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
  ...

13 files changed, 9 insertions, 160 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index be34ef41b7c7..26a51dc4278d 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1237,7 +1237,6 @@ EXPORT_SYMBOL(dasd_smalloc_request);
  */
 void dasd_kfree_request(struct dasd_ccw_req *cqr, struct dasd_device *device)
 {
-#ifdef CONFIG_64BIT
 	struct ccw1 *ccw;
 
 	/* Clear any idals used for the request. */
@@ -1245,7 +1244,6 @@ void dasd_kfree_request(struct dasd_ccw_req *cqr, struct dasd_device *device)
 	do {
 		clear_normalized_cda(ccw);
 	} while (ccw++->flags & (CCW_FLAG_CC | CCW_FLAG_DC));
-#endif
 	kfree(cqr->cpaddr);
 	kfree(cqr->data);
 	kfree(cqr);
@@ -2967,8 +2965,6 @@ enum blk_eh_timer_return dasd_times_out(struct request *req)
  */
 static int dasd_alloc_queue(struct dasd_block *block)
 {
-	int rc;
-
 	block->request_queue = blk_init_queue(do_dasd_request,
 					       &block->request_queue_lock);
 	if (block->request_queue == NULL)
@@ -2976,14 +2972,7 @@ static int dasd_alloc_queue(struct dasd_block *block)
 
 	block->request_queue->queuedata = block;
 
-	elevator_exit(block->request_queue->elevator);
-	block->request_queue->elevator = NULL;
-	mutex_lock(&block->request_queue->sysfs_lock);
-	rc = elevator_init(block->request_queue, "deadline");
-	if (rc)
-		blk_cleanup_queue(block->request_queue);
-	mutex_unlock(&block->request_queue->sysfs_lock);
-	return rc;
+	return 0;
 }
 
 /*
diff --git a/drivers/s390/block/dasd_diag.h b/drivers/s390/block/dasd_diag.h
index a803cc731586..e84a5468d810 100644
--- a/drivers/s390/block/dasd_diag.h
+++ b/drivers/s390/block/dasd_diag.h
@@ -38,8 +38,6 @@ struct dasd_diag_characteristics {
 	u8 rdev_features;
 } __attribute__ ((packed, aligned(4)));
 
-
-#ifdef CONFIG_64BIT
 #define DASD_DIAG_FLAGA_DEFAULT		DASD_DIAG_FLAGA_FORMAT_64BIT
 
 typedef u64 blocknum_t;
@@ -80,43 +78,3 @@ struct dasd_diag_rw_io {
 	struct dasd_diag_bio *bio_list;
 	u8  spare4[8];
 } __attribute__ ((packed, aligned(8)));
-#else /* CONFIG_64BIT */
-#define DASD_DIAG_FLAGA_DEFAULT		0x0
-
-typedef u32 blocknum_t;
-typedef s32 sblocknum_t;
-
-struct dasd_diag_bio {
-	u8 type;
-	u8 status;
-	u16 spare1;
-	blocknum_t block_number;
-	u32 alet;
-	void *buffer;
-} __attribute__ ((packed, aligned(8)));
-
-struct dasd_diag_init_io {
-	u16 dev_nr;
-	u8 flaga;
-	u8 spare1[21];
-	u32 block_size;
-	blocknum_t offset;
-	sblocknum_t start_block;
-	blocknum_t end_block;
-	u8 spare2[24];
-} __attribute__ ((packed, aligned(8)));
-
-struct dasd_diag_rw_io {
-	u16 dev_nr;
-	u8 flaga;
-	u8 spare1[21];
-	u8 key;
-	u8 flags;
-	u8 spare2[2];
-	u32 block_count;
-	u32 alet;
-	struct dasd_diag_bio *bio_list;
-	u32 interrupt_params;
-	u8 spare3[20];
-} __attribute__ ((packed, aligned(8)));
-#endif /* CONFIG_64BIT */
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index d47f5b99623a..49b48a887c66 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -1633,7 +1633,6 @@ static void dasd_eckd_kick_validate_server(struct dasd_device *device)
 
 static u32 get_fcx_max_data(struct dasd_device *device)
 {
-#if defined(CONFIG_64BIT)
 	int tpm, mdc;
 	int fcx_in_css, fcx_in_gneq, fcx_in_features;
 	struct dasd_eckd_private *private;
@@ -1657,9 +1656,6 @@ static u32 get_fcx_max_data(struct dasd_device *device)
 		return 0;
 	} else
 		return mdc * FCX_MAX_DATA_FACTOR;
-#else
-	return 0;
-#endif
 }
 
 /*
@@ -2615,10 +2611,8 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single(
 			/* Eckd can only do full blocks. */
 			return ERR_PTR(-EINVAL);
 		count += bv.bv_len >> (block->s2b_shift + 9);
-#if defined(CONFIG_64BIT)
 		if (idal_is_needed (page_address(bv.bv_page), bv.bv_len))
 			cidaw += bv.bv_len >> (block->s2b_shift + 9);
-#endif
 	}
 	/* Paranoia. */
 	if (count != last_rec - first_rec + 1)
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 2c8e68bf9a1c..c9262e78938b 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -287,10 +287,8 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev,
 			/* Fba can only do full blocks. */
 			return ERR_PTR(-EINVAL);
 		count += bv.bv_len >> (block->s2b_shift + 9);
-#if defined(CONFIG_64BIT)
 		if (idal_is_needed (page_address(bv.bv_page), bv.bv_len))
 			cidaw += bv.bv_len / blksize;
-#endif
 	}
 	/* Paranoia. */
 	if (count != last_rec - first_rec + 1)
diff --git a/drivers/s390/char/Kconfig b/drivers/s390/char/Kconfig
index a5c6f7e157aa..eaca3e006301 100644
--- a/drivers/s390/char/Kconfig
+++ b/drivers/s390/char/Kconfig
@@ -115,7 +115,7 @@ config SCLP_ASYNC_ID
 config HMC_DRV
 	def_tristate m
 	prompt "Support for file transfers from HMC drive CD/DVD-ROM"
-	depends on S390 && 64BIT
+	depends on S390
 	select CRC16
 	help
 	  This option enables support for file transfers from a Hardware
diff --git a/drivers/s390/char/sclp_sdias.c b/drivers/s390/char/sclp_sdias.c
index 561a0414b352..eb7cb076c001 100644
--- a/drivers/s390/char/sclp_sdias.c
+++ b/drivers/s390/char/sclp_sdias.c
@@ -178,11 +178,7 @@ int sclp_sdias_copy(void *dest, int start_blk, int nr_blks)
 	sccb.evbuf.event_qual = SDIAS_EQ_STORE_DATA;
 	sccb.evbuf.data_id = SDIAS_DI_FCP_DUMP;
 	sccb.evbuf.event_id = 4712;
-#ifdef CONFIG_64BIT
 	sccb.evbuf.asa_size = SDIAS_ASA_SIZE_64;
-#else
-	sccb.evbuf.asa_size = SDIAS_ASA_SIZE_32;
-#endif
 	sccb.evbuf.event_status = 0;
 	sccb.evbuf.blk_cnt = nr_blks;
 	sccb.evbuf.asa = (unsigned long)dest;
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index efcf48481c5f..a68fcfd1d48c 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -212,11 +212,7 @@ static struct zcore_header zcore_header = {
 	.dump_level	= 0,
 	.page_size	= PAGE_SIZE,
 	.mem_start	= 0,
-#ifdef CONFIG_64BIT
 	.build_arch	= DUMP_ARCH_S390X,
-#else
-	.build_arch	= DUMP_ARCH_S390,
-#endif
 };
 
 /*
@@ -516,23 +512,6 @@ static const struct file_operations zcore_hsa_fops = {
 	.llseek		= no_llseek,
 };
 
-#ifdef CONFIG_32BIT
-
-static void __init set_lc_mask(struct save_area *map)
-{
-	memset(&map->ext_save, 0xff, sizeof(map->ext_save));
-	memset(&map->timer, 0xff, sizeof(map->timer));
-	memset(&map->clk_cmp, 0xff, sizeof(map->clk_cmp));
-	memset(&map->psw, 0xff, sizeof(map->psw));
-	memset(&map->pref_reg, 0xff, sizeof(map->pref_reg));
-	memset(&map->acc_regs, 0xff, sizeof(map->acc_regs));
-	memset(&map->fp_regs, 0xff, sizeof(map->fp_regs));
-	memset(&map->gp_regs, 0xff, sizeof(map->gp_regs));
-	memset(&map->ctrl_regs, 0xff, sizeof(map->ctrl_regs));
-}
-
-#else /* CONFIG_32BIT */
-
 static void __init set_lc_mask(struct save_area *map)
 {
 	memset(&map->fp_regs, 0xff, sizeof(map->fp_regs));
@@ -547,8 +526,6 @@ static void __init set_lc_mask(struct save_area *map)
 	memset(&map->ctrl_regs, 0xff, sizeof(map->ctrl_regs));
 }
 
-#endif /* CONFIG_32BIT */
-
 /*
  * Initialize dump globals for a given architecture
  */
@@ -688,21 +665,12 @@ static int __init zcore_init(void)
 	if (rc)
 		goto fail;
 
-#ifdef CONFIG_64BIT
 	if (arch == ARCH_S390) {
 		pr_alert("The 64-bit dump tool cannot be used for a "
 			 "32-bit system\n");
 		rc = -EINVAL;
 		goto fail;
 	}
-#else /* CONFIG_64BIT */
-	if (arch == ARCH_S390X) {
-		pr_alert("The 32-bit dump tool cannot be used for a "
-			 "64-bit system\n");
-		rc = -EINVAL;
-		goto fail;
-	}
-#endif /* CONFIG_64BIT */
 
 	rc = get_mem_info(&mem_size, &mem_end);
 	if (rc)
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 3578105989a0..07fc5d9e7f10 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -143,13 +143,11 @@ cio_start_key (struct subchannel *sch,	/* subchannel structure */
 	orb->cmd.spnd = priv->options.suspend;
 	orb->cmd.ssic = priv->options.suspend && priv->options.inter;
 	orb->cmd.lpm = (lpm != 0) ? lpm : sch->lpm;
-#ifdef CONFIG_64BIT
 	/*
 	 * for 64 bit we always support 64 bit IDAWs with 4k page size only
 	 */
 	orb->cmd.c64 = 1;
 	orb->cmd.i2k = 0;
-#endif
 	orb->cmd.key = key >> 4;
 	/* issue "Start Subchannel" */
 	orb->cmd.cpa = (__u32) __pa(cpa);
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index a563e4c00590..7e70f9298cc1 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -84,7 +84,6 @@ enum qdio_irq_states {
 #define QDIO_SIGA_WRITEQ	0x04
 #define QDIO_SIGA_QEBSM_FLAG	0x80
 
-#ifdef CONFIG_64BIT
 static inline int do_sqbs(u64 token, unsigned char state, int queue,
 			  int *start, int *count)
 {
@@ -122,12 +121,6 @@ static inline int do_eqbs(u64 token, unsigned char *state, int queue,
 
 	return (_ccq >> 32) & 0xff;
 }
-#else
-static inline int do_sqbs(u64 token, unsigned char state, int queue,
-			  int *start, int *count) { return 0; }
-static inline int do_eqbs(u64 token, unsigned char *state, int queue,
-			  int *start, int *count, int ack) { return 0; }
-#endif /* CONFIG_64BIT */
 
 struct qdio_irq;
 
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index f76bff68d1de..48b3866a9ded 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -91,10 +91,7 @@ EXPORT_SYMBOL_GPL(qdio_reset_buffers);
  */
 static inline int qebsm_possible(void)
 {
-#ifdef CONFIG_64BIT
 	return css_general_characteristics.qebsm;
-#endif
-	return 0;
 }
 
 /*
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 3d7f19fb9a4e..f0b9871a4bbd 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -165,7 +165,7 @@ static inline int ap_instructions_available(void)
  */
 static int ap_interrupts_available(void)
 {
-	return test_facility(2) && test_facility(65);
+	return test_facility(65);
 }
 
 /**
@@ -174,12 +174,10 @@ static int ap_interrupts_available(void)
  *
  * Returns 1 if AP configuration information is available.
  */
-#ifdef CONFIG_64BIT
 static int ap_configuration_available(void)
 {
-	return test_facility(2) && test_facility(12);
+	return test_facility(12);
 }
-#endif
 
 /**
  * ap_test_queue(): Test adjunct processor queue.
@@ -239,7 +237,6 @@ static inline struct ap_queue_status ap_reset_queue(ap_qid_t qid)
 	return reg1;
 }
 
-#ifdef CONFIG_64BIT
 /**
  * ap_queue_interruption_control(): Enable interruption for a specific AP.
  * @qid: The AP queue number
@@ -261,9 +258,7 @@ ap_queue_interruption_control(ap_qid_t qid, void *ind)
 		: "cc" );
 	return reg1_out;
 }
-#endif
 
-#ifdef CONFIG_64BIT
 static inline struct ap_queue_status
 __ap_query_functions(ap_qid_t qid, unsigned int *functions)
 {
@@ -282,9 +277,7 @@ __ap_query_functions(ap_qid_t qid, unsigned int *functions)
 	*functions = (unsigned int)(reg2 >> 32);
 	return reg1;
 }
-#endif
 
-#ifdef CONFIG_64BIT
 static inline int __ap_query_configuration(struct ap_config_info *config)
 {
 	register unsigned long reg0 asm ("0") = 0x04000000UL;
@@ -302,7 +295,6 @@ static inline int __ap_query_configuration(struct ap_config_info *config)
 
 	return reg1;
 }
-#endif
 
 /**
  * ap_query_functions(): Query supported functions.
@@ -317,7 +309,6 @@ static inline int __ap_query_configuration(struct ap_config_info *config)
  */
 static int ap_query_functions(ap_qid_t qid, unsigned int *functions)
 {
-#ifdef CONFIG_64BIT
 	struct ap_queue_status status;
 	int i;
 	status = __ap_query_functions(qid, functions);
@@ -348,9 +339,6 @@ static int ap_query_functions(ap_qid_t qid, unsigned int *functions)
 		}
 	}
 	return -EBUSY;
-#else
-	return -EINVAL;
-#endif
 }
 
 /**
@@ -364,7 +352,6 @@ static int ap_query_functions(ap_qid_t qid, unsigned int *functions)
  */
 static int ap_queue_enable_interruption(ap_qid_t qid, void *ind)
 {
-#ifdef CONFIG_64BIT
 	struct ap_queue_status status;
 	int t_depth, t_device_type, rc, i;
 
@@ -404,9 +391,6 @@ static int ap_queue_enable_interruption(ap_qid_t qid, void *ind)
 		}
 	}
 	return rc;
-#else
-	return -EINVAL;
-#endif
 }
 
 /**
@@ -1238,7 +1222,6 @@ static struct bus_attribute *const ap_bus_attrs[] = {
  */
 static void ap_query_configuration(void)
 {
-#ifdef CONFIG_64BIT
 	if (ap_configuration_available()) {
 		if (!ap_configuration)
 			ap_configuration =
@@ -1248,9 +1231,6 @@ static void ap_query_configuration(void)
 			__ap_query_configuration(ap_configuration);
 	} else
 		ap_configuration = NULL;
-#else
-	ap_configuration = NULL;
-#endif
 }
 
 /**
diff --git a/drivers/s390/net/ctcm_mpc.c b/drivers/s390/net/ctcm_mpc.c
index 2dbc77b5137b..edf16bfba8ee 100644
--- a/drivers/s390/net/ctcm_mpc.c
+++ b/drivers/s390/net/ctcm_mpc.c
@@ -130,11 +130,7 @@ void ctcmpc_dumpit(char *buf, int len)
 	__u32	ct, sw, rm, dup;
 	char	*ptr, *rptr;
 	char	tbuf[82], tdup[82];
-	#ifdef CONFIG_64BIT
 	char	addr[22];
-	#else
-	char	addr[12];
-	#endif
 	char	boff[12];
 	char	bhex[82], duphex[82];
 	char	basc[40];
@@ -147,11 +143,7 @@ void ctcmpc_dumpit(char *buf, int len)
 
 	for (ct = 0; ct < len; ct++, ptr++, rptr++) {
 		if (sw == 0) {
-			#ifdef CONFIG_64BIT
 			sprintf(addr, "%16.16llx", (__u64)rptr);
-			#else
-			sprintf(addr, "%8.8X", (__u32)rptr);
-			#endif
 
 			sprintf(boff, "%4.4X", (__u32)ct);
 			bhex[0] = '\0';
@@ -162,11 +154,7 @@ void ctcmpc_dumpit(char *buf, int len)
 		if (sw == 8)
 			strcat(bhex, "	");
 
-		#if CONFIG_64BIT
 		sprintf(tbuf, "%2.2llX", (__u64)*ptr);
-		#else
-		sprintf(tbuf, "%2.2X", (__u32)*ptr);
-		#endif
 
 		tbuf[2] = '\0';
 		strcat(bhex, tbuf);
diff --git a/drivers/watchdog/diag288_wdt.c b/drivers/watchdog/diag288_wdt.c
index 429494b6c822..a9a5210143ae 100644
--- a/drivers/watchdog/diag288_wdt.c
+++ b/drivers/watchdog/diag288_wdt.c
@@ -125,9 +125,7 @@ static int wdt_start(struct watchdog_device *dev)
 		ret = __diag288_vm(func, dev->timeout, ebc_cmd, len);
 		WARN_ON(ret != 0);
 		kfree(ebc_cmd);
-	}
-
-	if (MACHINE_IS_LPAR) {
+	} else {
 		ret = __diag288_lpar(WDT_FUNC_INIT,
 				     dev->timeout, LPARWDT_RESTART);
 	}
@@ -136,7 +134,6 @@ static int wdt_start(struct watchdog_device *dev)
 		pr_err("The watchdog cannot be activated\n");
 		return ret;
 	}
-	pr_info("The watchdog was activated\n");
 	return 0;
 }
 
@@ -145,7 +142,6 @@ static int wdt_stop(struct watchdog_device *dev)
 	int ret;
 
 	ret = __diag288(WDT_FUNC_CANCEL, 0, 0, 0);
-	pr_info("The watchdog was deactivated\n");
 	return ret;
 }
 
@@ -177,10 +173,9 @@ static int wdt_ping(struct watchdog_device *dev)
 		ret = __diag288_vm(func, dev->timeout, ebc_cmd, len);
 		WARN_ON(ret != 0);
 		kfree(ebc_cmd);
-	}
-
-	if (MACHINE_IS_LPAR)
+	} else {
 		ret = __diag288_lpar(WDT_FUNC_CHANGE, dev->timeout, 0);
+	}
 
 	if (ret)
 		pr_err("The watchdog timer cannot be started or reset\n");
@@ -202,7 +197,7 @@ static struct watchdog_ops wdt_ops = {
 };
 
 static struct watchdog_info wdt_info = {
-	.options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
 	.firmware_version = 0,
 	.identity = "z Watchdog",
 };
@@ -273,21 +268,16 @@ static int __init diag288_init(void)
 	watchdog_set_nowayout(&wdt_dev, nowayout_info);
 
 	if (MACHINE_IS_VM) {
-		pr_info("The watchdog device driver detected a z/VM environment\n");
 		if (__diag288_vm(WDT_FUNC_INIT, 15,
 				 ebc_begin, sizeof(ebc_begin)) != 0) {
 			pr_err("The watchdog cannot be initialized\n");
 			return -EINVAL;
 		}
-	} else if (MACHINE_IS_LPAR) {
-		pr_info("The watchdog device driver detected an LPAR environment\n");
+	} else {
 		if (__diag288_lpar(WDT_FUNC_INIT, 30, LPARWDT_RESTART)) {
 			pr_err("The watchdog cannot be initialized\n");
 			return -EINVAL;
 		}
-	} else {
-		pr_err("Linux runs in an environment that does not support the diag288 watchdog\n");
-		return -ENODEV;
 	}
 
 	if (__diag288_lpar(WDT_FUNC_CANCEL, 0, 0)) {