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

Pull more s390 updates from Heiko Carstens:
 "This includes one bpf/jit bug fix where the jit compiler could
  sometimes write generated code out of bounds of the allocated memory
  area.

  The rest of the patches are only cleanups and minor improvements"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/irq: reduce size of external interrupt handler hash array
  s390/compat,uid16: use current_cred()
  s390/ap_bus: use and-mask instead of a cast
  s390/ftrace: avoid pointer arithmetics with function pointers
  s390: make various functions static, add declarations to header files
  s390/compat signal: add couple of __force annotations
  s390/mm: add __releases()/__acquires() annotations to gmap_alloc_table()
  s390: keep Kconfig sorted
  s390/irq: rework irq subclass handling
  s390/irq: use hlists for external interrupt handler array
  s390/dumpstack: convert print_symbol to %pSR
  s390/perf: Remove print_hex_dump_bytes() debug output
  s390: update defconfig
  s390/bpf,jit: fix address randomization

arch/s390/Kconfig

@@ -62,6 +62,7 @@ config S390
 	def_bool y
 	select ARCH_DISCARD_MEMBLOCK
 	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
+	select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
 	select ARCH_INLINE_READ_LOCK
 	select ARCH_INLINE_READ_LOCK_BH
@@ -91,7 +92,6 @@ config S390
 	select ARCH_INLINE_WRITE_UNLOCK_BH
 	select ARCH_INLINE_WRITE_UNLOCK_IRQ
 	select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
-	select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
 	select ARCH_SAVE_PAGE_KEYS if HIBERNATION
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select BUILDTIME_EXTABLE_SORT
@@ -135,15 +135,15 @@ config S390
 	select HAVE_SYSCALL_TRACEPOINTS
 	select HAVE_UID16 if 32BIT
 	select HAVE_VIRT_CPU_ACCOUNTING
-	select VIRT_TO_BUS
 	select INIT_ALL_POSSIBLE
 	select KTIME_SCALAR if 32BIT
 	select MODULES_USE_ELF_RELA
-	select OLD_SIGSUSPEND3
 	select OLD_SIGACTION
+	select OLD_SIGSUSPEND3
 	select SYSCTL_EXCEPTION_TRACE
 	select USE_GENERIC_SMP_HELPERS if SMP
 	select VIRT_CPU_ACCOUNTING
+	select VIRT_TO_BUS
 
 config SCHED_OMIT_FRAME_POINTER
 	def_bool y

arch/s390/defconfig

@@ -1,14 +1,13 @@
-CONFIG_EXPERIMENTAL=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_FHANDLE=y
+CONFIG_AUDIT=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
 CONFIG_TASKSTATS=y
 CONFIG_TASK_DELAY_ACCT=y
 CONFIG_TASK_XACCT=y
 CONFIG_TASK_IO_ACCOUNTING=y
-CONFIG_AUDIT=y
-CONFIG_NO_HZ=y
-CONFIG_HIGH_RES_TIMERS=y
 CONFIG_RCU_FAST_NO_HZ=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
@@ -27,6 +26,7 @@ CONFIG_RD_BZIP2=y
 CONFIG_RD_LZMA=y
 CONFIG_RD_XZ=y
 CONFIG_RD_LZO=y
+CONFIG_RD_LZ4=y
 CONFIG_EXPERT=y
 # CONFIG_COMPAT_BRK is not set
 CONFIG_PROFILING=y
@@ -38,11 +38,13 @@ CONFIG_MODULE_UNLOAD=y
 CONFIG_MODVERSIONS=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_IBM_PARTITION=y
+# CONFIG_EFI_PARTITION is not set
 CONFIG_DEFAULT_DEADLINE=y
 CONFIG_HZ_100=y
 CONFIG_MEMORY_HOTPLUG=y
 CONFIG_MEMORY_HOTREMOVE=y
 CONFIG_KSM=y
+CONFIG_TRANSPARENT_HUGEPAGE=y
 CONFIG_CRASH_DUMP=y
 CONFIG_BINFMT_MISC=m
 CONFIG_HIBERNATION=y
@@ -92,40 +94,49 @@ CONFIG_SCSI_CONSTANTS=y
 CONFIG_SCSI_LOGGING=y
 CONFIG_SCSI_SCAN_ASYNC=y
 CONFIG_ZFCP=y
+CONFIG_SCSI_VIRTIO=y
 CONFIG_NETDEVICES=y
 CONFIG_BONDING=m
 CONFIG_DUMMY=m
 CONFIG_EQUALIZER=m
 CONFIG_TUN=m
 CONFIG_VIRTIO_NET=y
+# CONFIG_INPUT is not set
+# CONFIG_SERIO is not set
 CONFIG_RAW_DRIVER=m
 CONFIG_VIRTIO_BALLOON=y
-CONFIG_EXT2_FS=y
-CONFIG_EXT3_FS=y
-# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
 CONFIG_EXT4_FS=y
 CONFIG_EXT4_FS_POSIX_ACL=y
 CONFIG_EXT4_FS_SECURITY=y
+CONFIG_XFS_FS=y
+CONFIG_XFS_QUOTA=y
+CONFIG_XFS_POSIX_ACL=y
+CONFIG_XFS_RT=y
+CONFIG_BTRFS_FS=y
+CONFIG_BTRFS_FS_POSIX_ACL=y
+CONFIG_FANOTIFY=y
+CONFIG_FUSE_FS=y
 CONFIG_PROC_KCORE=y
 CONFIG_TMPFS=y
 CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_HUGETLBFS=y
 # CONFIG_NETWORK_FILESYSTEMS is not set
+CONFIG_DEBUG_FORCE_WEAK_PER_CPU=y
 CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_PAGEALLOC=y
 CONFIG_TIMER_STATS=y
 CONFIG_PROVE_LOCKING=y
-CONFIG_PROVE_RCU=y
 CONFIG_LOCK_STAT=y
 CONFIG_DEBUG_LOCKDEP=y
 CONFIG_DEBUG_LIST=y
 CONFIG_DEBUG_NOTIFIERS=y
+CONFIG_PROVE_RCU=y
+CONFIG_RCU_CPU_STALL_TIMEOUT=60
 CONFIG_RCU_TRACE=y
-CONFIG_KPROBES_SANITY_TEST=y
-CONFIG_DEBUG_FORCE_WEAK_PER_CPU=y
 CONFIG_LATENCYTOP=y
-CONFIG_DEBUG_PAGEALLOC=y
 CONFIG_BLK_DEV_IO_TRACE=y
+CONFIG_KPROBES_SANITY_TEST=y
 # CONFIG_STRICT_DEVMEM is not set
-CONFIG_CRYPTO_NULL=m
 CONFIG_CRYPTO_CRYPTD=m
 CONFIG_CRYPTO_AUTHENC=m
 CONFIG_CRYPTO_TEST=m
@@ -137,8 +148,10 @@ CONFIG_CRYPTO_ECB=m
 CONFIG_CRYPTO_LRW=m
 CONFIG_CRYPTO_PCBC=m
 CONFIG_CRYPTO_XTS=m
+CONFIG_CRYPTO_CMAC=m
 CONFIG_CRYPTO_XCBC=m
 CONFIG_CRYPTO_VMAC=m
+CONFIG_CRYPTO_CRC32=m
 CONFIG_CRYPTO_MD4=m
 CONFIG_CRYPTO_MICHAEL_MIC=m
 CONFIG_CRYPTO_RMD128=m
@@ -165,6 +178,8 @@ CONFIG_CRYPTO_TWOFISH=m
 CONFIG_CRYPTO_DEFLATE=m
 CONFIG_CRYPTO_ZLIB=m
 CONFIG_CRYPTO_LZO=m
+CONFIG_CRYPTO_LZ4=m
+CONFIG_CRYPTO_LZ4HC=m
 CONFIG_ZCRYPT=m
 CONFIG_CRYPTO_SHA1_S390=m
 CONFIG_CRYPTO_SHA256_S390=m

arch/s390/include/asm/irq.h

@@ -78,10 +78,14 @@ typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long);
 
 int register_external_interrupt(u16 code, ext_int_handler_t handler);
 int unregister_external_interrupt(u16 code, ext_int_handler_t handler);
-void service_subclass_irq_register(void);
+
-void service_subclass_irq_unregister(void);
+enum irq_subclass {
-void measurement_alert_subclass_register(void);
+	IRQ_SUBCLASS_MEASUREMENT_ALERT = 5,
-void measurement_alert_subclass_unregister(void);
+	IRQ_SUBCLASS_SERVICE_SIGNAL = 9,
+};
+
+void irq_subclass_register(enum irq_subclass subclass);
+void irq_subclass_unregister(enum irq_subclass subclass);
 
 #define irq_canonicalize(irq)  (irq)
 

arch/s390/kernel/compat_linux.c

@@ -221,25 +221,26 @@ static int groups16_from_user(struct group_info *group_info, u16 __user *groupli
 
 asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
 {
+	const struct cred *cred = current_cred();
 	int i;
 
 	if (gidsetsize < 0)
 		return -EINVAL;
 
-	get_group_info(current->cred->group_info);
+	get_group_info(cred->group_info);
-	i = current->cred->group_info->ngroups;
+	i = cred->group_info->ngroups;
 	if (gidsetsize) {
 		if (i > gidsetsize) {
 			i = -EINVAL;
 			goto out;
 		}
-		if (groups16_to_user(grouplist, current->cred->group_info)) {
+		if (groups16_to_user(grouplist, cred->group_info)) {
 			i = -EFAULT;
 			goto out;
 		}
 	}
 out:
-	put_group_info(current->cred->group_info);
+	put_group_info(cred->group_info);
 	return i;
 }
 

arch/s390/kernel/compat_signal.c

@@ -332,9 +332,9 @@ static int setup_frame32(int sig, struct k_sigaction *ka,
 	/* Set up to return from userspace.  If provided, use a stub
 	   already in userspace.  */
 	if (ka->sa.sa_flags & SA_RESTORER) {
-		regs->gprs[14] = (__u64) ka->sa.sa_restorer | PSW32_ADDR_AMODE;
+		regs->gprs[14] = (__u64 __force) ka->sa.sa_restorer | PSW32_ADDR_AMODE;
 	} else {
-		regs->gprs[14] = (__u64) frame->retcode | PSW32_ADDR_AMODE;
+		regs->gprs[14] = (__u64 __force) frame->retcode | PSW32_ADDR_AMODE;
 		if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn,
 			       (u16 __force __user *)(frame->retcode)))
 			goto give_sigsegv;
@@ -400,9 +400,9 @@ static int setup_rt_frame32(int sig, struct k_sigaction *ka, siginfo_t *info,
 	/* Set up to return from userspace.  If provided, use a stub
 	   already in userspace.  */
 	if (ka->sa.sa_flags & SA_RESTORER) {
-		regs->gprs[14] = (__u64) ka->sa.sa_restorer | PSW32_ADDR_AMODE;
+		regs->gprs[14] = (__u64 __force) ka->sa.sa_restorer | PSW32_ADDR_AMODE;
 	} else {
-		regs->gprs[14] = (__u64) frame->retcode | PSW32_ADDR_AMODE;
+		regs->gprs[14] = (__u64 __force) frame->retcode | PSW32_ADDR_AMODE;
 		err |= __put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn,
 				  (u16 __force __user *)(frame->retcode));
 	}
@@ -417,7 +417,7 @@ static int setup_rt_frame32(int sig, struct k_sigaction *ka, siginfo_t *info,
 	regs->psw.mask = PSW_MASK_BA |
 		(psw_user_bits & PSW_MASK_ASC) |
 		(regs->psw.mask & ~PSW_MASK_ASC);
-	regs->psw.addr = (__u64) ka->sa.sa_handler;
+	regs->psw.addr = (__u64 __force) ka->sa.sa_handler;
 
 	regs->gprs[2] = map_signal(sig);
 	regs->gprs[3] = (__force __u64) &frame->info;

arch/s390/kernel/dumpstack.c

@@ -40,14 +40,15 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high)
 {
 	struct stack_frame *sf;
 	struct pt_regs *regs;
+	unsigned long addr;
 
 	while (1) {
 		sp = sp & PSW_ADDR_INSN;
 		if (sp < low || sp > high - sizeof(*sf))
 			return sp;
 		sf = (struct stack_frame *) sp;
-		printk("([<%016lx>] ", sf->gprs[8] & PSW_ADDR_INSN);
+		addr = sf->gprs[8] & PSW_ADDR_INSN;
-		print_symbol("%s)\n", sf->gprs[8] & PSW_ADDR_INSN);
+		printk("([<%016lx>] %pSR)\n", addr, (void *)addr);
 		/* Follow the backchain. */
 		while (1) {
 			low = sp;
@@ -57,16 +58,16 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high)
 			if (sp <= low || sp > high - sizeof(*sf))
 				return sp;
 			sf = (struct stack_frame *) sp;
-			printk(" [<%016lx>] ", sf->gprs[8] & PSW_ADDR_INSN);
+			addr = sf->gprs[8] & PSW_ADDR_INSN;
-			print_symbol("%s\n", sf->gprs[8] & PSW_ADDR_INSN);
+			printk(" [<%016lx>] %pSR\n", addr, (void *)addr);
 		}
 		/* Zero backchain detected, check for interrupt frame. */
 		sp = (unsigned long) (sf + 1);
 		if (sp <= low || sp > high - sizeof(*regs))
 			return sp;
 		regs = (struct pt_regs *) sp;
-		printk(" [<%016lx>] ", regs->psw.addr & PSW_ADDR_INSN);
+		addr = regs->psw.addr & PSW_ADDR_INSN;
-		print_symbol("%s\n", regs->psw.addr & PSW_ADDR_INSN);
+		printk(" [<%016lx>] %pSR\n", addr, (void *)addr);
 		low = sp;
 		sp = regs->gprs[15];
 	}
@@ -128,8 +129,7 @@ static void show_last_breaking_event(struct pt_regs *regs)
 {
 #ifdef CONFIG_64BIT
 	printk("Last Breaking-Event-Address:\n");
-	printk(" [<%016lx>] ", regs->args[0] & PSW_ADDR_INSN);
+	printk(" [<%016lx>] %pSR\n", regs->args[0], (void *)regs->args[0]);
-	print_symbol("%s\n", regs->args[0] & PSW_ADDR_INSN);
 #endif
 }
 
@@ -143,10 +143,10 @@ void show_registers(struct pt_regs *regs)
 	char *mode;
 
 	mode = user_mode(regs) ? "User" : "Krnl";
-	printk("%s PSW : %p %p",
+	printk("%s PSW : %p %p (%pSR)\n",
 	       mode, (void *) regs->psw.mask,
+	       (void *) regs->psw.addr,
 	       (void *) regs->psw.addr);
-	print_symbol(" (%s)\n", regs->psw.addr & PSW_ADDR_INSN);
 	printk("           R:%x T:%x IO:%x EX:%x Key:%x M:%x W:%x "
 	       "P:%x AS:%x CC:%x PM:%x", mask_bits(regs, PSW_MASK_PER),
 	       mask_bits(regs, PSW_MASK_DAT), mask_bits(regs, PSW_MASK_IO),

arch/s390/kernel/entry.h

@@ -53,27 +53,21 @@ void handle_signal32(unsigned long sig, struct k_sigaction *ka,
 		    siginfo_t *info, sigset_t *oldset, struct pt_regs *regs);
 void do_notify_resume(struct pt_regs *regs);
 
-struct ext_code;
+void __init init_IRQ(void);
-void do_extint(struct pt_regs *regs);
+void do_IRQ(struct pt_regs *regs, int irq);
 void do_restart(void);
 void __init startup_init(void);
 void die(struct pt_regs *regs, const char *str);
-
+int setup_profiling_timer(unsigned int multiplier);
 void __init time_init(void);
+int pfn_is_nosave(unsigned long);
+void s390_early_resume(void);
+unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip);
 
 struct s390_mmap_arg_struct;
 struct fadvise64_64_args;
 struct old_sigaction;
 
-long sys_mmap2(struct s390_mmap_arg_struct __user  *arg);
-long sys_s390_ipc(uint call, int first, unsigned long second,
-	     unsigned long third, void __user *ptr);
-long sys_s390_personality(unsigned int personality);
-long sys_s390_fadvise64(int fd, u32 offset_high, u32 offset_low,
-		    size_t len, int advice);
-long sys_s390_fadvise64_64(struct fadvise64_64_args __user *args);
-long sys_s390_fallocate(int fd, int mode, loff_t offset, u32 len_high,
-			u32 len_low);
 long sys_sigreturn(void);
 long sys_rt_sigreturn(void);
 long sys32_sigreturn(void);

arch/s390/kernel/ftrace.c

@@ -15,6 +15,7 @@
 #include <linux/kprobes.h>
 #include <trace/syscall.h>
 #include <asm/asm-offsets.h>
+#include "entry.h"
 
 #ifdef CONFIG_DYNAMIC_FTRACE
 
@@ -177,7 +178,7 @@ int ftrace_enable_ftrace_graph_caller(void)
 
 	offset = ((void *) prepare_ftrace_return -
 		  (void *) ftrace_graph_caller) / 2;
-	return probe_kernel_write(ftrace_graph_caller + 2,
+	return probe_kernel_write((void *) ftrace_graph_caller + 2,
 				  &offset, sizeof(offset));
 }
 
@@ -185,7 +186,7 @@ int ftrace_disable_ftrace_graph_caller(void)
 {
 	static unsigned short offset = 0x0002;
 
-	return probe_kernel_write(ftrace_graph_caller + 2,
+	return probe_kernel_write((void *) ftrace_graph_caller + 2,
 				  &offset, sizeof(offset));
 }
 

arch/s390/kernel/irq.c

@@ -196,21 +196,23 @@ asmlinkage void do_softirq(void)
  * ext_int_hash[index] is the list head for all external interrupts that hash
  * to this index.
  */
-static struct list_head ext_int_hash[256];
+static struct hlist_head ext_int_hash[32] ____cacheline_aligned;
 
 struct ext_int_info {
 	ext_int_handler_t handler;
-	u16 code;
+	struct hlist_node entry;
-	struct list_head entry;
 	struct rcu_head rcu;
+	u16 code;
 };
 
 /* ext_int_hash_lock protects the handler lists for external interrupts */
-DEFINE_SPINLOCK(ext_int_hash_lock);
+static DEFINE_SPINLOCK(ext_int_hash_lock);
 
 static inline int ext_hash(u16 code)
 {
-	return (code + (code >> 9)) & 0xff;
+	BUILD_BUG_ON(!is_power_of_2(ARRAY_SIZE(ext_int_hash)));
+
+	return (code + (code >> 9)) & (ARRAY_SIZE(ext_int_hash) - 1);
 }
 
 int register_external_interrupt(u16 code, ext_int_handler_t handler)
@@ -227,7 +229,7 @@ int register_external_interrupt(u16 code, ext_int_handler_t handler)
 	index = ext_hash(code);
 
 	spin_lock_irqsave(&ext_int_hash_lock, flags);
-	list_add_rcu(&p->entry, &ext_int_hash[index]);
+	hlist_add_head_rcu(&p->entry, &ext_int_hash[index]);
 	spin_unlock_irqrestore(&ext_int_hash_lock, flags);
 	return 0;
 }
@@ -240,9 +242,9 @@ int unregister_external_interrupt(u16 code, ext_int_handler_t handler)
 	int index = ext_hash(code);
 
 	spin_lock_irqsave(&ext_int_hash_lock, flags);
-	list_for_each_entry_rcu(p, &ext_int_hash[index], entry) {
+	hlist_for_each_entry_rcu(p, &ext_int_hash[index], entry) {
 		if (p->code == code && p->handler == handler) {
-			list_del_rcu(&p->entry);
+			hlist_del_rcu(&p->entry);
 			kfree_rcu(p, rcu);
 		}
 	}
@@ -264,12 +266,12 @@ static irqreturn_t do_ext_interrupt(int irq, void *dummy)
 
 	index = ext_hash(ext_code.code);
 	rcu_read_lock();
-	list_for_each_entry_rcu(p, &ext_int_hash[index], entry)
+	hlist_for_each_entry_rcu(p, &ext_int_hash[index], entry) {
-		if (likely(p->code == ext_code.code))
+		if (unlikely(p->code != ext_code.code))
-			p->handler(ext_code, regs->int_parm,
+			continue;
-				   regs->int_parm_long);
+		p->handler(ext_code, regs->int_parm, regs->int_parm_long);
+	}
 	rcu_read_unlock();
-
 	return IRQ_HANDLED;
 }
 
@@ -283,55 +285,32 @@ void __init init_ext_interrupts(void)
 	int idx;
 
 	for (idx = 0; idx < ARRAY_SIZE(ext_int_hash); idx++)
-		INIT_LIST_HEAD(&ext_int_hash[idx]);
+		INIT_HLIST_HEAD(&ext_int_hash[idx]);
 
 	irq_set_chip_and_handler(EXT_INTERRUPT,
 				 &dummy_irq_chip, handle_percpu_irq);
 	setup_irq(EXT_INTERRUPT, &external_interrupt);
 }
 
-static DEFINE_SPINLOCK(sc_irq_lock);
+static DEFINE_SPINLOCK(irq_subclass_lock);
-static int sc_irq_refcount;
+static unsigned char irq_subclass_refcount[64];
 
-void service_subclass_irq_register(void)
+void irq_subclass_register(enum irq_subclass subclass)
 {
-	spin_lock(&sc_irq_lock);
+	spin_lock(&irq_subclass_lock);
-	if (!sc_irq_refcount)
+	if (!irq_subclass_refcount[subclass])
-		ctl_set_bit(0, 9);
+		ctl_set_bit(0, subclass);
-	sc_irq_refcount++;
+	irq_subclass_refcount[subclass]++;
-	spin_unlock(&sc_irq_lock);
+	spin_unlock(&irq_subclass_lock);
 }
-EXPORT_SYMBOL(service_subclass_irq_register);
+EXPORT_SYMBOL(irq_subclass_register);
 
-void service_subclass_irq_unregister(void)
+void irq_subclass_unregister(enum irq_subclass subclass)
 {
-	spin_lock(&sc_irq_lock);
+	spin_lock(&irq_subclass_lock);
-	sc_irq_refcount--;
+	irq_subclass_refcount[subclass]--;
-	if (!sc_irq_refcount)
+	if (!irq_subclass_refcount[subclass])
-		ctl_clear_bit(0, 9);
+		ctl_clear_bit(0, subclass);
-	spin_unlock(&sc_irq_lock);
+	spin_unlock(&irq_subclass_lock);
 }
-EXPORT_SYMBOL(service_subclass_irq_unregister);
+EXPORT_SYMBOL(irq_subclass_unregister);
-
-static DEFINE_SPINLOCK(ma_subclass_lock);
-static int ma_subclass_refcount;
-
-void measurement_alert_subclass_register(void)
-{
-	spin_lock(&ma_subclass_lock);
-	if (!ma_subclass_refcount)
-		ctl_set_bit(0, 5);
-	ma_subclass_refcount++;
-	spin_unlock(&ma_subclass_lock);
-}
-EXPORT_SYMBOL(measurement_alert_subclass_register);
-
-void measurement_alert_subclass_unregister(void)
-{
-	spin_lock(&ma_subclass_lock);
-	ma_subclass_refcount--;
-	if (!ma_subclass_refcount)
-		ctl_clear_bit(0, 5);
-	spin_unlock(&ma_subclass_lock);
-}
-EXPORT_SYMBOL(measurement_alert_subclass_unregister);

arch/s390/kernel/machine_kexec.c

@@ -50,7 +50,7 @@ static void add_elf_notes(int cpu)
 /*
  * Initialize CPU ELF notes
  */
-void setup_regs(void)
+static void setup_regs(void)
 {
 	unsigned long sa = S390_lowcore.prefixreg_save_area + SAVE_AREA_BASE;
 	int cpu, this_cpu;

arch/s390/kernel/perf_cpum_cf.c

@@ -274,7 +274,7 @@ static int reserve_pmc_hardware(void)
 	int flags = PMC_INIT;
 
 	on_each_cpu(setup_pmc_cpu, &flags, 1);
-	measurement_alert_subclass_register();
+	irq_subclass_register(IRQ_SUBCLASS_MEASUREMENT_ALERT);
 
 	return 0;
 }
@@ -285,7 +285,7 @@ static void release_pmc_hardware(void)
 	int flags = PMC_RELEASE;
 
 	on_each_cpu(setup_pmc_cpu, &flags, 1);
-	measurement_alert_subclass_unregister();
+	irq_subclass_unregister(IRQ_SUBCLASS_MEASUREMENT_ALERT);
 }
 
 /* Release the PMU if event is the last perf event */

arch/s390/kernel/perf_event.c

@@ -105,13 +105,10 @@ void perf_event_print_debug(void)
 
 	cpu = smp_processor_id();
 	memset(&cf_info, 0, sizeof(cf_info));
-	if (!qctri(&cf_info)) {
+	if (!qctri(&cf_info))
 		pr_info("CPU[%i] CPUM_CF: ver=%u.%u A=%04x E=%04x C=%04x\n",
 			cpu, cf_info.cfvn, cf_info.csvn,
 			cf_info.auth_ctl, cf_info.enable_ctl, cf_info.act_ctl);
-		print_hex_dump_bytes("CPUMF Query: ", DUMP_PREFIX_OFFSET,
-				     &cf_info, sizeof(cf_info));
-	}
 
 	local_irq_restore(flags);
 }

arch/s390/kernel/runtime_instr.c

@@ -139,10 +139,10 @@ static int __init runtime_instr_init(void)
 	if (!runtime_instr_avail())
 		return 0;
 
-	measurement_alert_subclass_register();
+	irq_subclass_register(IRQ_SUBCLASS_MEASUREMENT_ALERT);
 	rc = register_external_interrupt(0x1407, runtime_instr_int_handler);
 	if (rc)
-		measurement_alert_subclass_unregister();
+		irq_subclass_unregister(IRQ_SUBCLASS_MEASUREMENT_ALERT);
 	else
 		pr_info("Runtime instrumentation facility initialized\n");
 	return rc;

arch/s390/kernel/smp.c

@@ -362,7 +362,7 @@ void smp_yield_cpu(int cpu)
  * Send cpus emergency shutdown signal. This gives the cpus the
  * opportunity to complete outstanding interrupts.
  */
-void smp_emergency_stop(cpumask_t *cpumask)
+static void smp_emergency_stop(cpumask_t *cpumask)
 {
 	u64 end;
 	int cpu;

arch/s390/kernel/suspend.c

@@ -13,6 +13,7 @@
 #include <asm/ipl.h>
 #include <asm/cio.h>
 #include <asm/pci.h>
+#include "entry.h"
 
 /*
  * References to section boundaries

arch/s390/mm/fault.c

@@ -673,7 +673,7 @@ static int __init pfault_irq_init(void)
 	rc = pfault_init() == 0 ? 0 : -EOPNOTSUPP;
 	if (rc)
 		goto out_pfault;
-	service_subclass_irq_register();
+	irq_subclass_register(IRQ_SUBCLASS_SERVICE_SIGNAL);
 	hotcpu_notifier(pfault_cpu_notify, 0);
 	return 0;
 

arch/s390/mm/maccess.c

@@ -14,6 +14,7 @@
 #include <linux/gfp.h>
 #include <linux/cpu.h>
 #include <asm/ctl_reg.h>
+#include <asm/io.h>
 
 /*
  * This function writes to kernel memory bypassing DAT and possible

arch/s390/mm/pgtable.c

@@ -246,6 +246,8 @@ EXPORT_SYMBOL_GPL(gmap_disable);
  */
 static int gmap_alloc_table(struct gmap *gmap,
 			    unsigned long *table, unsigned long init)
+	__releases(&gmap->mm->page_table_lock)
+	__acquires(&gmap->mm->page_table_lock)
 {
 	struct page *page;
 	unsigned long *new;
@@ -966,7 +968,7 @@ void page_table_free_rcu(struct mmu_gather *tlb, unsigned long *table)
 	tlb_remove_table(tlb, table);
 }
 
-void __tlb_remove_table(void *_table)
+static void __tlb_remove_table(void *_table)
 {
 	const unsigned long mask = (FRAG_MASK << 4) | FRAG_MASK;
 	void *table = (void *)((unsigned long) _table & ~mask);

arch/s390/net/bpf_jit_comp.c

@@ -805,7 +805,7 @@ static struct bpf_binary_header *bpf_alloc_binary(unsigned int bpfsize,
 		return NULL;
 	memset(header, 0, sz);
 	header->pages = sz / PAGE_SIZE;
-	hole = sz - bpfsize + sizeof(*header);
+	hole = sz - (bpfsize + sizeof(*header));
 	/* Insert random number of illegal instructions before BPF code
 	 * and make sure the first instruction starts at an even address.
 	 */

arch/s390/oprofile/hwsampler.c

@@ -1001,7 +1001,7 @@ int hwsampler_deallocate(void)
 	if (hws_state != HWS_STOPPED)
 		goto deallocate_exit;
 
-	measurement_alert_subclass_unregister();
+	irq_subclass_unregister(IRQ_SUBCLASS_MEASUREMENT_ALERT);
 	deallocate_sdbt();
 
 	hws_state = HWS_DEALLOCATED;
@@ -1115,7 +1115,7 @@ int hwsampler_shutdown(void)
 		mutex_lock(&hws_sem);
 
 		if (hws_state == HWS_STOPPED) {
-			measurement_alert_subclass_unregister();
+			irq_subclass_unregister(IRQ_SUBCLASS_MEASUREMENT_ALERT);
 			deallocate_sdbt();
 		}
 		if (hws_wq) {
@@ -1190,7 +1190,7 @@ int hwsampler_start_all(unsigned long rate)
 	hws_oom = 1;
 	hws_flush_all = 0;
 	/* now let them in, 1407 CPUMF external interrupts */
-	measurement_alert_subclass_register();
+	irq_subclass_register(IRQ_SUBCLASS_MEASUREMENT_ALERT);
 
 	return 0;
 }

drivers/s390/block/dasd_diag.c

@@ -645,7 +645,7 @@ dasd_diag_init(void)
 	}
 	ASCEBC(dasd_diag_discipline.ebcname, 4);
 
-	service_subclass_irq_register();
+	irq_subclass_register(IRQ_SUBCLASS_SERVICE_SIGNAL);
 	register_external_interrupt(0x2603, dasd_ext_handler);
 	dasd_diag_discipline_pointer = &dasd_diag_discipline;
 	return 0;
@@ -655,7 +655,7 @@ static void __exit
 dasd_diag_cleanup(void)
 {
 	unregister_external_interrupt(0x2603, dasd_ext_handler);
-	service_subclass_irq_unregister();
+	irq_subclass_unregister(IRQ_SUBCLASS_SERVICE_SIGNAL);
 	dasd_diag_discipline_pointer = NULL;
 }
 

drivers/s390/char/fs3270.c

@@ -524,20 +524,20 @@ static const struct file_operations fs3270_fops = {
 	.llseek		= no_llseek,
 };
 
-void fs3270_create_cb(int minor)
+static void fs3270_create_cb(int minor)
 {
 	__register_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub", &fs3270_fops);
 	device_create(class3270, NULL, MKDEV(IBM_FS3270_MAJOR, minor),
 		      NULL, "3270/tub%d", minor);
 }
 
-void fs3270_destroy_cb(int minor)
+static void fs3270_destroy_cb(int minor)
 {
 	device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, minor));
 	__unregister_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub");
 }
 
-struct raw3270_notifier fs3270_notifier =
+static struct raw3270_notifier fs3270_notifier =
 {
 	.create = fs3270_create_cb,
 	.destroy = fs3270_destroy_cb,

drivers/s390/char/sclp.c

@@ -910,12 +910,12 @@ sclp_check_interface(void)
 		spin_unlock_irqrestore(&sclp_lock, flags);
 		/* Enable service-signal interruption - needs to happen
 		 * with IRQs enabled. */
-		service_subclass_irq_register();
+		irq_subclass_register(IRQ_SUBCLASS_SERVICE_SIGNAL);
 		/* Wait for signal from interrupt or timeout */
 		sclp_sync_wait();
 		/* Disable service-signal interruption - needs to happen
 		 * with IRQs enabled. */
-		service_subclass_irq_unregister();
+		irq_subclass_unregister(IRQ_SUBCLASS_SERVICE_SIGNAL);
 		spin_lock_irqsave(&sclp_lock, flags);
 		del_timer(&sclp_request_timer);
 		if (sclp_init_req.status == SCLP_REQ_DONE &&
@@ -1131,7 +1131,7 @@ sclp_init(void)
 	spin_unlock_irqrestore(&sclp_lock, flags);
 	/* Enable service-signal external interruption - needs to happen with
 	 * IRQs enabled. */
-	service_subclass_irq_register();
+	irq_subclass_register(IRQ_SUBCLASS_SERVICE_SIGNAL);
 	sclp_init_mask(1);
 	return 0;
 

drivers/s390/char/tty3270.c

@@ -1845,17 +1845,17 @@ static const struct tty_operations tty3270_ops = {
 	.set_termios = tty3270_set_termios
 };
 
-void tty3270_create_cb(int minor)
+static void tty3270_create_cb(int minor)
 {
 	tty_register_device(tty3270_driver, minor - RAW3270_FIRSTMINOR, NULL);
 }
 
-void tty3270_destroy_cb(int minor)
+static void tty3270_destroy_cb(int minor)
 {
 	tty_unregister_device(tty3270_driver, minor - RAW3270_FIRSTMINOR);
 }
 
-struct raw3270_notifier tty3270_notifier =
+static struct raw3270_notifier tty3270_notifier =
 {
 	.create = tty3270_create_cb,
 	.destroy = tty3270_destroy_cb,

drivers/s390/crypto/ap_bus.c

@@ -413,7 +413,7 @@ __ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length,
 	register unsigned long reg2 asm ("2") = (unsigned long) msg;
 	register unsigned long reg3 asm ("3") = (unsigned long) length;
 	register unsigned long reg4 asm ("4") = (unsigned int) (psmid >> 32);
-	register unsigned long reg5 asm ("5") = (unsigned int) psmid;
+	register unsigned long reg5 asm ("5") = psmid & 0xffffffff;
 
 	if (special == 1)
 		reg0 |= 0x400000UL;

drivers/s390/kvm/kvm_virtio.c

@@ -472,7 +472,7 @@ static int __init kvm_devices_init(void)
 
 	INIT_WORK(&hotplug_work, hotplug_devices);
 
-	service_subclass_irq_register();
+	irq_subclass_register(IRQ_SUBCLASS_SERVICE_SIGNAL);
 	register_external_interrupt(0x2603, kvm_extint_handler);
 
 	scan_devices();