merge by hand - fix up rejections in Documentation/DocBook/Makefile

33 files changed, 256 insertions, 569 deletions

diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index dc796c1bf39..9736ca27c5f 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -4,13 +4,13 @@
 #
 
 extra-y := vmlinux.lds
-clean-files := vmlinux.lds.S config.tmp
+clean-files :=
 
-obj-y = checksum.o config.o exec_kern.o exitcode.o \
+obj-y = config.o exec_kern.o exitcode.o \
 	helper.o init_task.o irq.o irq_user.o ksyms.o main.o mem.o mem_user.o \
 	physmem.o process.o process_kern.o ptrace.o reboot.o resource.o \
 	sigio_user.o sigio_kern.o signal_kern.o signal_user.o smp.o \
-	syscall_kern.o sysrq.o sys_call_table.o tempfile.o time.o time_kern.o \
+	syscall_kern.o sysrq.o tempfile.o time.o time_kern.o \
 	tlb.o trap_kern.o trap_user.o uaccess_user.o um_arch.o umid.o \
 	user_util.o
 
@@ -23,18 +23,14 @@ obj-$(CONFIG_SYSCALL_DEBUG) += syscall_user.o
 obj-$(CONFIG_MODE_TT) += tt/
 obj-$(CONFIG_MODE_SKAS) += skas/
 
-# This needs be compiled with frame pointers regardless of how the rest of the
-# kernel is built.
-CFLAGS_frame.o := -fno-omit-frame-pointer
-
 user-objs-$(CONFIG_TTY_LOG) += tty_log.o
 
 USER_OBJS := $(user-objs-y) config.o helper.o main.o process.o tempfile.o \
-	time.o tty_log.o umid.o user_util.o frame.o
+	time.o tty_log.o umid.o user_util.o
 
 include arch/um/scripts/Makefile.rules
 
-targets += config.c
+targets := config.c config.tmp
 
 # Be careful with the below Sed code - sed is pitfall-rich!
 # We use sed to lower build requirements, for "embedded" builders for instance.
@@ -53,6 +49,7 @@ quiet_cmd_quote2 = QUOTE   $@
       cmd_quote2 = sed -e '/CONFIG/{'          \
 		  -e 's/"CONFIG"\;/""/'        \
 		  -e 'r $(obj)/config.tmp'     \
-		  -e 'a""\;'                   \
+		  -e 'a \'                     \
+		  -e '""\;'                    \
 		  -e '}'                       \
 		  $< > $@
diff --git a/arch/um/kernel/checksum.c b/arch/um/kernel/checksum.c
index e69b2be951d..e69de29bb2d 100644
--- a/arch/um/kernel/checksum.c
+++ b/arch/um/kernel/checksum.c
@@ -1,36 +0,0 @@
-#include "asm/uaccess.h"
-#include "linux/errno.h"
-#include "linux/module.h"
-
-unsigned int arch_csum_partial(const unsigned char *buff, int len, int sum);
-
-unsigned int csum_partial(unsigned char *buff, int len, int sum)
-{
-        return arch_csum_partial(buff, len, sum);
-}
-
-EXPORT_SYMBOL(csum_partial);
-
-unsigned int csum_partial_copy_to(const unsigned char *src,
-                                  unsigned char __user *dst, int len, int sum,
-                                  int *err_ptr)
-{
-        if(copy_to_user(dst, src, len)){
-                *err_ptr = -EFAULT;
-                return(-1);
-        }
-
-        return(arch_csum_partial(src, len, sum));
-}
-
-unsigned int csum_partial_copy_from(const unsigned char __user *src,
-                                    unsigned char *dst,	int len, int sum,
-                                    int *err_ptr)
-{
-        if(copy_from_user(dst, src, len)){
-                *err_ptr = -EFAULT;
-                return(-1);
-        }
-
-        return arch_csum_partial(dst, len, sum);
-}
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index d71e8f00810..d44fb528254 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -163,7 +163,6 @@ void __init init_IRQ(void)
 		irq_desc[i].handler = &SIGIO_irq_type;
 		enable_irq(i);
 	}
-	init_irq_signals(0);
 }
 
 /*
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index b41d3397d07..78d69dc74b2 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -10,7 +10,6 @@
 #include "linux/spinlock.h"
 #include "linux/highmem.h"
 #include "asm/current.h"
-#include "asm/delay.h"
 #include "asm/processor.h"
 #include "asm/unistd.h"
 #include "asm/pgalloc.h"
@@ -28,8 +27,6 @@ EXPORT_SYMBOL(uml_physmem);
 EXPORT_SYMBOL(set_signals);
 EXPORT_SYMBOL(get_signals);
 EXPORT_SYMBOL(kernel_thread);
-EXPORT_SYMBOL(__const_udelay);
-EXPORT_SYMBOL(__udelay);
 EXPORT_SYMBOL(sys_waitpid);
 EXPORT_SYMBOL(task_size);
 EXPORT_SYMBOL(flush_tlb_range);
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index f76a2692adc..51f8e5a8ac6 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -65,8 +65,6 @@ void init_new_thread_signals(int altstack)
 		    SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
 	set_handler(SIGBUS, (__sighandler_t) sig_handler, flags, 
 		    SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
-	set_handler(SIGWINCH, (__sighandler_t) sig_handler, flags, 
-		    SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
 	set_handler(SIGUSR2, (__sighandler_t) sig_handler, 
 		    flags, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, SIGVTALRM, -1);
 	signal(SIGHUP, SIG_IGN);
diff --git a/arch/um/kernel/process_kern.c b/arch/um/kernel/process_kern.c
index 1d719d5b4bb..c1adf7ba3fd 100644
--- a/arch/um/kernel/process_kern.c
+++ b/arch/um/kernel/process_kern.c
@@ -115,16 +115,6 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
 	return(pid);
 }
 
-void switch_mm(struct mm_struct *prev, struct mm_struct *next, 
-	       struct task_struct *tsk)
-{
-	int cpu = smp_processor_id();
-
-	if (prev != next) 
-		cpu_clear(cpu, prev->cpu_vm_mask);
-	cpu_set(cpu, next->cpu_vm_mask);
-}
-
 void set_current(void *t)
 {
 	struct task_struct *task = t;
@@ -152,7 +142,6 @@ void release_thread(struct task_struct *task)
  
 void exit_thread(void)
 {
-	CHOOSE_MODE(exit_thread_tt(), exit_thread_skas());
 	unprotect_stack((unsigned long) current_thread);
 }
  
@@ -161,10 +150,6 @@ void *get_current(void)
 	return(current);
 }
 
-void prepare_to_copy(struct task_struct *tsk)
-{
-}
-
 int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
 		unsigned long stack_top, struct task_struct * p, 
 		struct pt_regs *regs)
@@ -480,12 +465,21 @@ int singlestepping(void * t)
 	return 2;
 }
 
+/*
+ * Only x86 and x86_64 have an arch_align_stack().
+ * All other arches have "#define arch_align_stack(x) (x)"
+ * in their asm/system.h
+ * As this is included in UML from asm-um/system-generic.h,
+ * we can use it to behave as the subarch does.
+ */
+#ifndef arch_align_stack
 unsigned long arch_align_stack(unsigned long sp)
 {
 	if (randomize_va_space)
 		sp -= get_random_int() % 8192;
 	return sp & ~0xf;
 }
+#endif
 
 
 /*
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 3a99ee6d94e..2b75d8d9ba7 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -19,15 +19,30 @@
 #include "skas_ptrace.h"
 #include "sysdep/ptrace.h"
 
+static inline void set_singlestepping(struct task_struct *child, int on)
+{
+        if (on)
+                child->ptrace |= PT_DTRACE;
+        else
+                child->ptrace &= ~PT_DTRACE;
+        child->thread.singlestep_syscall = 0;
+
+#ifdef SUBARCH_SET_SINGLESTEPPING
+        SUBARCH_SET_SINGLESTEPPING(child, on)
+#endif
+                }
+
 /*
  * Called by kernel/ptrace.c when detaching..
  */
 void ptrace_disable(struct task_struct *child)
 { 
-	child->ptrace &= ~PT_DTRACE;
-	child->thread.singlestep_syscall = 0;
+        set_singlestepping(child,0);
 }
 
+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 sys_ptrace(long request, long pid, long addr, long data)
 {
 	struct task_struct *child;
@@ -67,6 +82,10 @@ long sys_ptrace(long request, long pid, long addr, long data)
 		goto out_tsk;
 	}
 
+#ifdef SUBACH_PTRACE_SPECIAL
+        SUBARCH_PTRACE_SPECIAL(child,request,addr,data)
+#endif
+
 	ret = ptrace_check_attach(child, request == PTRACE_KILL);
 	if (ret < 0)
 		goto out_tsk;
@@ -87,26 +106,9 @@ long sys_ptrace(long request, long pid, long addr, long data)
 	}
 
 	/* read the word at location addr in the USER area. */
-	case PTRACE_PEEKUSR: {
-		unsigned long tmp;
-
-		ret = -EIO;
-		if ((addr & 3) || addr < 0) 
-			break;
-
-		tmp = 0;  /* Default return condition */
-		if(addr < MAX_REG_OFFSET){
-			tmp = getreg(child, addr);
-		}
-		else if((addr >= offsetof(struct user, u_debugreg[0])) &&
-			(addr <= offsetof(struct user, u_debugreg[7]))){
-			addr -= offsetof(struct user, u_debugreg[0]);
-			addr = addr >> 2;
-			tmp = child->thread.arch.debugregs[addr];
-		}
-		ret = put_user(tmp, (unsigned long __user *) data);
-		break;
-	}
+        case PTRACE_PEEKUSR:
+                ret = peek_user(child, addr, data);
+                break;
 
 	/* when I and D space are separate, this will have to be fixed. */
 	case PTRACE_POKETEXT: /* write the word at location addr. */
@@ -119,35 +121,16 @@ long sys_ptrace(long request, long pid, long addr, long data)
 		break;
 
 	case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
-		ret = -EIO;
-		if ((addr & 3) || addr < 0)
-			break;
-
-		if (addr < MAX_REG_OFFSET) {
-			ret = putreg(child, addr, data);
-			break;
-		}
-#if 0 /* XXX x86_64 */
-		else if((addr >= offsetof(struct user, u_debugreg[0])) &&
-			(addr <= offsetof(struct user, u_debugreg[7]))){
-			  addr -= offsetof(struct user, u_debugreg[0]);
-			  addr = addr >> 2;
-			  if((addr == 4) || (addr == 5)) break;
-			  child->thread.arch.debugregs[addr] = data;
-			  ret = 0;
-		}
-#endif
-
-		break;
+                ret = poke_user(child, addr, data);
+                break;
 
 	case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
 	case PTRACE_CONT: { /* restart after signal. */
 		ret = -EIO;
-		if ((unsigned long) data > _NSIG)
+		if (!valid_signal(data))
 			break;
 
-		child->ptrace &= ~PT_DTRACE;
-		child->thread.singlestep_syscall = 0;
+                set_singlestepping(child, 0);
 		if (request == PTRACE_SYSCALL) {
 			set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
 		}
@@ -170,8 +153,7 @@ long sys_ptrace(long request, long pid, long addr, long data)
 		if (child->exit_state == EXIT_ZOMBIE)	/* already dead */
 			break;
 
-		child->ptrace &= ~PT_DTRACE;
-		child->thread.singlestep_syscall = 0;
+                set_singlestepping(child, 0);
 		child->exit_code = SIGKILL;
 		wake_up_process(child);
 		break;
@@ -179,11 +161,10 @@ long sys_ptrace(long request, long pid, long addr, long data)
 
 	case PTRACE_SINGLESTEP: {  /* set the trap flag. */
 		ret = -EIO;
-		if ((unsigned long) data > _NSIG)
+		if (!valid_signal(data))
 			break;
 		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		child->ptrace |= PT_DTRACE;
-		child->thread.singlestep_syscall = 0;
+                set_singlestepping(child, 1);
 		child->exit_code = data;
 		/* give it a chance to run. */
 		wake_up_process(child);
@@ -250,23 +231,19 @@ long sys_ptrace(long request, long pid, long addr, long data)
 		break;
 #endif
 	case PTRACE_FAULTINFO: {
-		struct ptrace_faultinfo fault;
-
-		fault = ((struct ptrace_faultinfo) 
-			{ .is_write	= child->thread.err,
-			  .addr		= child->thread.cr2 });
-		ret = copy_to_user((unsigned long __user *) data, &fault,
-				   sizeof(fault));
+                /* Take the info from thread->arch->faultinfo,
+                 * but transfer max. sizeof(struct ptrace_faultinfo).
+                 * On i386, ptrace_faultinfo is smaller!
+                 */
+                ret = copy_to_user((unsigned long __user *) data,
+                                   &child->thread.arch.faultinfo,
+                                   sizeof(struct ptrace_faultinfo));
 		if(ret)
 			break;
 		break;
 	}
-	case PTRACE_SIGPENDING:
-		ret = copy_to_user((unsigned long __user *) data,
-				   &child->pending.signal,
-				   sizeof(child->pending.signal));
-		break;
 
+#ifdef PTRACE_LDT
 	case PTRACE_LDT: {
 		struct ptrace_ldt ldt;
 
@@ -282,6 +259,7 @@ long sys_ptrace(long request, long pid, long addr, long data)
 		ret = -EIO;
 		break;
 	}
+#endif
 #ifdef CONFIG_PROC_MM
 	case PTRACE_SWITCH_MM: {
 		struct mm_struct *old = child->mm;
@@ -337,15 +315,18 @@ void syscall_trace(union uml_pt_regs *regs, int entryexit)
 
 	if (unlikely(current->audit_context)) {
 		if (!entryexit)
-			audit_syscall_entry(current, 
-					    UPT_SYSCALL_NR(&regs->regs),
-					    UPT_SYSCALL_ARG1(&regs->regs),
-					    UPT_SYSCALL_ARG2(&regs->regs),
-					    UPT_SYSCALL_ARG3(&regs->regs),
-					    UPT_SYSCALL_ARG4(&regs->regs));
-		else
-			audit_syscall_exit(current, 
-					   UPT_SYSCALL_RET(&regs->regs));
+			audit_syscall_entry(current,
+                                            HOST_AUDIT_ARCH,
+					    UPT_SYSCALL_NR(regs),
+					    UPT_SYSCALL_ARG1(regs),
+					    UPT_SYSCALL_ARG2(regs),
+					    UPT_SYSCALL_ARG3(regs),
+					    UPT_SYSCALL_ARG4(regs));
+		else {
+                        int res = UPT_SYSCALL_RET(regs);
+			audit_syscall_exit(current, AUDITSC_RESULT(res),
+                                           res);
+                }
 	}
 
 	/* Fake a debug trap */
diff --git a/arch/um/kernel/sigio_user.c b/arch/um/kernel/sigio_user.c
index 668df13d8c9..e89218958f3 100644
--- a/arch/um/kernel/sigio_user.c
+++ b/arch/um/kernel/sigio_user.c
@@ -182,6 +182,7 @@ static int write_sigio_thread(void *unused)
 	int i, n, respond_fd;
 	char c;
 
+        signal(SIGWINCH, SIG_IGN);
 	fds = &current_poll;
 	while(1){
 		n = poll(fds->poll, fds->used, -1);
diff --git a/arch/um/kernel/skas/include/mode_kern-skas.h b/arch/um/kernel/skas/include/mode_kern-skas.h
index 94c56496237..e4849002811 100644
--- a/arch/um/kernel/skas/include/mode_kern-skas.h
+++ b/arch/um/kernel/skas/include/mode_kern-skas.h
@@ -18,7 +18,6 @@ extern int copy_thread_skas(int nr, unsigned long clone_flags,
 			    unsigned long sp, unsigned long stack_top,
 			    struct task_struct *p, struct pt_regs *regs);
 extern void release_thread_skas(struct task_struct *task);
-extern void exit_thread_skas(void);
 extern void initial_thread_cb_skas(void (*proc)(void *), void *arg);
 extern void init_idle_skas(void);
 extern void flush_tlb_kernel_range_skas(unsigned long start,
diff --git a/arch/um/kernel/skas/include/skas.h b/arch/um/kernel/skas/include/skas.h
index f0702c2c720..96b51dba347 100644
--- a/arch/um/kernel/skas/include/skas.h
+++ b/arch/um/kernel/skas/include/skas.h
@@ -27,9 +27,10 @@ extern void map(int fd, unsigned long virt, unsigned long len, int r, int w,
 extern int unmap(int fd, void *addr, unsigned long len);
 extern int protect(int fd, unsigned long addr, unsigned long len, 
 		   int r, int w, int x);
-extern void user_signal(int sig, union uml_pt_regs *regs);
+extern void user_signal(int sig, union uml_pt_regs *regs, int pid);
 extern int new_mm(int from);
 extern void start_userspace(int cpu);
+extern void get_skas_faultinfo(int pid, struct faultinfo * fi);
 extern long execute_syscall_skas(void *r);
 
 #endif
diff --git a/arch/um/kernel/skas/include/uaccess-skas.h b/arch/um/kernel/skas/include/uaccess-skas.h
index 11986c9b9dd..cd6c280482c 100644
--- a/arch/um/kernel/skas/include/uaccess-skas.h
+++ b/arch/um/kernel/skas/include/uaccess-skas.h
@@ -19,7 +19,7 @@
 	  ((unsigned long) (addr) + (size) >= (unsigned long)(addr))))
 
 static inline int verify_area_skas(int type, const void * addr,
-				   unsigned long size)
+                                   unsigned long size)
 {
 	return(access_ok_skas(type, addr, size) ? 0 : -EFAULT);
 }
diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c
index b4ffaaa8124..773cd2b525f 100644
--- a/arch/um/kernel/skas/process.c
+++ b/arch/um/kernel/skas/process.c
@@ -4,6 +4,7 @@
  */
 
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 #include <errno.h>
 #include <signal.h>
@@ -27,27 +28,37 @@
 #include "chan_user.h"
 #include "signal_user.h"
 #include "registers.h"
+#include "process.h"
 
 int is_skas_winch(int pid, int fd, void *data)
 {
-	if(pid != os_getpid())
+        if(pid != os_getpgrp())
 		return(0);
 
 	register_winch_irq(-1, fd, -1, data);
 	return(1);
 }
 
-static void handle_segv(int pid)
+void get_skas_faultinfo(int pid, struct faultinfo * fi)
 {
-	struct ptrace_faultinfo fault;
 	int err;
 
-	err = ptrace(PTRACE_FAULTINFO, pid, 0, &fault);
+        err = ptrace(PTRACE_FAULTINFO, pid, 0, fi);
 	if(err)
-		panic("handle_segv - PTRACE_FAULTINFO failed, errno = %d\n",
-		      errno);
+                panic("get_skas_faultinfo - PTRACE_FAULTINFO failed, "
+                      "errno = %d\n", errno);
+
+        /* Special handling for i386, which has different structs */
+        if (sizeof(struct ptrace_faultinfo) < sizeof(struct faultinfo))
+                memset((char *)fi + sizeof(struct ptrace_faultinfo), 0,
+                       sizeof(struct faultinfo) -
+                       sizeof(struct ptrace_faultinfo));
+}
 
-	segv(fault.addr, 0, FAULT_WRITE(fault.is_write), 1, NULL);
+static void handle_segv(int pid, union uml_pt_regs * regs)
+{
+        get_skas_faultinfo(pid, &regs->skas.faultinfo);
+        segv(regs->skas.faultinfo, 0, 1, NULL);
 }
 
 /*To use the same value of using_sysemu as the caller, ask it that value (in local_using_sysemu)*/
@@ -163,7 +174,7 @@ void userspace(union uml_pt_regs *regs)
 		if(WIFSTOPPED(status)){
 		  	switch(WSTOPSIG(status)){
 			case SIGSEGV:
-				handle_segv(pid);
+                                handle_segv(pid, regs);
 				break;
 			case SIGTRAP + 0x80:
 			        handle_trap(pid, regs, local_using_sysemu);
@@ -177,7 +188,7 @@ void userspace(union uml_pt_regs *regs)
 			case SIGBUS:
 			case SIGFPE:
 			case SIGWINCH:
-				user_signal(WSTOPSIG(status), regs);
+                                user_signal(WSTOPSIG(status), regs, pid);
 				break;
 			default:
 			        printk("userspace - child stopped with signal "
@@ -190,6 +201,11 @@ void userspace(union uml_pt_regs *regs)
 		}
 	}
 }
+#define INIT_JMP_NEW_THREAD 0
+#define INIT_JMP_REMOVE_SIGSTACK 1
+#define INIT_JMP_CALLBACK 2
+#define INIT_JMP_HALT 3
+#define INIT_JMP_REBOOT 4
 
 void new_thread(void *stack, void **switch_buf_ptr, void **fork_buf_ptr,
 		void (*handler)(int))
@@ -225,7 +241,7 @@ void thread_wait(void *sw, void *fb)
 	*switch_buf = &buf;
 	fork_buf = fb;
 	if(sigsetjmp(buf, 1) == 0)
-		siglongjmp(*fork_buf, 1);
+		siglongjmp(*fork_buf, INIT_JMP_REMOVE_SIGSTACK);
 }
 
 void switch_threads(void *me, void *next)
@@ -249,23 +265,31 @@ int start_idle_thread(void *stack, void *switch_buf_ptr, void **fork_buf_ptr)
 	sigjmp_buf **switch_buf = switch_buf_ptr;
 	int n;
 
+	set_handler(SIGWINCH, (__sighandler_t) sig_handler,
+		    SA_ONSTACK | SA_RESTART, SIGUSR1, SIGIO, SIGALRM,
+		    SIGVTALRM, -1);
+
 	*fork_buf_ptr = &initial_jmpbuf;
 	n = sigsetjmp(initial_jmpbuf, 1);
-	if(n == 0)
-		new_thread_proc((void *) stack, new_thread_handler);
-	else if(n == 1)
-		remove_sigstack();
-	else if(n == 2){
+        switch(n){
+        case INIT_JMP_NEW_THREAD:
+                new_thread_proc((void *) stack, new_thread_handler);
+                break;
+        case INIT_JMP_REMOVE_SIGSTACK:
+                remove_sigstack();
+                break;
+        case INIT_JMP_CALLBACK:
 		(*cb_proc)(cb_arg);
 		siglongjmp(*cb_back, 1);
-	}
-	else if(n == 3){
+                break;
+        case INIT_JMP_HALT:
 		kmalloc_ok = 0;
 		return(0);
-	}
-	else if(n == 4){
+        case INIT_JMP_REBOOT:
 		kmalloc_ok = 0;
 		return(1);
+        default:
+                panic("Bad sigsetjmp return in start_idle_thread - %d\n", n);
 	}
 	siglongjmp(**switch_buf, 1);
 }
@@ -290,7 +314,7 @@ void initial_thread_cb_skas(void (*proc)(void *), void *arg)
 
 	block_signals();
 	if(sigsetjmp(here, 1) == 0)
-		siglongjmp(initial_jmpbuf, 2);
+		siglongjmp(initial_jmpbuf, INIT_JMP_CALLBACK);
 	unblock_signals();
 
 	cb_proc = NULL;
@@ -301,13 +325,13 @@ void initial_thread_cb_skas(void (*proc)(void *), void *arg)
 void halt_skas(void)
 {
 	block_signals();
-	siglongjmp(initial_jmpbuf, 3);
+	siglongjmp(initial_jmpbuf, INIT_JMP_HALT);
 }
 
 void reboot_skas(void)
 {
 	block_signals();
-	siglongjmp(initial_jmpbuf, 4);
+	siglongjmp(initial_jmpbuf, INIT_JMP_REBOOT);
 }
 
 void switch_mm_skas(int mm_fd)
diff --git a/arch/um/kernel/skas/process_kern.c b/arch/um/kernel/skas/process_kern.c
index 5d096ea63b9..ab5d3271da0 100644
--- a/arch/um/kernel/skas/process_kern.c
+++ b/arch/um/kernel/skas/process_kern.c
@@ -83,10 +83,6 @@ void release_thread_skas(struct task_struct *task)
 {
 }
 
-void exit_thread_skas(void)
-{
-}
-
 void fork_handler(int sig)
 {
         change_sig(SIGUSR1, 1);
diff --git a/arch/um/kernel/skas/trap_user.c b/arch/um/kernel/skas/trap_user.c
index 8e9b46d4702..0dee1d95c80 100644
--- a/arch/um/kernel/skas/trap_user.c
+++ b/arch/um/kernel/skas/trap_user.c
@@ -5,12 +5,15 @@
 
 #include <signal.h>
 #include <errno.h>
-#include "sysdep/ptrace.h"
 #include "signal_user.h"
 #include "user_util.h"
 #include "kern_util.h"
 #include "task.h"
 #include "sigcontext.h"
+#include "skas.h"
+#include "ptrace_user.h"
+#include "sysdep/ptrace.h"
+#include "sysdep/ptrace_user.h"
 
 void sig_handler_common_skas(int sig, void *sc_ptr)
 {
@@ -31,9 +34,11 @@ void sig_handler_common_skas(int sig, void *sc_ptr)
 	r = &TASK_REGS(get_current())->skas;
 	save_user = r->is_user;
 	r->is_user = 0;
-	r->fault_addr = SC_FAULT_ADDR(sc);
-	r->fault_type = SC_FAULT_TYPE(sc);
-	r->trap_type = SC_TRAP_TYPE(sc);
+        if ( sig == SIGFPE || sig == SIGSEGV ||
+             sig == SIGBUS || sig == SIGILL ||
+             sig == SIGTRAP ) {
+                GET_FAULTINFO_FROM_SC(r->faultinfo, sc);
+        }
 
 	change_sig(SIGUSR1, 1);
 	info = &sig_info[sig];
@@ -45,14 +50,17 @@ void sig_handler_common_skas(int sig, void *sc_ptr)
 	r->is_user = save_user;
 }
 
-void user_signal(int sig, union uml_pt_regs *regs)
+extern int ptrace_faultinfo;
+
+void user_signal(int sig, union uml_pt_regs *regs, int pid)
 {
 	struct signal_info *info;
+        int segv = ((sig == SIGFPE) || (sig == SIGSEGV) || (sig == SIGBUS) ||
+                    (sig == SIGILL) || (sig == SIGTRAP));
 
 	regs->skas.is_user = 1;
-	regs->skas.fault_addr = 0;
-	regs->skas.fault_type = 0;
-	regs->skas.trap_type = 0;
+	if (segv)
+		get_skas_faultinfo(pid, &regs->skas.faultinfo);
 	info = &sig_info[sig];
 	(*info->handler)(sig, regs);
 
diff --git a/arch/um/kernel/skas/uaccess.c b/arch/um/kernel/skas/uaccess.c
index 7575ec489b6..75195281081 100644
--- a/arch/um/kernel/skas/uaccess.c
+++ b/arch/um/kernel/skas/uaccess.c
@@ -3,6 +3,7 @@
  * Licensed under the GPL
  */
 
+#include "linux/compiler.h"
 #include "linux/stddef.h"
 #include "linux/kernel.h"
 #include "linux/string.h"
@@ -28,9 +29,12 @@ static unsigned long maybe_map(unsigned long virt, int is_write)
 	if(IS_ERR(phys) || (is_write && !pte_write(pte))){
 		err = handle_page_fault(virt, 0, is_write, 1, &dummy_code);
 		if(err)
-			return(0);
+			return(-1UL);
 		phys = um_virt_to_phys(current, virt, NULL);
 	}
+        if(IS_ERR(phys))
+                phys = (void *) -1;
+
 	return((unsigned long) phys);
 }
 
@@ -41,7 +45,7 @@ static int do_op(unsigned long addr, int len, int is_write,
 	int n;
 
 	addr = maybe_map(addr, is_write);
-	if(addr == -1)
+	if(addr == -1UL)
 		return(-1);
 
 	page = phys_to_page(addr);
@@ -61,8 +65,7 @@ static void do_buffer_op(void *jmpbuf, void *arg_ptr)
 	void *arg;
 	int *res;
 
-	/* Some old gccs recognize __va_copy, but not va_copy */
-	__va_copy(args, *(va_list *)arg_ptr);
+	va_copy(args, *(va_list *)arg_ptr);
 	addr = va_arg(args, unsigned long);
 	len = va_arg(args, int);
 	is_write = va_arg(args, int);
diff --git a/arch/um/kernel/skas/util/Makefile b/arch/um/kernel/skas/util/Makefile
index 17f5909d60f..f7b7eba8334 100644
--- a/arch/um/kernel/skas/util/Makefile
+++ b/arch/um/kernel/skas/util/Makefile
@@ -2,3 +2,4 @@ hostprogs-y		:= mk_ptregs
 always			:= $(hostprogs-y)
 
 mk_ptregs-objs := mk_ptregs-$(SUBARCH).o
+HOSTCFLAGS_mk_ptregs-$(SUBARCH).o := -I$(objtree)/arch/um
diff --git a/arch/um/kernel/skas/util/mk_ptregs-i386.c b/arch/um/kernel/skas/util/mk_ptregs-i386.c
index 0788dd05bca..1f96e1eeb8a 100644
--- a/arch/um/kernel/skas/util/mk_ptregs-i386.c
+++ b/arch/um/kernel/skas/util/mk_ptregs-i386.c
@@ -1,8 +1,7 @@
 #include <stdio.h>
-#include <asm/ptrace.h>
-#include <asm/user.h>
+#include <user-offsets.h>
 
-#define PRINT_REG(name, val) printf("#define HOST_%s %d\n", (name), (val))
+#define SHOW(name) printf("#define %s %d\n", #name, name)
 
 int main(int argc, char **argv)
 {
@@ -12,28 +11,27 @@ int main(int argc, char **argv)
 	printf("#ifndef __SKAS_PT_REGS_\n");
 	printf("#define __SKAS_PT_REGS_\n");
 	printf("\n");
-	printf("#define HOST_FRAME_SIZE %d\n", FRAME_SIZE);
-	printf("#define HOST_FP_SIZE %d\n",
-	       sizeof(struct user_i387_struct) / sizeof(unsigned long));
-	printf("#define HOST_XFP_SIZE %d\n",
-	       sizeof(struct user_fxsr_struct) / sizeof(unsigned long));
+	SHOW(HOST_FRAME_SIZE);
+	SHOW(HOST_FP_SIZE);
+	SHOW(HOST_XFP_SIZE);
+
+	SHOW(HOST_IP);
+	SHOW(HOST_SP);
+	SHOW(HOST_EFLAGS);
+	SHOW(HOST_EAX);
+	SHOW(HOST_EBX);
+	SHOW(HOST_ECX);
+	SHOW(HOST_EDX);
+	SHOW(HOST_ESI);
+	SHOW(HOST_EDI);
+	SHOW(HOST_EBP);
+	SHOW(HOST_CS);
+	SHOW(HOST_SS);
+	SHOW(HOST_DS);
+	SHOW(HOST_FS);
+	SHOW(HOST_ES);
+	SHOW(HOST_GS);
 
-	PRINT_REG("IP", EIP);
-	PRINT_REG("SP", UESP);
-	PRINT_REG("EFLAGS", EFL);
-	PRINT_REG("EAX", EAX);
-	PRINT_REG("EBX", EBX);
-	PRINT_REG("ECX", ECX);
-	PRINT_REG("EDX", EDX);
-	PRINT_REG("ESI", ESI);
-	PRINT_REG("EDI", EDI);
-	PRINT_REG("EBP", EBP);
-	PRINT_REG("CS", CS);
-	PRINT_REG("SS", SS);
-	PRINT_REG("DS", DS);
-	PRINT_REG("FS", FS);
-	PRINT_REG("ES", ES);
-	PRINT_REG("GS", GS);
 	printf("\n");
 	printf("#endif\n");
 	return(0);
diff --git a/arch/um/kernel/skas/util/mk_ptregs-x86_64.c b/arch/um/kernel/skas/util/mk_ptregs-x86_64.c
index 67aee92a70e..5fccbfe35f7 100644
--- a/arch/um/kernel/skas/util/mk_ptregs-x86_64.c
+++ b/arch/um/kernel/skas/util/mk_ptregs-x86_64.c
@@ -5,11 +5,10 @@
  */
 
 #include <stdio.h>
-#define __FRAME_OFFSETS
-#include <asm/ptrace.h>
+#include <user-offsets.h>
 
-#define PRINT_REG(name, val) \
-	printf("#define HOST_%s (%d / sizeof(unsigned long))\n", (name), (val))
+#define SHOW(name) \
+	printf("#define %s (%d / sizeof(unsigned long))\n", #name, name)
 
 int main(int argc, char **argv)
 {
@@ -18,36 +17,35 @@ int main(int argc, char **argv)
 	printf("\n");
 	printf("#ifndef __SKAS_PT_REGS_\n");
 	printf("#define __SKAS_PT_REGS_\n");
-	printf("#define HOST_FRAME_SIZE (%d / sizeof(unsigned long))\n",
-	       FRAME_SIZE);
-	PRINT_REG("RBX", RBX);
-	PRINT_REG("RCX", RCX);
-	PRINT_REG("RDI", RDI);
-	PRINT_REG("RSI", RSI);
-	PRINT_REG("RDX", RDX);
-	PRINT_REG("RBP", RBP);
-	PRINT_REG("RAX", RAX);
-	PRINT_REG("R8", R8);
-	PRINT_REG("R9", R9);
-	PRINT_REG("R10", R10);
-	PRINT_REG("R11", R11);
-	PRINT_REG("R12", R12);
-	PRINT_REG("R13", R13);
-	PRINT_REG("R14", R14);
-	PRINT_REG("R15", R15);
-	PRINT_REG("ORIG_RAX", ORIG_RAX);
-	PRINT_REG("CS", CS);
-	PRINT_REG("SS", SS);
-	PRINT_REG("EFLAGS", EFLAGS);
+	SHOW(HOST_FRAME_SIZE);
+	SHOW(HOST_RBX);
+	SHOW(HOST_RCX);
+	SHOW(HOST_RDI);
+	SHOW(HOST_RSI);
+	SHOW(HOST_RDX);
+	SHOW(HOST_RBP);
+	SHOW(HOST_RAX);
+	SHOW(HOST_R8);
+	SHOW(HOST_R9);
+	SHOW(HOST_R10);
+	SHOW(HOST_R11);
+	SHOW(HOST_R12);
+	SHOW(HOST_R13);
+	SHOW(HOST_R14);
+	SHOW(HOST_R15);
+	SHOW(HOST_ORIG_RAX);
+	SHOW(HOST_CS);
+	SHOW(HOST_SS);
+	SHOW(HOST_EFLAGS);
 #if 0
-	PRINT_REG("FS", FS);
-	PRINT_REG("GS", GS);
-	PRINT_REG("DS", DS);
-	PRINT_REG("ES", ES);
+	SHOW(HOST_FS);
+	SHOW(HOST_GS);
+	SHOW(HOST_DS);
+	SHOW(HOST_ES);
 #endif
 
-	PRINT_REG("IP", RIP);
-	PRINT_REG("SP", RSP);
+	SHOW(HOST_IP);
+	SHOW(HOST_SP);
 	printf("#define HOST_FP_SIZE 0\n");
 	printf("#define HOST_XFP_SIZE 0\n");
 	printf("\n");
diff --git a/arch/um/kernel/sys_call_table.c b/arch/um/kernel/sys_call_table.c
deleted file mode 100644
index 7fc06c85b29..00000000000
--- a/arch/um/kernel/sys_call_table.c
+++ /dev/null
@@ -1,276 +0,0 @@
-/* 
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Copyright 2003 PathScale, Inc.
- * Licensed under the GPL
- */
-
-#include "linux/config.h"
-#include "linux/unistd.h"
-#include "linux/sys.h"
-#include "linux/swap.h"
-#include "linux/syscalls.h"
-#include "linux/sysctl.h"
-#include "asm/signal.h"
-#include "sysdep/syscalls.h"
-#include "kern_util.h"
-
-#ifdef CONFIG_NFSD
-#define NFSSERVCTL sys_nfsservctl
-#else
-#define NFSSERVCTL sys_ni_syscall
-#endif
-
-#define LAST_GENERIC_SYSCALL __NR_keyctl
-
-#if LAST_GENERIC_SYSCALL > LAST_ARCH_SYSCALL
-#define LAST_SYSCALL LAST_GENERIC_SYSCALL
-#else
-#define LAST_SYSCALL LAST_ARCH_SYSCALL
-#endif
-
-extern syscall_handler_t sys_fork;
-extern syscall_handler_t sys_execve;
-extern syscall_handler_t um_time;
-extern syscall_handler_t um_stime;
-extern syscall_handler_t sys_pipe;
-extern syscall_handler_t sys_olduname;
-extern syscall_handler_t sys_sigaction;
-extern syscall_handler_t sys_sigsuspend;
-extern syscall_handler_t old_readdir;
-extern syscall_handler_t sys_uname;
-extern syscall_handler_t sys_ipc;
-extern syscall_handler_t sys_sigreturn;
-extern syscall_handler_t sys_clone;
-extern syscall_handler_t sys_rt_sigreturn;
-extern syscall_handler_t sys_sigaltstack;
-extern syscall_handler_t sys_vfork;
-extern syscall_handler_t old_select;
-extern syscall_handler_t sys_modify_ldt;
-extern syscall_handler_t sys_rt_sigsuspend;
-extern syscall_handler_t sys_mbind;
-extern syscall_handler_t sys_get_mempolicy;
-extern syscall_handler_t sys_set_mempolicy;
-extern syscall_handler_t sys_sys_setaltroot;
-
-syscall_handler_t *sys_call_table[] = {
-	[ __NR_restart_syscall ] = (syscall_handler_t *) sys_restart_syscall,
-	[ __NR_exit ] = (syscall_handler_t *) sys_exit,
-	[ __NR_fork ] = (syscall_handler_t *) sys_fork,
-	[ __NR_read ] = (syscall_handler_t *) sys_read,
-	[ __NR_write ] = (syscall_handler_t *) sys_write,
-
-	/* These three are declared differently in asm/unistd.h */
-	[ __NR_open ] = (syscall_handler_t *) sys_open,
-	[ __NR_close ] = (syscall_handler_t *) sys_close,
-	[ __NR_creat ] = (syscall_handler_t *) sys_creat,
-	[ __NR_link ] = (syscall_handler_t *) sys_link,
-	[ __NR_unlink ] = (syscall_handler_t *) sys_unlink,
-	[ __NR_execve ] = (syscall_handler_t *) sys_execve,
-
-	/* declared differently in kern_util.h */
-	[ __NR_chdir ] = (syscall_handler_t *) sys_chdir,
-	[ __NR_time ] = um_time,
-	[ __NR_mknod ] = (syscall_handler_t *) sys_mknod,
-	[ __NR_chmod ] = (syscall_handler_t *) sys_chmod,
-	[ __NR_lchown ] = (syscall_handler_t *) sys_lchown16,
-	[ __NR_lseek ] = (syscall_handler_t *) sys_lseek,
-	[ __NR_getpid ] = (syscall_handler_t *) sys_getpid,
-	[ __NR_mount ] = (syscall_handler_t *) sys_mount,
-	[ __NR_setuid ] = (syscall_handler_t *) sys_setuid16,
-	[ __NR_getuid ] = (syscall_handler_t *) sys_getuid16,
- 	[ __NR_ptrace ] = (syscall_handler_t *) sys_ptrace,
-	[ __NR_alarm ] = (syscall_handler_t *) sys_alarm,
-	[ __NR_pause ] = (syscall_handler_t *) sys_pause,
-	[ __NR_utime ] = (syscall_handler_t *) sys_utime,
-	[ __NR_access ] = (syscall_handler_t *) sys_access,
-	[ __NR_sync ] = (syscall_handler_t *) sys_sync,
-	[ __NR_kill ] = (syscall_handler_t *) sys_kill,
-	[ __NR_rename ] = (syscall_handler_t *) sys_rename,
-	[ __NR_mkdir ] = (syscall_handler_t *) sys_mkdir,
-	[ __NR_rmdir ] = (syscall_handler_t *) sys_rmdir,
-
-	/* Declared differently in asm/unistd.h */
-	[ __NR_dup ] = (syscall_handler_t *) sys_dup,
-	[ __NR_pipe ] = (syscall_handler_t *) sys_pipe,
-	[ __NR_times ] = (syscall_handler_t *) sys_times,
-	[ __NR_brk ] = (syscall_handler_t *) sys_brk,
-	[ __NR_setgid ] = (syscall_handler_t *) sys_setgid16,
-	[ __NR_getgid ] = (syscall_handler_t *) sys_getgid16,
-	[ __NR_geteuid ] = (syscall_handler_t *) sys_geteuid16,
-	[ __NR_getegid ] = (syscall_handler_t *) sys_getegid16,
-	[ __NR_acct ] = (syscall_handler_t *) sys_acct,
-	[ __NR_umount2 ] = (syscall_handler_t *) sys_umount,
-	[ __NR_ioctl ] = (syscall_handler_t *) sys_ioctl,
-	[ __NR_fcntl ] = (syscall_handler_t *) sys_fcntl,
-	[ __NR_setpgid ] = (syscall_handler_t *) sys_setpgid,
-	[ __NR_umask ] = (syscall_handler_t *) sys_umask,
-	[ __NR_chroot ] = (syscall_handler_t *) sys_chroot,
-	[ __NR_ustat ] = (syscall_handler_t *) sys_ustat,
-	[ __NR_dup2 ] = (syscall_handler_t *) sys_dup2,
-	[ __NR_getppid ] = (syscall_handler_t *) sys_getppid,
-	[ __NR_getpgrp ] = (syscall_handler_t *) sys_getpgrp,
-	[ __NR_setsid ] = (syscall_handler_t *) sys_setsid,
-	[ __NR_setreuid ] = (syscall_handler_t *) sys_setreuid16,
-	[ __NR_setregid ] = (syscall_handler_t *) sys_setregid16,
-	[ __NR_sethostname ] = (syscall_handler_t *) sys_sethostname,
-	[ __NR_setrlimit ] = (syscall_handler_t *) sys_setrlimit,
-	[ __NR_getrlimit ] = (syscall_handler_t *) sys_old_getrlimit,
-	[ __NR_getrusage ] = (syscall_handler_t *) sys_getrusage,
-	[ __NR_gettimeofday ] = (syscall_handler_t *) sys_gettimeofday,
-	[ __NR_settimeofday ] = (syscall_handler_t *) sys_settimeofday,
-	[ __NR_getgroups ] = (syscall_handler_t *) sys_getgroups16,
-	[ __NR_setgroups ] = (syscall_handler_t *) sys_setgroups16,
-	[ __NR_symlink ] = (syscall_handler_t *) sys_symlink,
-	[ __NR_readlink ] = (syscall_handler_t *) sys_readlink,
-	[ __NR_uselib ] = (syscall_handler_t *) sys_uselib,
-	[ __NR_swapon ] = (syscall_handler_t *) sys_swapon,
-	[ __NR_reboot ] = (syscall_handler_t *) sys_reboot,
-	[ __NR_munmap ] = (syscall_handler_t *) sys_munmap,
-	[ __NR_truncate ] = (syscall_handler_t *) sys_truncate,
-	[ __NR_ftruncate ] = (syscall_handler_t *) sys_ftruncate,
-	[ __NR_fchmod ] = (syscall_handler_t *) sys_fchmod,
-	[ __NR_fchown ] = (syscall_handler_t *) sys_fchown16,
-	[ __NR_getpriority ] = (syscall_handler_t *) sys_getpriority,
-	[ __NR_setpriority ] = (syscall_handler_t *) sys_setpriority,
-	[ __NR_statfs ] = (syscall_handler_t *) sys_statfs,
-	[ __NR_fstatfs ] = (syscall_handler_t *) sys_fstatfs,
-	[ __NR_ioperm ] = (syscall_handler_t *) sys_ni_syscall,
-	[ __NR_syslog ] = (syscall_handler_t *) sys_syslog,
-	[ __NR_setitimer ] = (syscall_handler_t *) sys_setitimer,
-	[ __NR_getitimer ] = (syscall_handler_t *) sys_getitimer,
-	[ __NR_stat ] = (syscall_handler_t *) sys_newstat,
-	[ __NR_lstat ] = (syscall_handler_t *) sys_newlstat,
-	[ __NR_fstat ] = (syscall_handler_t *) sys_newfstat,
-	[ __NR_vhangup ] = (syscall_handler_t *) sys_vhangup,
-	[ __NR_wait4 ] = (syscall_handler_t *) sys_wait4,
-	[ __NR_swapoff ] = (syscall_handler_t *) sys_swapoff,
-	[ __NR_sysinfo ] = (syscall_handler_t *) sys_sysinfo,
-	[ __NR_fsync ] = (syscall_handler_t *) sys_fsync,
-	[ __NR_clone ] = (syscall_handler_t *) sys_clone,
-	[ __NR_setdomainname ] = (syscall_handler_t *) sys_setdomainname,
-	[ __NR_uname ] = (syscall_handler_t *) sys_newuname,
-	[ __NR_adjtimex ] = (syscall_handler_t *) sys_adjtimex,
-	[ __NR_mprotect ] = (syscall_handler_t *) sys_mprotect,
-	[ __NR_create_module ] = (syscall_handler_t *) sys_ni_syscall,
-	[ __NR_init_module ] = (syscall_handler_t *) sys_init_module,
-	[ __NR_delete_module ] = (syscall_handler_t *) sys_delete_module,
-	[ __NR_get_kernel_syms ] = (syscall_handler_t *) sys_ni_syscall,
-	[ __NR_quotactl ] = (syscall_handler_t *) sys_quotactl,
-	[ __NR_getpgid ] = (syscall_handler_t *) sys_getpgid,
-	[ __NR_fchdir ] = (syscall_handler_t *) sys_fchdir,
-	[ __NR_sysfs ] = (syscall_handler_t *) sys_sysfs,
-	[ __NR_personality ] = (syscall_handler_t *) sys_personality,
-	[ __NR_afs_syscall ] = (syscall_handler_t *) sys_ni_syscall,
-	[ __NR_setfsuid ] = (syscall_handler_t *) sys_setfsuid16,
-	[ __NR_setfsgid ] = (syscall_handler_t *) sys_setfsgid16,
-	[ __NR_getdents ] = (syscall_handler_t *) sys_getdents,
-	[ __NR_flock ] = (syscall_handler_t *) sys_flock,
-	[ __NR_msync ] = (syscall_handler_t *) sys_msync,
-	[ __NR_readv ] = (syscall_handler_t *) sys_readv,
-	[ __NR_writev ] = (syscall_handler_t *) sys_writev,
-	[ __NR_getsid ] = (syscall_handler_t *) sys_getsid,
-	[ __NR_fdatasync ] = (syscall_handler_t *) sys_fdatasync,
-	[ __NR__sysctl ] = (syscall_handler_t *) sys_sysctl,
-	[ __NR_mlock ] = (syscall_handler_t *) sys_mlock,
-	[ __NR_munlock ] = (syscall_handler_t *) sys_munlock,
-	[ __NR_mlockall ] = (syscall_handler_t *) sys_mlockall,
-	[ __NR_munlockall ] = (syscall_handler_t *) sys_munlockall,
-	[ __NR_sched_setparam ] = (syscall_handler_t *) sys_sched_setparam,
-	[ __NR_sched_getparam ] = (syscall_handler_t *) sys_sched_getparam,
-	[ __NR_sched_setscheduler ] = (syscall_handler_t *) sys_sched_setscheduler,
-	[ __NR_sched_getscheduler ] = (syscall_handler_t *) sys_sched_getscheduler,
-	[ __NR_sched_yield ] = (syscall_handler_t *) yield,
-	[ __NR_sched_get_priority_max ] = (syscall_handler_t *) sys_sched_get_priority_max,
-	[ __NR_sched_get_priority_min ] = (syscall_handler_t *) sys_sched_get_priority_min,
-	[ __NR_sched_rr_get_interval ] = (syscall_handler_t *) sys_sched_rr_get_interval,
-	[ __NR_nanosleep ] = (syscall_handler_t *) sys_nanosleep,
-	[ __NR_mremap ] = (syscall_handler_t *) sys_mremap,
-	[ __NR_setresuid ] = (syscall_handler_t *) sys_setresuid16,
-	[ __NR_getresuid ] = (syscall_handler_t *) sys_getresuid16,
-	[ __NR_query_module ] = (syscall_handler_t *) sys_ni_syscall,
-	[ __NR_poll ] = (syscall_handler_t *) sys_poll,
-	[ __NR_nfsservctl ] = (syscall_handler_t *) NFSSERVCTL,
-	[ __NR_setresgid ] = (syscall_handler_t *) sys_setresgid16,
-	[ __NR_getresgid ] = (syscall_handler_t *) sys_getresgid16,
-	[ __NR_prctl ] = (syscall_handler_t *) sys_prctl,
-	[ __NR_rt_sigreturn ] = (syscall_handler_t *) sys_rt_sigreturn,
-	[ __NR_rt_sigaction ] = (syscall_handler_t *) sys_rt_sigaction,
-	[ __NR_rt_sigprocmask ] = (syscall_handler_t *) sys_rt_sigprocmask,
-	[ __NR_rt_sigpending ] = (syscall_handler_t *) sys_rt_sigpending,
-	[ __NR_rt_sigtimedwait ] = (syscall_handler_t *) sys_rt_sigtimedwait,
-	[ __NR_rt_sigqueueinfo ] = (syscall_handler_t *) sys_rt_sigqueueinfo,
-	[ __NR_rt_sigsuspend ] = (syscall_handler_t *) sys_rt_sigsuspend,
-	[ __NR_pread64 ] = (syscall_handler_t *) sys_pread64,
-	[ __NR_pwrite64 ] = (syscall_handler_t *) sys_pwrite64,
-	[ __NR_chown ] = (syscall_handler_t *) sys_chown16,
-	[ __NR_getcwd ] = (syscall_handler_t *) sys_getcwd,
-	[ __NR_capget ] = (syscall_handler_t *) sys_capget,
-	[ __NR_capset ] = (syscall_handler_t *) sys_capset,
-	[ __NR_sigaltstack ] = (syscall_handler_t *) sys_sigaltstack,
-	[ __NR_sendfile ] = (syscall_handler_t *) sys_sendfile,
-	[ __NR_getpmsg ] = (syscall_handler_t *) sys_ni_syscall,
-	[ __NR_putpmsg ] = (syscall_handler_t *) sys_ni_syscall,
-	[ __NR_vfork ] = (syscall_handler_t *) sys_vfork,
-	[ __NR_getdents64 ] = (syscall_handler_t *) sys_getdents64,
-	[ __NR_gettid ] = (syscall_handler_t *) sys_gettid,
-	[ __NR_readahead ] = (syscall_handler_t *) sys_readahead,
-	[ __NR_setxattr ] = (syscall_handler_t *) sys_setxattr,
-	[ __NR_lsetxattr ] = (syscall_handler_t *) sys_lsetxattr,
-	[ __NR_fsetxattr ] = (syscall_handler_t *) sys_fsetxattr,
-	[ __NR_getxattr ] = (syscall_handler_t *) sys_getxattr,
-	[ __NR_lgetxattr ] = (syscall_handler_t *) sys_lgetxattr,
-	[ __NR_fgetxattr ] = (syscall_handler_t *) sys_fgetxattr,
-	[ __NR_listxattr ] = (syscall_handler_t *) sys_listxattr,
-	[ __NR_llistxattr ] = (syscall_handler_t *) sys_llistxattr,
-	[ __NR_flistxattr ] = (syscall_handler_t *) sys_flistxattr,
-	[ __NR_removexattr ] = (syscall_handler_t *) sys_removexattr,
-	[ __NR_lremovexattr ] = (syscall_handler_t *) sys_lremovexattr,
-	[ __NR_fremovexattr ] = (syscall_handler_t *) sys_fremovexattr,
-	[ __NR_tkill ] = (syscall_handler_t *) sys_tkill,
-	[ __NR_futex ] = (syscall_handler_t *) sys_futex,
-	[ __NR_sched_setaffinity ] = (syscall_handler_t *) sys_sched_setaffinity,
-	[ __NR_sched_getaffinity ] = (syscall_handler_t *) sys_sched_getaffinity,
-	[ __NR_io_setup ] = (syscall_handler_t *) sys_io_setup,
-	[ __NR_io_destroy ] = (syscall_handler_t *) sys_io_destroy,
-	[ __NR_io_getevents ] = (syscall_handler_t *) sys_io_getevents,
-	[ __NR_io_submit ] = (syscall_handler_t *) sys_io_submit,
-	[ __NR_io_cancel ] = (syscall_handler_t *) sys_io_cancel,
-	[ __NR_exit_group ] = (syscall_handler_t *) sys_exit_group,
-	[ __NR_lookup_dcookie ] = (syscall_handler_t *) sys_lookup_dcookie,
-	[ __NR_epoll_create ] = (syscall_handler_t *) sys_epoll_create,
-	[ __NR_epoll_ctl ] = (syscall_handler_t *) sys_epoll_ctl,
-	[ __NR_epoll_wait ] = (syscall_handler_t *) sys_epoll_wait,
-	[ __NR_remap_file_pages ] = (syscall_handler_t *) sys_remap_file_pages,
-	[ __NR_set_tid_address ] = (syscall_handler_t *) sys_set_tid_address,
-	[ __NR_timer_create ] = (syscall_handler_t *) sys_timer_create,
-	[ __NR_timer_settime ] = (syscall_handler_t *) sys_timer_settime,
-	[ __NR_timer_gettime ] = (syscall_handler_t *) sys_timer_gettime,
-	[ __NR_timer_getoverrun ] = (syscall_handler_t *) sys_timer_getoverrun,
-	[ __NR_timer_delete ] = (syscall_handler_t *) sys_timer_delete,
-	[ __NR_clock_settime ] = (syscall_handler_t *) sys_clock_settime,
-	[ __NR_clock_gettime ] = (syscall_handler_t *) sys_clock_gettime,
-	[ __NR_clock_getres ] = (syscall_handler_t *) sys_clock_getres,
-	[ __NR_clock_nanosleep ] = (syscall_handler_t *) sys_clock_nanosleep,
-	[ __NR_tgkill ] = (syscall_handler_t *) sys_tgkill,
-	[ __NR_utimes ] = (syscall_handler_t *) sys_utimes,
-	[ __NR_fadvise64 ] = (syscall_handler_t *) sys_fadvise64,
-	[ __NR_vserver ] = (syscall_handler_t *) sys_ni_syscall,
-	[ __NR_mbind ] = (syscall_handler_t *) sys_mbind,
-	[ __NR_get_mempolicy ] = (syscall_handler_t *) sys_get_mempolicy,
-	[ __NR_set_mempolicy ] = (syscall_handler_t *) sys_set_mempolicy,
-	[ __NR_mq_open ] = (syscall_handler_t *) sys_mq_open,
-	[ __NR_mq_unlink ] = (syscall_handler_t *) sys_mq_unlink,
-	[ __NR_mq_timedsend ] = (syscall_handler_t *) sys_mq_timedsend,
-	[ __NR_mq_timedreceive ] = (syscall_handler_t *) sys_mq_timedreceive,
-	[ __NR_mq_notify ] = (syscall_handler_t *) sys_mq_notify,
-	[ __NR_mq_getsetattr ] = (syscall_handler_t *) sys_mq_getsetattr,
-	[ __NR_kexec_load ] = (syscall_handler_t *) sys_ni_syscall,
-	[ __NR_waitid ] = (syscall_handler_t *) sys_waitid,
-	[ __NR_add_key ] = (syscall_handler_t *) sys_add_key,
-	[ __NR_request_key ] = (syscall_handler_t *) sys_request_key,
-	[ __NR_keyctl ] = (syscall_handler_t *) sys_keyctl,
-
-	ARCH_SYSCALLS
-	[ LAST_SYSCALL + 1 ... NR_syscalls ] = 
-		(syscall_handler_t *) sys_ni_syscall
-};
diff --git a/arch/um/kernel/syscall_kern.c b/arch/um/kernel/syscall_kern.c
index 42731e04f50..b7a55251e89 100644
--- a/arch/um/kernel/syscall_kern.c
+++ b/arch/um/kernel/syscall_kern.c
@@ -17,7 +17,6 @@
 #include "linux/utime.h"
 #include "asm/mman.h"
 #include "asm/uaccess.h"
-#include "asm/ipc.h"
 #include "kern_util.h"
 #include "user_util.h"
 #include "sysdep/syscalls.h"
diff --git a/arch/um/kernel/time_kern.c b/arch/um/kernel/time_kern.c
index 2461cd73ca8..6516fc52afe 100644
--- a/arch/um/kernel/time_kern.c
+++ b/arch/um/kernel/time_kern.c
@@ -48,8 +48,6 @@ static unsigned long long prev_usecs;
 static long long delta;   		/* Deviation per interval */
 #endif
 
-#define MILLION 1000000
-
 void timer_irq(union uml_pt_regs *regs)
 {
 	unsigned long long ticks = 0;
@@ -136,22 +134,6 @@ long um_stime(int __user *tptr)
 	return 0;
 }
 
-void __udelay(unsigned long usecs)
-{
-	int i, n;
-
-	n = (loops_per_jiffy * HZ * usecs) / MILLION;
-	for(i=0;i<n;i++) ;
-}
-
-void __const_udelay(unsigned long usecs)
-{
-	int i, n;
-
-	n = (loops_per_jiffy * HZ * usecs) / MILLION;
-	for(i=0;i<n;i++) ;
-}
-
 void timer_handler(int sig, union uml_pt_regs *regs)
 {
 	local_irq_disable();
diff --git a/arch/um/kernel/trap_kern.c b/arch/um/kernel/trap_kern.c
index 47e766e6ba1..5fca2c61eb9 100644
--- a/arch/um/kernel/trap_kern.c
+++ b/arch/um/kernel/trap_kern.c
@@ -48,7 +48,7 @@ int handle_page_fault(unsigned long address, unsigned long ip,
 		goto good_area;
 	else if(!(vma->vm_flags & VM_GROWSDOWN)) 
 		goto out;
-	else if(!ARCH_IS_STACKGROW(address))
+	else if(is_user && !ARCH_IS_STACKGROW(address))
 		goto out;
 	else if(expand_stack(vma, address)) 
 		goto out;
@@ -133,12 +133,19 @@ static int check_remapped_addr(unsigned long address, int is_write)
 	return(0);
 }
 
-unsigned long segv(unsigned long address, unsigned long ip, int is_write, 
-		   int is_user, void *sc)
+/*
+ * We give a *copy* of the faultinfo in the regs to segv.
+ * This must be done, since nesting SEGVs could overwrite
+ * the info in the regs. A pointer to the info then would
+ * give us bad data!
+ */
+unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user, void *sc)
 {
 	struct siginfo si;
 	void *catcher;
 	int err;
+        int is_write = FAULT_WRITE(fi);
+        unsigned long address = FAULT_ADDRESS(fi);
 
         if(!is_user && (address >= start_vm) && (address < end_vm)){
                 flush_tlb_kernel_vm();
@@ -159,7 +166,7 @@ unsigned long segv(unsigned long address, unsigned long ip, int is_write,
 	} 
 	else if(current->thread.fault_addr != NULL)
 		panic("fault_addr set but no fault catcher");
-	else if(arch_fixup(ip, sc))
+        else if(!is_user && arch_fixup(ip, sc))
 		return(0);
 
  	if(!is_user) 
@@ -171,6 +178,7 @@ unsigned long segv(unsigned long address, unsigned long ip, int is_write,
 		si.si_errno = 0;
 		si.si_code = BUS_ADRERR;
 		si.si_addr = (void *)address;
+                current->thread.arch.faultinfo = fi;
 		force_sig_info(SIGBUS, &si, current);
 	}
 	else if(err == -ENOMEM){
@@ -180,22 +188,20 @@ unsigned long segv(unsigned long address, unsigned long ip, int is_write,
 	else {
 		si.si_signo = SIGSEGV;
 		si.si_addr = (void *) address;
-		current->thread.cr2 = address;
-		current->thread.err = is_write;
+                current->thread.arch.faultinfo = fi;
 		force_sig_info(SIGSEGV, &si, current);
 	}
 	return(0);
 }
 
-void bad_segv(unsigned long address, unsigned long ip, int is_write)
+void bad_segv(struct faultinfo fi, unsigned long ip)
 {
 	struct siginfo si;
 
 	si.si_signo = SIGSEGV;
 	si.si_code = SEGV_ACCERR;
-	si.si_addr = (void *) address;
-	current->thread.cr2 = address;
-	current->thread.err = is_write;
+        si.si_addr = (void *) FAULT_ADDRESS(fi);
+        current->thread.arch.faultinfo = fi;
 	force_sig_info(SIGSEGV, &si, current);
 }
 
@@ -204,6 +210,7 @@ void relay_signal(int sig, union uml_pt_regs *regs)
 	if(arch_handle_signal(sig, regs)) return;
 	if(!UPT_IS_USER(regs))
 		panic("Kernel mode signal %d", sig);
+        current->thread.arch.faultinfo = *UPT_FAULTINFO(regs);
 	force_sig(sig, current);
 }
 
diff --git a/arch/um/kernel/trap_user.c b/arch/um/kernel/trap_user.c
index 50a4042a509..f825a6eda3f 100644
--- a/arch/um/kernel/trap_user.c
+++ b/arch/um/kernel/trap_user.c
@@ -54,23 +54,22 @@ struct {
 void segv_handler(int sig, union uml_pt_regs *regs)
 {
 	int index, max;
+        struct faultinfo * fi = UPT_FAULTINFO(regs);
 
-	if(UPT_IS_USER(regs) && !UPT_SEGV_IS_FIXABLE(regs)){
-		bad_segv(UPT_FAULT_ADDR(regs), UPT_IP(regs), 
-			 UPT_FAULT_WRITE(regs));
+        if(UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)){
+                bad_segv(*fi, UPT_IP(regs));
 		return;
 	}
 	max = sizeof(segfault_record)/sizeof(segfault_record[0]);
 	index = next_trap_index(max);
 
 	nsegfaults++;
-	segfault_record[index].address = UPT_FAULT_ADDR(regs);
+        segfault_record[index].address = FAULT_ADDRESS(*fi);
 	segfault_record[index].pid = os_getpid();
-	segfault_record[index].is_write = UPT_FAULT_WRITE(regs);
+        segfault_record[index].is_write = FAULT_WRITE(*fi);
 	segfault_record[index].sp = UPT_SP(regs);
 	segfault_record[index].is_user = UPT_IS_USER(regs);
-	segv(UPT_FAULT_ADDR(regs), UPT_IP(regs), UPT_FAULT_WRITE(regs),
-	     UPT_IS_USER(regs), regs);
+        segv(*fi, UPT_IP(regs), UPT_IS_USER(regs), regs);
 }
 
 void usr2_handler(int sig, union uml_pt_regs *regs)
diff --git a/arch/um/kernel/tt/Makefile b/arch/um/kernel/tt/Makefile
index 3d5177df350..c3faea21a99 100644
--- a/arch/um/kernel/tt/Makefile
+++ b/arch/um/kernel/tt/Makefile
@@ -4,6 +4,7 @@
 #
 
 extra-y := unmap_fin.o
+targets := unmap.o
 clean-files := unmap_tmp.o
 
 obj-y = exec_kern.o exec_user.o gdb.o ksyms.o mem.o mem_user.o process_kern.o \
diff --git a/arch/um/kernel/tt/include/mode_kern-tt.h b/arch/um/kernel/tt/include/mode_kern-tt.h
index 28aaab3448f..e0ca0e0b251 100644
--- a/arch/um/kernel/tt/include/mode_kern-tt.h
+++ b/arch/um/kernel/tt/include/mode_kern-tt.h
@@ -19,7 +19,6 @@ extern int copy_thread_tt(int nr, unsigned long clone_flags, unsigned long sp,
 			  unsigned long stack_top, struct task_struct *p,
 			  struct pt_regs *regs);
 extern void release_thread_tt(struct task_struct *task);
-extern void exit_thread_tt(void);
 extern void initial_thread_cb_tt(void (*proc)(void *), void *arg);
 extern void init_idle_tt(void);
 extern void flush_tlb_kernel_range_tt(unsigned long start, unsigned long end);
diff --git a/arch/um/kernel/tt/include/uaccess-tt.h b/arch/um/kernel/tt/include/uaccess-tt.h
index f0bad010ceb..3fbb5fe26f4 100644
--- a/arch/um/kernel/tt/include/uaccess-tt.h
+++ b/arch/um/kernel/tt/include/uaccess-tt.h
@@ -34,7 +34,7 @@ extern unsigned long uml_physmem;
           (under_task_size(addr, size) || is_stack(addr, size))))
 
 static inline int verify_area_tt(int type, const void * addr,
-				 unsigned long size)
+                                 unsigned long size)
 {
 	return(access_ok_tt(type, addr, size) ? 0 : -EFAULT);
 }
diff --git a/arch/um/kernel/tt/mem.c b/arch/um/kernel/tt/mem.c
index 74346a04a2b..bcb8796c3cb 100644
--- a/arch/um/kernel/tt/mem.c
+++ b/arch/um/kernel/tt/mem.c
@@ -21,14 +21,8 @@ void before_mem_tt(unsigned long brk_start)
 	remap_data(UML_ROUND_DOWN(&__bss_start), UML_ROUND_UP(&_end), 1);
 }
 
-#ifdef CONFIG_HOST_2G_2G
-#define TOP 0x80000000
-#else
-#define TOP 0xc0000000
-#endif
-
 #define SIZE ((CONFIG_NEST_LEVEL + CONFIG_KERNEL_HALF_GIGS) * 0x20000000)
-#define START (TOP - SIZE)
+#define START (CONFIG_TOP_ADDR - SIZE)
 
 unsigned long set_task_sizes_tt(int arg, unsigned long *host_size_out, 
 				unsigned long *task_size_out)
diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c
index f19f7c18feb..df810ca8fc1 100644
--- a/arch/um/kernel/tt/process_kern.c
+++ b/arch/um/kernel/tt/process_kern.c
@@ -65,8 +65,7 @@ void *switch_to_tt(void *prev, void *next, void *last)
 		panic("write of switch_pipe failed, err = %d", -err);
 
 	reading = 1;
-	if((from->exit_state == EXIT_ZOMBIE) ||
-	   (from->exit_state == EXIT_DEAD))
+        if(from->thread.mode.tt.switch_pipe[0] == -1)
 		os_kill_process(os_getpid(), 0);
 
 	err = os_read_file(from->thread.mode.tt.switch_pipe[0], &c, sizeof(c));
@@ -81,8 +80,7 @@ void *switch_to_tt(void *prev, void *next, void *last)
 	 * in case it has not already killed itself.
 	 */
 	prev_sched = current->thread.prev_sched;
-	if((prev_sched->exit_state == EXIT_ZOMBIE) ||
-	   (prev_sched->exit_state == EXIT_DEAD))
+        if(prev_sched->thread.mode.tt.switch_pipe[0] == -1)
 		os_kill_process(prev_sched->thread.mode.tt.extern_pid, 1);
 
 	change_sig(SIGVTALRM, vtalrm);
@@ -101,14 +99,18 @@ void release_thread_tt(struct task_struct *task)
 {
 	int pid = task->thread.mode.tt.extern_pid;
 
+	/*
+         * We first have to kill the other process, before
+         * closing its switch_pipe. Else it might wake up
+         * and receive "EOF" before we could kill it.
+         */
 	if(os_getpid() != pid)
 		os_kill_process(pid, 0);
-}
 
-void exit_thread_tt(void)
-{
-	os_close_file(current->thread.mode.tt.switch_pipe[0]);
-	os_close_file(current->thread.mode.tt.switch_pipe[1]);
+        os_close_file(task->thread.mode.tt.switch_pipe[0]);
+        os_close_file(task->thread.mode.tt.switch_pipe[1]);
+	/* use switch_pipe as flag: thread is released */
+        task->thread.mode.tt.switch_pipe[0] = -1;
 }
 
 void suspend_new_thread(int fd)
diff --git a/arch/um/kernel/tt/syscall_user.c b/arch/um/kernel/tt/syscall_user.c
index e4e7e9c2224..b218316cfdb 100644
--- a/arch/um/kernel/tt/syscall_user.c
+++ b/arch/um/kernel/tt/syscall_user.c
@@ -63,6 +63,10 @@ void do_syscall(void *task, int pid, int local_using_sysemu)
 
 	UPT_SYSCALL_NR(TASK_REGS(task)) = PT_SYSCALL_NR(proc_regs);
 
+#ifdef UPT_ORIGGPR2
+        UPT_ORIGGPR2(TASK_REGS(task)) = REGS_ORIGGPR2(proc_regs);
+#endif
+
 	if(((unsigned long *) PT_IP(proc_regs) >= &_stext) &&
 	   ((unsigned long *) PT_IP(proc_regs) <= &_etext))
 		tracer_panic("I'm tracing myself and I can't get out");
diff --git a/arch/um/kernel/tt/tracer.c b/arch/um/kernel/tt/tracer.c
index 7b5d937e595..d11e7399d7a 100644
--- a/arch/um/kernel/tt/tracer.c
+++ b/arch/um/kernel/tt/tracer.c
@@ -26,6 +26,7 @@
 #include "kern_util.h"
 #include "chan_user.h"
 #include "ptrace_user.h"
+#include "irq_user.h"
 #include "mode.h"
 #include "tt.h"
 
@@ -33,7 +34,7 @@ static int tracer_winch[2];
 
 int is_tracer_winch(int pid, int fd, void *data)
 {
-	if(pid != tracing_pid)
+	if(pid != os_getpgrp())
 		return(0);
 
 	register_winch_irq(tracer_winch[0], fd, -1, data);
@@ -89,8 +90,10 @@ void tracer_panic(char *format, ...)
 
 static void tracer_segv(int sig, struct sigcontext sc)
 {
+        struct faultinfo fi;
+        GET_FAULTINFO_FROM_SC(fi, &sc);
 	printf("Tracing thread segfault at address 0x%lx, ip 0x%lx\n",
-	       SC_FAULT_ADDR(&sc), SC_IP(&sc));
+               FAULT_ADDRESS(fi), SC_IP(&sc));
 	while(1)
 		pause();
 }
@@ -117,6 +120,7 @@ static int signal_tramp(void *arg)
 	signal(SIGSEGV, (__sighandler_t) sig_handler);
 	set_cmdline("(idle thread)");
 	set_init_pid(os_getpid());
+	init_irq_signals(0);
 	proc = arg;
 	return((*proc)(NULL));
 }
diff --git a/arch/um/kernel/tt/trap_user.c b/arch/um/kernel/tt/trap_user.c
index 92a3820ca54..fc108615bea 100644
--- a/arch/um/kernel/tt/trap_user.c
+++ b/arch/um/kernel/tt/trap_user.c
@@ -7,6 +7,7 @@
 #include <errno.h>
 #include <signal.h>
 #include "sysdep/ptrace.h"
+#include "sysdep/sigcontext.h"
 #include "signal_user.h"
 #include "user_util.h"
 #include "kern_util.h"
@@ -28,6 +29,11 @@ void sig_handler_common_tt(int sig, void *sc_ptr)
 		change_sig(SIGSEGV, 1);
 
 	r = &TASK_REGS(get_current())->tt;
+        if ( sig == SIGFPE || sig == SIGSEGV ||
+             sig == SIGBUS || sig == SIGILL ||
+             sig == SIGTRAP ) {
+                GET_FAULTINFO_FROM_SC(r->faultinfo, sc);
+        }
 	save_regs = *r;
 	is_user = user_context(SC_SP(sc));
 	r->sc = sc;
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 5c49d88eed3..4d10ec372a6 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -23,6 +23,7 @@
 #include "asm/ptrace.h"
 #include "asm/elf.h"
 #include "asm/user.h"
+#include "asm/setup.h"
 #include "ubd_user.h"
 #include "asm/current.h"
 #include "asm/setup.h"
@@ -42,9 +43,9 @@
 #define DEFAULT_COMMAND_LINE "root=98:0"
 
 /* Changed in linux_main and setup_arch, which run before SMP is started */
-char command_line[COMMAND_LINE_SIZE] = { 0 };
+static char command_line[COMMAND_LINE_SIZE] = { 0 };
 
-void add_arg(char *arg)
+static void add_arg(char *arg)
 {
 	if (strlen(command_line) + strlen(arg) + 1 > COMMAND_LINE_SIZE) {
 		printf("add_arg: Too many command line arguments!\n");
@@ -449,7 +450,7 @@ void __init setup_arch(char **cmdline_p)
 {
 	notifier_chain_register(&panic_notifier_list, &panic_exit_notifier);
 	paging_init();
- 	strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
+        strlcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
  	*cmdline_p = command_line;
 	setup_hostinfo();
 }
diff --git a/arch/um/kernel/vmlinux.lds.S b/arch/um/kernel/vmlinux.lds.S
new file mode 100644
index 00000000000..1660a769674
--- /dev/null
+++ b/arch/um/kernel/vmlinux.lds.S
@@ -0,0 +1,6 @@
+#include <linux/config.h>
+#ifdef CONFIG_LD_SCRIPT_STATIC
+#include "uml.lds.S"
+#else
+#include "dyn.lds.S"
+#endif