall checks */
+        regs->svcnr = 0;        /* disable syscall checks */
         return 0;
 }
 
@@ -445,7 +445,7 @@ void do_signal(struct pt_regs *regs)
                 oldset = &current->blocked;
 
         /* Are we from a system call? */
-        if (regs->trap == __LC_SVC_OLD_PSW) {
+        if (regs->svcnr) {
                 continue_addr = regs->psw.addr;
                 restart_addr = continue_addr - regs->ilc;
                 retval = regs->gprs[2];
@@ -462,7 +462,7 @@ void do_signal(struct pt_regs *regs)
                 case -ERESTART_RESTARTBLOCK:
                         regs->gprs[2] = -EINTR;
                 }
-                regs->trap = -1;        /* Don't deal with this again. */
+                regs->svcnr = 0;        /* Don't deal with this again. */
         }
 
         /* Get signal to deliver.  When running under ptrace, at this point
diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
index 5fdb799062b7..4fe952e557ac 100644
--- a/arch/s390/kernel/sys_s390.c
+++ b/arch/s390/kernel/sys_s390.c
@@ -198,7 +198,7 @@ asmlinkage long s390x_newuname(struct new_utsname __user *name)
 {
         int ret = sys_newuname(name);
 
-        if (current->personality == PER_LINUX32 && !ret) {
+        if (personality(current->personality) == PER_LINUX32 && !ret) {
                 ret = copy_to_user(name->machine, "s390\0\0\0\0", 8);
                 if (ret) ret = -EFAULT;
         }
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index b94e9e3b694a..eccefbbff887 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -59,7 +59,7 @@
 
 static ext_int_info_t ext_int_info_cc;
 static ext_int_info_t ext_int_etr_cc;
-static u64 jiffies_timer_cc;
+static u64 sched_clock_base_cc;
 
 static DEFINE_PER_CPU(struct clock_event_device, comparators);
 
@@ -68,7 +68,7 @@ static DEFINE_PER_CPU(struct clock_event_device, comparators);
  */
 unsigned long long sched_clock(void)
 {
-        return ((get_clock_xt() - jiffies_timer_cc) * 125) >> 9;
+        return ((get_clock_xt() - sched_clock_base_cc) * 125) >> 9;
 }
 
 /*
@@ -229,13 +229,10 @@ static struct clocksource clocksource_tod = {
  */
 void __init time_init(void)
 {
-        u64 init_timer_cc;
-
-        init_timer_cc = reset_tod_clock();
-        jiffies_timer_cc = init_timer_cc - jiffies_64 * CLK_TICKS_PER_JIFFY;
+        sched_clock_base_cc = reset_tod_clock();
 
         /* set xtime */
-        tod_to_timeval(init_timer_cc - TOD_UNIX_EPOCH, &xtime);
+        tod_to_timeval(sched_clock_base_cc - TOD_UNIX_EPOCH, &xtime);
         set_normalized_timespec(&wall_to_monotonic,
                                 -xtime.tv_sec, -xtime.tv_nsec);
 
@@ -289,7 +286,7 @@ static unsigned long long adjust_time(unsigned long long old,
                 delta = -delta;
                 adjust.offset = -ticks * (1000000 / HZ);
         }
-        jiffies_timer_cc += delta;
+        sched_clock_base_cc += delta;
         if (adjust.offset != 0) {
                 printk(KERN_NOTICE "etr: time adjusted by %li micro-seconds\n",
                        adjust.offset);
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 632b13e10053..a947899dcba1 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -65,18 +65,21 @@ static int machine_has_topology_irq;
 static struct timer_list topology_timer;
 static void set_topology_timer(void);
 static DECLARE_WORK(topology_work, topology_work_fn);
+/* topology_lock protects the core linked list */
+static DEFINE_SPINLOCK(topology_lock);
 
 cpumask_t cpu_core_map[NR_CPUS];
 
 cpumask_t cpu_coregroup_map(unsigned int cpu)
 {
         struct core_info *core = &core_info;
+        unsigned long flags;
         cpumask_t mask;
 
         cpus_clear(mask);
         if (!machine_has_topology)
                 return cpu_present_map;
-        mutex_lock(&smp_cpu_state_mutex);
+        spin_lock_irqsave(&topology_lock, flags);
         while (core) {
                 if (cpu_isset(cpu, core->mask)) {
                         mask = core->mask;
@@ -84,7 +87,7 @@ cpumask_t cpu_coregroup_map(unsigned int cpu)
                 }
                 core = core->next;
         }
-        mutex_unlock(&smp_cpu_state_mutex);
+        spin_unlock_irqrestore(&topology_lock, flags);
         if (cpus_empty(mask))
                 mask = cpumask_of_cpu(cpu);
         return mask;
@@ -133,7 +136,7 @@ static void tl_to_cores(struct tl_info *info)
         union tl_entry *tle, *end;
         struct core_info *core = &core_info;
 
-        mutex_lock(&smp_cpu_state_mutex);
+        spin_lock_irq(&topology_lock);
         clear_cores();
         tle = info->tle;
         end = (union tl_entry *)((unsigned long)info + info->length);
@@ -157,7 +160,7 @@ static void tl_to_cores(struct tl_info *info)
                 }
                 tle = next_tle(tle);
         }
-        mutex_unlock(&smp_cpu_state_mutex);
+        spin_unlock_irq(&topology_lock);
 }
 
 static void topology_update_polarization_simple(void)
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 607bd67a18ce..d796d05c9c01 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -2,6 +2,7 @@
  * Written by Martin Schwidefsky (schwidefsky@de.ibm.com)
  */
 
+#include <asm/thread_info.h>
 #include <asm/page.h>
 #include <asm-generic/vmlinux.lds.h>
 
@@ -86,7 +87,7 @@ SECTIONS
         }
         _edata = .;             /* End of data section */
 
-        . = ALIGN(2 * PAGE_SIZE);       /* init_task */
+        . = ALIGN(THREAD_SIZE); /* init_task */
         .data.init_task : {
                 *(.data.init_task)
         }
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index 170392687ce0..2a01b9e02801 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -237,6 +237,11 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
         u8 order_code;
         int rc;
 
+        /* sigp in userspace can exit */
+        if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+                return kvm_s390_inject_program_int(vcpu,
+                                                   PGM_PRIVILEGED_OPERATION);
+
         order_code = disp2;
         if (base2)
                 order_code += vcpu->arch.guest_gprs[base2];