From c2bb4e5d497823437f0a11d342024ccdc6ff5b0d Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:08 +0200
Subject: [S390] Remove last P390 trace.

Seems like I forgot this hunk...

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 include/asm-s390/setup.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h
index 4ba14e463e83..2bd9faeb3919 100644
--- a/include/asm-s390/setup.h
+++ b/include/asm-s390/setup.h
@@ -65,7 +65,6 @@ extern unsigned long machine_flags;
 
 #define MACHINE_FLAG_VM		(1UL << 0)
 #define MACHINE_FLAG_IEEE	(1UL << 1)
-#define MACHINE_FLAG_P390	(1UL << 2)
 #define MACHINE_FLAG_CSP	(1UL << 3)
 #define MACHINE_FLAG_MVPG	(1UL << 4)
 #define MACHINE_FLAG_DIAG44	(1UL << 5)
-- 
cgit v1.2.3-59-g8ed1b


From 4abb08c24b5fa7b6ad0807c07077f0f216f6788b Mon Sep 17 00:00:00 2001
From: Stefan Weinhuber <wein@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:09 +0200
Subject: [S390] dasd: Add support for enhanced VM UID

When z/VM provides two virtual devices (minidisks) that reside on the
same real device, both will receive the configuration data from the
real device and thus get the same uid. To fix this problem, z/VM
provides an additional configuration data record that allows to
distinguish between minidisks.
z/VM APAR VM64273 needs be installed so this fix has an effect.

Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 drivers/s390/block/dasd_alias.c  |   4 +-
 drivers/s390/block/dasd_devmap.c |  16 +++-
 drivers/s390/block/dasd_eckd.c   | 147 +++++++++++++++++++++++--------
 drivers/s390/block/dasd_eckd.h   | 184 +++++++++++++--------------------------
 drivers/s390/block/dasd_int.h    |   1 +
 5 files changed, 189 insertions(+), 163 deletions(-)

diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c
index 2d8df0b30538..20676cdef4a5 100644
--- a/drivers/s390/block/dasd_alias.c
+++ b/drivers/s390/block/dasd_alias.c
@@ -91,7 +91,8 @@ static struct alias_pav_group *_find_group(struct alias_lcu *lcu,
 	else
 		search_unit_addr = uid->base_unit_addr;
 	list_for_each_entry(pos, &lcu->grouplist, group) {
-		if (pos->uid.base_unit_addr == search_unit_addr)
+		if (pos->uid.base_unit_addr == search_unit_addr &&
+		    !strncmp(pos->uid.vduit, uid->vduit, sizeof(uid->vduit)))
 			return pos;
 	};
 	return NULL;
@@ -332,6 +333,7 @@ static int _add_device_to_lcu(struct alias_lcu *lcu,
 			group->uid.base_unit_addr = uid->real_unit_addr;
 		else
 			group->uid.base_unit_addr = uid->base_unit_addr;
+		memcpy(group->uid.vduit, uid->vduit, sizeof(uid->vduit));
 		INIT_LIST_HEAD(&group->group);
 		INIT_LIST_HEAD(&group->baselist);
 		INIT_LIST_HEAD(&group->aliaslist);
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index d774e79476fe..cd3335c1c307 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -913,7 +913,8 @@ dasd_vendor_show(struct device *dev, struct device_attribute *attr, char *buf)
 static DEVICE_ATTR(vendor, 0444, dasd_vendor_show, NULL);
 
 #define UID_STRLEN ( /* vendor */ 3 + 1 + /* serial    */ 14 + 1 +\
-		     /* SSID   */ 4 + 1 + /* unit addr */ 2 + 1)
+		     /* SSID   */ 4 + 1 + /* unit addr */ 2 + 1 +\
+		     /* vduit */ 32 + 1)
 
 static ssize_t
 dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf)
@@ -945,8 +946,17 @@ dasd_uid_show(struct device *dev, struct device_attribute *attr, char *buf)
 		sprintf(ua_string, "%02x", uid->real_unit_addr);
 		break;
 	}
-	snprintf(uid_string, sizeof(uid_string), "%s.%s.%04x.%s",
-		 uid->vendor, uid->serial, uid->ssid, ua_string);
+	if (strlen(uid->vduit) > 0)
+		snprintf(uid_string, sizeof(uid_string),
+			 "%s.%s.%04x.%s.%s",
+			 uid->vendor, uid->serial,
+			 uid->ssid, ua_string,
+			 uid->vduit);
+	else
+		snprintf(uid_string, sizeof(uid_string),
+			 "%s.%s.%04x.%s",
+			 uid->vendor, uid->serial,
+			 uid->ssid, ua_string);
 	spin_unlock(&dasd_devmap_lock);
 	return snprintf(buf, PAGE_SIZE, "%s\n", uid_string);
 }
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 3590fdb5b2fd..773b3fe275b2 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -313,8 +313,8 @@ static int prefix(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata, int trk,
 	memset(pfxdata, 0, sizeof(*pfxdata));
 	/* prefix data */
 	pfxdata->format = 0;
-	pfxdata->base_address = basepriv->conf_data.ned1.unit_addr;
-	pfxdata->base_lss = basepriv->conf_data.ned1.ID;
+	pfxdata->base_address = basepriv->ned->unit_addr;
+	pfxdata->base_lss = basepriv->ned->ID;
 	pfxdata->validity.define_extend = 1;
 
 	/* private uid is kept up to date, conf_data may be outdated */
@@ -536,36 +536,40 @@ dasd_eckd_cdl_reclen(int recid)
 /*
  * Generate device unique id that specifies the physical device.
  */
-static int
-dasd_eckd_generate_uid(struct dasd_device *device, struct dasd_uid *uid)
+static int dasd_eckd_generate_uid(struct dasd_device *device,
+				  struct dasd_uid *uid)
 {
 	struct dasd_eckd_private *private;
-	struct dasd_eckd_confdata *confdata;
+	int count;
 
 	private = (struct dasd_eckd_private *) device->private;
 	if (!private)
 		return -ENODEV;
-	confdata = &private->conf_data;
-	if (!confdata)
+	if (!private->ned || !private->gneq)
 		return -ENODEV;
 
 	memset(uid, 0, sizeof(struct dasd_uid));
-	memcpy(uid->vendor, confdata->ned1.HDA_manufacturer,
+	memcpy(uid->vendor, private->ned->HDA_manufacturer,
 	       sizeof(uid->vendor) - 1);
 	EBCASC(uid->vendor, sizeof(uid->vendor) - 1);
-	memcpy(uid->serial, confdata->ned1.HDA_location,
+	memcpy(uid->serial, private->ned->HDA_location,
 	       sizeof(uid->serial) - 1);
 	EBCASC(uid->serial, sizeof(uid->serial) - 1);
-	uid->ssid = confdata->neq.subsystemID;
-	uid->real_unit_addr = confdata->ned1.unit_addr;
-	if (confdata->ned2.sneq.flags == 0x40 &&
-	    confdata->ned2.sneq.format == 0x0001) {
-		uid->type = confdata->ned2.sneq.sua_flags;
+	uid->ssid = private->gneq->subsystemID;
+	uid->real_unit_addr = private->ned->unit_addr;;
+	if (private->sneq) {
+		uid->type = private->sneq->sua_flags;
 		if (uid->type == UA_BASE_PAV_ALIAS)
-			uid->base_unit_addr = confdata->ned2.sneq.base_unit_addr;
+			uid->base_unit_addr = private->sneq->base_unit_addr;
 	} else {
 		uid->type = UA_BASE_DEVICE;
 	}
+	if (private->vdsneq) {
+		for (count = 0; count < 16; count++) {
+			sprintf(uid->vduit+2*count, "%02x",
+				private->vdsneq->uit[count]);
+		}
+	}
 	return 0;
 }
 
@@ -623,6 +627,15 @@ static int dasd_eckd_read_conf_lpm(struct dasd_device *device,
 		ret = -ENOMEM;
 		goto out_error;
 	}
+
+	/*
+	 * buffer has to start with EBCDIC "V1.0" to show
+	 * support for virtual device SNEQ
+	 */
+	rcd_buf[0] = 0xE5;
+	rcd_buf[1] = 0xF1;
+	rcd_buf[2] = 0x4B;
+	rcd_buf[3] = 0xF0;
 	cqr = dasd_eckd_build_rcd_lpm(device, rcd_buf, ciw, lpm);
 	if (IS_ERR(cqr)) {
 		ret =  PTR_ERR(cqr);
@@ -646,8 +659,62 @@ out_error:
 	return ret;
 }
 
-static int
-dasd_eckd_read_conf(struct dasd_device *device)
+static int dasd_eckd_identify_conf_parts(struct dasd_eckd_private *private)
+{
+
+	struct dasd_sneq *sneq;
+	int i, count;
+
+	private->ned = NULL;
+	private->sneq = NULL;
+	private->vdsneq = NULL;
+	private->gneq = NULL;
+	count = private->conf_len / sizeof(struct dasd_sneq);
+	sneq = (struct dasd_sneq *)private->conf_data;
+	for (i = 0; i < count; ++i) {
+		if (sneq->flags.identifier == 1 && sneq->format == 1)
+			private->sneq = sneq;
+		else if (sneq->flags.identifier == 1 && sneq->format == 4)
+			private->vdsneq = (struct vd_sneq *)sneq;
+		else if (sneq->flags.identifier == 2)
+			private->gneq = (struct dasd_gneq *)sneq;
+		else if (sneq->flags.identifier == 3 && sneq->res1 == 1)
+			private->ned = (struct dasd_ned *)sneq;
+		sneq++;
+	}
+	if (!private->ned || !private->gneq) {
+		private->ned = NULL;
+		private->sneq = NULL;
+		private->vdsneq = NULL;
+		private->gneq = NULL;
+		return -EINVAL;
+	}
+	return 0;
+
+};
+
+static unsigned char dasd_eckd_path_access(void *conf_data, int conf_len)
+{
+	struct dasd_gneq *gneq;
+	int i, count, found;
+
+	count = conf_len / sizeof(*gneq);
+	gneq = (struct dasd_gneq *)conf_data;
+	found = 0;
+	for (i = 0; i < count; ++i) {
+		if (gneq->flags.identifier == 2) {
+			found = 1;
+			break;
+		}
+		gneq++;
+	}
+	if (found)
+		return ((char *)gneq)[18] & 0x07;
+	else
+		return 0;
+}
+
+static int dasd_eckd_read_conf(struct dasd_device *device)
 {
 	void *conf_data;
 	int conf_len, conf_data_saved;
@@ -661,7 +728,6 @@ dasd_eckd_read_conf(struct dasd_device *device)
 	path_data->opm = ccw_device_get_path_mask(device->cdev);
 	lpm = 0x80;
 	conf_data_saved = 0;
-
 	/* get configuration data per operational path */
 	for (lpm = 0x80; lpm; lpm>>= 1) {
 		if (lpm & path_data->opm){
@@ -678,22 +744,20 @@ dasd_eckd_read_conf(struct dasd_device *device)
 					"data retrieved");
 				continue;	/* no error */
 			}
-			if (conf_len != sizeof(struct dasd_eckd_confdata)) {
-				MESSAGE(KERN_WARNING,
-					"sizes of configuration data mismatch"
-					"%d (read) vs %ld (expected)",
-					conf_len,
-					sizeof(struct dasd_eckd_confdata));
-				kfree(conf_data);
-				continue;	/* no error */
-			}
 			/* save first valid configuration data */
-			if (!conf_data_saved){
-				memcpy(&private->conf_data, conf_data,
-				       sizeof(struct dasd_eckd_confdata));
+			if (!conf_data_saved) {
+				kfree(private->conf_data);
+				private->conf_data = conf_data;
+				private->conf_len = conf_len;
+				if (dasd_eckd_identify_conf_parts(private)) {
+					private->conf_data = NULL;
+					private->conf_len = 0;
+					kfree(conf_data);
+					continue;
+				}
 				conf_data_saved++;
 			}
-			switch (((char *)conf_data)[242] & 0x07){
+			switch (dasd_eckd_path_access(conf_data, conf_len)) {
 			case 0x02:
 				path_data->npm |= lpm;
 				break;
@@ -701,7 +765,8 @@ dasd_eckd_read_conf(struct dasd_device *device)
 				path_data->ppm |= lpm;
 				break;
 			}
-			kfree(conf_data);
+			if (conf_data != private->conf_data)
+				kfree(conf_data);
 		}
 	}
 	return 0;
@@ -952,6 +1017,7 @@ out_err2:
 	dasd_free_block(device->block);
 	device->block = NULL;
 out_err1:
+	kfree(private->conf_data);
 	kfree(device->private);
 	device->private = NULL;
 	return rc;
@@ -959,7 +1025,17 @@ out_err1:
 
 static void dasd_eckd_uncheck_device(struct dasd_device *device)
 {
+	struct dasd_eckd_private *private;
+
+	private = (struct dasd_eckd_private *) device->private;
 	dasd_alias_disconnect_device_from_lcu(device);
+	private->ned = NULL;
+	private->sneq = NULL;
+	private->vdsneq = NULL;
+	private->gneq = NULL;
+	private->conf_len = 0;
+	kfree(private->conf_data);
+	private->conf_data = NULL;
 }
 
 static struct dasd_ccw_req *
@@ -1746,9 +1822,10 @@ dasd_eckd_fill_info(struct dasd_device * device,
 	info->characteristics_size = sizeof(struct dasd_eckd_characteristics);
 	memcpy(info->characteristics, &private->rdc_data,
 	       sizeof(struct dasd_eckd_characteristics));
-	info->confdata_size = sizeof(struct dasd_eckd_confdata);
-	memcpy(info->configuration_data, &private->conf_data,
-	       sizeof(struct dasd_eckd_confdata));
+	info->confdata_size = min((unsigned long)private->conf_len,
+				  sizeof(info->configuration_data));
+	memcpy(info->configuration_data, private->conf_data,
+	       info->confdata_size);
 	return 0;
 }
 
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index fc2509c939bc..4bf0aa5112c1 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -231,133 +231,62 @@ struct dasd_eckd_characteristics {
 	__u8 reserved3[10];
 } __attribute__ ((packed));
 
-struct dasd_eckd_confdata {
+/* elements of the configuration data */
+struct dasd_ned {
 	struct {
-		struct {
-			unsigned char identifier:2;
-			unsigned char token_id:1;
-			unsigned char sno_valid:1;
-			unsigned char subst_sno:1;
-			unsigned char recNED:1;
-			unsigned char emuNED:1;
-			unsigned char reserved:1;
-		} __attribute__ ((packed)) flags;
-		__u8 descriptor;
-		__u8 dev_class;
-		__u8 reserved;
-		unsigned char dev_type[6];
-		unsigned char dev_model[3];
-		unsigned char HDA_manufacturer[3];
-		unsigned char HDA_location[2];
-		unsigned char HDA_seqno[12];
-		__u8 ID;
-		__u8 unit_addr;
-	} __attribute__ ((packed)) ned1;
-	union {
-		struct {
-			struct {
-				unsigned char identifier:2;
-				unsigned char token_id:1;
-				unsigned char sno_valid:1;
-				unsigned char subst_sno:1;
-				unsigned char recNED:1;
-				unsigned char emuNED:1;
-				unsigned char reserved:1;
-			} __attribute__ ((packed)) flags;
-			__u8 descriptor;
-			__u8 reserved[2];
-			unsigned char dev_type[6];
-			unsigned char dev_model[3];
-			unsigned char DASD_manufacturer[3];
-			unsigned char DASD_location[2];
-			unsigned char DASD_seqno[12];
-			__u16 ID;
-		} __attribute__ ((packed)) ned;
-		struct {
-			unsigned char flags;            /* byte  0    */
-			unsigned char res1;		/* byte  1    */
-			__u16 format;			/* byte  2-3  */
-			unsigned char res2[4];		/* byte  4-7  */
-			unsigned char sua_flags;	/* byte  8    */
-			__u8 base_unit_addr;            /* byte  9    */
-			unsigned char res3[22];	        /* byte 10-31 */
-		} __attribute__ ((packed)) sneq;
-	} __attribute__ ((packed)) ned2;
+		__u8 identifier:2;
+		__u8 token_id:1;
+		__u8 sno_valid:1;
+		__u8 subst_sno:1;
+		__u8 recNED:1;
+		__u8 emuNED:1;
+		__u8 reserved:1;
+	} __attribute__ ((packed)) flags;
+	__u8 descriptor;
+	__u8 dev_class;
+	__u8 reserved;
+	__u8 dev_type[6];
+	__u8 dev_model[3];
+	__u8 HDA_manufacturer[3];
+	__u8 HDA_location[2];
+	__u8 HDA_seqno[12];
+	__u8 ID;
+	__u8 unit_addr;
+} __attribute__ ((packed));
+
+struct dasd_sneq {
 	struct {
-		struct {
-			unsigned char identifier:2;
-			unsigned char token_id:1;
-			unsigned char sno_valid:1;
-			unsigned char subst_sno:1;
-			unsigned char recNED:1;
-			unsigned char emuNED:1;
-			unsigned char reserved:1;
-		} __attribute__ ((packed)) flags;
-		__u8 descriptor;
-		__u8 reserved[2];
-		unsigned char cont_type[6];
-		unsigned char cont_model[3];
-		unsigned char cont_manufacturer[3];
-		unsigned char cont_location[2];
-		unsigned char cont_seqno[12];
-		__u16 ID;
-	} __attribute__ ((packed)) ned3;
+		__u8 identifier:2;
+		__u8 reserved:6;
+	} __attribute__ ((packed)) flags;
+	__u8 res1;
+	__u16 format;
+	__u8 res2[4];		/* byte  4- 7 */
+	__u8 sua_flags;		/* byte  8    */
+	__u8 base_unit_addr;	/* byte  9    */
+	__u8 res3[22];		/* byte 10-31 */
+} __attribute__ ((packed));
+
+struct vd_sneq {
 	struct {
-		struct {
-			unsigned char identifier:2;
-			unsigned char token_id:1;
-			unsigned char sno_valid:1;
-			unsigned char subst_sno:1;
-			unsigned char recNED:1;
-			unsigned char emuNED:1;
-			unsigned char reserved:1;
-		} __attribute__ ((packed)) flags;
-		__u8 descriptor;
-		__u8 reserved[2];
-		unsigned char cont_type[6];
-		unsigned char empty[3];
-		unsigned char cont_manufacturer[3];
-		unsigned char cont_location[2];
-		unsigned char cont_seqno[12];
-		__u16 ID;
-	} __attribute__ ((packed)) ned4;
-	unsigned char ned5[32];
-	unsigned char ned6[32];
-	unsigned char ned7[32];
+		__u8 identifier:2;
+		__u8 reserved:6;
+	} __attribute__ ((packed)) flags;
+	__u8 res1;
+	__u16 format;
+	__u8 res2[4];	/* byte  4- 7 */
+	__u8 uit[16];	/* byte  8-23 */
+	__u8 res3[8];	/* byte 24-31 */
+} __attribute__ ((packed));
+
+struct dasd_gneq {
 	struct {
-		struct {
-			unsigned char identifier:2;
-			unsigned char reserved:6;
-		} __attribute__ ((packed)) flags;
-		__u8 selector;
-		__u16 interfaceID;
-		__u32 reserved;
-		__u16 subsystemID;
-		struct {
-			unsigned char sp0:1;
-			unsigned char sp1:1;
-			unsigned char reserved:5;
-			unsigned char scluster:1;
-		} __attribute__ ((packed)) spathID;
-		__u8 unit_address;
-		__u8 dev_ID;
-		__u8 dev_address;
-		__u8 adapterID;
-		__u16 link_address;
-		struct {
-			unsigned char parallel:1;
-			unsigned char escon:1;
-			unsigned char reserved:1;
-			unsigned char ficon:1;
-			unsigned char reserved2:4;
-		} __attribute__ ((packed)) protocol_type;
-		struct {
-			unsigned char PID_in_236:1;
-			unsigned char reserved:7;
-		} __attribute__ ((packed)) format_flags;
-		__u8 log_dev_address;
-		unsigned char reserved2[12];
-	} __attribute__ ((packed)) neq;
+		__u8 identifier:2;
+		__u8 reserved:6;
+	} __attribute__ ((packed)) flags;
+	__u8 reserved[7];
+	__u16 subsystemID;
+	__u8 reserved2[22];
 } __attribute__ ((packed));
 
 struct dasd_eckd_path {
@@ -463,7 +392,14 @@ struct alias_pav_group {
 
 struct dasd_eckd_private {
 	struct dasd_eckd_characteristics rdc_data;
-	struct dasd_eckd_confdata conf_data;
+	u8 *conf_data;
+	int conf_len;
+	/* pointers to specific parts in the conf_data */
+	struct dasd_ned *ned;
+	struct dasd_sneq *sneq;
+	struct vd_sneq *vdsneq;
+	struct dasd_gneq *gneq;
+
 	struct dasd_eckd_path path_data;
 	struct eckd_count count_area[5];
 	int init_cqr_status;
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index fb2f931cf844..31ecaa4a40e4 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -307,6 +307,7 @@ struct dasd_uid {
 	__u16 ssid;
 	__u8 real_unit_addr;
 	__u8 base_unit_addr;
+	char vduit[33];
 };
 
 /*
-- 
cgit v1.2.3-59-g8ed1b


From 3a95e8eb34f595a0144adb6e5513d456319bd8a5 Mon Sep 17 00:00:00 2001
From: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Date: Fri, 1 Aug 2008 16:39:10 +0200
Subject: [S390] ipl: Reboot from alternate device does not work when booting
 from file

During startup we check if diag308 works using diag 308 subcode 6,
which stores the actual ipl information. This fails with rc = 0x102, if
the system has been ipled from the HMC using load from CD or load from file.
In the case of rc = 0x102 we have to assume that diag 308 is working,
since it still can be used to ipl from an alternative device.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 arch/s390/kernel/ipl.c | 5 ++++-
 include/asm-s390/ipl.h | 3 ++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 54b2779b5e2f..2dcf590faba6 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -1705,7 +1705,10 @@ void __init setup_ipl(void)
 
 void __init ipl_update_parameters(void)
 {
-	if (diag308(DIAG308_STORE, &ipl_block) == DIAG308_RC_OK)
+	int rc;
+
+	rc = diag308(DIAG308_STORE, &ipl_block);
+	if ((rc == DIAG308_RC_OK) || (rc == DIAG308_RC_NOCONFIG))
 		diag308_set_works = 1;
 }
 
diff --git a/include/asm-s390/ipl.h b/include/asm-s390/ipl.h
index eaca6dff5405..1171e6d144a3 100644
--- a/include/asm-s390/ipl.h
+++ b/include/asm-s390/ipl.h
@@ -159,7 +159,8 @@ enum diag308_vm_flags {
 };
 
 enum diag308_rc {
-	DIAG308_RC_OK	= 1,
+	DIAG308_RC_OK		= 0x0001,
+	DIAG308_RC_NOCONFIG	= 0x0102,
 };
 
 extern int diag308(unsigned long subcode, void *addr);
-- 
cgit v1.2.3-59-g8ed1b


From 934b2857cc576ae53c92a66e63fce7ddcfa74691 Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:11 +0200
Subject: [S390] nohz/sclp: disable timer on synchronous waits.

sclp_sync_wait wait synchronously for an sclp interrupt and disables
timer interrupts. However on the irq enter paths there is an extra
check if a timer interrupt would be due and calls the timer callback.
This would schedule softirqs in the wrong context.
So introduce local_tick_enable/disable which prevents this.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 arch/s390/lib/delay.c      |  4 ++--
 drivers/s390/char/sclp.c   |  6 ++++--
 include/asm-s390/hardirq.h | 14 ++++++++++++++
 3 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c
index eae21a8ac72d..fc6ab6094df8 100644
--- a/arch/s390/lib/delay.c
+++ b/arch/s390/lib/delay.c
@@ -43,7 +43,7 @@ void __udelay(unsigned long usecs)
 		local_bh_disable();
 	local_irq_save(flags);
 	if (raw_irqs_disabled_flags(flags)) {
-		old_cc = S390_lowcore.clock_comparator;
+		old_cc = local_tick_disable();
 		S390_lowcore.clock_comparator = -1ULL;
 		__ctl_store(cr0, 0, 0);
 		dummy = (cr0 & 0xffff00e0) | 0x00000800;
@@ -65,7 +65,7 @@ void __udelay(unsigned long usecs)
 
 	if (raw_irqs_disabled_flags(flags)) {
 		__ctl_load(cr0, 0, 0);
-		S390_lowcore.clock_comparator = old_cc;
+		local_tick_enable(old_cc);
 	}
 	if (!irq_context)
 		_local_bh_enable();
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index 3c8b25e6c345..1fd8f2193ed8 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -399,6 +399,7 @@ sclp_tod_from_jiffies(unsigned long jiffies)
 void
 sclp_sync_wait(void)
 {
+	unsigned long long old_tick;
 	unsigned long flags;
 	unsigned long cr0, cr0_sync;
 	u64 timeout;
@@ -419,11 +420,12 @@ sclp_sync_wait(void)
 	if (!irq_context)
 		local_bh_disable();
 	/* Enable service-signal interruption, disable timer interrupts */
+	old_tick = local_tick_disable();
 	trace_hardirqs_on();
 	__ctl_store(cr0, 0, 0);
 	cr0_sync = cr0;
+	cr0_sync &= 0xffff00a0;
 	cr0_sync |= 0x00000200;
-	cr0_sync &= 0xFFFFF3AC;
 	__ctl_load(cr0_sync, 0, 0);
 	__raw_local_irq_stosm(0x01);
 	/* Loop until driver state indicates finished request */
@@ -439,9 +441,9 @@ sclp_sync_wait(void)
 	__ctl_load(cr0, 0, 0);
 	if (!irq_context)
 		_local_bh_enable();
+	local_tick_enable(old_tick);
 	local_irq_restore(flags);
 }
-
 EXPORT_SYMBOL(sclp_sync_wait);
 
 /* Dispatch changes in send and receive mask to registered listeners. */
diff --git a/include/asm-s390/hardirq.h b/include/asm-s390/hardirq.h
index 4b7cb964ff35..89ec7056da28 100644
--- a/include/asm-s390/hardirq.h
+++ b/include/asm-s390/hardirq.h
@@ -34,4 +34,18 @@ typedef struct {
 
 void clock_comparator_work(void);
 
+static inline unsigned long long local_tick_disable(void)
+{
+	unsigned long long old;
+
+	old = S390_lowcore.clock_comparator;
+	S390_lowcore.clock_comparator = -1ULL;
+	return old;
+}
+
+static inline void local_tick_enable(unsigned long long comp)
+{
+	S390_lowcore.clock_comparator = comp;
+}
+
 #endif /* __ASM_HARDIRQ_H */
-- 
cgit v1.2.3-59-g8ed1b


From a4b526b3ba6353cd89a38e41da48ed83b0ead16f Mon Sep 17 00:00:00 2001
From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:12 +0200
Subject: [S390] Optimize storage key operations for anon pages

For anonymous pages without a swap cache backing the check in
page_remove_rmap for the physical dirty bit in page_remove_rmap is
unnecessary. The instructions that are used to check and reset the dirty
bit are expensive. Removing the check noticably speeds up process exit.
In addition the clearing of the dirty bit in __SetPageUptodate is
pointless as well. With these two changes there is no storage key
operation for an anonymous page anymore if it does not hit the swap
space.

The micro benchmark which repeatedly executes an empty shell script
gets about 5% faster.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 include/linux/page-flags.h | 3 ---
 mm/rmap.c                  | 3 ++-
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 54590a9a103e..25aaccdb2f26 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -239,9 +239,6 @@ static inline void __SetPageUptodate(struct page *page)
 {
 	smp_wmb();
 	__set_bit(PG_uptodate, &(page)->flags);
-#ifdef CONFIG_S390
-	page_clear_dirty(page);
-#endif
 }
 
 static inline void SetPageUptodate(struct page *page)
diff --git a/mm/rmap.c b/mm/rmap.c
index 99bc3f9cd796..94a5246a3f98 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -667,7 +667,8 @@ void page_remove_rmap(struct page *page, struct vm_area_struct *vma)
 		 * Leaving it set also helps swapoff to reinstate ptes
 		 * faster for those pages still in swapcache.
 		 */
-		if (page_test_dirty(page)) {
+		if ((!PageAnon(page) || PageSwapCache(page)) &&
+		    page_test_dirty(page)) {
 			page_clear_dirty(page);
 			set_page_dirty(page);
 		}
-- 
cgit v1.2.3-59-g8ed1b


From 683d718a893575a88c551ad71ea2c382eedbf67e Mon Sep 17 00:00:00 2001
From: Frank Blaschka <frank.blaschka@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:13 +0200
Subject: [S390] qeth: preallocated qeth header for hiper socket

For hiper socket devices this patch will economize the reallocation
of the tx skb data segment by allocating separate memory for the qdio
transport information (qeth header).

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 drivers/s390/net/qeth_core.h      |  5 ++--
 drivers/s390/net/qeth_core_main.c | 59 ++++++++++++++++++++++++++++++---------
 drivers/s390/net/qeth_l2_main.c   | 50 +++++++++++++++++++++++++--------
 drivers/s390/net/qeth_l3_main.c   | 51 ++++++++++++++++++++++++---------
 4 files changed, 126 insertions(+), 39 deletions(-)

diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 1895dbb553cd..80971c21ea1a 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -419,6 +419,7 @@ struct qeth_qdio_out_buffer {
 	int next_element_to_fill;
 	struct sk_buff_head skb_list;
 	struct list_head ctx_list;
+	int is_header[16];
 };
 
 struct qeth_card;
@@ -785,7 +786,7 @@ void qeth_core_remove_osn_attributes(struct device *);
 
 /* exports for qeth discipline device drivers */
 extern struct qeth_card_list_struct qeth_core_card_list;
-
+extern struct kmem_cache *qeth_core_header_cache;
 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
 
 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
@@ -843,7 +844,7 @@ int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
 int qeth_get_elements_no(struct qeth_card *, void *, struct sk_buff *, int);
 int qeth_do_send_packet_fast(struct qeth_card *, struct qeth_qdio_out_q *,
 			struct sk_buff *, struct qeth_hdr *, int,
-			struct qeth_eddp_context *);
+			struct qeth_eddp_context *, int, int);
 int qeth_do_send_packet(struct qeth_card *, struct qeth_qdio_out_q *,
 		    struct sk_buff *, struct qeth_hdr *,
 		    int, struct qeth_eddp_context *);
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index cebb25e36e82..7a5549919717 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -48,6 +48,8 @@ EXPORT_SYMBOL_GPL(qeth_dbf);
 
 struct qeth_card_list_struct qeth_core_card_list;
 EXPORT_SYMBOL_GPL(qeth_core_card_list);
+struct kmem_cache *qeth_core_header_cache;
+EXPORT_SYMBOL_GPL(qeth_core_header_cache);
 
 static struct device *qeth_core_root_dev;
 static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
@@ -933,6 +935,10 @@ static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
 	}
 	qeth_eddp_buf_release_contexts(buf);
 	for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
+		if (buf->buffer->element[i].addr && buf->is_header[i])
+			kmem_cache_free(qeth_core_header_cache,
+				buf->buffer->element[i].addr);
+		buf->is_header[i] = 0;
 		buf->buffer->element[i].length = 0;
 		buf->buffer->element[i].addr = NULL;
 		buf->buffer->element[i].flags = 0;
@@ -3002,8 +3008,8 @@ int qeth_get_elements_no(struct qeth_card *card, void *hdr,
 	if (skb_shinfo(skb)->nr_frags > 0)
 		elements_needed = (skb_shinfo(skb)->nr_frags + 1);
 	if (elements_needed == 0)
-		elements_needed = 1 + (((((unsigned long) hdr) % PAGE_SIZE)
-			+ skb->len) >> PAGE_SHIFT);
+		elements_needed = 1 + (((((unsigned long) skb->data) %
+				PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
 	if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
 		QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
 			"(Number=%d / Length=%d). Discarded.\n",
@@ -3015,7 +3021,8 @@ int qeth_get_elements_no(struct qeth_card *card, void *hdr,
 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
 
 static inline void __qeth_fill_buffer(struct sk_buff *skb,
-	struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill)
+	struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
+	int offset)
 {
 	int length = skb->len;
 	int length_here;
@@ -3027,6 +3034,11 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb,
 	data = skb->data;
 	first_lap = (is_tso == 0 ? 1 : 0);
 
+	if (offset >= 0) {
+		data = skb->data + offset;
+		first_lap = 0;
+	}
+
 	while (length > 0) {
 		/* length_here is the remaining amount of data in this page */
 		length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
@@ -3058,22 +3070,22 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb,
 }
 
 static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
-		struct qeth_qdio_out_buffer *buf, struct sk_buff *skb)
+		struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
+		struct qeth_hdr *hdr, int offset, int hd_len)
 {
 	struct qdio_buffer *buffer;
-	struct qeth_hdr_tso *hdr;
 	int flush_cnt = 0, hdr_len, large_send = 0;
 
 	buffer = buf->buffer;
 	atomic_inc(&skb->users);
 	skb_queue_tail(&buf->skb_list, skb);
 
-	hdr  = (struct qeth_hdr_tso *) skb->data;
 	/*check first on TSO ....*/
-	if (hdr->hdr.hdr.l3.id == QETH_HEADER_TYPE_TSO) {
+	if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
 		int element = buf->next_element_to_fill;
 
-		hdr_len = sizeof(struct qeth_hdr_tso) + hdr->ext.dg_hdr_len;
+		hdr_len = sizeof(struct qeth_hdr_tso) +
+			((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
 		/*fill first buffer entry only with header information */
 		buffer->element[element].addr = skb->data;
 		buffer->element[element].length = hdr_len;
@@ -3083,9 +3095,20 @@ static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
 		skb->len  -= hdr_len;
 		large_send = 1;
 	}
+
+	if (offset >= 0) {
+		int element = buf->next_element_to_fill;
+		buffer->element[element].addr = hdr;
+		buffer->element[element].length = sizeof(struct qeth_hdr) +
+							hd_len;
+		buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
+		buf->is_header[element] = 1;
+		buf->next_element_to_fill++;
+	}
+
 	if (skb_shinfo(skb)->nr_frags == 0)
 		__qeth_fill_buffer(skb, buffer, large_send,
-				   (int *)&buf->next_element_to_fill);
+				(int *)&buf->next_element_to_fill, offset);
 	else
 		__qeth_fill_buffer_frag(skb, buffer, large_send,
 					(int *)&buf->next_element_to_fill);
@@ -3115,7 +3138,7 @@ static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
 int qeth_do_send_packet_fast(struct qeth_card *card,
 		struct qeth_qdio_out_q *queue, struct sk_buff *skb,
 		struct qeth_hdr *hdr, int elements_needed,
-		struct qeth_eddp_context *ctx)
+		struct qeth_eddp_context *ctx, int offset, int hd_len)
 {
 	struct qeth_qdio_out_buffer *buffer;
 	int buffers_needed = 0;
@@ -3148,7 +3171,7 @@ int qeth_do_send_packet_fast(struct qeth_card *card,
 	}
 	atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
 	if (ctx == NULL) {
-		qeth_fill_buffer(queue, buffer, skb);
+		qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
 		qeth_flush_buffers(queue, index, 1);
 	} else {
 		flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
@@ -3224,7 +3247,7 @@ int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
 		}
 	}
 	if (ctx == NULL)
-		tmp = qeth_fill_buffer(queue, buffer, skb);
+		tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
 	else {
 		tmp = qeth_eddp_fill_buffer(queue, ctx,
 						queue->next_buf_to_fill);
@@ -4443,8 +4466,17 @@ static int __init qeth_core_init(void)
 	rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
 	if (rc)
 		goto register_err;
-	return 0;
 
+	qeth_core_header_cache = kmem_cache_create("qeth_hdr",
+			sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
+	if (!qeth_core_header_cache) {
+		rc = -ENOMEM;
+		goto slab_err;
+	}
+
+	return 0;
+slab_err:
+	s390_root_dev_unregister(qeth_core_root_dev);
 register_err:
 	driver_remove_file(&qeth_core_ccwgroup_driver.driver,
 			   &driver_attr_group);
@@ -4466,6 +4498,7 @@ static void __exit qeth_core_exit(void)
 			   &driver_attr_group);
 	ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
 	ccw_driver_unregister(&qeth_ccw_driver);
+	kmem_cache_destroy(qeth_core_header_cache);
 	qeth_unregister_dbf_views();
 	PRINT_INFO("core functions removed\n");
 }
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index a8b069cd9a4c..b3cee032f578 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -243,8 +243,7 @@ static void qeth_l2_get_packet_type(struct qeth_card *card,
 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
 			struct sk_buff *skb, int ipv, int cast_type)
 {
-	struct vlan_ethhdr *veth = (struct vlan_ethhdr *)((skb->data) +
-					QETH_HEADER_SIZE);
+	struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
 
 	memset(hdr, 0, sizeof(struct qeth_hdr));
 	hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
@@ -621,6 +620,9 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	int tx_bytes = skb->len;
 	enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
 	struct qeth_eddp_context *ctx = NULL;
+	int data_offset = -1;
+	int elements_needed = 0;
+	int hd_len = 0;
 
 	if ((card->state != CARD_STATE_UP) || !card->lan_online) {
 		card->stats.tx_carrier_errors++;
@@ -643,13 +645,32 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	if (card->info.type == QETH_CARD_TYPE_OSN)
 		hdr = (struct qeth_hdr *)skb->data;
 	else {
-		/* create a clone with writeable headroom */
-		new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr));
-		if (!new_skb)
-			goto tx_drop;
-		hdr = (struct qeth_hdr *)skb_push(new_skb,
+		if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
+		    (skb_shinfo(skb)->nr_frags == 0)) {
+			new_skb = skb;
+			data_offset = ETH_HLEN;
+			hd_len = ETH_HLEN;
+			hdr = kmem_cache_alloc(qeth_core_header_cache,
+						GFP_ATOMIC);
+			if (!hdr)
+				goto tx_drop;
+			elements_needed++;
+			skb_reset_mac_header(new_skb);
+			qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
+			hdr->hdr.l2.pkt_length = new_skb->len;
+			memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
+				skb_mac_header(new_skb), ETH_HLEN);
+		} else {
+			/* create a clone with writeable headroom */
+			new_skb = skb_realloc_headroom(skb,
+						sizeof(struct qeth_hdr));
+			if (!new_skb)
+				goto tx_drop;
+			hdr = (struct qeth_hdr *)skb_push(new_skb,
 						sizeof(struct qeth_hdr));
-		qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
+			skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
+			qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
+		}
 	}
 
 	if (large_send == QETH_LARGE_SEND_EDDP) {
@@ -660,9 +681,13 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 			goto tx_drop;
 		}
 	} else {
-		elements = qeth_get_elements_no(card, (void *)hdr, new_skb, 0);
-		if (!elements)
+		elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
+						elements_needed);
+		if (!elements) {
+			if (data_offset >= 0)
+				kmem_cache_free(qeth_core_header_cache, hdr);
 			goto tx_drop;
+		}
 	}
 
 	if ((large_send == QETH_LARGE_SEND_NO) &&
@@ -674,7 +699,7 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 					 elements, ctx);
 	else
 		rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
-					      elements, ctx);
+					elements, ctx, data_offset, hd_len);
 	if (!rc) {
 		card->stats.tx_packets++;
 		card->stats.tx_bytes += tx_bytes;
@@ -701,6 +726,9 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		if (ctx != NULL)
 			qeth_eddp_put_context(ctx);
 
+		if (data_offset >= 0)
+			kmem_cache_free(qeth_core_header_cache, hdr);
+
 		if (rc == -EBUSY) {
 			if (new_skb != skb)
 				dev_kfree_skb_any(new_skb);
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 3e1d13857350..dd72c3c20165 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -2604,6 +2604,7 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	int tx_bytes = skb->len;
 	enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
 	struct qeth_eddp_context *ctx = NULL;
+	int data_offset = -1;
 
 	if ((card->info.type == QETH_CARD_TYPE_IQD) &&
 	    (skb->protocol != htons(ETH_P_IPV6)) &&
@@ -2624,14 +2625,28 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		card->perf_stats.outbound_start_time = qeth_get_micros();
 	}
 
-	/* create a clone with writeable headroom */
-	new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso) +
-					VLAN_HLEN);
-	if (!new_skb)
-		goto tx_drop;
+	if (skb_is_gso(skb))
+		large_send = card->options.large_send;
+
+	if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
+	    (skb_shinfo(skb)->nr_frags == 0)) {
+		new_skb = skb;
+		data_offset = ETH_HLEN;
+		hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
+		if (!hdr)
+			goto tx_drop;
+		elements_needed++;
+	} else {
+		/* create a clone with writeable headroom */
+		new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
+					+ VLAN_HLEN);
+		if (!new_skb)
+			goto tx_drop;
+	}
 
 	if (card->info.type == QETH_CARD_TYPE_IQD) {
-		skb_pull(new_skb, ETH_HLEN);
+		if (data_offset < 0)
+			skb_pull(new_skb, ETH_HLEN);
 	} else {
 		if (new_skb->protocol == htons(ETH_P_IP)) {
 			if (card->dev->type == ARPHRD_IEEE802_TR)
@@ -2657,9 +2672,6 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	netif_stop_queue(dev);
 
-	if (skb_is_gso(new_skb))
-		large_send = card->options.large_send;
-
 	/* fix hardware limitation: as long as we do not have sbal
 	 * chaining we can not send long frag lists so we temporary
 	 * switch to EDDP
@@ -2677,9 +2689,16 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		qeth_tso_fill_header(card, hdr, new_skb);
 		elements_needed++;
 	} else {
-		hdr = (struct qeth_hdr *)skb_push(new_skb,
+		if (data_offset < 0) {
+			hdr = (struct qeth_hdr *)skb_push(new_skb,
 						sizeof(struct qeth_hdr));
-		qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
+			qeth_l3_fill_header(card, hdr, new_skb, ipv,
+						cast_type);
+		} else {
+			qeth_l3_fill_header(card, hdr, new_skb, ipv,
+						cast_type);
+			hdr->hdr.l3.length = new_skb->len - data_offset;
+		}
 	}
 
 	if (large_send == QETH_LARGE_SEND_EDDP) {
@@ -2695,8 +2714,11 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	} else {
 		int elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
 						 elements_needed);
-		if (!elems)
+		if (!elems) {
+			if (data_offset >= 0)
+				kmem_cache_free(qeth_core_header_cache, hdr);
 			goto tx_drop;
+		}
 		elements_needed += elems;
 	}
 
@@ -2709,7 +2731,7 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 					 elements_needed, ctx);
 	else
 		rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
-					      elements_needed, ctx);
+					elements_needed, ctx, data_offset, 0);
 
 	if (!rc) {
 		card->stats.tx_packets++;
@@ -2737,6 +2759,9 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		if (ctx != NULL)
 			qeth_eddp_put_context(ctx);
 
+		if (data_offset >= 0)
+			kmem_cache_free(qeth_core_header_cache, hdr);
+
 		if (rc == -EBUSY) {
 			if (new_skb != skb)
 				dev_kfree_skb_any(new_skb);
-- 
cgit v1.2.3-59-g8ed1b


From 883e512c99fc398d1b2b5e8e92b6bacff2551756 Mon Sep 17 00:00:00 2001
From: Michael Ernst <mernst@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:14 +0200
Subject: [S390] cio: Memory allocation for idset changed.

Memory allocation for the quite huge idset changed from
kzalloc to vmalloc.

Signed-off-by: Michael Ernst <mernst@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 drivers/s390/cio/idset.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/s390/cio/idset.c b/drivers/s390/cio/idset.c
index ef7bc0a125ef..cf8f24a4b5eb 100644
--- a/drivers/s390/cio/idset.c
+++ b/drivers/s390/cio/idset.c
@@ -5,7 +5,7 @@
  *    Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
  */
 
-#include <linux/slab.h>
+#include <linux/vmalloc.h>
 #include <linux/bitops.h>
 #include "idset.h"
 #include "css.h"
@@ -25,18 +25,18 @@ static struct idset *idset_new(int num_ssid, int num_id)
 {
 	struct idset *set;
 
-	set = kzalloc(sizeof(struct idset) + bitmap_size(num_ssid, num_id),
-		      GFP_KERNEL);
+	set = vmalloc(sizeof(struct idset) + bitmap_size(num_ssid, num_id));
 	if (set) {
 		set->num_ssid = num_ssid;
 		set->num_id = num_id;
+		memset(set->bitmap, 0, bitmap_size(num_ssid, num_id));
 	}
 	return set;
 }
 
 void idset_free(struct idset *set)
 {
-	kfree(set);
+	vfree(set);
 }
 
 void idset_clear(struct idset *set)
-- 
cgit v1.2.3-59-g8ed1b


From 519620cc3d723d41522191ebd150fba4a3790296 Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:15 +0200
Subject: [S390] Wire up new syscalls.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 arch/s390/kernel/compat_wrapper.S | 37 +++++++++++++++++++++++++++++++++++++
 arch/s390/kernel/syscalls.S       |  6 ++++++
 include/asm-s390/unistd.h         |  8 +++++++-
 3 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index d003a6e16afb..328a20e880b5 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1732,3 +1732,40 @@ compat_sys_timerfd_gettime_wrapper:
 	lgfr	%r2,%r2			# int
 	llgtr	%r3,%r3			# struct compat_itimerspec *
 	jg	compat_sys_timerfd_gettime
+
+	.globl compat_sys_signalfd4_wrapper
+compat_sys_signalfd4_wrapper:
+	lgfr	%r2,%r2			# int
+	llgtr	%r3,%r3			# compat_sigset_t *
+	llgfr	%r4,%r4			# compat_size_t
+	lgfr	%r5,%r5			# int
+	jg	compat_sys_signalfd4
+
+	.globl sys_eventfd2_wrapper
+sys_eventfd2_wrapper:
+	llgfr	%r2,%r2			# unsigned int
+	lgfr	%r3,%r3			# int
+	jg	sys_eventfd2
+
+	.globl	sys_inotify_init1_wrapper
+sys_inotify_init1_wrapper:
+	lgfr	%r2,%r2			# int
+	jg	sys_inotify_init1
+
+	.globl	sys_pipe2_wrapper
+sys_pipe2_wrapper:
+	llgtr	%r2,%r2			# u32 *
+	lgfr	%r3,%r3			# int
+	jg	sys_pipe2		# branch to system call
+
+	.globl	sys_dup3_wrapper
+sys_dup3_wrapper:
+	llgfr	%r2,%r2			# unsigned int
+	llgfr	%r3,%r3			# unsigned int
+	lgfr	%r4,%r4			# int
+	jg	sys_dup3		# branch to system call
+
+	.globl	sys_epoll_create1_wrapper
+sys_epoll_create1_wrapper:
+	lgfr	%r2,%r2			# int
+	jg	sys_epoll_create1	# branch to system call
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index c87ec687d4c6..c66d35e55142 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -330,3 +330,9 @@ SYSCALL(sys_eventfd,sys_eventfd,sys_eventfd_wrapper)
 SYSCALL(sys_timerfd_create,sys_timerfd_create,sys_timerfd_create_wrapper)
 SYSCALL(sys_timerfd_settime,sys_timerfd_settime,compat_sys_timerfd_settime_wrapper) /* 320 */
 SYSCALL(sys_timerfd_gettime,sys_timerfd_gettime,compat_sys_timerfd_gettime_wrapper)
+SYSCALL(sys_signalfd4,sys_signalfd4,compat_sys_signalfd4_wrapper)
+SYSCALL(sys_eventfd2,sys_eventfd2,sys_eventfd2_wrapper)
+SYSCALL(sys_inotify_init1,sys_inotify_init1,sys_inotify_init1_wrapper)
+SYSCALL(sys_pipe2,sys_pipe2,sys_pipe2_wrapper) /* 325 */
+SYSCALL(sys_dup3,sys_dup3,sys_dup3_wrapper)
+SYSCALL(sys_epoll_create1,sys_epoll_create1,sys_epoll_create1_wrapper)
diff --git a/include/asm-s390/unistd.h b/include/asm-s390/unistd.h
index 583da807ea97..c8ad350d1444 100644
--- a/include/asm-s390/unistd.h
+++ b/include/asm-s390/unistd.h
@@ -259,7 +259,13 @@
 #define __NR_timerfd_create	319
 #define __NR_timerfd_settime	320
 #define __NR_timerfd_gettime	321
-#define NR_syscalls 322
+#define __NR_signalfd4		322
+#define __NR_eventfd2		323
+#define __NR_inotify_init1	324
+#define __NR_pipe2		325
+#define __NR_dup3		326
+#define __NR_epoll_create1	327
+#define NR_syscalls 328
 
 /* 
  * There are some system calls that are not present on 64 bit, some
-- 
cgit v1.2.3-59-g8ed1b


From 7e9238fbc10373effc2c3b0b516b0bdc8fefc27b Mon Sep 17 00:00:00 2001
From: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:16 +0200
Subject: [S390] Add support for memory hot-remove.

This patch enables memory hot-remove on s390.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 arch/s390/Kconfig            |  3 +++
 arch/s390/mm/init.c          | 13 ++++++++++++-
 drivers/s390/char/sclp_cmd.c |  5 +++++
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 2ed88122be93..8d41908e2513 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -317,6 +317,9 @@ config ARCH_ENABLE_MEMORY_HOTPLUG
 	def_bool y
 	depends on SPARSEMEM
 
+config ARCH_ENABLE_MEMORY_HOTREMOVE
+	def_bool y
+
 source "mm/Kconfig"
 
 comment "I/O subsystem configuration"
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 4993b0f594eb..1169130a97ef 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -179,7 +179,7 @@ int arch_add_memory(int nid, u64 start, u64 size)
 	int rc;
 
 	pgdat = NODE_DATA(nid);
-	zone = pgdat->node_zones + ZONE_NORMAL;
+	zone = pgdat->node_zones + ZONE_MOVABLE;
 	rc = vmem_add_mapping(start, size);
 	if (rc)
 		return rc;
@@ -189,3 +189,14 @@ int arch_add_memory(int nid, u64 start, u64 size)
 	return rc;
 }
 #endif /* CONFIG_MEMORY_HOTPLUG */
+
+#ifdef CONFIG_MEMORY_HOTREMOVE
+int remove_memory(u64 start, u64 size)
+{
+	unsigned long start_pfn, end_pfn;
+
+	start_pfn = PFN_DOWN(start);
+	end_pfn = start_pfn + PFN_DOWN(size);
+	return offline_pages(start_pfn, end_pfn, 120 * HZ);
+}
+#endif /* CONFIG_MEMORY_HOTREMOVE */
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index 0c2b77493db4..eb5f1b8bc57f 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -427,6 +427,8 @@ static int sclp_mem_notifier(struct notifier_block *nb,
 			sclp_attach_storage(id);
 	switch (action) {
 	case MEM_ONLINE:
+	case MEM_GOING_OFFLINE:
+	case MEM_CANCEL_OFFLINE:
 		break;
 	case MEM_GOING_ONLINE:
 		rc = sclp_mem_change_state(start, size, 1);
@@ -434,6 +436,9 @@ static int sclp_mem_notifier(struct notifier_block *nb,
 	case MEM_CANCEL_ONLINE:
 		sclp_mem_change_state(start, size, 0);
 		break;
+	case MEM_OFFLINE:
+		sclp_mem_change_state(start, size, 0);
+		break;
 	default:
 		rc = -EINVAL;
 		break;
-- 
cgit v1.2.3-59-g8ed1b


From 3b8e3004aea95c687e8991583e7b150ec1416ff3 Mon Sep 17 00:00:00 2001
From: Jan Glauber <jang@linux.vnet.ibm.com>
Date: Fri, 1 Aug 2008 16:39:17 +0200
Subject: [S390] qdio: make sure qdr is aligned to page size

kzalloc does not guarantee the required alignment of qdr to page size,
use get_zeroed_page instead.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
---
 drivers/s390/cio/qdio_main.c  | 2 +-
 drivers/s390/cio/qdio_setup.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index d10c73cc1688..d15648514a0f 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -1355,7 +1355,7 @@ int qdio_allocate(struct qdio_initialize *init_data)
 		goto out_rel;
 
 	/* qdr is used in ccw1.cda which is u32 */
-	irq_ptr->qdr = kzalloc(sizeof(struct qdr), GFP_KERNEL | GFP_DMA);
+	irq_ptr->qdr = (struct qdr *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
 	if (!irq_ptr->qdr)
 		goto out_rel;
 	WARN_ON((unsigned long)irq_ptr->qdr & 0xfff);
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index f0923a8aceda..56fdd57ba192 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -325,7 +325,7 @@ void qdio_release_memory(struct qdio_irq *irq_ptr)
 			kmem_cache_free(qdio_q_cache, q);
 		}
 	}
-	kfree(irq_ptr->qdr);
+	free_page((unsigned long) irq_ptr->qdr);
 	free_page(irq_ptr->chsc_page);
 	free_page((unsigned long) irq_ptr);
 }
-- 
cgit v1.2.3-59-g8ed1b


From d918fe2bd72830dfbe8ca2bb30d49930d1356e6d Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:18 +0200
Subject: [S390] Remove diag 0x260 call from memory detection.

The result of the diag 0x260 call is not always what one would expect.
So just remove it.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 arch/s390/kernel/mem_detect.c | 23 -----------------------
 1 file changed, 23 deletions(-)

diff --git a/arch/s390/kernel/mem_detect.c b/arch/s390/kernel/mem_detect.c
index 18ed7abe16c5..9872999c66d1 100644
--- a/arch/s390/kernel/mem_detect.c
+++ b/arch/s390/kernel/mem_detect.c
@@ -9,27 +9,6 @@
 #include <asm/sclp.h>
 #include <asm/setup.h>
 
-static int memory_fast_detect(struct mem_chunk *chunk)
-{
-	unsigned long val0 = 0;
-	unsigned long val1 = 0xc;
-	int rc = -EOPNOTSUPP;
-
-	if (ipl_flags & IPL_NSS_VALID)
-		return -EOPNOTSUPP;
-	asm volatile(
-		"	diag	%1,%2,0x260\n"
-		"0:	lhi	%0,0\n"
-		"1:\n"
-		EX_TABLE(0b,1b)
-		: "+d" (rc), "+d" (val0), "+d" (val1) : : "cc");
-
-	if (rc || val0 != val1)
-		return -EOPNOTSUPP;
-	chunk->size = val0 + 1;
-	return 0;
-}
-
 static inline int tprot(unsigned long addr)
 {
 	int rc = -EFAULT;
@@ -84,8 +63,6 @@ void detect_memory_layout(struct mem_chunk chunk[])
 	unsigned long flags, cr0;
 
 	memset(chunk, 0, MEMORY_CHUNKS * sizeof(struct mem_chunk));
-	if (memory_fast_detect(&chunk[0]) == 0)
-		return;
 	/* Disable IRQs, DAT and low address protection so tprot does the
 	 * right thing and we don't get scheduled away with low address
 	 * protection disabled.
-- 
cgit v1.2.3-59-g8ed1b


From 8f8470032570988af2eeff520ca01a32fd908b2b Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:19 +0200
Subject: [S390] stp: fix section mismatch warning.

Fix these two (false positive) warnings by adding an __init annoation:

WARNING: vmlinux.o(.text+0x7e6a): Section mismatch in reference from the function stp_reset() to the function .init.text:__alloc_bootmem()
The function stp_reset() references
the function __init __alloc_bootmem().
This is often because stp_reset lacks a __init
annotation or the annotation of __alloc_bootmem is wrong.

WARNING: vmlinux.o(.text+0x7ece): Section mismatch in reference from the function stp_reset() to the function .init.text:free_bootmem()
The function stp_reset() references
the function __init free_bootmem().
This is often because stp_reset lacks a __init
annotation or the annotation of free_bootmem is wrong.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 arch/s390/kernel/time.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index ab70d9bd9261..ca114fe46ffb 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -1348,7 +1348,7 @@ early_param("stp", early_parse_stp);
 /*
  * Reset STP attachment.
  */
-static void stp_reset(void)
+static void __init stp_reset(void)
 {
 	int rc;
 
-- 
cgit v1.2.3-59-g8ed1b


From 3f1934bc1a0dcc2b7c31c8fd4f41ea2dd6522c3e Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:20 +0200
Subject: [S390] qdio: fix section mismatch bug.

Fix the two section mismatch warnings below.
This fixes two real bugs since the code which has __exit annotations
may already be gone when it is called.

WARNING: vmlinux.o(.init.text+0x1cc4a): Section mismatch in reference from the function init_QDIO() to the function .exit.text:qdio_setup_exit()
The function __init init_QDIO() references
a function __exit qdio_setup_exit().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __exit annotation of
qdio_setup_exit() so it may be used outside an exit section.

WARNING: vmlinux.o(.init.text+0x1cc7a): Section mismatch in reference from the function init_QDIO() to the function .exit.text:qdio_remove_perf_stats()
The function __init init_QDIO() references
a function __exit qdio_remove_perf_stats().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __exit annotation of
qdio_remove_perf_stats() so it may be used outside an exit section.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 drivers/s390/cio/qdio_perf.c  | 2 +-
 drivers/s390/cio/qdio_setup.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/cio/qdio_perf.c b/drivers/s390/cio/qdio_perf.c
index ea01b85b1cc9..ec5c4a414235 100644
--- a/drivers/s390/cio/qdio_perf.c
+++ b/drivers/s390/cio/qdio_perf.c
@@ -142,7 +142,7 @@ int __init qdio_setup_perf_stats(void)
 	return 0;
 }
 
-void __exit qdio_remove_perf_stats(void)
+void qdio_remove_perf_stats(void)
 {
 #ifdef CONFIG_PROC_FS
 	remove_proc_entry("qdio_perf", NULL);
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 56fdd57ba192..1bd2a208db28 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -515,7 +515,7 @@ int __init qdio_setup_init(void)
 	return 0;
 }
 
-void __exit qdio_setup_exit(void)
+void qdio_setup_exit(void)
 {
 	kmem_cache_destroy(qdio_q_cache);
 }
-- 
cgit v1.2.3-59-g8ed1b


From 1378ee9b67298176edbcec0ab87b38e913d76ab9 Mon Sep 17 00:00:00 2001
From: Cornelia Huck <cornelia.huck@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:21 +0200
Subject: [S390] cio: Include linux/string.h in schid.h.

schid.h needs string.h for memset and memcmp.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 include/asm-s390/schid.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/asm-s390/schid.h b/include/asm-s390/schid.h
index 7bdc0fe15691..825503cf3dc2 100644
--- a/include/asm-s390/schid.h
+++ b/include/asm-s390/schid.h
@@ -11,6 +11,7 @@ struct subchannel_id {
 } __attribute__ ((packed, aligned(4)));
 
 #ifdef __KERNEL__
+#include <linux/string.h>
 
 /* Helper function for sane state of pre-allocated subchannel_id. */
 static inline void
-- 
cgit v1.2.3-59-g8ed1b


From 26f746f3e3bb44b37a894318aa8e808b914ad663 Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:22 +0200
Subject: [S390] virtio console: fix section mismatch warning.

Fix these two false positive warnings:

WARNING: vmlinux.o(.text+0x2e1cc4): Section mismatch in reference from the function s390_virtio_console_init() to the function .init.text:early_put_chars()
The function s390_virtio_console_init() references
the function __init early_put_chars().
This is often because s390_virtio_console_init lacks a __init
annotation or the annotation of early_put_chars is wrong.

WARNING: vmlinux.o(.text+0x2e1cd0): Section mismatch in reference from the function s390_virtio_console_init() to the function .init.text:virtio_cons_early_init()
The function s390_virtio_console_init() references
the function __init virtio_cons_early_init().
This is often because s390_virtio_console_init lacks a __init
annotation or the annotation of virtio_cons_early_init is wrong.

Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 drivers/s390/kvm/kvm_virtio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 79954bd6bfa5..292b60da6dc7 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -352,7 +352,7 @@ static __init int early_put_chars(u32 vtermno, const char *buf, int count)
 	return len;
 }
 
-void s390_virtio_console_init(void)
+void __init s390_virtio_console_init(void)
 {
 	virtio_cons_early_init(early_put_chars);
 }
-- 
cgit v1.2.3-59-g8ed1b


From fc7e1e4b1ca69109d0f694e47ef2328dcb0ebe6e Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:23 +0200
Subject: [S390] dont use kthread for smp_rescan_cpus().

Since git commit 3da1c84c00c7e5fa8348336bd8c342f9128b0f14
"workqueues: make get_online_cpus() useable for work->func()"
it is safe to call get_online_cpus() from workqueue context.
So remove the kthread workaround again.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 drivers/s390/char/sclp_config.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c
index fff4ff485d9b..4cebd6ee6d27 100644
--- a/drivers/s390/char/sclp_config.c
+++ b/drivers/s390/char/sclp_config.c
@@ -8,7 +8,6 @@
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/cpu.h>
-#include <linux/kthread.h>
 #include <linux/sysdev.h>
 #include <linux/workqueue.h>
 #include <asm/smp.h>
@@ -41,19 +40,9 @@ static void sclp_cpu_capability_notify(struct work_struct *work)
 	put_online_cpus();
 }
 
-static int sclp_cpu_kthread(void *data)
-{
-	smp_rescan_cpus();
-	return 0;
-}
-
 static void __ref sclp_cpu_change_notify(struct work_struct *work)
 {
-	/* Can't call smp_rescan_cpus() from  workqueue context since it may
-	 * deadlock in case of cpu hotplug. So we have to create a kernel
-	 * thread in order to call it.
-	 */
-	kthread_run(sclp_cpu_kthread, NULL, "cpu_rescan");
+	smp_rescan_cpus();
 }
 
 static void sclp_conf_receiver_fn(struct evbuf_header *evbuf)
-- 
cgit v1.2.3-59-g8ed1b


From ab4227cb2d936886069ef1056c02500d05beb15d Mon Sep 17 00:00:00 2001
From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Fri, 1 Aug 2008 16:39:24 +0200
Subject: [S390] qeth: avoid use of include/asm-s390

The planned move of include/asm-s390 to arch/s390/include/asm
requires that all includes for asm headers use include/asm and
not include/asm-s390.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 drivers/s390/net/qeth_core_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 7a5549919717..bd420d1b9a0d 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -19,8 +19,8 @@
 #include <linux/mii.h>
 #include <linux/kthread.h>
 
-#include <asm-s390/ebcdic.h>
-#include <asm-s390/io.h>
+#include <asm/ebcdic.h>
+#include <asm/io.h>
 #include <asm/s390_rdev.h>
 
 #include "qeth_core.h"
-- 
cgit v1.2.3-59-g8ed1b