Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into common/serial-rework

Conflicts: arch/sh/kernel/cpu/sh2/setup-sh7619.c arch/sh/kernel/cpu/sh2a/setup-mxg.c arch/sh/kernel/cpu/sh2a/setup-sh7201.c arch/sh/kernel/cpu/sh2a/setup-sh7203.c arch/sh/kernel/cpu/sh2a/setup-sh7206.c arch/sh/kernel/cpu/sh3/setup-sh7705.c arch/sh/kernel/cpu/sh3/setup-sh770x.c arch/sh/kernel/cpu/sh3/setup-sh7710.c arch/sh/kernel/cpu/sh3/setup-sh7720.c arch/sh/kernel/cpu/sh4/setup-sh4-202.c arch/sh/kernel/cpu/sh4/setup-sh7750.c arch/sh/kernel/cpu/sh4/setup-sh7760.c arch/sh/kernel/cpu/sh4a/setup-sh7343.c arch/sh/kernel/cpu/sh4a/setup-sh7366.c arch/sh/kernel/cpu/sh4a/setup-sh7722.c arch/sh/kernel/cpu/sh4a/setup-sh7723.c arch/sh/kernel/cpu/sh4a/setup-sh7724.c arch/sh/kernel/cpu/sh4a/setup-sh7763.c arch/sh/kernel/cpu/sh4a/setup-sh7770.c arch/sh/kernel/cpu/sh4a/setup-sh7780.c arch/sh/kernel/cpu/sh4a/setup-sh7785.c arch/sh/kernel/cpu/sh4a/setup-sh7786.c arch/sh/kernel/cpu/sh4a/setup-shx3.c arch/sh/kernel/cpu/sh5/setup-sh5.c drivers/serial/sh-sci.c drivers/serial/sh-sci.h include/linux/serial_sci.h
author: Paul Mundt <lethal@linux-sh.org> 2011-01-13 15:06:28 +0900
committer: Paul Mundt <lethal@linux-sh.org> 2011-01-13 15:06:28 +0900
commit: f43dc23d5ea91fca257be02138a255f02d98e806 (patch)
tree: b29722f6e965316e90ac97abf79923ced250dc21 /arch/um
parent: f8e53553f452dcbf67cb89c8cba63a1cd6eb4cc0 (diff)
parent: 4162cf64973df51fc885825bc9ca4d055891c49f (diff)
74 files changed, 521 insertions, 867 deletions
diff --git a/arch/um/.gitignore b/arch/um/.gitignore
new file mode 100644
index 00000000000..a73d3a1cc74
--- /dev/null
+++ b/arch/um/.gitignore
@@ -0,0 +1,3 @@
+kernel/config.c
+kernel/config.tmp
+kernel/vmlinux.lds
diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
index 0d207e73a75..049d048b070 100644
--- a/arch/um/Kconfig.common
+++ b/arch/um/Kconfig.common
@@ -19,8 +19,6 @@ config MMU
 config NO_IOMEM
 	def_bool y
 
-mainmenu "Linux/Usermode Kernel Configuration"
-
 config ISA
 	bool
 
@@ -55,10 +53,6 @@ config GENERIC_BUG
 	default y
 	depends on BUG
 
-config GENERIC_TIME
-	bool
-	default y
-
 config GENERIC_CLOCKEVENTS
 	bool
 	default y
diff --git a/arch/um/Kconfig.um b/arch/um/Kconfig.um
index ec2b8da1aba..50d6aa20c35 100644
--- a/arch/um/Kconfig.um
+++ b/arch/um/Kconfig.um
@@ -120,6 +120,9 @@ config SMP
 
 	  If you don't know what to do, say N.
 
+config GENERIC_HARDIRQS_NO__DO_IRQ
+	def_bool y
+
 config NR_CPUS
 	int "Maximum number of CPUs (2-32)"
 	range 2 32
@@ -147,3 +150,6 @@ config KERNEL_STACK_ORDER
 	  This option determines the size of UML kernel stacks.  They will
 	  be 1 << order pages.  The default is OK unless you're running Valgrind
 	  on UML, in which case, set this to 3.
+
+config NO_DMA
+	def_bool y
diff --git a/arch/um/Makefile b/arch/um/Makefile
index 0728def3223..fab8121d2b3 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -96,11 +96,10 @@ CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,)
 	$(call cc-option, -fno-stack-protector,) \
 	$(call cc-option, -fno-stack-protector-all,)
 
-CONFIG_KERNEL_STACK_ORDER ?= 2
-STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
-
-CPPFLAGS_vmlinux.lds = -U$(SUBARCH) -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
-	-DELF_FORMAT="$(ELF_FORMAT)" -DKERNEL_STACK_SIZE=$(STACK_SIZE)
+# Options used by linker script
+export LDS_START      := $(START)
+export LDS_ELF_ARCH   := $(ELF_ARCH)
+export LDS_ELF_FORMAT := $(ELF_FORMAT)
 
 # The wrappers will select whether using "malloc" or the kernel allocator.
 LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
@@ -150,6 +149,6 @@ $(SHARED_HEADERS)/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s
 
 $(SHARED_HEADERS)/kern_constants.h:
 	$(Q)mkdir -p $(dir $@)
-	$(Q)echo '#include "../../../../include/asm/asm-offsets.h"' >$@
+	$(Q)echo '#include "../../../../include/generated/asm-offsets.h"' >$@
 
 export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS HEADER_ARCH DEV_NULL_PATH
diff --git a/arch/um/defconfig b/arch/um/defconfig
index 6bd456f96f9..564f3de65b4 100644
--- a/arch/um/defconfig
+++ b/arch/um/defconfig
@@ -566,7 +566,6 @@ CONFIG_CRC32=m
 # CONFIG_CRC7 is not set
 # CONFIG_LIBCRC32C is not set
 CONFIG_PLIST=y
-CONFIG_HAS_DMA=y
 
 #
 # SCSI device support
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 6e51424745a..25e1965df7c 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -210,9 +210,9 @@ void free_irqs(void)
 	list_for_each(ele, &list) {
 		chan = list_entry(ele, struct chan, free_list);
 
-		if (chan->input)
+		if (chan->input && chan->enabled)
 			free_irq(chan->line->driver->read_irq, chan);
-		if (chan->output)
+		if (chan->output && chan->enabled)
 			free_irq(chan->line->driver->write_irq, chan);
 		chan->enabled = 0;
 	}
@@ -231,9 +231,9 @@ static void close_one_chan(struct chan *chan, int delay_free_irq)
 		spin_unlock_irqrestore(&irqs_to_free_lock, flags);
 	}
 	else {
-		if (chan->input)
+		if (chan->input && chan->enabled)
 			free_irq(chan->line->driver->read_irq, chan);
-		if (chan->output)
+		if (chan->output && chan->enabled)
 			free_irq(chan->line->driver->write_irq, chan);
 		chan->enabled = 0;
 	}
diff --git a/arch/um/drivers/harddog_kern.c b/arch/um/drivers/harddog_kern.c
index d332503fa1b..2d0266d0254 100644
--- a/arch/um/drivers/harddog_kern.c
+++ b/arch/um/drivers/harddog_kern.c
@@ -42,7 +42,7 @@
 #include <linux/miscdevice.h>
 #include <linux/watchdog.h>
 #include <linux/reboot.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/init.h>
 #include <linux/spinlock.h>
 #include <asm/uaccess.h>
@@ -50,6 +50,7 @@
 
 MODULE_LICENSE("GPL");
 
+static DEFINE_MUTEX(harddog_mutex);
 static DEFINE_SPINLOCK(lock);
 static int timer_alive;
 static int harddog_in_fd = -1;
@@ -66,7 +67,7 @@ static int harddog_open(struct inode *inode, struct file *file)
 	int err = -EBUSY;
 	char *sock = NULL;
 
-	lock_kernel();
+	mutex_lock(&harddog_mutex);
 	spin_lock(&lock);
 	if(timer_alive)
 		goto err;
@@ -83,11 +84,11 @@ static int harddog_open(struct inode *inode, struct file *file)
 
 	timer_alive = 1;
 	spin_unlock(&lock);
-	unlock_kernel();
+	mutex_unlock(&harddog_mutex);
 	return nonseekable_open(inode, file);
 err:
 	spin_unlock(&lock);
-	unlock_kernel();
+	mutex_unlock(&harddog_mutex);
 	return err;
 }
 
@@ -124,8 +125,8 @@ static ssize_t harddog_write(struct file *file, const char __user *data, size_t
 	return 0;
 }
 
-static int harddog_ioctl(struct inode *inode, struct file *file,
-			 unsigned int cmd, unsigned long arg)
+static int harddog_ioctl_unlocked(struct file *file,
+				  unsigned int cmd, unsigned long arg)
 {
 	void __user *argp= (void __user *)arg;
 	static struct watchdog_info ident = {
@@ -148,12 +149,25 @@ static int harddog_ioctl(struct inode *inode, struct file *file,
 	}
 }
 
+static long harddog_ioctl(struct file *file,
+			  unsigned int cmd, unsigned long arg)
+{
+	long ret;
+
+	mutex_lock(&harddog_mutex);
+	ret = harddog_ioctl_unlocked(file, cmd, arg);
+	mutex_unlock(&harddog_mutex);
+
+	return ret;
+}
+
 static const struct file_operations harddog_fops = {
 	.owner		= THIS_MODULE,
 	.write		= harddog_write,
-	.ioctl		= harddog_ioctl,
+	.unlocked_ioctl	= harddog_ioctl,
 	.open		= harddog_open,
 	.release	= harddog_release,
+	.llseek		= no_llseek,
 };
 
 static struct miscdevice harddog_miscdev = {
diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c
index 368219cc236..f9f6a4e2059 100644
--- a/arch/um/drivers/hostaudio_kern.c
+++ b/arch/um/drivers/hostaudio_kern.c
@@ -8,6 +8,7 @@
 #include "linux/slab.h"
 #include "linux/sound.h"
 #include "linux/soundcard.h"
+#include "linux/mutex.h"
 #include "asm/uaccess.h"
 #include "init.h"
 #include "os.h"
@@ -39,6 +40,11 @@ static char *mixer = HOSTAUDIO_DEV_MIXER;
 "    This is used to specify the host mixer device to the hostaudio driver.\n"\
 "    The default is \"" HOSTAUDIO_DEV_MIXER "\".\n\n"
 
+module_param(dsp, charp, 0644);
+MODULE_PARM_DESC(dsp, DSP_HELP);
+module_param(mixer, charp, 0644);
+MODULE_PARM_DESC(mixer, MIXER_HELP);
+
 #ifndef MODULE
 static int set_dsp(char *name, int *add)
 {
@@ -55,17 +61,10 @@ static int set_mixer(char *name, int *add)
 }
 
 __uml_setup("mixer=", set_mixer, "mixer=<mixer device>\n" MIXER_HELP);
-
-#else /*MODULE*/
-
-module_param(dsp, charp, 0644);
-MODULE_PARM_DESC(dsp, DSP_HELP);
-
-module_param(mixer, charp, 0644);
-MODULE_PARM_DESC(mixer, MIXER_HELP);
-
 #endif
 
+static DEFINE_MUTEX(hostaudio_mutex);
+
 /* /dev/dsp file operations */
 
 static ssize_t hostaudio_read(struct file *file, char __user *buffer,
@@ -136,7 +135,7 @@ static unsigned int hostaudio_poll(struct file *file,
 	return mask;
 }
 
-static int hostaudio_ioctl(struct inode *inode, struct file *file,
+static long hostaudio_ioctl(struct file *file,
 			   unsigned int cmd, unsigned long arg)
 {
 	struct hostaudio_state *state = file->private_data;
@@ -186,7 +185,9 @@ static int hostaudio_open(struct inode *inode, struct file *file)
 	int ret;
 
 #ifdef DEBUG
+	kparam_block_sysfs_write(dsp);
 	printk(KERN_DEBUG "hostaudio: open called (host: %s)\n", dsp);
+	kparam_unblock_sysfs_write(dsp);
 #endif
 
 	state = kmalloc(sizeof(struct hostaudio_state), GFP_KERNEL);
@@ -198,7 +199,12 @@ static int hostaudio_open(struct inode *inode, struct file *file)
 	if (file->f_mode & FMODE_WRITE)
 		w = 1;
 
+	kparam_block_sysfs_write(dsp);
+	mutex_lock(&hostaudio_mutex);
 	ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0);
+	mutex_unlock(&hostaudio_mutex);
+	kparam_unblock_sysfs_write(dsp);
+
 	if (ret < 0) {
 		kfree(state);
 		return ret;
@@ -223,7 +229,7 @@ static int hostaudio_release(struct inode *inode, struct file *file)
 
 /* /dev/mixer file operations */
 
-static int hostmixer_ioctl_mixdev(struct inode *inode, struct file *file,
+static long hostmixer_ioctl_mixdev(struct file *file,
 				  unsigned int cmd, unsigned long arg)
 {
 	struct hostmixer_state *state = file->private_data;
@@ -254,11 +260,17 @@ static int hostmixer_open_mixdev(struct inode *inode, struct file *file)
 	if (file->f_mode & FMODE_WRITE)
 		w = 1;
 
+	kparam_block_sysfs_write(mixer);
+	mutex_lock(&hostaudio_mutex);
 	ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0);
+	mutex_unlock(&hostaudio_mutex);
+	kparam_unblock_sysfs_write(mixer);
 
 	if (ret < 0) {
+		kparam_block_sysfs_write(dsp);
 		printk(KERN_ERR "hostaudio_open_mixdev failed to open '%s', "
 		       "err = %d\n", dsp, -ret);
+		kparam_unblock_sysfs_write(dsp);
 		kfree(state);
 		return ret;
 	}
@@ -289,7 +301,7 @@ static const struct file_operations hostaudio_fops = {
 	.read           = hostaudio_read,
 	.write          = hostaudio_write,
 	.poll           = hostaudio_poll,
-	.ioctl          = hostaudio_ioctl,
+	.unlocked_ioctl	= hostaudio_ioctl,
 	.mmap           = NULL,
 	.open           = hostaudio_open,
 	.release        = hostaudio_release,
@@ -298,7 +310,7 @@ static const struct file_operations hostaudio_fops = {
 static const struct file_operations hostmixer_fops = {
 	.owner          = THIS_MODULE,
 	.llseek         = no_llseek,
-	.ioctl          = hostmixer_ioctl_mixdev,
+	.unlocked_ioctl	= hostmixer_ioctl_mixdev,
 	.open           = hostmixer_open_mixdev,
 	.release        = hostmixer_release,
 };
@@ -314,8 +326,10 @@ MODULE_LICENSE("GPL");
 
 static int __init hostaudio_init_module(void)
 {
+	__kernel_param_lock();
 	printk(KERN_INFO "UML Audio Relay (host dsp = %s, host mixer = %s)\n",
 	       dsp, mixer);
+	__kernel_param_unlock();
 
 	module_data.dev_audio = register_sound_dsp(&hostaudio_fops, -1);
 	if (module_data.dev_audio < 0) {
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 14a102e877d..1664cce7b0a 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -5,6 +5,8 @@
 
 #include "linux/irqreturn.h"
 #include "linux/kd.h"
+#include "linux/sched.h"
+#include "linux/slab.h"
 #include "chan_kern.h"
 #include "irq_kern.h"
 #include "irq_user.h"
@@ -17,10 +19,9 @@ static irqreturn_t line_interrupt(int irq, void *data)
 {
 	struct chan *chan = data;
 	struct line *line = chan->line;
-	struct tty_struct *tty = line->tty;
 
 	if (line)
-		chan_interrupt(&line->chan_list, &line->task, tty, irq);
+		chan_interrupt(&line->chan_list, &line->task, line->tty, irq);
 	return IRQ_HANDLED;
 }
 
@@ -726,6 +727,9 @@ struct winch {
 
 static void free_winch(struct winch *winch, int free_irq_ok)
 {
+	if (free_irq_ok)
+		free_irq(WINCH_IRQ, winch);
+
 	list_del(&winch->list);
 
 	if (winch->pid != -1)
@@ -734,8 +738,6 @@ static void free_winch(struct winch *winch, int free_irq_ok)
 		os_close_file(winch->fd);
 	if (winch->stack != 0)
 		free_stack(winch->stack, 0);
-	if (free_irq_ok)
-		free_irq(WINCH_IRQ, winch);
 	kfree(winch);
 }
 
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index e14629c87de..975613b23dc 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -6,6 +6,7 @@
 
 #include <linux/console.h>
 #include <linux/ctype.h>
+#include <linux/string.h>
 #include <linux/interrupt.h>
 #include <linux/list.h>
 #include <linux/mm.h>
@@ -124,50 +125,36 @@ void mconsole_log(struct mc_request *req)
 void mconsole_proc(struct mc_request *req)
 {
 	struct nameidata nd;
-	struct file_system_type *proc;
-	struct super_block *super;
+	struct vfsmount *mnt = current->nsproxy->pid_ns->proc_mnt;
 	struct file *file;
 	int n, err;
 	char *ptr = req->request.data, *buf;
+	mm_segment_t old_fs = get_fs();
 
 	ptr += strlen("proc");
-	while (isspace(*ptr)) ptr++;
+	ptr = skip_spaces(ptr);
 
-	proc = get_fs_type("proc");
-	if (proc == NULL) {
-		mconsole_reply(req, "procfs not registered", 1, 0);
+	err = vfs_path_lookup(mnt->mnt_root, mnt, ptr, LOOKUP_FOLLOW, &nd);
+	if (err) {
+		mconsole_reply(req, "Failed to look up file", 1, 0);
 		goto out;
 	}
 
-	super = (*proc->get_sb)(proc, 0, NULL, NULL);
-	put_filesystem(proc);
-	if (super == NULL) {
-		mconsole_reply(req, "Failed to get procfs superblock", 1, 0);
+	err = may_open(&nd.path, MAY_READ, O_RDONLY);
+	if (result) {
+		mconsole_reply(req, "Failed to open file", 1, 0);
+		path_put(&nd.path);
 		goto out;
 	}
-	up_write(&super->s_umount);
-
-	nd.path.dentry = super->s_root;
-	nd.path.mnt = NULL;
-	nd.flags = O_RDONLY + 1;
-	nd.last_type = LAST_ROOT;
-
-	/* START: it was experienced that the stability problems are closed
-	 * if commenting out these two calls + the below read cycle. To
-	 * make UML crash again, it was enough to readd either one.*/
-	err = link_path_walk(ptr, &nd);
-	if (err) {
-		mconsole_reply(req, "Failed to look up file", 1, 0);
-		goto out_kill;
-	}
 
 	file = dentry_open(nd.path.dentry, nd.path.mnt, O_RDONLY,
 			   current_cred());
+	err = PTR_ERR(file);
 	if (IS_ERR(file)) {
 		mconsole_reply(req, "Failed to open file", 1, 0);
-		goto out_kill;
+		path_put(&nd.path);
+		goto out;
 	}
-	/*END*/
 
 	buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
 	if (buf == NULL) {
@@ -175,10 +162,13 @@ void mconsole_proc(struct mc_request *req)
 		goto out_fput;
 	}
 
-	if ((file->f_op != NULL) && (file->f_op->read != NULL)) {
+	if (file->f_op->read) {
 		do {
-			n = (*file->f_op->read)(file, buf, PAGE_SIZE - 1,
-						&file->f_pos);
+			loff_t pos;
+			set_fs(KERNEL_DS);
+			n = vfs_read(file, buf, PAGE_SIZE - 1, &pos);
+			file_pos_write(file, pos);
+			set_fs(old_fs);
 			if (n >= 0) {
 				buf[n] = '\0';
 				mconsole_reply(req, buf, 0, (n > 0));
@@ -196,8 +186,6 @@ void mconsole_proc(struct mc_request *req)
 	kfree(buf);
  out_fput:
 	fput(file);
- out_kill:
-	deactivate_super(super);
  out: ;
 }
 #endif
@@ -212,8 +200,7 @@ void mconsole_proc(struct mc_request *req)
 	char *ptr = req->request.data;
 
 	ptr += strlen("proc");
-	while (isspace(*ptr))
-		ptr++;
+	ptr = skip_spaces(ptr);
 	snprintf(path, sizeof(path), "/proc/%s", ptr);
 
 	fd = sys_open(path, 0, 0);
@@ -560,8 +547,7 @@ void mconsole_config(struct mc_request *req)
 	int err;
 
 	ptr += strlen("config");
-	while (isspace(*ptr))
-		ptr++;
+	ptr = skip_spaces(ptr);
 	dev = mconsole_find_dev(ptr);
 	if (dev == NULL) {
 		mconsole_reply(req, "Bad configuration option", 1, 0);
@@ -588,7 +574,7 @@ void mconsole_remove(struct mc_request *req)
 	int err, start, end, n;
 
 	ptr += strlen("remove");
-	while (isspace(*ptr)) ptr++;
+	ptr = skip_spaces(ptr);
 	dev = mconsole_find_dev(ptr);
 	if (dev == NULL) {
 		mconsole_reply(req, "Bad remove option", 1, 0);
@@ -704,7 +690,7 @@ static void with_console(struct mc_request *req, void (*proc)(void *),
 static void sysrq_proc(void *arg)
 {
 	char *op = arg;
-	handle_sysrq(*op, NULL);
+	handle_sysrq(*op);
 }
 
 void mconsole_sysrq(struct mc_request *req)
@@ -712,7 +698,7 @@ void mconsole_sysrq(struct mc_request *req)
 	char *ptr = req->request.data;
 
 	ptr += strlen("sysrq");
-	while (isspace(*ptr)) ptr++;
+	ptr = skip_spaces(ptr);
 
 	/*
 	 * With 'b', the system will shut down without a chance to reply,
@@ -757,8 +743,7 @@ void mconsole_stack(struct mc_request *req)
 	 */
 
 	ptr += strlen("stack");
-	while (isspace(*ptr))
-		ptr++;
+	ptr = skip_spaces(ptr);
 
 	/*
 	 * Should really check for multiple pids or reject bad args here
@@ -833,8 +818,8 @@ static int __init mconsole_init(void)
 
 __initcall(mconsole_init);
 
-static int write_proc_mconsole(struct file *file, const char __user *buffer,
-			       unsigned long count, void *data)
+static ssize_t mconsole_proc_write(struct file *file,
+		const char __user *buffer, size_t count, loff_t *pos)
 {
 	char *buf;
 
@@ -855,6 +840,12 @@ static int write_proc_mconsole(struct file *file, const char __user *buffer,
 	return count;
 }
 
+static const struct file_operations mconsole_proc_fops = {
+	.owner		= THIS_MODULE,
+	.write		= mconsole_proc_write,
+	.llseek		= noop_llseek,
+};
+
 static int create_proc_mconsole(void)
 {
 	struct proc_dir_entry *ent;
@@ -862,15 +853,12 @@ static int create_proc_mconsole(void)
 	if (notify_socket == NULL)
 		return 0;
 
-	ent = create_proc_entry("mconsole", S_IFREG | 0200, NULL);
+	ent = proc_create("mconsole", 0200, NULL, &mconsole_proc_fops);
 	if (ent == NULL) {
 		printk(KERN_INFO "create_proc_mconsole : create_proc_entry "
 		       "failed\n");
 		return 0;
 	}
-
-	ent->read_proc = NULL;
-	ent->write_proc = write_proc_mconsole;
 	return 0;
 }
 
diff --git a/arch/um/drivers/mmapper_kern.c b/arch/um/drivers/mmapper_kern.c
index eb240323c40..8501e7d0015 100644
--- a/arch/um/drivers/mmapper_kern.c
+++ b/arch/um/drivers/mmapper_kern.c
@@ -16,7 +16,7 @@
 #include <linux/miscdevice.h>
 #include <linux/module.h>
 #include <linux/mm.h>
-#include <linux/smp_lock.h>
+
 #include <asm/uaccess.h>
 #include "mem_user.h"
 
@@ -46,8 +46,7 @@ static ssize_t mmapper_write(struct file *file, const char __user *buf,
 	return count;
 }
 
-static int mmapper_ioctl(struct inode *inode, struct file *file,
-			 unsigned int cmd, unsigned long arg)
+static long mmapper_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	return -ENOIOCTLCMD;
 }
@@ -78,7 +77,6 @@ out:
 
 static int mmapper_open(struct inode *inode, struct file *file)
 {
-	cycle_kernel_lock();
 	return 0;
 }
 
@@ -91,10 +89,11 @@ static const struct file_operations mmapper_fops = {
 	.owner		= THIS_MODULE,
 	.read		= mmapper_read,
 	.write		= mmapper_write,
-	.ioctl		= mmapper_ioctl,
+	.unlocked_ioctl	= mmapper_ioctl,
 	.mmap		= mmapper_mmap,
 	.open		= mmapper_open,
 	.release	= mmapper_release,
+	.llseek		= default_llseek,
 };
 
 /*
@@ -115,18 +114,16 @@ static int __init mmapper_init(void)
 	v_buf = (char *) find_iomem("mmapper", &mmapper_size);
 	if (mmapper_size == 0) {
 		printk(KERN_ERR "mmapper_init - find_iomem failed\n");
-		goto out;
+		return -ENODEV;
 	}
+	p_buf = __pa(v_buf);
 
 	err = misc_register(&mmapper_dev);
 	if (err) {
 		printk(KERN_ERR "mmapper - misc_register failed, err = %d\n",
 		       err);
-		goto out;
+		return err;;
 	}
-
-	p_buf = __pa(v_buf);
-out:
 	return 0;
 }
 
diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index 3b44b47c7e1..47d0c37897d 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -16,6 +16,7 @@
 #include <linux/platform_device.h>
 #include <linux/rtnetlink.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <linux/spinlock.h>
 #include "init.h"
 #include "irq_kern.h"
@@ -24,11 +25,6 @@
 #include "net_kern.h"
 #include "net_user.h"
 
-static inline void set_ether_mac(struct net_device *dev, unsigned char *addr)
-{
-	memcpy(dev->dev_addr, addr, ETH_ALEN);
-}
-
 #define DRIVER_NAME "uml-netdev"
 
 static DEFINE_SPINLOCK(opened_lock);
@@ -245,7 +241,7 @@ static int uml_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	dev_kfree_skb(skb);
 
-	return 0;
+	return NETDEV_TX_OK;
 }
 
 static void uml_net_set_multicast_list(struct net_device *dev)
@@ -259,18 +255,6 @@ static void uml_net_tx_timeout(struct net_device *dev)
 	netif_wake_queue(dev);
 }
 
-static int uml_net_set_mac(struct net_device *dev, void *addr)
-{
-	struct uml_net_private *lp = netdev_priv(dev);
-	struct sockaddr *hwaddr = addr;
-
-	spin_lock_irq(&lp->lock);
-	set_ether_mac(dev, hwaddr->sa_data);
-	spin_unlock_irq(&lp->lock);
-
-	return 0;
-}
-
 static int uml_net_change_mtu(struct net_device *dev, int new_mtu)
 {
 	dev->mtu = new_mtu;
@@ -285,7 +269,7 @@ static void uml_net_get_drvinfo(struct net_device *dev,
 	strcpy(info->version, "42");
 }
 
-static struct ethtool_ops uml_net_ethtool_ops = {
+static const struct ethtool_ops uml_net_ethtool_ops = {
 	.get_drvinfo	= uml_net_get_drvinfo,
 	.get_link	= ethtool_op_get_link,
 };
@@ -377,9 +361,8 @@ static const struct net_device_ops uml_netdev_ops = {
 	.ndo_start_xmit 	= uml_net_start_xmit,
 	.ndo_set_multicast_list = uml_net_set_multicast_list,
 	.ndo_tx_timeout 	= uml_net_tx_timeout,
-	.ndo_set_mac_address	= uml_net_set_mac,
+	.ndo_set_mac_address	= eth_mac_addr,
 	.ndo_change_mtu 	= uml_net_change_mtu,
-	.ndo_set_mac_address 	= eth_mac_addr,
 	.ndo_validate_addr	= eth_validate_addr,
 };
 
@@ -477,7 +460,8 @@ static void eth_configure(int n, void *init, char *mac,
 	    ((*transport->user->init)(&lp->user, dev) != 0))
 		goto out_unregister;
 
-	set_ether_mac(dev, device->mac);
+	/* don't use eth_mac_addr, it will not work here */
+	memcpy(dev->dev_addr, device->mac, ETH_ALEN);
 	dev->mtu = transport->user->mtu;
 	dev->netdev_ops = &uml_netdev_ops;
 	dev->ethtool_ops = &uml_net_ethtool_ops;
@@ -533,7 +517,7 @@ static int eth_parse(char *str, int *index_out, char **str_out,
 		     char **error_out)
 {
 	char *end;
-	int n, err = -EINVAL;;
+	int n, err = -EINVAL;
 
 	n = simple_strtoul(str, &end, 0);
 	if (end == str) {
diff --git a/arch/um/drivers/port_kern.c b/arch/um/drivers/port_kern.c
index 19930081d3d..a11573be096 100644
--- a/arch/um/drivers/port_kern.c
+++ b/arch/um/drivers/port_kern.c
@@ -7,6 +7,8 @@
 #include "linux/interrupt.h"
 #include "linux/list.h"
 #include "linux/mutex.h"
+#include "linux/slab.h"
+#include "linux/workqueue.h"
 #include "asm/atomic.h"
 #include "init.h"
 #include "irq_kern.h"
diff --git a/arch/um/drivers/random.c b/arch/um/drivers/random.c
index 6eabb7022a2..981085a93f3 100644
--- a/arch/um/drivers/random.c
+++ b/arch/um/drivers/random.c
@@ -7,7 +7,6 @@
  * of the GNU General Public License, incorporated herein by reference.
  */
 #include <linux/sched.h>
-#include <linux/smp_lock.h>
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/interrupt.h>
@@ -34,8 +33,6 @@ static DECLARE_WAIT_QUEUE_HEAD(host_read_wait);
 
 static int rng_dev_open (struct inode *inode, struct file *filp)
 {
-	cycle_kernel_lock();
-
 	/* enforce read-only access to this chrdev */
 	if ((filp->f_mode & FMODE_READ) == 0)
 		return -EINVAL;
@@ -103,6 +100,7 @@ static const struct file_operations rng_chrdev_ops = {
 	.owner		= THIS_MODULE,
 	.open		= rng_dev_open,
 	.read		= rng_dev_read,
+	.llseek		= noop_llseek,
 };
 
 /* rng_init shouldn't be called more than once at boot time */
diff --git a/arch/um/drivers/slip_kern.c b/arch/um/drivers/slip_kern.c
index 5ec17563142..dd2aadc14af 100644
--- a/arch/um/drivers/slip_kern.c
+++ b/arch/um/drivers/slip_kern.c
@@ -30,7 +30,6 @@ static void slip_init(struct net_device *dev, void *data)
 
 	slip_proto_init(&spri->slip);
 
-	dev->init = NULL;
 	dev->hard_header_len = 0;
 	dev->header_ops = NULL;
 	dev->addr_len = 0;
diff --git a/arch/um/drivers/slirp_kern.c b/arch/um/drivers/slirp_kern.c
index f15a6e7654f..e376284f0fb 100644
--- a/arch/um/drivers/slirp_kern.c
+++ b/arch/um/drivers/slirp_kern.c
@@ -32,7 +32,6 @@ void slirp_init(struct net_device *dev, void *data)
 
 	slip_proto_init(&spri->slip);
 
-	dev->init = NULL;
 	dev->hard_header_len = 0;
 	dev->header_ops = NULL;
 	dev->addr_len = 0;
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 8f05d4d9da1..ba4a98ba39c 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -27,10 +27,13 @@
 #include "linux/init.h"
 #include "linux/cdrom.h"
 #include "linux/proc_fs.h"
+#include "linux/seq_file.h"
 #include "linux/ctype.h"
 #include "linux/capability.h"
 #include "linux/mm.h"
+#include "linux/slab.h"
 #include "linux/vmalloc.h"
+#include "linux/mutex.h"
 #include "linux/blkpg.h"
 #include "linux/genhd.h"
 #include "linux/spinlock.h"
@@ -97,6 +100,7 @@ static inline void ubd_set_bit(__u64 bit, unsigned char *data)
 #define DRIVER_NAME "uml-blkdev"
 
 static DEFINE_MUTEX(ubd_lock);
+static DEFINE_MUTEX(ubd_mutex); /* replaces BKL, might not be needed */
 
 static int ubd_open(struct block_device *bdev, fmode_t mode);
 static int ubd_release(struct gendisk *disk, fmode_t mode);
@@ -106,7 +110,7 @@ static int ubd_getgeo(struct block_device *bdev, struct hd_geometry *geo);
 
 #define MAX_DEV (16)
 
-static struct block_device_operations ubd_blops = {
+static const struct block_device_operations ubd_blops = {
         .owner		= THIS_MODULE,
         .open		= ubd_open,
         .release	= ubd_release,
@@ -160,6 +164,7 @@ struct ubd {
 	struct scatterlist sg[MAX_SG];
 	struct request *request;
 	int start_sg, end_sg;
+	sector_t rq_pos;
 };
 
 #define DEFAULT_COW { \
@@ -184,6 +189,7 @@ struct ubd {
 	.request =		NULL, \
 	.start_sg =		0, \
 	.end_sg =		0, \
+	.rq_pos =		0, \
 }
 
 /* Protected by ubd_lock */
@@ -200,23 +206,25 @@ static void make_proc_ide(void)
 	proc_ide = proc_mkdir("ide0", proc_ide_root);
 }
 
-static int proc_ide_read_media(char *page, char **start, off_t off, int count,
-			       int *eof, void *data)
+static int fake_ide_media_proc_show(struct seq_file *m, void *v)
 {
-	int len;
-
-	strcpy(page, "disk\n");
-	len = strlen("disk\n");
-	len -= off;
-	if (len < count){
-		*eof = 1;
-		if (len <= 0) return 0;
-	}
-	else len = count;
-	*start = page + off;
-	return len;
+	seq_puts(m, "disk\n");
+	return 0;
+}
+
+static int fake_ide_media_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, fake_ide_media_proc_show, NULL);
 }
 
+static const struct file_operations fake_ide_media_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= fake_ide_media_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 static void make_ide_entries(const char *dev_name)
 {
 	struct proc_dir_entry *dir, *ent;
@@ -227,11 +235,8 @@ static void make_ide_entries(const char *dev_name)
 	dir = proc_mkdir(dev_name, proc_ide);
 	if(!dir) return;
 
-	ent = create_proc_entry("media", S_IFREG|S_IRUGO, dir);
+	ent = proc_create("media", S_IRUGO, dir, &fake_ide_media_proc_fops);
 	if(!ent) return;
-	ent->data = NULL;
-	ent->read_proc = proc_ide_read_media;
-	ent->write_proc = NULL;
 	snprintf(name, sizeof(name), "ide0/%s", dev_name);
 	proc_symlink(dev_name, proc_ide_root, name);
 }
@@ -747,7 +752,7 @@ static int ubd_open_dev(struct ubd *ubd_dev)
 	ubd_dev->fd = fd;
 
 	if(ubd_dev->cow.file != NULL){
-		blk_queue_max_sectors(ubd_dev->queue, 8 * sizeof(long));
+		blk_queue_max_hw_sectors(ubd_dev->queue, 8 * sizeof(long));
 
 		err = -ENOMEM;
 		ubd_dev->cow.bitmap = vmalloc(ubd_dev->cow.bitmap_len);
@@ -849,7 +854,7 @@ static int ubd_add(int n, char **error_out)
 	}
 	ubd_dev->queue->queuedata = ubd_dev;
 
-	blk_queue_max_hw_segments(ubd_dev->queue, MAX_SG);
+	blk_queue_max_segments(ubd_dev->queue, MAX_SG);
 	err = ubd_disk_register(UBD_MAJOR, ubd_dev->size, n, &ubd_gendisk[n]);
 	if(err){
 		*error_out = "Failed to register device";
@@ -1097,6 +1102,7 @@ static int ubd_open(struct block_device *bdev, fmode_t mode)
 	struct ubd *ubd_dev = disk->private_data;
 	int err = 0;
 
+	mutex_lock(&ubd_mutex);
 	if(ubd_dev->count == 0){
 		err = ubd_open_dev(ubd_dev);
 		if(err){
@@ -1114,7 +1120,8 @@ static int ubd_open(struct block_device *bdev, fmode_t mode)
 	        if(--ubd_dev->count == 0) ubd_close_dev(ubd_dev);
 	        err = -EROFS;
 	}*/
- out:
+out:
+	mutex_unlock(&ubd_mutex);
 	return err;
 }
 
@@ -1122,8 +1129,10 @@ static int ubd_release(struct gendisk *disk, fmode_t mode)
 {
 	struct ubd *ubd_dev = disk->private_data;
 
+	mutex_lock(&ubd_mutex);
 	if(--ubd_dev->count == 0)
 		ubd_close_dev(ubd_dev);
+	mutex_unlock(&ubd_mutex);
 	return 0;
 }
 
@@ -1222,7 +1231,6 @@ static void do_ubd_request(struct request_queue *q)
 {
 	struct io_thread_req *io_req;
 	struct request *req;
-	sector_t sector;
 	int n;
 
 	while(1){
@@ -1233,12 +1241,12 @@ static void do_ubd_request(struct request_queue *q)
 				return;
 
 			dev->request = req;
+			dev->rq_pos = blk_rq_pos(req);
 			dev->start_sg = 0;
 			dev->end_sg = blk_rq_map_sg(q, req, dev->sg);
 		}
 
 		req = dev->request;
-		sector = blk_rq_pos(req);
 		while(dev->start_sg < dev->end_sg){
 			struct scatterlist *sg = &dev->sg[dev->start_sg];
 
@@ -1250,10 +1258,9 @@ static void do_ubd_request(struct request_queue *q)
 				return;
 			}
 			prepare_request(req, io_req,
-					(unsigned long long)sector << 9,
+					(unsigned long long)dev->rq_pos << 9,
 					sg->offset, sg->length, sg_page(sg));
 
-			sector += sg->length >> 9;
 			n = os_write_file(thread_fd, &io_req,
 					  sizeof(struct io_thread_req *));
 			if(n != sizeof(struct io_thread_req *)){
@@ -1266,6 +1273,7 @@ static void do_ubd_request(struct request_queue *q)
 				return;
 			}
 
+			dev->rq_pos += sg->length >> 9;
 			dev->start_sg++;
 		}
 		dev->end_sg = 0;
diff --git a/arch/um/include/asm/arch_hweight.h b/arch/um/include/asm/arch_hweight.h
new file mode 100644
index 00000000000..c656cf443f4
--- /dev/null
+++ b/arch/um/include/asm/arch_hweight.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_UM_HWEIGHT_H
+#define _ASM_UM_HWEIGHT_H
+
+#include <asm-generic/bitops/arch_hweight.h>
+
+#endif
diff --git a/arch/um/include/asm/asm-offsets.h b/arch/um/include/asm/asm-offsets.h
new file mode 100644
index 00000000000..d370ee36a18
--- /dev/null
+++ b/arch/um/include/asm/asm-offsets.h
@@ -0,0 +1 @@
+#include <generated/asm-offsets.h>
diff --git a/arch/um/include/asm/common.lds.S b/arch/um/include/asm/common.lds.S
index cb0248616d4..ac55b9efa1c 100644
--- a/arch/um/include/asm/common.lds.S
+++ b/arch/um/include/asm/common.lds.S
@@ -16,11 +16,7 @@
 
   . = ALIGN(4096);
   .note : { *(.note.*) }
-  __ex_table : {
-	__start___ex_table = .;
-	*(__ex_table)
-	__stop___ex_table = .;
-  }
+  EXCEPTION_TABLE(0)
 
   BUG_TABLE
 
@@ -43,28 +39,17 @@
   }
 	
   .init.setup : {
-	__setup_start = .;
-	*(.init.setup)
-	__setup_end = .;
+	INIT_SETUP(0)
   }
 
-  . = ALIGN(32);
-  .data.percpu : {
-	__per_cpu_start = . ;
-	*(.data.percpu)
-	__per_cpu_end = . ;
-  }
+  PERCPU(32)
 	
   .initcall.init : {
-	__initcall_start = .;
-	INITCALLS
-	__initcall_end = .;
+	INIT_CALLS
   }
 
   .con_initcall.init : {
-	__con_initcall_start = .;
-	*(.con_initcall.init)
-	__con_initcall_end = .;
+	CON_INITCALL
   }
 
   .uml.initcall.init : {
@@ -118,13 +103,6 @@
 
    . = ALIGN(4096);
   .init.ramfs : {
-	__initramfs_start = .;
-	*(.init.ramfs)
-	__initramfs_end = .;
-  }
-
-  /* Sections to be discarded */
-  /DISCARD/ : {
- 	*(.exitcall.exit)
+	INIT_RAM_FS
   }
 
diff --git a/arch/um/include/asm/dma-mapping.h b/arch/um/include/asm/dma-mapping.h
deleted file mode 100644
index 90fc708b320..00000000000
--- a/arch/um/include/asm/dma-mapping.h
+++ /dev/null
@@ -1,128 +0,0 @@
-#ifndef _ASM_DMA_MAPPING_H
-#define _ASM_DMA_MAPPING_H
-
-#include <asm/scatterlist.h>
-
-static inline int
-dma_supported(struct device *dev, u64 mask)
-{
-	BUG();
-	return(0);
-}
-
-static inline int
-dma_set_mask(struct device *dev, u64 dma_mask)
-{
-	BUG();
-	return(0);
-}
-
-static inline void *
-dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
-		   gfp_t flag)
-{
-	BUG();
-	return((void *) 0);
-}
-
-static inline void
-dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
-		  dma_addr_t dma_handle)
-{
-	BUG();
-}
-
-static inline dma_addr_t
-dma_map_single(struct device *dev, void *cpu_addr, size_t size,
-	       enum dma_data_direction direction)
-{
-	BUG();
-	return(0);
-}
-
-static inline void
-dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
-		 enum dma_data_direction direction)
-{
-	BUG();
-}
-
-static inline dma_addr_t
-dma_map_page(struct device *dev, struct page *page,
-	     unsigned long offset, size_t size,
-	     enum dma_data_direction direction)
-{
-	BUG();
-	return(0);
-}
-
-static inline void
-dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
-	       enum dma_data_direction direction)
-{
-	BUG();
-}
-
-static inline int
-dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
-	   enum dma_data_direction direction)
-{
-	BUG();
-	return(0);
-}
-
-static inline void
-dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
-	     enum dma_data_direction direction)
-{
-	BUG();
-}
-
-static inline void
-dma_sync_single(struct device *dev, dma_addr_t dma_handle, size_t size,
-		enum dma_data_direction direction)
-{
-	BUG();
-}
-
-static inline void
-dma_sync_sg(struct device *dev, struct scatterlist *sg, int nelems,
-	    enum dma_data_direction direction)
-{
-	BUG();
-}
-
-#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
-#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-#define dma_is_consistent(d, h) (1)
-
-static inline int
-dma_get_cache_alignment(void)
-{
-	BUG();
-	return(0);
-}
-
-static inline void
-dma_sync_single_range(struct device *dev, dma_addr_t dma_handle,
-		      unsigned long offset, size_t size,
-		      enum dma_data_direction direction)
-{
-	BUG();
-}
-
-static inline void
-dma_cache_sync(struct device *dev, void *vaddr, size_t size,
-	       enum dma_data_direction direction)
-{
-	BUG();
-}
-
-static inline int
-dma_mapping_error(struct device *dev, dma_addr_t dma_handle)
-{
-	BUG();
-	return 0;
-}
-
-#endif
diff --git a/arch/um/include/asm/hardirq.h b/arch/um/include/asm/hardirq.h
index 313ebb8a256..fb3c05a0cbb 100644
--- a/arch/um/include/asm/hardirq.h
+++ b/arch/um/include/asm/hardirq.h
@@ -1,25 +1 @@
-/* (c) 2004 cw@f00f.org, GPLv2 blah blah */
-
-#ifndef __ASM_UM_HARDIRQ_H
-#define __ASM_UM_HARDIRQ_H
-
-#include <linux/threads.h>
-#include <linux/irq.h>
-
-/* NOTE: When SMP works again we might want to make this
- * ____cacheline_aligned or maybe use per_cpu state? --cw */
-typedef struct {
-	unsigned int __softirq_pending;
-} irq_cpustat_t;
-
-#include <linux/irq_cpustat.h>
-
-/* As this would be very strange for UML to get we BUG() after the
- * printk. */
-static inline void ack_bad_irq(unsigned int irq)
-{
-	printk(KERN_ERR "unexpected IRQ %02x\n", irq);
-	BUG();
-}
-
-#endif /* __ASM_UM_HARDIRQ_H */
+#include <asm-generic/hardirq.h>
diff --git a/arch/um/include/asm/mmu_context.h b/arch/um/include/asm/mmu_context.h
index 54f42e8b010..34d813011b7 100644
--- a/arch/um/include/asm/mmu_context.h
+++ b/arch/um/include/asm/mmu_context.h
@@ -35,8 +35,8 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 	unsigned cpu = smp_processor_id();
 
 	if(prev != next){
-		cpu_clear(cpu, prev->cpu_vm_mask);
-		cpu_set(cpu, next->cpu_vm_mask);
+		cpumask_clear_cpu(cpu, mm_cpumask(prev));
+		cpumask_set_cpu(cpu, mm_cpumask(next));
 		if(next != &init_mm)
 			__switch_mm(&next->context.id);
 	}
diff --git a/arch/um/include/asm/pci.h b/arch/um/include/asm/pci.h
index 59923199cdc..b44cf59ede1 100644
--- a/arch/um/include/asm/pci.h
+++ b/arch/um/include/asm/pci.h
@@ -2,6 +2,5 @@
 #define __UM_PCI_H
 
 #define PCI_DMA_BUS_IS_PHYS     (1)
-#define pcibios_scan_all_fns(a, b)	0
 
 #endif
diff --git a/arch/um/include/asm/pgalloc.h b/arch/um/include/asm/pgalloc.h
index 718984359f8..32c8ce4e151 100644
--- a/arch/um/include/asm/pgalloc.h
+++ b/arch/um/include/asm/pgalloc.h
@@ -40,7 +40,7 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
 	__free_page(pte);
 }
 
-#define __pte_free_tlb(tlb,pte)				\
+#define __pte_free_tlb(tlb,pte, address)		\
 do {							\
 	pgtable_page_dtor(pte);				\
 	tlb_remove_page((tlb),(pte));			\
@@ -53,7 +53,7 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
 	free_page((unsigned long)pmd);
 }
 
-#define __pmd_free_tlb(tlb,x)   tlb_remove_page((tlb),virt_to_page(x))
+#define __pmd_free_tlb(tlb,x, address)   tlb_remove_page((tlb),virt_to_page(x))
 #endif
 
 #define check_pgt_cache()	do { } while (0)
diff --git a/arch/um/include/asm/pgtable-3level.h b/arch/um/include/asm/pgtable-3level.h
index 084de4a9fc7..0032f9212e7 100644
--- a/arch/um/include/asm/pgtable-3level.h
+++ b/arch/um/include/asm/pgtable-3level.h
@@ -60,7 +60,7 @@
 	set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd)))
 
 #ifdef CONFIG_64BIT
-#define set_pud(pudptr, pudval) set_64bit((phys_t *) (pudptr), pud_val(pudval))
+#define set_pud(pudptr, pudval) set_64bit((u64 *) (pudptr), pud_val(pudval))
 #else
 #define set_pud(pudptr, pudval) (*(pudptr) = (pudval))
 #endif
@@ -73,7 +73,7 @@ static inline int pgd_newpage(pgd_t pgd)
 static inline void pgd_mkuptodate(pgd_t pgd) { pgd_val(pgd) &= ~_PAGE_NEWPAGE; }
 
 #ifdef CONFIG_64BIT
-#define set_pmd(pmdptr, pmdval) set_64bit((phys_t *) (pmdptr), pmd_val(pmdval))
+#define set_pmd(pmdptr, pmdval) set_64bit((u64 *) (pmdptr), pmd_val(pmdval))
 #else
 #define set_pmd(pmdptr, pmdval) (*(pmdptr) = (pmdval))
 #endif
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
index 9ce3f165111..41474fb5eee 100644
--- a/arch/um/include/asm/pgtable.h
+++ b/arch/um/include/asm/pgtable.h
@@ -338,14 +338,12 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 	((pte_t *) pmd_page_vaddr(*(dir)) +  pte_index(address))
 #define pte_offset_map(dir, address) \
 	((pte_t *)page_address(pmd_page(*(dir))) + pte_index(address))
-#define pte_offset_map_nested(dir, address) pte_offset_map(dir, address)
 #define pte_unmap(pte) do { } while (0)
-#define pte_unmap_nested(pte) do { } while (0)
 
 struct mm_struct;
 extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);
 
-#define update_mmu_cache(vma,address,pte) do ; while (0)
+#define update_mmu_cache(vma,address,ptep) do ; while (0)
 
 /* Encode and de-code a swap entry */
 #define __swp_type(x)			(((x).val >> 4) & 0x3f)
diff --git a/arch/um/include/asm/ptrace-generic.h b/arch/um/include/asm/ptrace-generic.h
index 6c8899013c9..b7c5bab9bd7 100644
--- a/arch/um/include/asm/ptrace-generic.h
+++ b/arch/um/include/asm/ptrace-generic.h
@@ -16,6 +16,8 @@ struct pt_regs {
 	struct uml_pt_regs regs;
 };
 
+#define arch_has_single_step()	(1)
+
 #define EMPTY_REGS { .regs = EMPTY_UML_PT_REGS }
 
 #define PT_REGS_IP(r) UPT_IP(&(r)->regs)
@@ -36,8 +38,8 @@ struct pt_regs {
 
 struct task_struct;
 
-extern long subarch_ptrace(struct task_struct *child, long request, long addr,
-			   long data);
+extern long subarch_ptrace(struct task_struct *child, long request,
+	unsigned long addr, unsigned long data);
 extern unsigned long getreg(struct task_struct *child, int regno);
 extern int putreg(struct task_struct *child, int regno, unsigned long value);
 extern int get_fpregs(struct user_i387_struct __user *buf,
diff --git a/arch/um/include/asm/system.h b/arch/um/include/asm/system.h
index 753346e2cdf..68a90ecd145 100644
--- a/arch/um/include/asm/system.h
+++ b/arch/um/include/asm/system.h
@@ -3,31 +3,43 @@
 
 #include "sysdep/system.h"
 
-extern void *switch_to(void *prev, void *next, void *last);
-
 extern int get_signals(void);
 extern int set_signals(int enable);
-extern int get_signals(void);
 extern void block_signals(void);
 extern void unblock_signals(void);
 
-#define local_save_flags(flags) do { typecheck(unsigned long, flags); \
-				     (flags) = get_signals(); } while(0)
-#define local_irq_restore(flags) do { typecheck(unsigned long, flags); \
-				      set_signals(flags); } while(0)
-
-#define local_irq_save(flags) do { local_save_flags(flags); \
-                                   local_irq_disable(); } while(0)
-
-#define local_irq_enable() unblock_signals()
-#define local_irq_disable() block_signals()
-
-#define irqs_disabled()                 \
-({                                      \
-        unsigned long flags;            \
-        local_save_flags(flags);        \
-        (flags == 0);                   \
-})
+static inline unsigned long arch_local_save_flags(void)
+{
+	return get_signals();
+}
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+	set_signals(flags);
+}
+
+static inline void arch_local_irq_enable(void)
+{
+	unblock_signals();
+}
+
+static inline void arch_local_irq_disable(void)
+{
+	block_signals();
+}
+
+static inline unsigned long arch_local_irq_save(void)
+{
+	unsigned long flags;
+	flags = arch_local_save_flags();
+	arch_local_irq_disable();
+	return flags;
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+	return arch_local_save_flags() == 0;
+}
 
 extern void *_switch_to(void *prev, void *next, void *last);
 #define switch_to(prev, next, last) prev = _switch_to(prev, next, last)
diff --git a/arch/um/include/asm/thread_info.h b/arch/um/include/asm/thread_info.h
index 62274ab9471..e2cf786bda0 100644
--- a/arch/um/include/asm/thread_info.h
+++ b/arch/um/include/asm/thread_info.h
@@ -32,7 +32,7 @@ struct thread_info {
 	.exec_domain =	&default_exec_domain,	\
 	.flags =		0,		\
 	.cpu =		0,			\
-	.preempt_count =	1,		\
+	.preempt_count = INIT_PREEMPT_COUNT,	\
 	.addr_limit =	KERNEL_DS,		\
 	.restart_block =  {			\
 		.fn =  do_no_restart_syscall,	\
@@ -63,10 +63,9 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_SIGPENDING		1	/* signal pending */
 #define TIF_NEED_RESCHED	2	/* rescheduling necessary */
 #define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling
-					 * TIF_NEED_RESCHED
-					 */
-#define TIF_RESTART_BLOCK 	4
-#define TIF_MEMDIE	 	5
+					 * TIF_NEED_RESCHED */
+#define TIF_RESTART_BLOCK	4
+#define TIF_MEMDIE		5	/* is terminating due to OOM killer */
 #define TIF_SYSCALL_AUDIT	6
 #define TIF_RESTORE_SIGMASK	7
 #define TIF_FREEZE		16	/* is freezing for suspend */
diff --git a/arch/um/include/asm/tlb.h b/arch/um/include/asm/tlb.h
index 5240fa1c5e0..660caedac9e 100644
--- a/arch/um/include/asm/tlb.h
+++ b/arch/um/include/asm/tlb.h
@@ -116,11 +116,11 @@ static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
 		__tlb_remove_tlb_entry(tlb, ptep, address);	\
 	} while (0)
 
-#define pte_free_tlb(tlb, ptep) __pte_free_tlb(tlb, ptep)
+#define pte_free_tlb(tlb, ptep, addr) __pte_free_tlb(tlb, ptep, addr)
 
-#define pud_free_tlb(tlb, pudp) __pud_free_tlb(tlb, pudp)
+#define pud_free_tlb(tlb, pudp, addr) __pud_free_tlb(tlb, pudp, addr)
 
-#define pmd_free_tlb(tlb, pmdp) __pmd_free_tlb(tlb, pmdp)
+#define pmd_free_tlb(tlb, pmdp, addr) __pmd_free_tlb(tlb, pmdp, addr)
 
 #define tlb_migrate_finish(mm) do {} while (0)
 
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h
index cd40fddcf99..c4617baaa4f 100644
--- a/arch/um/include/shared/os.h
+++ b/arch/um/include/shared/os.h
@@ -161,6 +161,9 @@ extern int os_stat_filesystem(char *path, long *bsize_out,
 			      long *spare_out);
 extern int os_change_dir(char *dir);
 extern int os_fchange_dir(int fd);
+extern unsigned os_major(unsigned long long dev);
+extern unsigned os_minor(unsigned long long dev);
+extern unsigned long long os_makedev(unsigned major, unsigned minor);
 
 /* start_up.c */
 extern void os_early_checks(void);
diff --git a/arch/um/include/shared/ptrace_user.h b/arch/um/include/shared/ptrace_user.h
index 4bce6e01288..7fd8539bc19 100644
--- a/arch/um/include/shared/ptrace_user.h
+++ b/arch/um/include/shared/ptrace_user.h
@@ -29,7 +29,7 @@ extern int ptrace_setregs(long pid, unsigned long *regs_in);
  * recompilation. So, we use PTRACE_OLDSETOPTIONS in UML.
  * We also want to be able to build the kernel on 2.4, which doesn't
  * have PTRACE_OLDSETOPTIONS. So, if it is missing, we declare
- * PTRACE_OLDSETOPTIONS to to be the same as PTRACE_SETOPTIONS.
+ * PTRACE_OLDSETOPTIONS to be the same as PTRACE_SETOPTIONS.
  *
  * On architectures, that start to support PTRACE_O_TRACESYSGOOD on
  * linux 2.6, PTRACE_OLDSETOPTIONS never is defined, and also isn't
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index 388ec0a3ea9..1119233597a 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -3,6 +3,9 @@
 # Licensed under the GPL
 #
 
+CPPFLAGS_vmlinux.lds := -U$(SUBARCH) -DSTART=$(LDS_START) \
+                        -DELF_ARCH=$(LDS_ELF_ARCH)        \
+                        -DELF_FORMAT=$(LDS_ELF_FORMAT)
 extra-y := vmlinux.lds
 clean-files :=
 
diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S
index 9975e1ab44f..a3cab6d3ae0 100644
--- a/arch/um/kernel/dyn.lds.S
+++ b/arch/um/kernel/dyn.lds.S
@@ -16,11 +16,7 @@ SECTIONS
   _text = .;
   _stext = .;
   __init_begin = .;
-  .init.text : {
-	_sinittext = .;
-	INIT_TEXT
-	_einittext = .;
-  }
+  INIT_TEXT_SECTION(PAGE_SIZE)
 
   . = ALIGN(PAGE_SIZE);
 
@@ -54,8 +50,18 @@ SECTIONS
   .rela.got       : { *(.rela.got) }
   .rel.bss        : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
   .rela.bss       : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
-  .rel.plt        : { *(.rel.plt) }
-  .rela.plt       : { *(.rela.plt) }
+  .rel.plt : {
+	*(.rel.plt)
+	PROVIDE_HIDDEN(__rel_iplt_start = .);
+	*(.rel.iplt)
+	PROVIDE_HIDDEN(__rel_iplt_end = .);
+  }
+  .rela.plt : {
+	*(.rela.plt)
+	PROVIDE_HIDDEN(__rela_iplt_start = .);
+	*(.rela.iplt)
+	PROVIDE_HIDDEN(__rela_iplt_end = .);
+  }
   .init           : {
     KEEP (*(.init))
   } =0x90909090
@@ -96,10 +102,9 @@ SECTIONS
   .init_array     : { *(.init_array) }
   .fini_array     : { *(.fini_array) }
   .data           : {
-    . = ALIGN(KERNEL_STACK_SIZE);		/* init_task */
-    *(.data.init_task)
+    INIT_TASK_DATA(KERNEL_STACK_SIZE)
     . = ALIGN(KERNEL_STACK_SIZE);
-    *(.data.init_irqstack)
+    *(.data..init_irqstack)
     DATA_DATA
     *(.data.* .gnu.linkonce.d.*)
     SORT(CONSTRUCTORS)
@@ -156,4 +161,6 @@ SECTIONS
   STABS_DEBUG
 
   DWARF_DEBUG
+
+  DISCARDS
 }
diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c
index fda30d21fb9..09bd7b58572 100644
--- a/arch/um/kernel/exec.c
+++ b/arch/um/kernel/exec.c
@@ -5,9 +5,9 @@
 
 #include "linux/stddef.h"
 #include "linux/fs.h"
-#include "linux/smp_lock.h"
 #include "linux/ptrace.h"
 #include "linux/sched.h"
+#include "linux/slab.h"
 #include "asm/current.h"
 #include "asm/processor.h"
 #include "asm/uaccess.h"
@@ -43,8 +43,9 @@ void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
 	PT_REGS_SP(regs) = esp;
 }
 
-static long execve1(char *file, char __user * __user *argv,
-		    char __user *__user *env)
+static long execve1(const char *file,
+		    const char __user *const __user *argv,
+		    const char __user *const __user *env)
 {
 	long error;
 
@@ -60,7 +61,7 @@ static long execve1(char *file, char __user * __user *argv,
 	return error;
 }
 
-long um_execve(char *file, char __user *__user *argv, char __user *__user *env)
+long um_execve(const char *file, const char __user *const __user *argv, const char __user *const __user *env)
 {
 	long err;
 
@@ -70,19 +71,17 @@ long um_execve(char *file, char __user *__user *argv, char __user *__user *env)
 	return err;
 }
 
-long sys_execve(char __user *file, char __user *__user *argv,
-		char __user *__user *env)
+long sys_execve(const char __user *file, const char __user *const __user *argv,
+		const char __user *const __user *env)
 {
 	long error;
 	char *filename;
 
-	lock_kernel();
 	filename = getname(file);
 	error = PTR_ERR(filename);
 	if (IS_ERR(filename)) goto out;
 	error = execve1(filename, argv, env);
 	putname(filename);
  out:
-	unlock_kernel();
 	return error;
 }
diff --git a/arch/um/kernel/exitcode.c b/arch/um/kernel/exitcode.c
index 6540d2c9fbb..829df49dee9 100644
--- a/arch/um/kernel/exitcode.c
+++ b/arch/um/kernel/exitcode.c
@@ -6,7 +6,9 @@
 #include <linux/ctype.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/types.h>
 #include <asm/uaccess.h>
 
@@ -16,30 +18,26 @@
  */
 int uml_exitcode = 0;
 
-static int read_proc_exitcode(char *page, char **start, off_t off,
-			      int count, int *eof, void *data)
+static int exitcode_proc_show(struct seq_file *m, void *v)
 {
-	int len, val;
+	int val;
 
 	/*
 	 * Save uml_exitcode in a local so that we don't need to guarantee
 	 * that sprintf accesses it atomically.
 	 */
 	val = uml_exitcode;
-	len = sprintf(page, "%d\n", val);
-	len -= off;
-	if (len <= off+count)
-		*eof = 1;
-	*start = page + off;
-	if (len > count)
-		len = count;
-	if (len < 0)
-		len = 0;
-	return len;
+	seq_printf(m, "%d\n", val);
+	return 0;
+}
+
+static int exitcode_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, exitcode_proc_show, NULL);
 }
 
-static int write_proc_exitcode(struct file *file, const char __user *buffer,
-			       unsigned long count, void *data)
+static ssize_t exitcode_proc_write(struct file *file,
+		const char __user *buffer, size_t count, loff_t *pos)
 {
 	char *end, buf[sizeof("nnnnn\0")];
 	int tmp;
@@ -55,20 +53,25 @@ static int write_proc_exitcode(struct file *file, const char __user *buffer,
 	return count;
 }
 
+static const struct file_operations exitcode_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= exitcode_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= exitcode_proc_write,
+};
+
 static int make_proc_exitcode(void)
 {
 	struct proc_dir_entry *ent;
 
-	ent = create_proc_entry("exitcode", 0600, NULL);
+	ent = proc_create("exitcode", 0600, NULL, &exitcode_proc_fops);
 	if (ent == NULL) {
 		printk(KERN_WARNING "make_proc_exitcode : Failed to register "
 		       "/proc/exitcode\n");
 		return 0;
 	}
-
-	ent->read_proc = read_proc_exitcode;
-	ent->write_proc = write_proc_exitcode;
-
 	return 0;
 }
 
diff --git a/arch/um/kernel/init_task.c b/arch/um/kernel/init_task.c
index b25121b537d..ddc9698b66e 100644
--- a/arch/um/kernel/init_task.c
+++ b/arch/um/kernel/init_task.c
@@ -30,10 +30,9 @@ EXPORT_SYMBOL(init_task);
  * "init_task" linker map entry..
  */
 
-union thread_union init_thread_union
-	__attribute__((__section__(".data.init_task"))) =
-		{ INIT_THREAD_INFO(init_task) };
+union thread_union init_thread_union __init_task_data =
+	{ INIT_THREAD_INFO(init_task) };
 
 union thread_union cpu0_irqstack
-	__attribute__((__section__(".data.init_irqstack"))) =
+	__attribute__((__section__(".data..init_irqstack"))) =
 		{ INIT_THREAD_INFO(init_task) };
diff --git a/arch/um/kernel/internal.h b/arch/um/kernel/internal.h
index 3bda43c7a78..5bf97db24a0 100644
--- a/arch/um/kernel/internal.h
+++ b/arch/um/kernel/internal.h
@@ -1 +1 @@
-extern long um_execve(char *file, char __user *__user *argv, char __user *__user *env);
+extern long um_execve(const char *file, const char __user *const __user *argv, const char __user *const __user *env);
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 454cdb43e35..3f0ac9e0c96 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -10,7 +10,9 @@
 #include "linux/interrupt.h"
 #include "linux/kernel_stat.h"
 #include "linux/module.h"
+#include "linux/sched.h"
 #include "linux/seq_file.h"
+#include "linux/slab.h"
 #include "as-layout.h"
 #include "kern_util.h"
 #include "os.h"
@@ -33,7 +35,7 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (!action)
 			goto skip;
@@ -44,7 +46,7 @@ int show_interrupts(struct seq_file *p, void *v)
 		for_each_online_cpu(j)
 			seq_printf(p, "%10u ", kstat_irqs_cpu(i, j));
 #endif
-		seq_printf(p, " %14s", irq_desc[i].chip->typename);
+		seq_printf(p, " %14s", irq_desc[i].chip->name);
 		seq_printf(p, "  %s", action->name);
 
 		for (action=action->next; action; action = action->next)
@@ -52,7 +54,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 		seq_putc(p, '\n');
 skip:
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	} else if (i == NR_IRQS)
 		seq_putc(p, '\n');
 
@@ -332,7 +334,7 @@ unsigned int do_IRQ(int irq, struct uml_pt_regs *regs)
 {
 	struct pt_regs *old_regs = set_irq_regs((struct pt_regs *)regs);
 	irq_enter();
-	__do_IRQ(irq);
+	generic_handle_irq(irq);
 	irq_exit();
 	set_irq_regs(old_regs);
 	return 1;
@@ -367,7 +369,7 @@ static void dummy(unsigned int irq)
 
 /* This is used for everything else than the timer. */
 static struct irq_chip normal_irq_type = {
-	.typename = "SIGIO",
+	.name = "SIGIO",
 	.release = free_irq_by_irq_and_dev,
 	.disable = dummy,
 	.enable = dummy,
@@ -376,7 +378,7 @@ static struct irq_chip normal_irq_type = {
 };
 
 static struct irq_chip SIGVTALRM_irq_type = {
-	.typename = "SIGVTALRM",
+	.name = "SIGVTALRM",
 	.release = free_irq_by_irq_and_dev,
 	.shutdown = dummy, /* never called */
 	.disable = dummy,
@@ -389,17 +391,10 @@ void __init init_IRQ(void)
 {
 	int i;
 
-	irq_desc[TIMER_IRQ].status = IRQ_DISABLED;
-	irq_desc[TIMER_IRQ].action = NULL;
-	irq_desc[TIMER_IRQ].depth = 1;
-	irq_desc[TIMER_IRQ].chip = &SIGVTALRM_irq_type;
-	enable_irq(TIMER_IRQ);
+	set_irq_chip_and_handler(TIMER_IRQ, &SIGVTALRM_irq_type, handle_edge_irq);
+
 	for (i = 1; i < NR_IRQS; i++) {
-		irq_desc[i].status = IRQ_DISABLED;
-		irq_desc[i].action = NULL;
-		irq_desc[i].depth = 1;
-		irq_desc[i].chip = &normal_irq_type;
-		enable_irq(i);
+		set_irq_chip_and_handler(i, &normal_irq_type, handle_edge_irq);
 	}
 }
 
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index 836fc9b9470..0ae0dfcfbff 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -58,6 +58,9 @@ EXPORT_SYMBOL(os_accept_connection);
 EXPORT_SYMBOL(os_rcv_fd);
 EXPORT_SYMBOL(run_helper);
 EXPORT_SYMBOL(start_thread);
+EXPORT_SYMBOL(os_major);
+EXPORT_SYMBOL(os_minor);
+EXPORT_SYMBOL(os_makedev);
 
 EXPORT_SYMBOL(add_sigio_fd);
 EXPORT_SYMBOL(ignore_sigio_fd);
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 61d7e6138ff..8137ccc9635 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -5,10 +5,10 @@
 
 #include <linux/stddef.h>
 #include <linux/bootmem.h>
-#include <linux/gfp.h>
 #include <linux/highmem.h>
 #include <linux/mm.h>
 #include <linux/swap.h>
+#include <linux/slab.h>
 #include <asm/fixmap.h>
 #include <asm/page.h>
 #include "as-layout.h"
@@ -77,7 +77,7 @@ void __init mem_init(void)
 	num_physpages = totalram_pages;
 	max_pfn = totalram_pages;
 	printk(KERN_INFO "Memory: %luk available\n",
-	       (unsigned long) nr_free_pages() << (PAGE_SHIFT-10));
+	       nr_free_pages() << (PAGE_SHIFT-10));
 	kmalloc_ok = 1;
 
 #ifdef CONFIG_HIGHMEM
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 4a28a1568d8..fab4371184f 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -7,13 +7,15 @@
 #include <linux/stddef.h>
 #include <linux/err.h>
 #include <linux/hardirq.h>
-#include <linux/gfp.h>
 #include <linux/mm.h>
+#include <linux/module.h>
 #include <linux/personality.h>
 #include <linux/proc_fs.h>
 #include <linux/ptrace.h>
 #include <linux/random.h>
+#include <linux/slab.h>
 #include <linux/sched.h>
+#include <linux/seq_file.h>
 #include <linux/tick.h>
 #include <linux/threads.h>
 #include <asm/current.h>
@@ -336,16 +338,19 @@ int get_using_sysemu(void)
 	return atomic_read(&using_sysemu);
 }
 
-static int proc_read_sysemu(char *buf, char **start, off_t offset, int size,int *eof, void *data)
+static int sysemu_proc_show(struct seq_file *m, void *v)
 {
-	if (snprintf(buf, size, "%d\n", get_using_sysemu()) < size)
-		/* No overflow */
-		*eof = 1;
+	seq_printf(m, "%d\n", get_using_sysemu());
+	return 0;
+}
 
-	return strlen(buf);
+static int sysemu_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, sysemu_proc_show, NULL);
 }
 
-static int proc_write_sysemu(struct file *file,const char __user *buf, unsigned long count,void *data)
+static ssize_t sysemu_proc_write(struct file *file, const char __user *buf,
+				 size_t count, loff_t *pos)
 {
 	char tmp[2];
 
@@ -358,13 +363,22 @@ static int proc_write_sysemu(struct file *file,const char __user *buf, unsigned
 	return count;
 }
 
+static const struct file_operations sysemu_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= sysemu_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= sysemu_proc_write,
+};
+
 int __init make_proc_sysemu(void)
 {
 	struct proc_dir_entry *ent;
 	if (!sysemu_supported)
 		return 0;
 
-	ent = create_proc_entry("sysemu", 0600, NULL);
+	ent = proc_create("sysemu", 0600, NULL, &sysemu_proc_fops);
 
 	if (ent == NULL)
 	{
@@ -372,9 +386,6 @@ int __init make_proc_sysemu(void)
 		return 0;
 	}
 
-	ent->read_proc  = proc_read_sysemu;
-	ent->write_proc = proc_write_sysemu;
-
 	return 0;
 }
 
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 8e3d69e4fcb..701b672c112 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -7,21 +7,27 @@
 #include "linux/ptrace.h"
 #include "linux/sched.h"
 #include "asm/uaccess.h"
-#ifdef CONFIG_PROC_MM
-#include "proc_mm.h"
-#endif
 #include "skas_ptrace.h"
 
-static inline void set_singlestepping(struct task_struct *child, int on)
+
+
+void user_enable_single_step(struct task_struct *child)
+{
+	child->ptrace |= PT_DTRACE;
+	child->thread.singlestep_syscall = 0;
+
+#ifdef SUBARCH_SET_SINGLESTEPPING
+	SUBARCH_SET_SINGLESTEPPING(child, 1);
+#endif
+}
+
+void user_disable_single_step(struct task_struct *child)
 {
-	if (on)
-		child->ptrace |= PT_DTRACE;
-	else
-		child->ptrace &= ~PT_DTRACE;
+	child->ptrace &= ~PT_DTRACE;
 	child->thread.singlestep_syscall = 0;
 
 #ifdef SUBARCH_SET_SINGLESTEPPING
-	SUBARCH_SET_SINGLESTEPPING(child, on);
+	SUBARCH_SET_SINGLESTEPPING(child, 0);
 #endif
 }
 
@@ -30,16 +36,18 @@ static inline void set_singlestepping(struct task_struct *child, int on)
  */
 void ptrace_disable(struct task_struct *child)
 {
-	set_singlestepping(child,0);
+	user_disable_single_step(child);
 }
 
 extern int peek_user(struct task_struct * child, long addr, long data);
 extern int poke_user(struct task_struct * child, long addr, long data);
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+		 unsigned long addr, unsigned long data)
 {
 	int i, ret;
-	unsigned long __user *p = (void __user *)(unsigned long)data;
+	unsigned long __user *p = (void __user *)data;
+	void __user *vp = p;
 
 	switch (request) {
 	/* read word at location addr. */
@@ -69,53 +77,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		ret = -EIO;
 		break;
 
-	/* continue and stop at next (return from) syscall */
-	case PTRACE_SYSCALL:
-	/* restart after signal. */
-	case PTRACE_CONT: {
-		ret = -EIO;
-		if (!valid_signal(data))
-			break;
-
-		set_singlestepping(child, 0);
-		if (request == PTRACE_SYSCALL)
-			set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		else clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		child->exit_code = data;
-		wake_up_process(child);
-		ret = 0;
-		break;
-	}
-
-/*
- * make the child exit.  Best I can do is send it a sigkill.
- * perhaps it should be put in the status that it wants to
- * exit.
- */
-	case PTRACE_KILL: {
-		ret = 0;
-		if (child->exit_state == EXIT_ZOMBIE)	/* already dead */
-			break;
-
-		set_singlestepping(child, 0);
-		child->exit_code = SIGKILL;
-		wake_up_process(child);
-		break;
-	}
-
-	case PTRACE_SINGLESTEP: {  /* set the trap flag. */
-		ret = -EIO;
-		if (!valid_signal(data))
-			break;
-		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		set_singlestepping(child, 1);
-		child->exit_code = data;
-		/* give it a chance to run. */
-		wake_up_process(child);
-		ret = 0;
-		break;
-	}
-
 #ifdef PTRACE_GETREGS
 	case PTRACE_GETREGS: { /* Get all gp regs from the child. */
 		if (!access_ok(VERIFY_WRITE, p, MAX_REG_OFFSET)) {
@@ -148,24 +109,20 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 #endif
 #ifdef PTRACE_GETFPREGS
 	case PTRACE_GETFPREGS: /* Get the child FPU state. */
-		ret = get_fpregs((struct user_i387_struct __user *) data,
-				 child);
+		ret = get_fpregs(vp, child);
 		break;
 #endif
 #ifdef PTRACE_SETFPREGS
 	case PTRACE_SETFPREGS: /* Set the child FPU state. */
-	        ret = set_fpregs((struct user_i387_struct __user *) data,
-				 child);
+		ret = set_fpregs(vp, child);
 		break;
 #endif
 	case PTRACE_GET_THREAD_AREA:
-		ret = ptrace_get_thread_area(child, addr,
-					     (struct user_desc __user *) data);
+		ret = ptrace_get_thread_area(child, addr, vp);
 		break;
 
 	case PTRACE_SET_THREAD_AREA:
-		ret = ptrace_set_thread_area(child, addr,
-					     (struct user_desc __user *) data);
+		ret = ptrace_set_thread_area(child, addr, vp);
 		break;
 
 	case PTRACE_FAULTINFO: {
@@ -175,7 +132,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		 * On i386, ptrace_faultinfo is smaller!
 		 */
 		ret = copy_to_user(p, &child->thread.arch.faultinfo,
-				   sizeof(struct ptrace_faultinfo));
+				   sizeof(struct ptrace_faultinfo)) ?
+			-EIO : 0;
 		break;
 	}
 
@@ -196,28 +154,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		break;
 	}
 #endif
-#ifdef CONFIG_PROC_MM
-	case PTRACE_SWITCH_MM: {
-		struct mm_struct *old = child->mm;
-		struct mm_struct *new = proc_mm_get_mm(data);
-
-		if (IS_ERR(new)) {
-			ret = PTR_ERR(new);
-			break;
-		}
-
-		atomic_inc(&new->mm_users);
-		child->mm = new;
-		child->active_mm = new;
-		mmput(old);
-		ret = 0;
-		break;
-	}
-#endif
 #ifdef PTRACE_ARCH_PRCTL
 	case PTRACE_ARCH_PRCTL:
 		/* XXX Calls ptrace on the host - needs some SMP thinking */
-		ret = arch_prctl(child, data, (void *) addr);
+		ret = arch_prctl(child, data, (void __user *) addr);
 		break;
 #endif
 	default:
diff --git a/arch/um/kernel/reboot.c b/arch/um/kernel/reboot.c
index 00197d3d21e..869bec9f251 100644
--- a/arch/um/kernel/reboot.c
+++ b/arch/um/kernel/reboot.c
@@ -4,6 +4,7 @@
  */
 
 #include "linux/sched.h"
+#include "linux/slab.h"
 #include "kern_util.h"
 #include "os.h"
 #include "skas.h"
diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c
index 0cd9a7a05e7..3d099f97478 100644
--- a/arch/um/kernel/skas/mmu.c
+++ b/arch/um/kernel/skas/mmu.c
@@ -5,6 +5,7 @@
 
 #include "linux/mm.h"
 #include "linux/sched.h"
+#include "linux/slab.h"
 #include "asm/pgalloc.h"
 #include "asm/pgtable.h"
 #include "as-layout.h"
@@ -38,10 +39,10 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
 	*pte = pte_mkread(*pte);
 	return 0;
 
- out_pmd:
-	pud_free(mm, pud);
  out_pte:
 	pmd_free(mm, pmd);
+ out_pmd:
+	pud_free(mm, pud);
  out:
 	return -ENOMEM;
 }
diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c
index 4e3b820bd2b..f5173e1ec3a 100644
--- a/arch/um/kernel/skas/syscall.c
+++ b/arch/um/kernel/skas/syscall.c
@@ -10,7 +10,7 @@
 #include "sysdep/syscalls.h"
 
 extern int syscall_table_size;
-#define NR_syscalls (syscall_table_size / sizeof(void *))
+#define NR_SYSCALLS (syscall_table_size / sizeof(void *))
 
 void handle_syscall(struct uml_pt_regs *r)
 {
@@ -30,7 +30,7 @@ void handle_syscall(struct uml_pt_regs *r)
 	 * in case it's a compiler bug.
 	 */
 	syscall = UPT_SYSCALL_NR(r);
-	if ((syscall >= NR_syscalls) || (syscall < 0))
+	if ((syscall >= NR_SYSCALLS) || (syscall < 0))
 		result = -ENOSYS;
 	else result = EXECUTE_SYSCALL(syscall, regs);
 
diff --git a/arch/um/kernel/skas/uaccess.c b/arch/um/kernel/skas/uaccess.c
index e22c96993db..696634214dc 100644
--- a/arch/um/kernel/skas/uaccess.c
+++ b/arch/um/kernel/skas/uaccess.c
@@ -81,7 +81,7 @@ static int do_op_one_page(unsigned long addr, int len, int is_write,
 
 	current->thread.fault_catcher = NULL;
 
-	kunmap_atomic(page, KM_UML_USERCOPY);
+	kunmap_atomic((void *)addr, KM_UML_USERCOPY);
 
 	return n;
 }
diff --git a/arch/um/kernel/smp.c b/arch/um/kernel/smp.c
index 98351c78bc8..106bf27e2a9 100644
--- a/arch/um/kernel/smp.c
+++ b/arch/um/kernel/smp.c
@@ -111,7 +111,7 @@ void smp_prepare_cpus(unsigned int maxcpus)
 	int i;
 
 	for (i = 0; i < ncpus; ++i)
-		cpu_set(i, cpu_possible_map);
+		set_cpu_possible(i, true);
 
 	cpu_clear(me, cpu_online_map);
 	cpu_set(me, cpu_online_map);
diff --git a/arch/um/kernel/syscall.c b/arch/um/kernel/syscall.c
index a4625c7b2bf..f958cb876ee 100644
--- a/arch/um/kernel/syscall.c
+++ b/arch/um/kernel/syscall.c
@@ -8,6 +8,7 @@
 #include "linux/mm.h"
 #include "linux/sched.h"
 #include "linux/utsname.h"
+#include "linux/syscalls.h"
 #include "asm/current.h"
 #include "asm/mman.h"
 #include "asm/uaccess.h"
@@ -37,31 +38,6 @@ long sys_vfork(void)
 	return ret;
 }
 
-/* common code for old and new mmaps */
-long sys_mmap2(unsigned long addr, unsigned long len,
-	       unsigned long prot, unsigned long flags,
-	       unsigned long fd, unsigned long pgoff)
-{
-	long error = -EBADF;
-	struct file * file = NULL;
-
-	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
-	if (!(flags & MAP_ANONYMOUS)) {
-		file = fget(fd);
-		if (!file)
-			goto out;
-	}
-
-	down_write(&current->mm->mmap_sem);
-	error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
-	up_write(&current->mm->mmap_sem);
-
-	if (file)
-		fput(file);
- out:
-	return error;
-}
-
 long old_mmap(unsigned long addr, unsigned long len,
 	      unsigned long prot, unsigned long flags,
 	      unsigned long fd, unsigned long offset)
@@ -70,65 +46,22 @@ long old_mmap(unsigned long addr, unsigned long len,
 	if (offset & ~PAGE_MASK)
 		goto out;
 
-	err = sys_mmap2(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
+	err = sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
  out:
 	return err;
 }
 
-long sys_uname(struct old_utsname __user * name)
-{
-	long err;
-	if (!name)
-		return -EFAULT;
-	down_read(&uts_sem);
-	err = copy_to_user(name, utsname(), sizeof (*name));
-	up_read(&uts_sem);
-	return err?-EFAULT:0;
-}
-
-long sys_olduname(struct oldold_utsname __user * name)
-{
-	long error;
-
-	if (!name)
-		return -EFAULT;
-	if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
-		return -EFAULT;
-
-	down_read(&uts_sem);
-
-	error = __copy_to_user(&name->sysname, &utsname()->sysname,
-			       __OLD_UTS_LEN);
-	error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->nodename, &utsname()->nodename,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->release, &utsname()->release,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->release + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->version, &utsname()->version,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->version + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->machine, &utsname()->machine,
-				__OLD_UTS_LEN);
-	error |= __put_user(0, name->machine + __OLD_UTS_LEN);
-
-	up_read(&uts_sem);
-
-	error = error ? -EFAULT : 0;
-
-	return error;
-}
-
-int kernel_execve(const char *filename, char *const argv[], char *const envp[])
+int kernel_execve(const char *filename,
+		  const char *const argv[],
+		  const char *const envp[])
 {
 	mm_segment_t fs;
 	int ret;
 
 	fs = get_fs();
 	set_fs(KERNEL_DS);
-	ret = um_execve((char *)filename, (char __user *__user *)argv,
-			(char __user *__user *) envp);
+	ret = um_execve(filename, (const char __user *const __user *)argv,
+			(const char __user *const __user *) envp);
 	set_fs(fs);
 
 	return ret;
diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c
index 56d43d0a396..0960de54495 100644
--- a/arch/um/kernel/sysrq.c
+++ b/arch/um/kernel/sysrq.c
@@ -70,8 +70,8 @@ void show_stack(struct task_struct *task, unsigned long *esp)
 		if (kstack_end(stack))
 			break;
 		if (i && ((i % 8) == 0))
-			printk("\n" KERN_INFO "       ");
-		printk("%08lx ", *stack++);
+			printk(KERN_INFO "       ");
+		printk(KERN_CONT "%08lx ", *stack++);
 	}
 
 	show_trace(task, esp);
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c
index c8b9c469fcd..a08d9fab81f 100644
--- a/arch/um/kernel/time.c
+++ b/arch/um/kernel/time.c
@@ -102,16 +102,16 @@ static void __init setup_itimer(void)
 	clockevents_register_device(&itimer_clockevent);
 }
 
-void __init time_init(void)
+void read_persistent_clock(struct timespec *ts)
 {
-	long long nsecs;
-
-	timer_init();
+	long long nsecs = os_nsecs();
 
-	nsecs = os_nsecs();
-	set_normalized_timespec(&wall_to_monotonic, -nsecs / NSEC_PER_SEC,
-				-nsecs % NSEC_PER_SEC);
-	set_normalized_timespec(&xtime, nsecs / NSEC_PER_SEC,
+	set_normalized_timespec(ts, nsecs / NSEC_PER_SEC,
 				nsecs % NSEC_PER_SEC);
+}
+
+void __init time_init(void)
+{
+	timer_init();
 	late_time_init = setup_itimer;
 }
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index 11b835248b8..fbd99402d4d 100644
--- a/arch/um/kernel/uml.lds.S
+++ b/arch/um/kernel/uml.lds.S
@@ -22,11 +22,7 @@ SECTIONS
   _text = .;
   _stext = .;
   __init_begin = .;
-  .init.text : {
-	_sinittext = .;
-	INIT_TEXT
-	_einittext = .;
-  }
+  INIT_TEXT_SECTION(0)
   . = ALIGN(PAGE_SIZE);
 
   .text      :
@@ -47,15 +43,31 @@ SECTIONS
 	__syscall_stub_end = .;
   }
 
+  /*
+   * These are needed even in a static link, even if they wind up being empty.
+   * Newer glibc needs these __rel{,a}_iplt_{start,end} symbols.
+   */
+  .rel.plt : {
+	*(.rel.plt)
+	PROVIDE_HIDDEN(__rel_iplt_start = .);
+	*(.rel.iplt)
+	PROVIDE_HIDDEN(__rel_iplt_end = .);
+  }
+  .rela.plt : {
+	*(.rela.plt)
+	PROVIDE_HIDDEN(__rela_iplt_start = .);
+	*(.rela.iplt)
+	PROVIDE_HIDDEN(__rela_iplt_end = .);
+  }
+
   #include "asm/common.lds.S"
 
   init.data : { INIT_DATA }
   .data    :
   {
-    . = ALIGN(KERNEL_STACK_SIZE);		/* init_task */
-    *(.data.init_task)
+    INIT_TASK_DATA(KERNEL_STACK_SIZE)
     . = ALIGN(KERNEL_STACK_SIZE);
-    *(.data.init_irqstack)
+    *(.data..init_irqstack)
     DATA_DATA
     *(.gnu.linkonce.d*)
     CONSTRUCTORS
@@ -81,23 +93,16 @@ SECTIONS
   _edata  =  .;
   PROVIDE (edata = .);
   . = ALIGN(PAGE_SIZE);
-  .sbss      :
-  {
-   __bss_start = .;
-   PROVIDE(_bss_start = .);
-   *(.sbss)
-   *(.scommon)
-  }
-  .bss       :
-  {
-   *(.dynbss)
-   *(.bss)
-   *(COMMON)
-  }
+  __bss_start = .;
+  PROVIDE(_bss_start = .);
+  SBSS(0)
+  BSS(0)
   _end = .;
   PROVIDE (end = .);
 
   STABS_DEBUG
 
   DWARF_DEBUG
+
+  DISCARDS
 }
diff --git a/arch/um/kernel/vmlinux.lds.S b/arch/um/kernel/vmlinux.lds.S
index f8aeb448aab..16e49bfa2b4 100644
--- a/arch/um/kernel/vmlinux.lds.S
+++ b/arch/um/kernel/vmlinux.lds.S
@@ -1,3 +1,6 @@
+
+KERNEL_STACK_SIZE = 4096 * (1 << CONFIG_KERNEL_STACK_ORDER);
+
 #ifdef CONFIG_LD_SCRIPT_STATIC
 #include "uml.lds.S"
 #else
diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index b5afcfd0f86..140e587bc0a 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -561,3 +561,18 @@ int os_lock_file(int fd, int excl)
  out:
 	return err;
 }
+
+unsigned os_major(unsigned long long dev)
+{
+	return major(dev);
+}
+
+unsigned os_minor(unsigned long long dev)
+{
+	return minor(dev);
+}
+
+unsigned long long os_makedev(unsigned major, unsigned minor)
+{
+	return makedev(major, minor);
+}
diff --git a/arch/um/os-Linux/helper.c b/arch/um/os-Linux/helper.c
index 30860b89ec5..b6b1096152a 100644
--- a/arch/um/os-Linux/helper.c
+++ b/arch/um/os-Linux/helper.c
@@ -15,7 +15,6 @@
 #include "os.h"
 #include "um_malloc.h"
 #include "user.h"
-#include <linux/limits.h>
 
 struct helper_data {
 	void (*pre_exec)(void*);
diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c
index 93a11d7edfa..e696144d2be 100644
--- a/arch/um/os-Linux/mem.c
+++ b/arch/um/os-Linux/mem.c
@@ -10,6 +10,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <string.h>
+#include <sys/stat.h>
 #include <sys/mman.h>
 #include <sys/param.h>
 #include "init.h"
diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c
index dec5678fc17..6e3359d6a83 100644
--- a/arch/um/os-Linux/time.c
+++ b/arch/um/os-Linux/time.c
@@ -60,7 +60,7 @@ static inline long long timeval_to_ns(const struct timeval *tv)
 long long disable_timer(void)
 {
 	struct itimerval time = ((struct itimerval) { { 0, 0 }, { 0, 0 } });
-	int remain, max = UM_NSEC_PER_SEC / UM_HZ;
+	long long remain, max = UM_NSEC_PER_SEC / UM_HZ;
 
 	if (setitimer(ITIMER_VIRTUAL, &time, &time) < 0)
 		printk(UM_KERN_ERR "disable_timer - setitimer failed, "
diff --git a/arch/um/os-Linux/user_syms.c b/arch/um/os-Linux/user_syms.c
index 89b48a116a8..05f5ea8e83d 100644
--- a/arch/um/os-Linux/user_syms.c
+++ b/arch/um/os-Linux/user_syms.c
@@ -103,6 +103,10 @@ EXPORT_SYMBOL_PROTO(getuid);
 EXPORT_SYMBOL_PROTO(fsync);
 EXPORT_SYMBOL_PROTO(fdatasync);
 
+EXPORT_SYMBOL_PROTO(lstat64);
+EXPORT_SYMBOL_PROTO(fstat64);
+EXPORT_SYMBOL_PROTO(mknod);
+
 /* Export symbols used by GCC for the stack protector. */
 extern void __stack_smash_handler(void *) __attribute__((weak));
 EXPORT_SYMBOL(__stack_smash_handler);
diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile
index 1b549bca464..804b28dd032 100644
--- a/arch/um/sys-i386/Makefile
+++ b/arch/um/sys-i386/Makefile
@@ -6,6 +6,8 @@ obj-y = bug.o bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \
 	ptrace_user.o setjmp.o signal.o stub.o stub_segv.o syscalls.o sysrq.o \
 	sys_call_table.o tls.o
 
+obj-$(CONFIG_BINFMT_ELF) += elfcore.o
+
 subarch-obj-y = lib/semaphore_32.o lib/string_32.o
 subarch-obj-$(CONFIG_HIGHMEM) += mm/highmem_32.o
 subarch-obj-$(CONFIG_MODULES) += kernel/module.o
diff --git a/arch/um/sys-i386/asm/elf.h b/arch/um/sys-i386/asm/elf.h
index d0da9d7c537..a979a22a8d9 100644
--- a/arch/um/sys-i386/asm/elf.h
+++ b/arch/um/sys-i386/asm/elf.h
@@ -48,7 +48,6 @@ typedef struct user_i387_struct elf_fpregset_t;
 	PT_REGS_EAX(regs) = 0; \
 } while (0)
 
-#define USE_ELF_CORE_DUMP
 #define ELF_EXEC_PAGESIZE 4096
 
 #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
@@ -76,6 +75,8 @@ typedef struct user_i387_struct elf_fpregset_t;
 	pr_reg[16] = PT_REGS_SS(regs);		\
 } while (0);
 
+struct task_struct;
+
 extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
 
 #define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu)
@@ -117,47 +118,4 @@ do {								\
 	}							\
 } while (0)
 
-/*
- * These macros parameterize elf_core_dump in fs/binfmt_elf.c to write out
- * extra segments containing the vsyscall DSO contents.  Dumping its
- * contents makes post-mortem fully interpretable later without matching up
- * the same kernel and hardware config to see what PC values meant.
- * Dumping its extra ELF program headers includes all the other information
- * a debugger needs to easily find how the vsyscall DSO was being used.
- */
-#define ELF_CORE_EXTRA_PHDRS						      \
-	(vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0 )
-
-#define ELF_CORE_WRITE_EXTRA_PHDRS					      \
-if ( vsyscall_ehdr ) {							      \
-	const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr;    \
-	const struct elf_phdr *const phdrp =				      \
-		(const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);   \
-	int i;								      \
-	Elf32_Off ofs = 0;						      \
-	for (i = 0; i < ehdrp->e_phnum; ++i) {				      \
-		struct elf_phdr phdr = phdrp[i];			      \
-		if (phdr.p_type == PT_LOAD) {				      \
-			ofs = phdr.p_offset = offset;			      \
-			offset += phdr.p_filesz;			      \
-		}							      \
-		else							      \
-			phdr.p_offset += ofs;				      \
-		phdr.p_paddr = 0; /* match other core phdrs */		      \
-		DUMP_WRITE(&phdr, sizeof(phdr));			      \
-	}								      \
-}
-#define ELF_CORE_WRITE_EXTRA_DATA					      \
-if ( vsyscall_ehdr ) {							      \
-	const struct elfhdr *const ehdrp = (struct elfhdr *)vsyscall_ehdr;    \
-	const struct elf_phdr *const phdrp =				      \
-		(const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);   \
-	int i;								      \
-	for (i = 0; i < ehdrp->e_phnum; ++i) {				      \
-		if (phdrp[i].p_type == PT_LOAD)				      \
-			DUMP_WRITE((void *) phdrp[i].p_vaddr,		      \
-				   phdrp[i].p_filesz);			      \
-	}								      \
-}
-
 #endif
diff --git a/arch/um/sys-i386/elfcore.c b/arch/um/sys-i386/elfcore.c
new file mode 100644
index 00000000000..6bb49b687c9
--- /dev/null
+++ b/arch/um/sys-i386/elfcore.c
@@ -0,0 +1,83 @@
+#include <linux/elf.h>
+#include <linux/coredump.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+
+#include <asm/elf.h>
+
+
+Elf32_Half elf_core_extra_phdrs(void)
+{
+	return vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0;
+}
+
+int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
+			       unsigned long limit)
+{
+	if ( vsyscall_ehdr ) {
+		const struct elfhdr *const ehdrp =
+			(struct elfhdr *) vsyscall_ehdr;
+		const struct elf_phdr *const phdrp =
+			(const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);
+		int i;
+		Elf32_Off ofs = 0;
+
+		for (i = 0; i < ehdrp->e_phnum; ++i) {
+			struct elf_phdr phdr = phdrp[i];
+
+			if (phdr.p_type == PT_LOAD) {
+				ofs = phdr.p_offset = offset;
+				offset += phdr.p_filesz;
+			} else {
+				phdr.p_offset += ofs;
+			}
+			phdr.p_paddr = 0; /* match other core phdrs */
+			*size += sizeof(phdr);
+			if (*size > limit
+			    || !dump_write(file, &phdr, sizeof(phdr)))
+				return 0;
+		}
+	}
+	return 1;
+}
+
+int elf_core_write_extra_data(struct file *file, size_t *size,
+			      unsigned long limit)
+{
+	if ( vsyscall_ehdr ) {
+		const struct elfhdr *const ehdrp =
+			(struct elfhdr *) vsyscall_ehdr;
+		const struct elf_phdr *const phdrp =
+			(const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);
+		int i;
+
+		for (i = 0; i < ehdrp->e_phnum; ++i) {
+			if (phdrp[i].p_type == PT_LOAD) {
+				void *addr = (void *) phdrp[i].p_vaddr;
+				size_t filesz = phdrp[i].p_filesz;
+
+				*size += filesz;
+				if (*size > limit
+				    || !dump_write(file, addr, filesz))
+					return 0;
+			}
+		}
+	}
+	return 1;
+}
+
+size_t elf_core_extra_data_size(void)
+{
+	if ( vsyscall_ehdr ) {
+		const struct elfhdr *const ehdrp =
+			(struct elfhdr *)vsyscall_ehdr;
+		const struct elf_phdr *const phdrp =
+			(const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff);
+		int i;
+
+		for (i = 0; i < ehdrp->e_phnum; ++i)
+			if (phdrp[i].p_type == PT_LOAD)
+				return (size_t) phdrp[i].p_filesz;
+	}
+	return 0;
+}
diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c
index a4846a84a7b..3f2bf208d88 100644
--- a/arch/um/sys-i386/ldt.c
+++ b/arch/um/sys-i386/ldt.c
@@ -5,6 +5,7 @@
 
 #include <linux/mm.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <asm/unistd.h>
 #include "os.h"
 #include "proc_mm.h"
diff --git a/arch/um/sys-i386/ptrace.c b/arch/um/sys-i386/ptrace.c
index c9b176534d6..d23b2d3ea38 100644
--- a/arch/um/sys-i386/ptrace.c
+++ b/arch/um/sys-i386/ptrace.c
@@ -203,8 +203,8 @@ int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
 				     (unsigned long *) &fpregs);
 }
 
-long subarch_ptrace(struct task_struct *child, long request, long addr,
-		    long data)
+long subarch_ptrace(struct task_struct *child, long request,
+		    unsigned long addr, unsigned long data)
 {
 	return -EIO;
 }
diff --git a/arch/um/sys-i386/shared/sysdep/syscalls.h b/arch/um/sys-i386/shared/sysdep/syscalls.h
index 905698197e3..05cb796aecb 100644
--- a/arch/um/sys-i386/shared/sysdep/syscalls.h
+++ b/arch/um/sys-i386/shared/sysdep/syscalls.h
@@ -13,14 +13,8 @@ typedef long syscall_handler_t(struct pt_regs);
  */
 extern syscall_handler_t sys_rt_sigaction;
 
-extern syscall_handler_t old_mmap_i386;
-
 extern syscall_handler_t *sys_call_table[];
 
 #define EXECUTE_SYSCALL(syscall, regs) \
 	((long (*)(struct syscall_args)) \
 	 (*sys_call_table[syscall]))(SYSCALL_ARGS(&regs->regs))
-
-extern long sys_mmap2(unsigned long addr, unsigned long len,
-		      unsigned long prot, unsigned long flags,
-		      unsigned long fd, unsigned long pgoff);
diff --git a/arch/um/sys-i386/sys_call_table.S b/arch/um/sys-i386/sys_call_table.S
index c6260dd6ebb..de274071455 100644
--- a/arch/um/sys-i386/sys_call_table.S
+++ b/arch/um/sys-i386/sys_call_table.S
@@ -7,7 +7,7 @@
 #define sys_vm86old sys_ni_syscall
 #define sys_vm86 sys_ni_syscall
 
-#define old_mmap old_mmap_i386
+#define old_mmap sys_old_mmap
 
 #define ptregs_fork sys_fork
 #define ptregs_execve sys_execve
diff --git a/arch/um/sys-i386/syscalls.c b/arch/um/sys-i386/syscalls.c
index 857ca0b3bde..70ca357393b 100644
--- a/arch/um/sys-i386/syscalls.c
+++ b/arch/um/sys-i386/syscalls.c
@@ -12,57 +12,6 @@
 #include "asm/unistd.h"
 
 /*
- * Perform the select(nd, in, out, ex, tv) and mmap() system
- * calls. Linux/i386 didn't use to be able to handle more than
- * 4 system call parameters, so these system calls used a memory
- * block for parameter passing..
- */
-
-struct mmap_arg_struct {
-	unsigned long addr;
-	unsigned long len;
-	unsigned long prot;
-	unsigned long flags;
-	unsigned long fd;
-	unsigned long offset;
-};
-
-extern int old_mmap(unsigned long addr, unsigned long len,
-		    unsigned long prot, unsigned long flags,
-		    unsigned long fd, unsigned long offset);
-
-long old_mmap_i386(struct mmap_arg_struct __user *arg)
-{
-	struct mmap_arg_struct a;
-	int err = -EFAULT;
-
-	if (copy_from_user(&a, arg, sizeof(a)))
-		goto out;
-
-	err = old_mmap(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
- out:
-	return err;
-}
-
-struct sel_arg_struct {
-	unsigned long n;
-	fd_set __user *inp;
-	fd_set __user *outp;
-	fd_set __user *exp;
-	struct timeval __user *tvp;
-};
-
-long old_select(struct sel_arg_struct __user *arg)
-{
-	struct sel_arg_struct a;
-
-	if (copy_from_user(&a, arg, sizeof(a)))
-		return -EFAULT;
-	/* sys_select() does the appropriate kernel locking */
-	return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
-}
-
-/*
  * The prototype on i386 is:
  *
  *     int clone(int flags, void * child_stack, int * parent_tidptr, struct user_desc * newtls, int * child_tidptr)
@@ -85,92 +34,6 @@ long sys_clone(unsigned long clone_flags, unsigned long newsp,
 	return ret;
 }
 
-/*
- * sys_ipc() is the de-multiplexer for the SysV IPC calls..
- *
- * This is really horribly ugly.
- */
-long sys_ipc (uint call, int first, int second,
-	     int third, void __user *ptr, long fifth)
-{
-	int version, ret;
-
-	version = call >> 16; /* hack for backward compatibility */
-	call &= 0xffff;
-
-	switch (call) {
-	case SEMOP:
-		return sys_semtimedop(first, (struct sembuf __user *) ptr,
-				      second, NULL);
-	case SEMTIMEDOP:
-		return sys_semtimedop(first, (struct sembuf __user *) ptr,
-				      second,
-				      (const struct timespec __user *) fifth);
-	case SEMGET:
-		return sys_semget (first, second, third);
-	case SEMCTL: {
-		union semun fourth;
-		if (!ptr)
-			return -EINVAL;
-		if (get_user(fourth.__pad, (void __user * __user *) ptr))
-			return -EFAULT;
-		return sys_semctl (first, second, third, fourth);
-	}
-
-	case MSGSND:
-		return sys_msgsnd (first, (struct msgbuf *) ptr,
-				   second, third);
-	case MSGRCV:
-		switch (version) {
-		case 0: {
-			struct ipc_kludge tmp;
-			if (!ptr)
-				return -EINVAL;
-
-			if (copy_from_user(&tmp,
-					   (struct ipc_kludge *) ptr,
-					   sizeof (tmp)))
-				return -EFAULT;
-			return sys_msgrcv (first, tmp.msgp, second,
-					   tmp.msgtyp, third);
-		}
-		default:
-		        panic("msgrcv with version != 0");
-			return sys_msgrcv (first,
-					   (struct msgbuf *) ptr,
-					   second, fifth, third);
-		}
-	case MSGGET:
-		return sys_msgget ((key_t) first, second);
-	case MSGCTL:
-		return sys_msgctl (first, second, (struct msqid_ds *) ptr);
-
-	case SHMAT:
-		switch (version) {
-		default: {
-			ulong raddr;
-			ret = do_shmat (first, (char *) ptr, second, &raddr);
-			if (ret)
-				return ret;
-			return put_user (raddr, (ulong *) third);
-		}
-		case 1:	/* iBCS2 emulator entry point */
-			if (!segment_eq(get_fs(), get_ds()))
-				return -EINVAL;
-			return do_shmat (first, (char *) ptr, second, (ulong *) third);
-		}
-	case SHMDT:
-		return sys_shmdt ((char *)ptr);
-	case SHMGET:
-		return sys_shmget (first, second, third);
-	case SHMCTL:
-		return sys_shmctl (first, second,
-				   (struct shmid_ds *) ptr);
-	default:
-		return -ENOSYS;
-	}
-}
-
 long sys_sigaction(int sig, const struct old_sigaction __user *act,
 			 struct old_sigaction __user *oact)
 {
diff --git a/arch/um/sys-ppc/asm/elf.h b/arch/um/sys-ppc/asm/elf.h
index af9463cd8ce..8aacaf56508 100644
--- a/arch/um/sys-ppc/asm/elf.h
+++ b/arch/um/sys-ppc/asm/elf.h
@@ -17,8 +17,6 @@ extern long elf_aux_hwcap;
 #define ELF_CLASS ELFCLASS32
 #endif
 
-#define USE_ELF_CORE_DUMP
-
 #define R_386_NONE	0
 #define R_386_32	1
 #define R_386_PC32	2
diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile
index 2201e9c20e4..c1ea9eb0446 100644
--- a/arch/um/sys-x86_64/Makefile
+++ b/arch/um/sys-x86_64/Makefile
@@ -8,7 +8,8 @@ obj-y = bug.o bugs.o delay.o fault.o ldt.o mem.o ptrace.o ptrace_user.o \
 	setjmp.o signal.o stub.o stub_segv.o syscalls.o syscall_table.o \
 	sysrq.o ksyms.o tls.o
 
-subarch-obj-y = lib/csum-partial_64.o lib/memcpy_64.o lib/thunk_64.o
+subarch-obj-y = lib/csum-partial_64.o lib/memcpy_64.o lib/thunk_64.o \
+		lib/rwsem_64.o
 subarch-obj-$(CONFIG_MODULES) += kernel/module.o
 
 ldt-y = ../sys-i386/ldt.o
diff --git a/arch/um/sys-x86_64/asm/elf.h b/arch/um/sys-x86_64/asm/elf.h
index 04b9e87c8da..d760967f33a 100644
--- a/arch/um/sys-x86_64/asm/elf.h
+++ b/arch/um/sys-x86_64/asm/elf.h
@@ -95,6 +95,8 @@ typedef struct user_i387_struct elf_fpregset_t;
 	(pr_reg)[25] = 0;					\
 	(pr_reg)[26] = 0;
 
+struct task_struct;
+
 extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
 
 #define ELF_CORE_COPY_FPREGS(t, fpu) elf_core_copy_fpregs(t, fpu)
@@ -104,7 +106,6 @@ extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
         clear_thread_flag(TIF_IA32);
 #endif
 
-#define USE_ELF_CORE_DUMP
 #define ELF_EXEC_PAGESIZE 4096
 
 #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c
index f3458d7d1c5..f43613643cd 100644
--- a/arch/um/sys-x86_64/ptrace.c
+++ b/arch/um/sys-x86_64/ptrace.c
@@ -175,19 +175,18 @@ int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 	return restore_fp_registers(userspace_pid[cpu], fpregs);
 }
 
-long subarch_ptrace(struct task_struct *child, long request, long addr,
-		    long data)
+long subarch_ptrace(struct task_struct *child, long request,
+		    unsigned long addr, unsigned long data)
 {
 	int ret = -EIO;
+	void __user *datap = (void __user *) data;
 
 	switch (request) {
 	case PTRACE_GETFPXREGS: /* Get the child FPU state. */
-		ret = get_fpregs((struct user_i387_struct __user *) data,
-				 child);
+		ret = get_fpregs(datap, child);
 		break;
 	case PTRACE_SETFPXREGS: /* Set the child FPU state. */
-		ret = set_fpregs((struct user_i387_struct __user *) data,
-				 child);
+		ret = set_fpregs(datap, child);
 		break;
 	}
 
diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c
index 1a899a7ed7a..b6b65c7c7a7 100644
--- a/arch/um/sys-x86_64/signal.c
+++ b/arch/um/sys-x86_64/signal.c
@@ -6,6 +6,7 @@
 
 #include <linux/personality.h>
 #include <linux/ptrace.h>
+#include <linux/kernel.h>
 #include <asm/unistd.h>
 #include <asm/uaccess.h>
 #include <asm/ucontext.h>
@@ -165,8 +166,6 @@ struct rt_sigframe
 	struct _fpstate fpstate;
 };
 
-#define round_down(m, n) (((m) / (n)) * (n))
-
 int setup_signal_stack_si(unsigned long stack_top, int sig,
 			  struct k_sigaction *ka, struct pt_regs * regs,
 			  siginfo_t *info, sigset_t *set)
diff --git a/arch/um/sys-x86_64/syscall_table.c b/arch/um/sys-x86_64/syscall_table.c
index dd21d69715e..47d469e7e7c 100644
--- a/arch/um/sys-x86_64/syscall_table.c
+++ b/arch/um/sys-x86_64/syscall_table.c
@@ -26,11 +26,6 @@
 
 /* On UML we call it this way ("old" means it's not mmap2) */
 #define sys_mmap old_mmap
-/*
- * On x86-64 sys_uname is actually sys_newuname plus a compatibility trick.
- * See arch/x86_64/kernel/sys_x86_64.c
- */
-#define sys_uname sys_uname64
 
 #define stub_clone sys_clone
 #define stub_fork sys_fork
diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c
index f1199fd34d3..f3d82bb6e15 100644
--- a/arch/um/sys-x86_64/syscalls.c
+++ b/arch/um/sys-x86_64/syscalls.c
@@ -12,20 +12,6 @@
 #include "asm/uaccess.h"
 #include "os.h"
 
-asmlinkage long sys_uname64(struct new_utsname __user * name)
-{
-	int err;
-
-	down_read(&uts_sem);
-	err = copy_to_user(name, utsname(), sizeof (*name));
-	up_read(&uts_sem);
-
-	if (personality(current->personality) == PER_LINUX32)
-		err |= copy_to_user(&name->machine, "i686", 5);
-
-	return err ? -EFAULT : 0;
-}
-
 long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr)
 {
 	unsigned long *ptr = addr, tmp;
author	Paul Mundt <lethal@linux-sh.org>	2011-01-13 15:06:28 +0900
committer	Paul Mundt <lethal@linux-sh.org>	2011-01-13 15:06:28 +0900
commit	f43dc23d5ea91fca257be02138a255f02d98e806 (patch)
tree	b29722f6e965316e90ac97abf79923ced250dc21 /arch/um
parent	f8e53553f452dcbf67cb89c8cba63a1cd6eb4cc0 (diff)
parent	4162cf64973df51fc885825bc9ca4d055891c49f (diff)