Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6

* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [S390] Update default configuration.
  [S390] use generic sys_ptrace
  [S390] Remove self ptrace IEEE_IP hack.
  [S390] Convert to SPARSEMEM & SPARSEMEM_VMEMMAP
  [S390] System z large page support.
  [S390] Convert machine feature detection code to C.
  [S390] vmemmap: use clear_table to initialise page tables.
  [S390] Move stfl to system.h and delete duplicated version.
  [S390] uaccess_mvcos: #ifdef config dependent code.
  [S390] cpu topology: Fix possible deadlock.
  [S390] Add topology_core_siblings to topology.h
  [S390] cio: Make isc handling more robust.
  [S390] remove -traditional
  [S390] Automatically detect added cpus.
  [S390] smp: Fix locking order.
  [S390] Add missing ifndef/define to include/asm-s390/sysinfo.h.
  [S390] Move show_regs to traps.c.
  [S390] cio: Use strict_strtoul() for attributes.

11 files changed, 73 insertions, 44 deletions

diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c
index b8f35bc..9e784d5 100644
--- a/drivers/s390/char/sclp_config.c
+++ b/drivers/s390/char/sclp_config.c
@@ -10,6 +10,7 @@
 #include <linux/cpu.h>
 #include <linux/sysdev.h>
 #include <linux/workqueue.h>
+#include <asm/smp.h>
 #include "sclp.h"
 
 #define TAG	"sclp_config: "
@@ -19,9 +20,11 @@ struct conf_mgm_data {
 	u8 ev_qualifier;
 } __attribute__((packed));
 
+#define EV_QUAL_CPU_CHANGE	1
 #define EV_QUAL_CAP_CHANGE	3
 
 static struct work_struct sclp_cpu_capability_work;
+static struct work_struct sclp_cpu_change_work;
 
 static void sclp_cpu_capability_notify(struct work_struct *work)
 {
@@ -37,13 +40,24 @@ static void sclp_cpu_capability_notify(struct work_struct *work)
 	put_online_cpus();
 }
 
+static void sclp_cpu_change_notify(struct work_struct *work)
+{
+	smp_rescan_cpus();
+}
+
 static void sclp_conf_receiver_fn(struct evbuf_header *evbuf)
 {
 	struct conf_mgm_data *cdata;
 
 	cdata = (struct conf_mgm_data *)(evbuf + 1);
-	if (cdata->ev_qualifier == EV_QUAL_CAP_CHANGE)
+	switch (cdata->ev_qualifier) {
+	case EV_QUAL_CPU_CHANGE:
+		schedule_work(&sclp_cpu_change_work);
+		break;
+	case EV_QUAL_CAP_CHANGE:
 		schedule_work(&sclp_cpu_capability_work);
+		break;
+	}
 }
 
 static struct sclp_register sclp_conf_register =
@@ -57,6 +71,7 @@ static int __init sclp_conf_init(void)
 	int rc;
 
 	INIT_WORK(&sclp_cpu_capability_work, sclp_cpu_capability_notify);
+	INIT_WORK(&sclp_cpu_change_work, sclp_cpu_change_notify);
 
 	rc = sclp_register(&sclp_conf_register);
 	if (rc) {
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index fe1ad17..85b2e51 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -318,7 +318,7 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const
 {
 	struct ccwgroup_device *gdev;
 	struct ccwgroup_driver *gdrv;
-	unsigned int value;
+	unsigned long value;
 	int ret;
 
 	gdev = to_ccwgroupdev(dev);
@@ -329,7 +329,9 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const
 	if (!try_module_get(gdrv->owner))
 		return -EINVAL;
 
-	value = simple_strtoul(buf, NULL, 0);
+	ret = strict_strtoul(buf, 0, &value);
+	if (ret)
+		goto out;
 	ret = count;
 	if (value == 1)
 		ccwgroup_set_online(gdev);
@@ -337,6 +339,7 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const
 		ccwgroup_set_offline(gdev);
 	else
 		ret = -EINVAL;
+out:
 	module_put(gdrv->owner);
 	return ret;
 }
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 23ffcc4..08a5781 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -407,8 +407,7 @@ cio_modify (struct subchannel *sch)
 /*
  * Enable subchannel.
  */
-int cio_enable_subchannel(struct subchannel *sch, unsigned int isc,
-			  u32 intparm)
+int cio_enable_subchannel(struct subchannel *sch, u32 intparm)
 {
 	char dbf_txt[15];
 	int ccode;
@@ -426,7 +425,7 @@ int cio_enable_subchannel(struct subchannel *sch, unsigned int isc,
 
 	for (retry = 5, ret = 0; retry > 0; retry--) {
 		sch->schib.pmcw.ena = 1;
-		sch->schib.pmcw.isc = isc;
+		sch->schib.pmcw.isc = sch->isc;
 		sch->schib.pmcw.intparm = intparm;
 		ret = cio_modify(sch);
 		if (ret == -ENODEV)
@@ -600,6 +599,7 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
 	else
 		sch->opm = chp_get_sch_opm(sch);
 	sch->lpm = sch->schib.pmcw.pam & sch->opm;
+	sch->isc = 3;
 
 	CIO_DEBUG(KERN_INFO, 0,
 		  "Detected device %04x on subchannel 0.%x.%04X"
@@ -610,13 +610,11 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
 
 	/*
 	 * We now have to initially ...
-	 *  ... set "interruption subclass"
 	 *  ... enable "concurrent sense"
 	 *  ... enable "multipath mode" if more than one
 	 *	  CHPID is available. This is done regardless
 	 *	  whether multiple paths are available for us.
 	 */
-	sch->schib.pmcw.isc = 3;	/* could be smth. else */
 	sch->schib.pmcw.csense = 1;	/* concurrent sense */
 	sch->schib.pmcw.ena = 0;
 	if ((sch->lpm & (sch->lpm - 1)) != 0)
@@ -812,6 +810,7 @@ cio_probe_console(void)
 	 * enable console I/O-interrupt subclass 7
 	 */
 	ctl_set_bit(6, 24);
+	console_subchannel.isc = 7;
 	console_subchannel.schib.pmcw.isc = 7;
 	console_subchannel.schib.pmcw.intparm =
 		(u32)(addr_t)&console_subchannel;
diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h
index 08f2235..3c75412 100644
--- a/drivers/s390/cio/cio.h
+++ b/drivers/s390/cio/cio.h
@@ -74,6 +74,7 @@ struct subchannel {
 	__u8 lpm;		/* logical path mask */
 	__u8 opm;               /* operational path mask */
 	struct schib schib;	/* subchannel information block */
+	int isc; /* desired interruption subclass */
 	struct chsc_ssd_info ssd_info;	/* subchannel description */
 	struct device dev;	/* entry in device tree */
 	struct css_driver *driver;
@@ -85,7 +86,7 @@ struct subchannel {
 #define to_subchannel(n) container_of(n, struct subchannel, dev)
 
 extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id);
-extern int cio_enable_subchannel(struct subchannel *, unsigned int, u32);
+extern int cio_enable_subchannel(struct subchannel *, u32);
 extern int cio_disable_subchannel (struct subchannel *);
 extern int cio_cancel (struct subchannel *);
 extern int cio_clear (struct subchannel *);
diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c
index f4c132a..2808b68 100644
--- a/drivers/s390/cio/cmf.c
+++ b/drivers/s390/cio/cmf.c
@@ -1219,16 +1219,21 @@ static ssize_t cmb_enable_store(struct device *dev,
 {
 	struct ccw_device *cdev;
 	int ret;
+	unsigned long val;
+
+	ret = strict_strtoul(buf, 16, &val);
+	if (ret)
+		return ret;
 
 	cdev = to_ccwdev(dev);
 
-	switch (buf[0]) {
-	case '0':
+	switch (val) {
+	case 0:
 		ret = disable_cmf(cdev);
 		if (ret)
 			dev_info(&cdev->dev, "disable_cmf failed (%d)\n", ret);
 		break;
-	case '1':
+	case 1:
 		ret = enable_cmf(cdev);
 		if (ret && ret != -EBUSY)
 			dev_info(&cdev->dev, "enable_cmf failed (%d)\n", ret);
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index c1afab5..595e327 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -705,13 +705,17 @@ css_cm_enable_store(struct device *dev, struct device_attribute *attr,
 {
 	struct channel_subsystem *css = to_css(dev);
 	int ret;
+	unsigned long val;
 
+	ret = strict_strtoul(buf, 16, &val);
+	if (ret)
+		return ret;
 	mutex_lock(&css->mutex);
-	switch (buf[0]) {
-	case '0':
+	switch (val) {
+	case 0:
 		ret = css->cm_enabled ? chsc_secm(css, 0) : 0;
 		break;
-	case '1':
+	case 1:
 		ret = css->cm_enabled ? 0 : chsc_secm(css, 1);
 		break;
 	default:
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index e0c7adb..abfd601 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -512,8 +512,8 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr,
 			     const char *buf, size_t count)
 {
 	struct ccw_device *cdev = to_ccwdev(dev);
-	int i, force;
-	char *tmp;
+	int force, ret;
+	unsigned long i;
 
 	if (atomic_cmpxchg(&cdev->private->onoff, 0, 1) != 0)
 		return -EAGAIN;
@@ -525,25 +525,30 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr,
 	if (!strncmp(buf, "force\n", count)) {
 		force = 1;
 		i = 1;
+		ret = 0;
 	} else {
 		force = 0;
-		i = simple_strtoul(buf, &tmp, 16);
+		ret = strict_strtoul(buf, 16, &i);
 	}
-
+	if (ret)
+		goto out;
 	switch (i) {
 	case 0:
 		online_store_handle_offline(cdev);
+		ret = count;
 		break;
 	case 1:
 		online_store_handle_online(cdev, force);
+		ret = count;
 		break;
 	default:
-		count = -EINVAL;
+		ret = -EINVAL;
 	}
+out:
 	if (cdev->drv)
 		module_put(cdev->drv->owner);
 	atomic_set(&cdev->private->onoff, 0);
-	return count;
+	return ret;
 }
 
 static ssize_t
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 4b92c84..99403b0 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -555,8 +555,7 @@ ccw_device_recognition(struct ccw_device *cdev)
 	    (cdev->private->state != DEV_STATE_BOXED))
 		return -EINVAL;
 	sch = to_subchannel(cdev->dev.parent);
-	ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc,
-				    (u32)(addr_t)sch);
+	ret = cio_enable_subchannel(sch, (u32)(addr_t)sch);
 	if (ret != 0)
 		/* Couldn't enable the subchannel for i/o. Sick device. */
 		return ret;
@@ -667,8 +666,7 @@ ccw_device_online(struct ccw_device *cdev)
 	sch = to_subchannel(cdev->dev.parent);
 	if (css_init_done && !get_device(&cdev->dev))
 		return -ENODEV;
-	ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc,
-				    (u32)(addr_t)sch);
+	ret = cio_enable_subchannel(sch, (u32)(addr_t)sch);
 	if (ret != 0) {
 		/* Couldn't enable the subchannel for i/o. Sick device. */
 		if (ret == -ENODEV)
@@ -1048,8 +1046,7 @@ ccw_device_start_id(struct ccw_device *cdev, enum dev_event dev_event)
 	struct subchannel *sch;
 
 	sch = to_subchannel(cdev->dev.parent);
-	if (cio_enable_subchannel(sch, sch->schib.pmcw.isc,
-				  (u32)(addr_t)sch) != 0)
+	if (cio_enable_subchannel(sch, (u32)(addr_t)sch) != 0)
 		/* Couldn't enable the subchannel for i/o. Sick device. */
 		return;
 
@@ -1082,7 +1079,6 @@ device_trigger_reprobe(struct subchannel *sch)
 	 */
 	sch->lpm = sch->schib.pmcw.pam & sch->opm;
 	/* Re-set some bits in the pmcw that were lost. */
-	sch->schib.pmcw.isc = 3;
 	sch->schib.pmcw.csense = 1;
 	sch->schib.pmcw.ena = 0;
 	if ((sch->lpm & (sch->lpm - 1)) != 0)
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index a1718a0..f308ad5 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -508,7 +508,7 @@ ccw_device_stlck(struct ccw_device *cdev)
 		return -ENOMEM;
 	}
 	spin_lock_irqsave(sch->lock, flags);
-	ret = cio_enable_subchannel(sch, 3, (u32)(addr_t)sch);
+	ret = cio_enable_subchannel(sch, (u32)(addr_t)sch);
 	if (ret)
 		goto out_unlock;
 	/*
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index 43876e2..445cf36 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -3663,11 +3663,11 @@ qdio_performance_stats_show(struct bus_type *bus, char *buf)
 static ssize_t
 qdio_performance_stats_store(struct bus_type *bus, const char *buf, size_t count)
 {
-	char *tmp;
-	int i;
+	unsigned long i;
+	int ret;
 
-	i = simple_strtoul(buf, &tmp, 16);
-	if ((i == 0) || (i == 1)) {
+	ret = strict_strtoul(buf, 16, &i);
+	if (!ret && ((i == 0) || (i == 1))) {
 		if (i == qdio_performance_stats)
 			return count;
 		qdio_performance_stats = i;
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index bbef376..47a7e62 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -17,6 +17,7 @@
 #include <linux/virtio_config.h>
 #include <linux/interrupt.h>
 #include <linux/virtio_ring.h>
+#include <linux/pfn.h>
 #include <asm/io.h>
 #include <asm/kvm_para.h>
 #include <asm/kvm_virtio.h>
@@ -180,11 +181,10 @@ static struct virtqueue *kvm_find_vq(struct virtio_device *vdev,
 
 	config = kvm_vq_config(kdev->desc)+index;
 
-	if (add_shared_memory(config->address,
-				vring_size(config->num, PAGE_SIZE))) {
-		err = -ENOMEM;
+	err = vmem_add_mapping(config->address,
+			       vring_size(config->num, PAGE_SIZE));
+	if (err)
 		goto out;
-	}
 
 	vq = vring_new_virtqueue(config->num, vdev, (void *) config->address,
 				 kvm_notify, callback);
@@ -202,8 +202,8 @@ static struct virtqueue *kvm_find_vq(struct virtio_device *vdev,
 	vq->priv = config;
 	return vq;
 unmap:
-	remove_shared_memory(config->address, vring_size(config->num,
-			     PAGE_SIZE));
+	vmem_remove_mapping(config->address,
+			    vring_size(config->num, PAGE_SIZE));
 out:
 	return ERR_PTR(err);
 }
@@ -213,8 +213,8 @@ static void kvm_del_vq(struct virtqueue *vq)
 	struct kvm_vqconfig *config = vq->priv;
 
 	vring_del_virtqueue(vq);
-	remove_shared_memory(config->address,
-			     vring_size(config->num, PAGE_SIZE));
+	vmem_remove_mapping(config->address,
+			    vring_size(config->num, PAGE_SIZE));
 }
 
 /*
@@ -318,12 +318,13 @@ static int __init kvm_devices_init(void)
 		return rc;
 	}
 
-	if (add_shared_memory((max_pfn) << PAGE_SHIFT, PAGE_SIZE)) {
+	rc = vmem_add_mapping(PFN_PHYS(max_pfn), PAGE_SIZE);
+	if (rc) {
 		device_unregister(&kvm_root);
-		return -ENOMEM;
+		return rc;
 	}
 
-	kvm_devices  = (void *) (max_pfn << PAGE_SHIFT);
+	kvm_devices = (void *) PFN_PHYS(max_pfn);
 
 	ctl_set_bit(0, 9);
 	register_external_interrupt(0x2603, kvm_extint_handler);