diff --git a/Makefile b/Makefile
index dc82462..4a47203 100644
--- a/Makefile
+++ b/Makefile
@@ -496,11 +496,6 @@
 CFLAGS		+= -fomit-frame-pointer
 endif
 
-ifdef CONFIG_UNWIND_INFO
-CFLAGS		+= -fasynchronous-unwind-tables
-LDFLAGS_vmlinux	+= --eh-frame-hdr
-endif
-
 ifdef CONFIG_DEBUG_INFO
 CFLAGS		+= -g
 endif
diff --git a/arch/i386/defconfig b/arch/i386/defconfig
index 3265208..e075ff0 100644
--- a/arch/i386/defconfig
+++ b/arch/i386/defconfig
@@ -1493,8 +1493,6 @@
 # CONFIG_DEBUG_VM is not set
 # CONFIG_DEBUG_LIST is not set
 # CONFIG_FRAME_POINTER is not set
-CONFIG_UNWIND_INFO=y
-CONFIG_STACK_UNWIND=y
 # CONFIG_FORCED_INLINING is not set
 # CONFIG_HEADERS_CHECK is not set
 # CONFIG_RCU_TORTURE_TEST is not set
diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S
index de34b7fe..06461b8 100644
--- a/arch/i386/kernel/entry.S
+++ b/arch/i386/kernel/entry.S
@@ -979,38 +979,6 @@
 	jmp error_code
 	CFI_ENDPROC
 
-#ifdef CONFIG_STACK_UNWIND
-ENTRY(arch_unwind_init_running)
-	CFI_STARTPROC
-	movl	4(%esp), %edx
-	movl	(%esp), %ecx
-	leal	4(%esp), %eax
-	movl	%ebx, PT_EBX(%edx)
-	xorl	%ebx, %ebx
-	movl	%ebx, PT_ECX(%edx)
-	movl	%ebx, PT_EDX(%edx)
-	movl	%esi, PT_ESI(%edx)
-	movl	%edi, PT_EDI(%edx)
-	movl	%ebp, PT_EBP(%edx)
-	movl	%ebx, PT_EAX(%edx)
-	movl	$__USER_DS, PT_DS(%edx)
-	movl	$__USER_DS, PT_ES(%edx)
-	movl	$0, PT_GS(%edx)
-	movl	%ebx, PT_ORIG_EAX(%edx)
-	movl	%ecx, PT_EIP(%edx)
-	movl	12(%esp), %ecx
-	movl	$__KERNEL_CS, PT_CS(%edx)
-	movl	%ebx, PT_EFLAGS(%edx)
-	movl	%eax, PT_OLDESP(%edx)
-	movl	8(%esp), %eax
-	movl	%ecx, 8(%esp)
-	movl	PT_EBX(%edx), %ebx
-	movl	$__KERNEL_DS, PT_OLDSS(%edx)
-	jmpl	*%eax
-	CFI_ENDPROC
-ENDPROC(arch_unwind_init_running)
-#endif
-
 ENTRY(kernel_thread_helper)
 	pushl $0		# fake return address for unwinder
 	CFI_STARTPROC
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index 2b30dbf..0efad8a 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -94,11 +94,6 @@
 asmlinkage void machine_check(void);
 
 int kstack_depth_to_print = 24;
-#ifdef CONFIG_STACK_UNWIND
-static int call_trace = 1;
-#else
-#define call_trace (-1)
-#endif
 ATOMIC_NOTIFIER_HEAD(i386die_chain);
 
 int register_die_notifier(struct notifier_block *nb)
@@ -152,33 +147,6 @@
 	return ebp;
 }
 
-struct ops_and_data {
-	struct stacktrace_ops *ops;
-	void *data;
-};
-
-static asmlinkage int
-dump_trace_unwind(struct unwind_frame_info *info, void *data)
-{
-	struct ops_and_data *oad = (struct ops_and_data *)data;
-	int n = 0;
-	unsigned long sp = UNW_SP(info);
-
-	if (arch_unw_user_mode(info))
-		return -1;
-	while (unwind(info) == 0 && UNW_PC(info)) {
-		n++;
-		oad->ops->address(oad->data, UNW_PC(info));
-		if (arch_unw_user_mode(info))
-			break;
-		if ((sp & ~(PAGE_SIZE - 1)) == (UNW_SP(info) & ~(PAGE_SIZE - 1))
-		    && sp > UNW_SP(info))
-			break;
-		sp = UNW_SP(info);
-	}
-	return n;
-}
-
 #define MSG(msg) ops->warning(data, msg)
 
 void dump_trace(struct task_struct *task, struct pt_regs *regs,
@@ -190,41 +158,6 @@
 	if (!task)
 		task = current;
 
-	if (call_trace >= 0) {
-		int unw_ret = 0;
-		struct unwind_frame_info info;
-		struct ops_and_data oad = { .ops = ops, .data = data };
-
-		if (regs) {
-			if (unwind_init_frame_info(&info, task, regs) == 0)
-				unw_ret = dump_trace_unwind(&info, &oad);
-		} else if (task == current)
-			unw_ret = unwind_init_running(&info, dump_trace_unwind,
-						      &oad);
-		else {
-			if (unwind_init_blocked(&info, task) == 0)
-				unw_ret = dump_trace_unwind(&info, &oad);
-		}
-		if (unw_ret > 0) {
-			if (call_trace == 1 && !arch_unw_user_mode(&info)) {
-				ops->warning_symbol(data,
-					     "DWARF2 unwinder stuck at %s",
-					     UNW_PC(&info));
-				if (UNW_SP(&info) >= PAGE_OFFSET) {
-					MSG("Leftover inexact backtrace:");
-					stack = (void *)UNW_SP(&info);
-					if (!stack)
-						return;
-					ebp = UNW_FP(&info);
-				} else
-					MSG("Full inexact backtrace again:");
-			} else if (call_trace >= 1)
-				return;
-			else
-				MSG("Full inexact backtrace again:");
-		} else
-			MSG("Inexact backtrace:");
-	}
 	if (!stack) {
 		unsigned long dummy;
 		stack = &dummy;
@@ -1258,19 +1191,3 @@
 	return 1;
 }
 __setup("kstack=", kstack_setup);
-
-#ifdef CONFIG_STACK_UNWIND
-static int __init call_trace_setup(char *s)
-{
-	if (strcmp(s, "old") == 0)
-		call_trace = -1;
-	else if (strcmp(s, "both") == 0)
-		call_trace = 0;
-	else if (strcmp(s, "newfallback") == 0)
-		call_trace = 1;
-	else if (strcmp(s, "new") == 2)
-		call_trace = 2;
-	return 1;
-}
-__setup("call_trace=", call_trace_setup);
-#endif
diff --git a/arch/s390/defconfig b/arch/s390/defconfig
index a6ec919..5368cf4 100644
--- a/arch/s390/defconfig
+++ b/arch/s390/defconfig
@@ -1,14 +1,15 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.19-rc2
-# Wed Oct 18 17:11:10 2006
+# Linux kernel version: 2.6.20-rc1
+# Fri Dec 15 16:52:28 2006
 #
 CONFIG_MMU=y
 CONFIG_LOCKDEP_SUPPORT=y
 CONFIG_STACKTRACE_SUPPORT=y
 CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+# CONFIG_ARCH_HAS_ILOG2_U32 is not set
+# CONFIG_ARCH_HAS_ILOG2_U64 is not set
 CONFIG_GENERIC_HWEIGHT=y
-CONFIG_GENERIC_CALIBRATE_DELAY=y
 CONFIG_GENERIC_TIME=y
 CONFIG_S390=y
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
@@ -37,12 +38,13 @@
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 # CONFIG_CPUSETS is not set
+CONFIG_SYSFS_DEPRECATED=y
 # CONFIG_RELAY is not set
 CONFIG_INITRAMFS_SOURCE=""
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
 CONFIG_SYSCTL=y
 # CONFIG_EMBEDDED is not set
-# CONFIG_SYSCTL_SYSCALL is not set
+CONFIG_SYSCTL_SYSCALL=y
 CONFIG_KALLSYMS=y
 # CONFIG_KALLSYMS_ALL is not set
 # CONFIG_KALLSYMS_EXTRA_PASS is not set
@@ -119,6 +121,7 @@
 CONFIG_CHECK_STACK=y
 CONFIG_STACK_GUARD=256
 # CONFIG_WARN_STACK is not set
+CONFIG_ARCH_POPULATES_NODE_MAP=y
 CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_FLATMEM_MANUAL=y
 # CONFIG_DISCONTIGMEM_MANUAL is not set
@@ -128,6 +131,7 @@
 # CONFIG_SPARSEMEM_STATIC is not set
 CONFIG_SPLIT_PTLOCK_CPUS=4
 CONFIG_RESOURCES_64BIT=y
+CONFIG_HOLES_IN_ZONE=y
 
 #
 # I/O subsystem configuration
@@ -196,6 +200,7 @@
 # CONFIG_TCP_CONG_ADVANCED is not set
 CONFIG_TCP_CONG_CUBIC=y
 CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
 CONFIG_IPV6=y
 # CONFIG_IPV6_PRIVACY is not set
 # CONFIG_IPV6_ROUTER_PREF is not set
@@ -211,7 +216,6 @@
 # CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
 CONFIG_IPV6_SIT=y
 # CONFIG_IPV6_TUNNEL is not set
-# CONFIG_IPV6_SUBTREES is not set
 # CONFIG_IPV6_MULTIPLE_TABLES is not set
 # CONFIG_NETWORK_SECMARK is not set
 # CONFIG_NETFILTER is not set
@@ -246,6 +250,7 @@
 # QoS and/or fair queueing
 #
 CONFIG_NET_SCHED=y
+CONFIG_NET_SCH_FIFO=y
 CONFIG_NET_SCH_CLK_JIFFIES=y
 # CONFIG_NET_SCH_CLK_GETTIMEOFDAY is not set
 # CONFIG_NET_SCH_CLK_CPU is not set
@@ -277,6 +282,7 @@
 CONFIG_NET_CLS_FW=m
 CONFIG_NET_CLS_U32=m
 # CONFIG_CLS_U32_PERF is not set
+CONFIG_CLS_U32_MARK=y
 CONFIG_NET_CLS_RSVP=m
 CONFIG_NET_CLS_RSVP6=m
 # CONFIG_NET_EMATCH is not set
@@ -315,6 +321,7 @@
 #
 # CONFIG_RAID_ATTRS is not set
 CONFIG_SCSI=y
+# CONFIG_SCSI_TGT is not set
 CONFIG_SCSI_NETLINK=y
 CONFIG_SCSI_PROC_FS=y
 
@@ -335,6 +342,7 @@
 CONFIG_SCSI_MULTI_LUN=y
 CONFIG_SCSI_CONSTANTS=y
 CONFIG_SCSI_LOGGING=y
+CONFIG_SCSI_SCAN_ASYNC=y
 
 #
 # SCSI Transports
@@ -546,6 +554,7 @@
 # CONFIG_AUTOFS_FS is not set
 # CONFIG_AUTOFS4_FS is not set
 # CONFIG_FUSE_FS is not set
+CONFIG_GENERIC_ACL=y
 
 #
 # CD-ROM/DVD Filesystems
@@ -571,7 +580,7 @@
 CONFIG_TMPFS_POSIX_ACL=y
 # CONFIG_HUGETLB_PAGE is not set
 CONFIG_RAMFS=y
-# CONFIG_CONFIGFS_FS is not set
+CONFIG_CONFIGFS_FS=m
 
 #
 # Miscellaneous filesystems
@@ -616,7 +625,6 @@
 # CONFIG_CODA_FS is not set
 # CONFIG_AFS_FS is not set
 # CONFIG_9P_FS is not set
-CONFIG_GENERIC_ACL=y
 
 #
 # Partition Types
@@ -646,6 +654,14 @@
 # CONFIG_NLS is not set
 
 #
+# Distributed Lock Manager
+#
+CONFIG_DLM=m
+CONFIG_DLM_TCP=y
+# CONFIG_DLM_SCTP is not set
+# CONFIG_DLM_DEBUG is not set
+
+#
 # Instrumentation Support
 #
 
@@ -663,6 +679,8 @@
 CONFIG_ENABLE_MUST_CHECK=y
 CONFIG_MAGIC_SYSRQ=y
 # CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_FS=y
+CONFIG_HEADERS_CHECK=y
 CONFIG_DEBUG_KERNEL=y
 CONFIG_LOG_BUF_SHIFT=17
 # CONFIG_SCHEDSTATS is not set
@@ -679,13 +697,11 @@
 # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
 # CONFIG_DEBUG_KOBJECT is not set
 # CONFIG_DEBUG_INFO is not set
-CONFIG_DEBUG_FS=y
 # CONFIG_DEBUG_VM is not set
 # CONFIG_DEBUG_LIST is not set
 # CONFIG_FRAME_POINTER is not set
 # CONFIG_UNWIND_INFO is not set
 CONFIG_FORCED_INLINING=y
-CONFIG_HEADERS_CHECK=y
 # CONFIG_RCU_TORTURE_TEST is not set
 # CONFIG_LKDTM is not set
 
@@ -699,10 +715,11 @@
 # Cryptographic options
 #
 CONFIG_CRYPTO=y
-CONFIG_CRYPTO_ALGAPI=m
-CONFIG_CRYPTO_BLKCIPHER=m
-CONFIG_CRYPTO_MANAGER=m
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_MANAGER=y
 # CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
 # CONFIG_CRYPTO_NULL is not set
 # CONFIG_CRYPTO_MD4 is not set
 # CONFIG_CRYPTO_MD5 is not set
@@ -713,8 +730,10 @@
 # CONFIG_CRYPTO_SHA512 is not set
 # CONFIG_CRYPTO_WP512 is not set
 # CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_GF128MUL is not set
 CONFIG_CRYPTO_ECB=m
-CONFIG_CRYPTO_CBC=m
+CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_LRW is not set
 # CONFIG_CRYPTO_DES is not set
 # CONFIG_CRYPTO_DES_S390 is not set
 # CONFIG_CRYPTO_BLOWFISH is not set
@@ -740,8 +759,10 @@
 #
 # Library routines
 #
+CONFIG_BITREVERSE=m
 # CONFIG_CRC_CCITT is not set
 # CONFIG_CRC16 is not set
 CONFIG_CRC32=m
 # CONFIG_LIBCRC32C is not set
 CONFIG_PLIST=y
+CONFIG_IOMAP_COPY=y
diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c
index 443fa37..2782cf9 100644
--- a/arch/s390/hypfs/hypfs_diag.c
+++ b/arch/s390/hypfs/hypfs_diag.c
@@ -379,7 +379,7 @@
 static void *diag204_alloc_rbuf(void)
 {
 	diag204_buf = (void*)__get_free_pages(GFP_KERNEL,0);
-	if (diag204_buf)
+	if (!diag204_buf)
 		return ERR_PTR(-ENOMEM);
 	diag204_buf_pages = 1;
 	return diag204_buf;
@@ -521,7 +521,7 @@
 	}
 	rc = diag224_get_name_table();
 	if (rc) {
-		diag224_delete_name_table();
+		diag204_free_buffer();
 		printk(KERN_ERR "hypfs: could not get name table.\n");
 	}
 	return rc;
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index a36bea1..9e9972e 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -609,42 +609,12 @@
 static struct subsys_attribute on_panic_attr =
 		__ATTR(on_panic, 0644, on_panic_show, on_panic_store);
 
-static void print_fcp_block(struct ipl_parameter_block *fcp_block)
-{
-	printk(KERN_EMERG "wwpn:      %016llx\n",
-		(unsigned long long)fcp_block->ipl_info.fcp.wwpn);
-	printk(KERN_EMERG "lun:       %016llx\n",
-		(unsigned long long)fcp_block->ipl_info.fcp.lun);
-	printk(KERN_EMERG "bootprog:  %lld\n",
-		(unsigned long long)fcp_block->ipl_info.fcp.bootprog);
-	printk(KERN_EMERG "br_lba:    %lld\n",
-		(unsigned long long)fcp_block->ipl_info.fcp.br_lba);
-	printk(KERN_EMERG "device:    %llx\n",
-		(unsigned long long)fcp_block->ipl_info.fcp.devno);
-	printk(KERN_EMERG "opt:       %x\n", fcp_block->ipl_info.fcp.opt);
-}
-
 void do_reipl(void)
 {
 	struct ccw_dev_id devid;
 	static char buf[100];
 	char loadparm[LOADPARM_LEN + 1];
 
-	switch (reipl_type) {
-	case IPL_TYPE_CCW:
-		reipl_get_ascii_loadparm(loadparm);
-		printk(KERN_EMERG "reboot on ccw device: 0.0.%04x\n",
-			reipl_block_ccw->ipl_info.ccw.devno);
-		printk(KERN_EMERG "loadparm = '%s'\n", loadparm);
-		break;
-	case IPL_TYPE_FCP:
-		printk(KERN_EMERG "reboot on fcp device:\n");
-		print_fcp_block(reipl_block_fcp);
-		break;
-	default:
-		break;
-	}
-
 	switch (reipl_method) {
 	case IPL_METHOD_CCW_CIO:
 		devid.devno = reipl_block_ccw->ipl_info.ccw.devno;
@@ -654,6 +624,7 @@
 		reipl_ccw_dev(&devid);
 		break;
 	case IPL_METHOD_CCW_VM:
+		reipl_get_ascii_loadparm(loadparm);
 		if (strlen(loadparm) == 0)
 			sprintf(buf, "IPL %X",
 				reipl_block_ccw->ipl_info.ccw.devno);
@@ -683,7 +654,6 @@
 		diag308(DIAG308_IPL, NULL);
 		break;
 	}
-	printk(KERN_EMERG "reboot failed!\n");
 	signal_processor(smp_processor_id(), sigp_stop_and_store_status);
 }
 
@@ -692,19 +662,6 @@
 	struct ccw_dev_id devid;
 	static char buf[100];
 
-	switch (dump_type) {
-	case IPL_TYPE_CCW:
-		printk(KERN_EMERG "Automatic dump on ccw device: 0.0.%04x\n",
-		       dump_block_ccw->ipl_info.ccw.devno);
-		break;
-	case IPL_TYPE_FCP:
-		printk(KERN_EMERG "Automatic dump on fcp device:\n");
-		print_fcp_block(dump_block_fcp);
-		break;
-	default:
-		return;
-	}
-
 	switch (dump_method) {
 	case IPL_METHOD_CCW_CIO:
 		smp_send_stop();
@@ -1037,15 +994,21 @@
 }
 
 extern void reset_mcck_handler(void);
+extern void reset_pgm_handler(void);
+extern __u32 dump_prefix_page;
 
 void s390_reset_system(void)
 {
 	struct _lowcore *lc;
 
-	/* Stack for interrupt/machine check handler */
 	lc = (struct _lowcore *)(unsigned long) store_prefix();
+
+	/* Stack for interrupt/machine check handler */
 	lc->panic_stack = S390_lowcore.panic_stack;
 
+	/* Save prefix page address for dump case */
+	dump_prefix_page = (unsigned long) lc;
+
 	/* Disable prefixing */
 	set_prefix(0);
 
@@ -1056,5 +1019,11 @@
 	S390_lowcore.mcck_new_psw.mask = PSW_KERNEL_BITS & ~PSW_MASK_MCHECK;
 	S390_lowcore.mcck_new_psw.addr =
 		PSW_ADDR_AMODE | (unsigned long) &reset_mcck_handler;
+
+	/* Set new program check handler */
+	S390_lowcore.program_new_psw.mask = PSW_KERNEL_BITS & ~PSW_MASK_MCHECK;
+	S390_lowcore.program_new_psw.addr =
+		PSW_ADDR_AMODE | (unsigned long) &reset_pgm_handler;
+
 	do_reset_calls();
 }
diff --git a/arch/s390/kernel/reipl.S b/arch/s390/kernel/reipl.S
index f9434d4..c3f4d9b 100644
--- a/arch/s390/kernel/reipl.S
+++ b/arch/s390/kernel/reipl.S
@@ -16,7 +16,7 @@
 		stm	%r0,%r15,__LC_GPREGS_SAVE_AREA
 		stctl	%c0,%c15,__LC_CREGS_SAVE_AREA
 		stam	%a0,%a15,__LC_AREGS_SAVE_AREA
-		stpx	__LC_PREFIX_SAVE_AREA
+		mvc	__LC_PREFIX_SAVE_AREA(4),dump_prefix_page-.Lpg0(%r13)
 		stckc	.Lclkcmp-.Lpg0(%r13)
 		mvc	__LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13)
 		stpt	__LC_CPU_TIMER_SAVE_AREA
@@ -79,3 +79,7 @@
 		.long	0x00000000,0x00000000
 		.long	0x00000000,0x00000000
 		.long	0x00000000,0x00000000
+	.globl dump_prefix_page
+dump_prefix_page:
+	.long 0x00000000
+
diff --git a/arch/s390/kernel/reipl64.S b/arch/s390/kernel/reipl64.S
index f18ef26..dbb3eed 100644
--- a/arch/s390/kernel/reipl64.S
+++ b/arch/s390/kernel/reipl64.S
@@ -20,7 +20,7 @@
 		stg	%r0,__LC_GPREGS_SAVE_AREA-0x1000+8(%r1)
 		stctg	%c0,%c15,__LC_CREGS_SAVE_AREA-0x1000(%r1)
 		stam	%a0,%a15,__LC_AREGS_SAVE_AREA-0x1000(%r1)
-		stpx	__LC_PREFIX_SAVE_AREA-0x1000(%r1)
+		mvc	__LC_PREFIX_SAVE_AREA-0x1000(4,%r1),dump_prefix_page-.Lpg0(%r13)
 		stfpc	__LC_FP_CREG_SAVE_AREA-0x1000(%r1)
 		stckc	.Lclkcmp-.Lpg0(%r13)
 		mvc	__LC_CLOCK_COMP_SAVE_AREA-0x1000(8,%r1),.Lclkcmp-.Lpg0(%r13)
@@ -103,3 +103,6 @@
 		.long	0x00000000,0x00000000
 		.long	0x00000000,0x00000000
 		.long	0x00000000,0x00000000
+	.globl dump_prefix_page
+dump_prefix_page:
+	.long 0x00000000
diff --git a/arch/s390/kernel/reset.S b/arch/s390/kernel/reset.S
index be8688c..8a87355 100644
--- a/arch/s390/kernel/reset.S
+++ b/arch/s390/kernel/reset.S
@@ -3,6 +3,7 @@
  *
  *    Copyright (C) IBM Corp. 2006
  *    Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
+ *		 Michael Holzheu <holzheu@de.ibm.com>
  */
 
 #include <asm/ptrace.h>
@@ -27,6 +28,26 @@
 s390_reset_mcck_handler:
 	.quad	0
 
+	.globl	reset_pgm_handler
+reset_pgm_handler:
+	stmg	%r0,%r15,__LC_SAVE_AREA
+	basr	%r13,0
+0:	lg	%r15,__LC_PANIC_STACK	# load panic stack
+	aghi	%r15,-STACK_FRAME_OVERHEAD
+	lg	%r1,s390_reset_pgm_handler-0b(%r13)
+	ltgr	%r1,%r1
+	jz	1f
+	basr	%r14,%r1
+	lmg	%r0,%r15,__LC_SAVE_AREA
+	lpswe	__LC_PGM_OLD_PSW
+1:	lpswe	disabled_wait_psw-0b(%r13)
+	.globl s390_reset_pgm_handler
+s390_reset_pgm_handler:
+	.quad	0
+	.align	8
+disabled_wait_psw:
+	.quad	0x0002000180000000,0x0000000000000000 + reset_pgm_handler
+
 #else /* CONFIG_64BIT */
 
 	.globl	reset_mcck_handler
@@ -45,4 +66,25 @@
 s390_reset_mcck_handler:
 	.long	0
 
+	.globl	reset_pgm_handler
+reset_pgm_handler:
+	stm	%r0,%r15,__LC_SAVE_AREA
+	basr	%r13,0
+0:	l	%r15,__LC_PANIC_STACK	# load panic stack
+	ahi	%r15,-STACK_FRAME_OVERHEAD
+	l	%r1,s390_reset_pgm_handler-0b(%r13)
+	ltr	%r1,%r1
+	jz	1f
+	basr	%r14,%r1
+	lm	%r0,%r15,__LC_SAVE_AREA
+	lpsw	__LC_PGM_OLD_PSW
+
+1:	lpsw	disabled_wait_psw-0b(%r13)
+	.globl	s390_reset_pgm_handler
+s390_reset_pgm_handler:
+	.long	0
+disabled_wait_psw:
+	.align 8
+	.long	0x000a0000,0x00000000 + reset_pgm_handler
+
 #endif /* CONFIG_64BIT */
diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile
index b471b855..2941a91 100644
--- a/arch/x86_64/Makefile
+++ b/arch/x86_64/Makefile
@@ -45,9 +45,7 @@
 # actually it makes the kernel smaller too.
 cflags-y += -fno-reorder-blocks
 cflags-y += -Wno-sign-compare
-ifneq ($(CONFIG_UNWIND_INFO),y)
 cflags-y += -fno-asynchronous-unwind-tables
-endif
 ifneq ($(CONFIG_DEBUG_INFO),y)
 # -fweb shrinks the kernel a bit, but the difference is very small
 # it also messes up debugging, so don't use it for now.
diff --git a/arch/x86_64/defconfig b/arch/x86_64/defconfig
index 1a1c6a1..ac80b12 100644
--- a/arch/x86_64/defconfig
+++ b/arch/x86_64/defconfig
@@ -1523,8 +1523,6 @@
 # CONFIG_DEBUG_VM is not set
 # CONFIG_DEBUG_LIST is not set
 # CONFIG_FRAME_POINTER is not set
-CONFIG_UNWIND_INFO=y
-CONFIG_STACK_UNWIND=y
 # CONFIG_FORCED_INLINING is not set
 # CONFIG_HEADERS_CHECK is not set
 # CONFIG_RCU_TORTURE_TEST is not set
diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index 601d332..9f5dac6 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -1155,36 +1155,3 @@
 	ret
 	CFI_ENDPROC
 ENDPROC(call_softirq)
-
-#ifdef CONFIG_STACK_UNWIND
-ENTRY(arch_unwind_init_running)
-	CFI_STARTPROC
-	movq	%r15, R15(%rdi)
-	movq	%r14, R14(%rdi)
-	xchgq	%rsi, %rdx
-	movq	%r13, R13(%rdi)
-	movq	%r12, R12(%rdi)
-	xorl	%eax, %eax
-	movq	%rbp, RBP(%rdi)
-	movq	%rbx, RBX(%rdi)
-	movq	(%rsp), %rcx
-	movq	%rax, R11(%rdi)
-	movq	%rax, R10(%rdi)
-	movq	%rax, R9(%rdi)
-	movq	%rax, R8(%rdi)
-	movq	%rax, RAX(%rdi)
-	movq	%rax, RCX(%rdi)
-	movq	%rax, RDX(%rdi)
-	movq	%rax, RSI(%rdi)
-	movq	%rax, RDI(%rdi)
-	movq	%rax, ORIG_RAX(%rdi)
-	movq	%rcx, RIP(%rdi)
-	leaq	8(%rsp), %rcx
-	movq	$__KERNEL_CS, CS(%rdi)
-	movq	%rax, EFLAGS(%rdi)
-	movq	%rcx, RSP(%rdi)
-	movq	$__KERNEL_DS, SS(%rdi)
-	jmpq	*%rdx
-	CFI_ENDPROC
-ENDPROC(arch_unwind_init_running)
-#endif
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index b54ccc0..1d9eb6d 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -110,11 +110,6 @@
 }
 
 int kstack_depth_to_print = 12;
-#ifdef CONFIG_STACK_UNWIND
-static int call_trace = 1;
-#else
-#define call_trace (-1)
-#endif
 
 #ifdef CONFIG_KALLSYMS
 void printk_address(unsigned long address)
@@ -217,32 +212,6 @@
 	return NULL;
 }
 
-struct ops_and_data {
-	struct stacktrace_ops *ops;
-	void *data;
-};
-
-static int dump_trace_unwind(struct unwind_frame_info *info, void *context)
-{
-	struct ops_and_data *oad = (struct ops_and_data *)context;
-	int n = 0;
-	unsigned long sp = UNW_SP(info);
-
-	if (arch_unw_user_mode(info))
-		return -1;
-	while (unwind(info) == 0 && UNW_PC(info)) {
-		n++;
-		oad->ops->address(oad->data, UNW_PC(info));
-		if (arch_unw_user_mode(info))
-			break;
-		if ((sp & ~(PAGE_SIZE - 1)) == (UNW_SP(info) & ~(PAGE_SIZE - 1))
-		    && sp > UNW_SP(info))
-			break;
-		sp = UNW_SP(info);
-	}
-	return n;
-}
-
 #define MSG(txt) ops->warning(data, txt)
 
 /*
@@ -270,40 +239,6 @@
 	if (!tsk)
 		tsk = current;
 
-	if (call_trace >= 0) {
-		int unw_ret = 0;
-		struct unwind_frame_info info;
-		struct ops_and_data oad = { .ops = ops, .data = data };
-
-		if (regs) {
-			if (unwind_init_frame_info(&info, tsk, regs) == 0)
-				unw_ret = dump_trace_unwind(&info, &oad);
-		} else if (tsk == current)
-			unw_ret = unwind_init_running(&info, dump_trace_unwind,
-						      &oad);
-		else {
-			if (unwind_init_blocked(&info, tsk) == 0)
-				unw_ret = dump_trace_unwind(&info, &oad);
-		}
-		if (unw_ret > 0) {
-			if (call_trace == 1 && !arch_unw_user_mode(&info)) {
-				ops->warning_symbol(data,
-					     "DWARF2 unwinder stuck at %s",
-					     UNW_PC(&info));
-				if ((long)UNW_SP(&info) < 0) {
-					MSG("Leftover inexact backtrace:");
-					stack = (unsigned long *)UNW_SP(&info);
-					if (!stack)
-						goto out;
-				} else
-					MSG("Full inexact backtrace again:");
-			} else if (call_trace >= 1)
-				goto out;
-			else
-				MSG("Full inexact backtrace again:");
-		} else
-			MSG("Inexact backtrace:");
-	}
 	if (!stack) {
 		unsigned long dummy;
 		stack = &dummy;
@@ -387,7 +322,6 @@
 	tinfo = current_thread_info();
 	HANDLE_STACK (valid_stack_ptr(tinfo, stack));
 #undef HANDLE_STACK
-out:
 	put_cpu();
 }
 EXPORT_SYMBOL(dump_trace);
@@ -1188,21 +1122,3 @@
 	return 0;
 }
 early_param("kstack", kstack_setup);
-
-#ifdef CONFIG_STACK_UNWIND
-static int __init call_trace_setup(char *s)
-{
-	if (!s)
-		return -EINVAL;
-	if (strcmp(s, "old") == 0)
-		call_trace = -1;
-	else if (strcmp(s, "both") == 0)
-		call_trace = 0;
-	else if (strcmp(s, "newfallback") == 0)
-		call_trace = 1;
-	else if (strcmp(s, "new") == 0)
-		call_trace = 2;
-	return 0;
-}
-early_param("call_trace", call_trace_setup);
-#endif
diff --git a/arch/x86_64/kernel/vmlinux.lds.S b/arch/x86_64/kernel/vmlinux.lds.S
index 514be5d..1e54ddf 100644
--- a/arch/x86_64/kernel/vmlinux.lds.S
+++ b/arch/x86_64/kernel/vmlinux.lds.S
@@ -221,9 +221,7 @@
   /* Sections to be discarded */
   /DISCARD/ : {
 	*(.exitcall.exit)
-#ifndef CONFIG_UNWIND_INFO
 	*(.eh_frame)
-#endif
 	}
 
   STABS_DEBUG
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 984ab28..b34e0a9 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -40,9 +40,9 @@
 	tristate "Intel PIIX/ICH SATA support"
 	depends on PCI
 	help
-	  This option enables support for ICH5/6/7/8 Serial ATA.
-	  If PATA support was enabled previously, this enables
-	  support for select Intel PIIX/ICH PATA host controllers.
+	  This option enables support for ICH5/6/7/8 Serial ATA
+	  and support for PATA on the Intel PIIX3/PIIX4/ICH series
+	  PATA host controllers.
 
 	  If unsure, say N.
 
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index f36da48..dbae6d9 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -645,8 +645,6 @@
 	u32 cap_save, impl_save, tmp;
 
 	cap_save = readl(mmio + HOST_CAP);
-	cap_save &= ( (1<<28) | (1<<17) );
-	cap_save |= (1 << 27);
 	impl_save = readl(mmio + HOST_PORTS_IMPL);
 
 	/* global controller reset */
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index c7de0bb..47701b2 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -226,14 +226,26 @@
 	{ 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
 	/* 2801GBM/GHM (ICH7M, identical to ICH6M) */
 	{ 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata_ahci },
-	/* Enterprise Southbridge 2 (where's the datasheet?) */
+	/* Enterprise Southbridge 2 (631xESB/632xESB) */
 	{ 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
-	/* SATA Controller 1 IDE (ICH8, no datasheet yet) */
+	/* SATA Controller 1 IDE (ICH8) */
 	{ 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
-	/* SATA Controller 2 IDE (ICH8, ditto) */
+	/* SATA Controller 2 IDE (ICH8) */
 	{ 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
-	/* Mobile SATA Controller IDE (ICH8M, ditto) */
+	/* Mobile SATA Controller IDE (ICH8M) */
 	{ 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+	/* SATA Controller IDE (ICH9) */
+	{ 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+	/* SATA Controller IDE (ICH9) */
+	{ 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+	/* SATA Controller IDE (ICH9) */
+	{ 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+	/* SATA Controller IDE (ICH9M) */
+	{ 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+	/* SATA Controller IDE (ICH9M) */
+	{ 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
+	/* SATA Controller IDE (ICH9M) */
+	{ 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
 
 	{ }	/* terminate list */
 };
@@ -330,7 +342,7 @@
 
 	.port_start		= ata_port_start,
 	.port_stop		= ata_port_stop,
-	.host_stop		= ata_host_stop,
+	.host_stop		= piix_host_stop,
 };
 
 static const struct ata_port_operations piix_sata_ops = {
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 011c0a8..0d51d13 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1332,7 +1332,7 @@
 }
 
 /**
- *	ata_exec_internal_sg - execute libata internal command
+ *	ata_exec_internal - execute libata internal command
  *	@dev: Device to which the command is sent
  *	@tf: Taskfile registers for the command and the result
  *	@cdb: CDB for packet command
@@ -1353,11 +1353,17 @@
 			   struct ata_taskfile *tf, const u8 *cdb,
 			   int dma_dir, void *buf, unsigned int buflen)
 {
-	struct scatterlist sg;
+	struct scatterlist *psg = NULL, sg;
+	unsigned int n_elem = 0;
 
-	sg_init_one(&sg, buf, buflen);
+	if (dma_dir != DMA_NONE) {
+		WARN_ON(!buf);
+		sg_init_one(&sg, buf, buflen);
+		psg = &sg;
+		n_elem++;
+	}
 
-	return ata_exec_internal_sg(dev, tf, cdb, dma_dir, &sg, 1);
+	return ata_exec_internal_sg(dev, tf, cdb, dma_dir, psg, n_elem);
 }
 
 /**
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 664e137..a4790be 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1539,7 +1539,7 @@
 		struct scatterlist *sg;
 
 		sg = (struct scatterlist *) cmd->request_buffer;
-		buf = kmap_atomic(sg->page, KM_USER0) + sg->offset;
+		buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
 		buflen = sg->length;
 	} else {
 		buf = cmd->request_buffer;
@@ -1567,7 +1567,7 @@
 		struct scatterlist *sg;
 
 		sg = (struct scatterlist *) cmd->request_buffer;
-		kunmap_atomic(buf - sg->offset, KM_USER0);
+		kunmap_atomic(buf - sg->offset, KM_IRQ0);
 	}
 }
 
diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c
index c7d1738..e7bf9d8 100644
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -698,8 +698,10 @@
 		goto fail_io;
 
 	pdev = platform_device_register_simple(DRV_NAME, nr_legacy_host, NULL, 0);
-	if (pdev == NULL)
+	if (IS_ERR(pdev)) {
+		ret = PTR_ERR(pdev);
 		goto fail_dev;
+	}
 
 	if (ht6560a & mask) {
 		ops = &ht6560a_port_ops;
diff --git a/drivers/ata/pata_qdi.c b/drivers/ata/pata_qdi.c
index 36f621a..afc0d99 100644
--- a/drivers/ata/pata_qdi.c
+++ b/drivers/ata/pata_qdi.c
@@ -247,8 +247,8 @@
 	 */
 
 	pdev = platform_device_register_simple(DRV_NAME, nr_qdi_host, NULL, 0);
-	if (pdev == NULL)
-		return -ENOMEM;
+	if (IS_ERR(pdev))
+		return PTR_ERR(pdev);
 
 	memset(&ae, 0, sizeof(struct ata_probe_ent));
 	INIT_LIST_HEAD(&ae.node);
diff --git a/drivers/ata/pata_rz1000.c b/drivers/ata/pata_rz1000.c
index 3677c64..adf4cc1 100644
--- a/drivers/ata/pata_rz1000.c
+++ b/drivers/ata/pata_rz1000.c
@@ -105,8 +105,6 @@
 	.exec_command	= ata_exec_command,
 	.dev_select 	= ata_std_dev_select,
 
-	.error_handler	= rz1000_error_handler,
-
 	.bmdma_setup 	= ata_bmdma_setup,
 	.bmdma_start 	= ata_bmdma_start,
 	.bmdma_stop	= ata_bmdma_stop,
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c
index cc09d47..ff93e8f 100644
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -161,10 +161,15 @@
 			return -ENOENT;
 	}
 
-	if ((config->flags & VIA_UDMA) >= VIA_UDMA_66)
+	if ((config->flags & VIA_UDMA) >= VIA_UDMA_100)
 		ap->cbl = via_cable_detect(ap);
-	else
+	/* The UDMA66 series has no cable detect so do drive side detect */
+	else if ((config->flags & VIA_UDMA) < VIA_UDMA_66)
 		ap->cbl = ATA_CBL_PATA40;
+	else
+		ap->cbl = ATA_CBL_PATA_UNK;
+		
+
 	return ata_std_prereset(ap);
 }
 
diff --git a/drivers/ata/pata_winbond.c b/drivers/ata/pata_winbond.c
index 3ea345c..5d1f518 100644
--- a/drivers/ata/pata_winbond.c
+++ b/drivers/ata/pata_winbond.c
@@ -206,8 +206,8 @@
 			 */
 
 			pdev = platform_device_register_simple(DRV_NAME, nr_winbond_host, NULL, 0);
-			if (pdev == NULL)
-				return -ENOMEM;
+			if (IS_ERR(pdev))
+				return PTR_ERR(pdev);
 
 			memset(&ae, 0, sizeof(struct ata_probe_ent));
 			INIT_LIST_HEAD(&ae.node);
diff --git a/drivers/ata/sata_svw.c b/drivers/ata/sata_svw.c
index db32d15..d89c959 100644
--- a/drivers/ata/sata_svw.c
+++ b/drivers/ata/sata_svw.c
@@ -56,6 +56,8 @@
 #define DRV_VERSION	"2.0"
 
 enum {
+	K2_FLAG_NO_ATAPI_DMA		= (1 << 29),
+
 	/* Taskfile registers offsets */
 	K2_SATA_TF_CMD_OFFSET		= 0x00,
 	K2_SATA_TF_DATA_OFFSET		= 0x00,
@@ -83,11 +85,33 @@
 
 	/* Port stride */
 	K2_SATA_PORT_OFFSET		= 0x100,
+
+	board_svw4			= 0,
+	board_svw8			= 1,
+};
+
+static const struct k2_board_info {
+	unsigned int		n_ports;
+	unsigned long		port_flags;
+} k2_board_info[] = {
+	/* board_svw4 */
+	{ 4, K2_FLAG_NO_ATAPI_DMA },
+
+	/* board_svw8 */
+	{ 8, K2_FLAG_NO_ATAPI_DMA },
 };
 
 static u8 k2_stat_check_status(struct ata_port *ap);
 
 
+static int k2_sata_check_atapi_dma(struct ata_queued_cmd *qc)
+{
+	if (qc->ap->flags & K2_FLAG_NO_ATAPI_DMA)
+		return -1;	/* ATAPI DMA not supported */
+
+	return 0;
+}
+
 static u32 k2_sata_scr_read (struct ata_port *ap, unsigned int sc_reg)
 {
 	if (sc_reg > SCR_CONTROL)
@@ -313,6 +337,7 @@
 	.check_status		= k2_stat_check_status,
 	.exec_command		= ata_exec_command,
 	.dev_select		= ata_std_dev_select,
+	.check_atapi_dma	= k2_sata_check_atapi_dma,
 	.bmdma_setup		= k2_bmdma_setup_mmio,
 	.bmdma_start		= k2_bmdma_start_mmio,
 	.bmdma_stop		= ata_bmdma_stop,
@@ -359,6 +384,8 @@
 	struct ata_probe_ent *probe_ent = NULL;
 	unsigned long base;
 	void __iomem *mmio_base;
+	const struct k2_board_info *board_info =
+			&k2_board_info[ent->driver_data];
 	int pci_dev_busy = 0;
 	int rc;
 	int i;
@@ -424,7 +451,7 @@
 
 	probe_ent->sht = &k2_sata_sht;
 	probe_ent->port_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
-				ATA_FLAG_MMIO;
+				ATA_FLAG_MMIO | board_info->port_flags;
 	probe_ent->port_ops = &k2_sata_ops;
 	probe_ent->n_ports = 4;
 	probe_ent->irq = pdev->irq;
@@ -441,7 +468,7 @@
 	/* different controllers have different number of ports - currently 4 or 8 */
 	/* All ports are on the same function. Multi-function device is no
 	 * longer available. This should not be seen in any system. */
-	for (i = 0; i < ent->driver_data; i++)
+	for (i = 0; i < board_info->n_ports; i++)
 		k2_sata_setup_port(&probe_ent->port[i], base + i * K2_SATA_PORT_OFFSET);
 
 	pci_set_master(pdev);
@@ -469,11 +496,11 @@
  * controller
  * */
 static const struct pci_device_id k2_sata_pci_tbl[] = {
-	{ PCI_VDEVICE(SERVERWORKS, 0x0240), 4 },
-	{ PCI_VDEVICE(SERVERWORKS, 0x0241), 4 },
-	{ PCI_VDEVICE(SERVERWORKS, 0x0242), 8 },
-	{ PCI_VDEVICE(SERVERWORKS, 0x024a), 4 },
-	{ PCI_VDEVICE(SERVERWORKS, 0x024b), 4 },
+	{ PCI_VDEVICE(SERVERWORKS, 0x0240), board_svw4 },
+	{ PCI_VDEVICE(SERVERWORKS, 0x0241), board_svw4 },
+	{ PCI_VDEVICE(SERVERWORKS, 0x0242), board_svw8 },
+	{ PCI_VDEVICE(SERVERWORKS, 0x024a), board_svw4 },
+	{ PCI_VDEVICE(SERVERWORKS, 0x024b), board_svw4 },
 
 	{ }
 };
diff --git a/drivers/s390/char/sclp_cpi.c b/drivers/s390/char/sclp_cpi.c
index f7c10d9..4f873ae 100644
--- a/drivers/s390/char/sclp_cpi.c
+++ b/drivers/s390/char/sclp_cpi.c
@@ -49,6 +49,8 @@
 	.send_mask = EvTyp_CtlProgIdent_Mask
 };
 
+MODULE_LICENSE("GPL");
+
 MODULE_AUTHOR(
 	"Martin Peschke, IBM Deutschland Entwicklung GmbH "
 	"<mpeschke@de.ibm.com>");
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 7835a71..3a403f1 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -871,11 +871,32 @@
 	return -EBUSY;
 }
 
+static int pgm_check_occured;
+
+static void cio_reset_pgm_check_handler(void)
+{
+	pgm_check_occured = 1;
+}
+
+static int stsch_reset(struct subchannel_id schid, volatile struct schib *addr)
+{
+	int rc;
+
+	pgm_check_occured = 0;
+	s390_reset_pgm_handler = cio_reset_pgm_check_handler;
+	rc = stsch(schid, addr);
+	s390_reset_pgm_handler = NULL;
+	if (pgm_check_occured)
+		return -EIO;
+	else
+		return rc;
+}
+
 static int __shutdown_subchannel_easy(struct subchannel_id schid, void *data)
 {
 	struct schib schib;
 
-	if (stsch_err(schid, &schib))
+	if (stsch_reset(schid, &schib))
 		return -ENXIO;
 	if (!schib.pmcw.ena)
 		return 0;
@@ -972,7 +993,7 @@
 	struct schib schib;
 	struct sch_match_id *match_id = data;
 
-	if (stsch_err(schid, &schib))
+	if (stsch_reset(schid, &schib))
 		return -ENXIO;
 	if (schib.pmcw.dnv &&
 	    (schib.pmcw.dev == match_id->devid.devno) &&
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 4c81d89..9d6c024 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -139,6 +139,8 @@
 	sch->dev.release = &css_subchannel_release;
 	sch->dev.groups = subch_attr_groups;
 
+	css_get_ssd_info(sch);
+
 	/* make it known to the system */
 	ret = css_sch_device_register(sch);
 	if (ret) {
@@ -146,7 +148,6 @@
 			__func__, sch->dev.bus_id);
 		return ret;
 	}
-	css_get_ssd_info(sch);
 	return ret;
 }
 
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index 9d4ea44..6fd1940 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -979,12 +979,11 @@
 
 	if (q->is_iqdio_q) {
 		/* 
-		 * for asynchronous queues, we better check, if the fill
-		 * level is too high. for synchronous queues, the fill
-		 * level will never be that high. 
+		 * for asynchronous queues, we better check, if the sent
+		 * buffer is already switched from PRIMED to EMPTY.
 		 */
-		if (atomic_read(&q->number_of_buffers_used)>
-		    IQDIO_FILL_LEVEL_TO_POLL)
+		if ((q->queue_type == QDIO_IQDIO_QFMT_ASYNCH) &&
+		    !qdio_is_outbound_q_done(q))
 			qdio_mark_q(q);
 
 	} else if (!q->hydra_gives_outbound_pcis)
@@ -1825,6 +1824,10 @@
 			q->sbal[j]=*(outbound_sbals_array++);
 
                 q->queue_type=q_format;
+		if ((q->queue_type == QDIO_IQDIO_QFMT) &&
+		    (no_output_qs > 1) &&
+		    (i == no_output_qs-1))
+			q->queue_type = QDIO_IQDIO_QFMT_ASYNCH;
 		q->int_parm=int_parm;
 		q->is_input_q=0;
 		q->schid = irq_ptr->schid;
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index ad60afe..81b5899 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -1129,7 +1129,15 @@
 	mutex_unlock(&ap_poll_thread_mutex);
 }
 
-static void ap_reset(void)
+static void ap_reset_domain(void)
+{
+	int i;
+
+	for (i = 0; i < AP_DEVICES; i++)
+		ap_reset_queue(AP_MKQID(i, ap_domain_index));
+}
+
+static void ap_reset_all(void)
 {
 	int i, j;
 
@@ -1139,7 +1147,7 @@
 }
 
 static struct reset_call ap_reset_call = {
-	.fn = ap_reset,
+	.fn = ap_reset_all,
 };
 
 /**
@@ -1229,10 +1237,12 @@
 	int i;
 	struct device *dev;
 
+	ap_reset_domain();
 	ap_poll_thread_stop();
 	del_timer_sync(&ap_config_timer);
 	del_timer_sync(&ap_poll_timer);
 	destroy_workqueue(ap_work_queue);
+	tasklet_kill(&ap_tasklet);
 	s390_root_dev_unregister(ap_root_device);
 	while ((dev = bus_find_device(&ap_bus_type, NULL, NULL,
 		    __ap_match_all)))
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 7437cca..1587121 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -119,8 +119,6 @@
 		*(__ksymtab_strings)					\
 	}								\
 									\
-	EH_FRAME							\
-									\
 	/* Built-in module parameters. */				\
 	__param : AT(ADDR(__param) - LOAD_OFFSET) {			\
 		VMLINUX_SYMBOL(__start___param) = .;			\
@@ -160,26 +158,6 @@
 		*(.kprobes.text)					\
 		VMLINUX_SYMBOL(__kprobes_text_end) = .;
 
-#ifdef CONFIG_STACK_UNWIND
-#define EH_FRAME							\
-		/* Unwind data binary search table */			\
-		. = ALIGN(8);						\
-        	.eh_frame_hdr : AT(ADDR(.eh_frame_hdr) - LOAD_OFFSET) {	\
-			VMLINUX_SYMBOL(__start_unwind_hdr) = .;		\
-			*(.eh_frame_hdr)				\
-			VMLINUX_SYMBOL(__end_unwind_hdr) = .;		\
-		}							\
-		/* Unwind data */					\
-		. = ALIGN(8);						\
-		.eh_frame : AT(ADDR(.eh_frame) - LOAD_OFFSET) {		\
-			VMLINUX_SYMBOL(__start_unwind) = .;		\
-		  	*(.eh_frame)					\
-			VMLINUX_SYMBOL(__end_unwind) = .;		\
-		}
-#else
-#define EH_FRAME
-#endif
-
 		/* DWARF debug sections.
 		Symbols in the DWARF debugging sections are relative to
 		the beginning of the section so we begin them at 0.  */
diff --git a/include/asm-i386/unwind.h b/include/asm-i386/unwind.h
index aa2c931..43c70c3 100644
--- a/include/asm-i386/unwind.h
+++ b/include/asm-i386/unwind.h
@@ -1,95 +1,6 @@
 #ifndef _ASM_I386_UNWIND_H
 #define _ASM_I386_UNWIND_H
 
-/*
- * Copyright (C) 2002-2006 Novell, Inc.
- *	Jan Beulich <jbeulich@novell.com>
- * This code is released under version 2 of the GNU GPL.
- */
-
-#ifdef CONFIG_STACK_UNWIND
-
-#include <linux/sched.h>
-#include <asm/fixmap.h>
-#include <asm/ptrace.h>
-#include <asm/uaccess.h>
-
-struct unwind_frame_info
-{
-	struct pt_regs regs;
-	struct task_struct *task;
-	unsigned call_frame:1;
-};
-
-#define UNW_PC(frame)        (frame)->regs.eip
-#define UNW_SP(frame)        (frame)->regs.esp
-#ifdef CONFIG_FRAME_POINTER
-#define UNW_FP(frame)        (frame)->regs.ebp
-#define FRAME_RETADDR_OFFSET 4
-#define FRAME_LINK_OFFSET    0
-#define STACK_BOTTOM(tsk)    STACK_LIMIT((tsk)->thread.esp0)
-#define STACK_TOP(tsk)       ((tsk)->thread.esp0)
-#else
-#define UNW_FP(frame) ((void)(frame), 0)
-#endif
-#define STACK_LIMIT(ptr)     (((ptr) - 1) & ~(THREAD_SIZE - 1))
-
-#define UNW_REGISTER_INFO \
-	PTREGS_INFO(eax), \
-	PTREGS_INFO(ecx), \
-	PTREGS_INFO(edx), \
-	PTREGS_INFO(ebx), \
-	PTREGS_INFO(esp), \
-	PTREGS_INFO(ebp), \
-	PTREGS_INFO(esi), \
-	PTREGS_INFO(edi), \
-	PTREGS_INFO(eip)
-
-#define UNW_DEFAULT_RA(raItem, dataAlign) \
-	((raItem).where == Memory && \
-	 !((raItem).value * (dataAlign) + 4))
-
-static inline void arch_unw_init_frame_info(struct unwind_frame_info *info,
-                                            /*const*/ struct pt_regs *regs)
-{
-	if (user_mode_vm(regs))
-		info->regs = *regs;
-	else {
-		memcpy(&info->regs, regs, offsetof(struct pt_regs, esp));
-		info->regs.esp = (unsigned long)&regs->esp;
-		info->regs.xss = __KERNEL_DS;
-	}
-}
-
-static inline void arch_unw_init_blocked(struct unwind_frame_info *info)
-{
-	memset(&info->regs, 0, sizeof(info->regs));
-	info->regs.eip = info->task->thread.eip;
-	info->regs.xcs = __KERNEL_CS;
-	__get_user(info->regs.ebp, (long *)info->task->thread.esp);
-	info->regs.esp = info->task->thread.esp;
-	info->regs.xss = __KERNEL_DS;
-	info->regs.xds = __USER_DS;
-	info->regs.xes = __USER_DS;
-	info->regs.xgs = __KERNEL_PDA;
-}
-
-extern asmlinkage int arch_unwind_init_running(struct unwind_frame_info *,
-                                               asmlinkage int (*callback)(struct unwind_frame_info *,
-                                                                          void *arg),
-                                               void *arg);
-
-static inline int arch_unw_user_mode(/*const*/ struct unwind_frame_info *info)
-{
-	return user_mode_vm(&info->regs)
-	       || info->regs.eip < PAGE_OFFSET
-	       || (info->regs.eip >= __fix_to_virt(FIX_VDSO)
-	           && info->regs.eip < __fix_to_virt(FIX_VDSO) + PAGE_SIZE)
-	       || info->regs.esp < PAGE_OFFSET;
-}
-
-#else
-
 #define UNW_PC(frame) ((void)(frame), 0)
 #define UNW_SP(frame) ((void)(frame), 0)
 #define UNW_FP(frame) ((void)(frame), 0)
@@ -99,6 +10,4 @@
 	return 0;
 }
 
-#endif
-
 #endif /* _ASM_I386_UNWIND_H */
diff --git a/include/asm-s390/qdio.h b/include/asm-s390/qdio.h
index 7189c79..127f72e 100644
--- a/include/asm-s390/qdio.h
+++ b/include/asm-s390/qdio.h
@@ -34,6 +34,7 @@
 #define QDIO_QETH_QFMT 0
 #define QDIO_ZFCP_QFMT 1
 #define QDIO_IQDIO_QFMT 2
+#define QDIO_IQDIO_QFMT_ASYNCH 3
 
 struct qdio_buffer_element{
 	unsigned int flags;
diff --git a/include/asm-s390/reset.h b/include/asm-s390/reset.h
index 9b439cf..532e65a 100644
--- a/include/asm-s390/reset.h
+++ b/include/asm-s390/reset.h
@@ -19,5 +19,6 @@
 extern void unregister_reset_call(struct reset_call *reset);
 extern void s390_reset_system(void);
 extern void (*s390_reset_mcck_handler)(void);
+extern void (*s390_reset_pgm_handler)(void);
 
 #endif /* _ASM_S390_RESET_H */
diff --git a/include/asm-x86_64/unwind.h b/include/asm-x86_64/unwind.h
index 2f6349e..02710f6 100644
--- a/include/asm-x86_64/unwind.h
+++ b/include/asm-x86_64/unwind.h
@@ -1,100 +1,6 @@
 #ifndef _ASM_X86_64_UNWIND_H
 #define _ASM_X86_64_UNWIND_H
 
-/*
- * Copyright (C) 2002-2006 Novell, Inc.
- *	Jan Beulich <jbeulich@novell.com>
- * This code is released under version 2 of the GNU GPL.
- */
-
-#ifdef CONFIG_STACK_UNWIND
-
-#include <linux/sched.h>
-#include <asm/ptrace.h>
-#include <asm/uaccess.h>
-#include <asm/vsyscall.h>
-
-struct unwind_frame_info
-{
-	struct pt_regs regs;
-	struct task_struct *task;
-	unsigned call_frame:1;
-};
-
-#define UNW_PC(frame)        (frame)->regs.rip
-#define UNW_SP(frame)        (frame)->regs.rsp
-#ifdef CONFIG_FRAME_POINTER
-#define UNW_FP(frame)        (frame)->regs.rbp
-#define FRAME_RETADDR_OFFSET 8
-#define FRAME_LINK_OFFSET    0
-#define STACK_BOTTOM(tsk)    (((tsk)->thread.rsp0 - 1) & ~(THREAD_SIZE - 1))
-#define STACK_TOP(tsk)       ((tsk)->thread.rsp0)
-#endif
-/* Might need to account for the special exception and interrupt handling
-   stacks here, since normally
-	EXCEPTION_STACK_ORDER < THREAD_ORDER < IRQSTACK_ORDER,
-   but the construct is needed only for getting across the stack switch to
-   the interrupt stack - thus considering the IRQ stack itself is unnecessary,
-   and the overhead of comparing against all exception handling stacks seems
-   not desirable. */
-#define STACK_LIMIT(ptr)     (((ptr) - 1) & ~(THREAD_SIZE - 1))
-
-#define UNW_REGISTER_INFO \
-	PTREGS_INFO(rax), \
-	PTREGS_INFO(rdx), \
-	PTREGS_INFO(rcx), \
-	PTREGS_INFO(rbx), \
-	PTREGS_INFO(rsi), \
-	PTREGS_INFO(rdi), \
-	PTREGS_INFO(rbp), \
-	PTREGS_INFO(rsp), \
-	PTREGS_INFO(r8), \
-	PTREGS_INFO(r9), \
-	PTREGS_INFO(r10), \
-	PTREGS_INFO(r11), \
-	PTREGS_INFO(r12), \
-	PTREGS_INFO(r13), \
-	PTREGS_INFO(r14), \
-	PTREGS_INFO(r15), \
-	PTREGS_INFO(rip)
-
-#define UNW_DEFAULT_RA(raItem, dataAlign) \
-	((raItem).where == Memory && \
-	 !((raItem).value * (dataAlign) + 8))
-
-static inline void arch_unw_init_frame_info(struct unwind_frame_info *info,
-                                            /*const*/ struct pt_regs *regs)
-{
-	info->regs = *regs;
-}
-
-static inline void arch_unw_init_blocked(struct unwind_frame_info *info)
-{
-	extern const char thread_return[];
-
-	memset(&info->regs, 0, sizeof(info->regs));
-	info->regs.rip = (unsigned long)thread_return;
-	info->regs.cs = __KERNEL_CS;
-	__get_user(info->regs.rbp, (unsigned long *)info->task->thread.rsp);
-	info->regs.rsp = info->task->thread.rsp;
-	info->regs.ss = __KERNEL_DS;
-}
-
-extern int arch_unwind_init_running(struct unwind_frame_info *,
-                                    int (*callback)(struct unwind_frame_info *,
-                                                    void *arg),
-                                    void *arg);
-
-static inline int arch_unw_user_mode(const struct unwind_frame_info *info)
-{
-	return user_mode(&info->regs)
-	       || (long)info->regs.rip >= 0
-	       || (info->regs.rip >= VSYSCALL_START && info->regs.rip < VSYSCALL_END)
-	       || (long)info->regs.rsp >= 0;
-}
-
-#else
-
 #define UNW_PC(frame) ((void)(frame), 0UL)
 #define UNW_SP(frame) ((void)(frame), 0UL)
 
@@ -103,6 +9,4 @@
 	return 0;
 }
 
-#endif
-
 #endif /* _ASM_X86_64_UNWIND_H */
diff --git a/include/linux/unwind.h b/include/linux/unwind.h
index 749928c..7760860 100644
--- a/include/linux/unwind.h
+++ b/include/linux/unwind.h
@@ -14,63 +14,6 @@
 
 struct module;
 
-#ifdef CONFIG_STACK_UNWIND
-
-#include <asm/unwind.h>
-
-#ifndef ARCH_UNWIND_SECTION_NAME
-#define ARCH_UNWIND_SECTION_NAME ".eh_frame"
-#endif
-
-/*
- * Initialize unwind support.
- */
-extern void unwind_init(void);
-extern void unwind_setup(void);
-
-#ifdef CONFIG_MODULES
-
-extern void *unwind_add_table(struct module *,
-                              const void *table_start,
-                              unsigned long table_size);
-
-extern void unwind_remove_table(void *handle, int init_only);
-
-#endif
-
-extern int unwind_init_frame_info(struct unwind_frame_info *,
-                                  struct task_struct *,
-                                  /*const*/ struct pt_regs *);
-
-/*
- * Prepare to unwind a blocked task.
- */
-extern int unwind_init_blocked(struct unwind_frame_info *,
-                               struct task_struct *);
-
-/*
- * Prepare to unwind the currently running thread.
- */
-extern int unwind_init_running(struct unwind_frame_info *,
-                               asmlinkage int (*callback)(struct unwind_frame_info *,
-                                                          void *arg),
-                               void *arg);
-
-/*
- * Unwind to previous to frame.  Returns 0 if successful, negative
- * number in case of an error.
- */
-extern int unwind(struct unwind_frame_info *);
-
-/*
- * Unwind until the return pointer is in user-land (or until an error
- * occurs).  Returns 0 if successful, negative number in case of
- * error.
- */
-extern int unwind_to_user(struct unwind_frame_info *);
-
-#else
-
 struct unwind_frame_info {};
 
 static inline void unwind_init(void) {}
@@ -85,12 +28,12 @@
 	return NULL;
 }
 
-#endif
-
 static inline void unwind_remove_table(void *handle, int init_only)
 {
 }
 
+#endif
+
 static inline int unwind_init_frame_info(struct unwind_frame_info *info,
                                          struct task_struct *tsk,
                                          const struct pt_regs *regs)
@@ -122,6 +65,4 @@
 	return -ENOSYS;
 }
 
-#endif
-
 #endif /* _LINUX_UNWIND_H */
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index edef8d5..2a7b38d 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -8,16 +8,21 @@
 #include <linux/timer.h>
 #include <linux/linkage.h>
 #include <linux/bitops.h>
+#include <asm/atomic.h>
 
 struct workqueue_struct;
 
 struct work_struct;
 typedef void (*work_func_t)(struct work_struct *work);
 
+/*
+ * The first word is the work queue pointer and the flags rolled into
+ * one
+ */
+#define work_data_bits(work) ((unsigned long *)(&(work)->data))
+
 struct work_struct {
-	/* the first word is the work queue pointer and the flags rolled into
-	 * one */
-	unsigned long management;
+	atomic_long_t data;
 #define WORK_STRUCT_PENDING 0		/* T if work item pending execution */
 #define WORK_STRUCT_NOAUTOREL 1		/* F if work item automatically released on exec */
 #define WORK_STRUCT_FLAG_MASK (3UL)
@@ -26,6 +31,9 @@
 	work_func_t func;
 };
 
+#define WORK_DATA_INIT(autorelease) \
+	ATOMIC_LONG_INIT((autorelease) << WORK_STRUCT_NOAUTOREL)
+
 struct delayed_work {
 	struct work_struct work;
 	struct timer_list timer;
@@ -36,13 +44,13 @@
 };
 
 #define __WORK_INITIALIZER(n, f) {				\
-	.management = 0,					\
+	.data = WORK_DATA_INIT(0),				\
         .entry	= { &(n).entry, &(n).entry },			\
 	.func = (f),						\
 	}
 
 #define __WORK_INITIALIZER_NAR(n, f) {				\
-	.management = (1 << WORK_STRUCT_NOAUTOREL),		\
+	.data = WORK_DATA_INIT(1),				\
         .entry	= { &(n).entry, &(n).entry },			\
 	.func = (f),						\
 	}
@@ -82,17 +90,21 @@
 
 /*
  * initialize all of a work item in one go
+ *
+ * NOTE! No point in using "atomic_long_set()": useing a direct
+ * assignment of the work data initializer allows the compiler
+ * to generate better code.
  */
 #define INIT_WORK(_work, _func)					\
 	do {							\
-		(_work)->management = 0;			\
+		(_work)->data = (atomic_long_t) WORK_DATA_INIT(0);	\
 		INIT_LIST_HEAD(&(_work)->entry);		\
 		PREPARE_WORK((_work), (_func));			\
 	} while (0)
 
 #define INIT_WORK_NAR(_work, _func)					\
 	do {								\
-		(_work)->management = (1 << WORK_STRUCT_NOAUTOREL);	\
+		(_work)->data = (atomic_long_t) WORK_DATA_INIT(1);	\
 		INIT_LIST_HEAD(&(_work)->entry);			\
 		PREPARE_WORK((_work), (_func));				\
 	} while (0)
@@ -114,15 +126,15 @@
  * @work: The work item in question
  */
 #define work_pending(work) \
-	test_bit(WORK_STRUCT_PENDING, &(work)->management)
+	test_bit(WORK_STRUCT_PENDING, work_data_bits(work))
 
 /**
  * delayed_work_pending - Find out whether a delayable work item is currently
  * pending
  * @work: The work item in question
  */
-#define delayed_work_pending(work) \
-	test_bit(WORK_STRUCT_PENDING, &(work)->work.management)
+#define delayed_work_pending(w) \
+	work_pending(&(w)->work)
 
 /**
  * work_release - Release a work item under execution
@@ -143,7 +155,7 @@
  * This should also be used to release a delayed work item.
  */
 #define work_release(work) \
-	clear_bit(WORK_STRUCT_PENDING, &(work)->management)
+	clear_bit(WORK_STRUCT_PENDING, work_data_bits(work))
 
 
 extern struct workqueue_struct *__create_workqueue(const char *name,
@@ -188,7 +200,7 @@
 
 	ret = del_timer_sync(&work->timer);
 	if (ret)
-		clear_bit(WORK_STRUCT_PENDING, &work->work.management);
+		work_release(&work->work);
 	return ret;
 }
 
diff --git a/kernel/Makefile b/kernel/Makefile
index 5e3f3b7..14f4d45 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -31,7 +31,6 @@
 obj-$(CONFIG_UID16) += uid16.o
 obj-$(CONFIG_MODULES) += module.o
 obj-$(CONFIG_KALLSYMS) += kallsyms.o
-obj-$(CONFIG_STACK_UNWIND) += unwind.o
 obj-$(CONFIG_PM) += power/
 obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
 obj-$(CONFIG_KEXEC) += kexec.o
diff --git a/kernel/unwind.c b/kernel/unwind.c
deleted file mode 100644
index 09c2613..0000000
--- a/kernel/unwind.c
+++ /dev/null
@@ -1,1305 +0,0 @@
-/*
- * Copyright (C) 2002-2006 Novell, Inc.
- *	Jan Beulich <jbeulich@novell.com>
- * This code is released under version 2 of the GNU GPL.
- *
- * A simple API for unwinding kernel stacks.  This is used for
- * debugging and error reporting purposes.  The kernel doesn't need
- * full-blown stack unwinding with all the bells and whistles, so there
- * is not much point in implementing the full Dwarf2 unwind API.
- */
-
-#include <linux/unwind.h>
-#include <linux/module.h>
-#include <linux/bootmem.h>
-#include <linux/sort.h>
-#include <linux/stop_machine.h>
-#include <linux/uaccess.h>
-#include <asm/sections.h>
-#include <asm/uaccess.h>
-#include <asm/unaligned.h>
-
-extern const char __start_unwind[], __end_unwind[];
-extern const u8 __start_unwind_hdr[], __end_unwind_hdr[];
-
-#define MAX_STACK_DEPTH 8
-
-#define EXTRA_INFO(f) { \
-		BUILD_BUG_ON_ZERO(offsetof(struct unwind_frame_info, f) \
-		                  % FIELD_SIZEOF(struct unwind_frame_info, f)) \
-		+ offsetof(struct unwind_frame_info, f) \
-		  / FIELD_SIZEOF(struct unwind_frame_info, f), \
-		FIELD_SIZEOF(struct unwind_frame_info, f) \
-	}
-#define PTREGS_INFO(f) EXTRA_INFO(regs.f)
-
-static const struct {
-	unsigned offs:BITS_PER_LONG / 2;
-	unsigned width:BITS_PER_LONG / 2;
-} reg_info[] = {
-	UNW_REGISTER_INFO
-};
-
-#undef PTREGS_INFO
-#undef EXTRA_INFO
-
-#ifndef REG_INVALID
-#define REG_INVALID(r) (reg_info[r].width == 0)
-#endif
-
-#define DW_CFA_nop                          0x00
-#define DW_CFA_set_loc                      0x01
-#define DW_CFA_advance_loc1                 0x02
-#define DW_CFA_advance_loc2                 0x03
-#define DW_CFA_advance_loc4                 0x04
-#define DW_CFA_offset_extended              0x05
-#define DW_CFA_restore_extended             0x06
-#define DW_CFA_undefined                    0x07
-#define DW_CFA_same_value                   0x08
-#define DW_CFA_register                     0x09
-#define DW_CFA_remember_state               0x0a
-#define DW_CFA_restore_state                0x0b
-#define DW_CFA_def_cfa                      0x0c
-#define DW_CFA_def_cfa_register             0x0d
-#define DW_CFA_def_cfa_offset               0x0e
-#define DW_CFA_def_cfa_expression           0x0f
-#define DW_CFA_expression                   0x10
-#define DW_CFA_offset_extended_sf           0x11
-#define DW_CFA_def_cfa_sf                   0x12
-#define DW_CFA_def_cfa_offset_sf            0x13
-#define DW_CFA_val_offset                   0x14
-#define DW_CFA_val_offset_sf                0x15
-#define DW_CFA_val_expression               0x16
-#define DW_CFA_lo_user                      0x1c
-#define DW_CFA_GNU_window_save              0x2d
-#define DW_CFA_GNU_args_size                0x2e
-#define DW_CFA_GNU_negative_offset_extended 0x2f
-#define DW_CFA_hi_user                      0x3f
-
-#define DW_EH_PE_FORM     0x07
-#define DW_EH_PE_native   0x00
-#define DW_EH_PE_leb128   0x01
-#define DW_EH_PE_data2    0x02
-#define DW_EH_PE_data4    0x03
-#define DW_EH_PE_data8    0x04
-#define DW_EH_PE_signed   0x08
-#define DW_EH_PE_ADJUST   0x70
-#define DW_EH_PE_abs      0x00
-#define DW_EH_PE_pcrel    0x10
-#define DW_EH_PE_textrel  0x20
-#define DW_EH_PE_datarel  0x30
-#define DW_EH_PE_funcrel  0x40
-#define DW_EH_PE_aligned  0x50
-#define DW_EH_PE_indirect 0x80
-#define DW_EH_PE_omit     0xff
-
-typedef unsigned long uleb128_t;
-typedef   signed long sleb128_t;
-#define sleb128abs __builtin_labs
-
-static struct unwind_table {
-	struct {
-		unsigned long pc;
-		unsigned long range;
-	} core, init;
-	const void *address;
-	unsigned long size;
-	const unsigned char *header;
-	unsigned long hdrsz;
-	struct unwind_table *link;
-	const char *name;
-} root_table;
-
-struct unwind_item {
-	enum item_location {
-		Nowhere,
-		Memory,
-		Register,
-		Value
-	} where;
-	uleb128_t value;
-};
-
-struct unwind_state {
-	uleb128_t loc, org;
-	const u8 *cieStart, *cieEnd;
-	uleb128_t codeAlign;
-	sleb128_t dataAlign;
-	struct cfa {
-		uleb128_t reg, offs;
-	} cfa;
-	struct unwind_item regs[ARRAY_SIZE(reg_info)];
-	unsigned stackDepth:8;
-	unsigned version:8;
-	const u8 *label;
-	const u8 *stack[MAX_STACK_DEPTH];
-};
-
-static const struct cfa badCFA = { ARRAY_SIZE(reg_info), 1 };
-
-static unsigned unwind_debug;
-static int __init unwind_debug_setup(char *s)
-{
-	unwind_debug = simple_strtoul(s, NULL, 0);
-	return 1;
-}
-__setup("unwind_debug=", unwind_debug_setup);
-#define dprintk(lvl, fmt, args...) \
-	((void)(lvl > unwind_debug \
-	 || printk(KERN_DEBUG "unwind: " fmt "\n", ##args)))
-
-static struct unwind_table *find_table(unsigned long pc)
-{
-	struct unwind_table *table;
-
-	for (table = &root_table; table; table = table->link)
-		if ((pc >= table->core.pc
-		     && pc < table->core.pc + table->core.range)
-		    || (pc >= table->init.pc
-		        && pc < table->init.pc + table->init.range))
-			break;
-
-	return table;
-}
-
-static unsigned long read_pointer(const u8 **pLoc,
-                                  const void *end,
-                                  signed ptrType,
-                                  unsigned long text_base,
-                                  unsigned long data_base);
-
-static void init_unwind_table(struct unwind_table *table,
-                              const char *name,
-                              const void *core_start,
-                              unsigned long core_size,
-                              const void *init_start,
-                              unsigned long init_size,
-                              const void *table_start,
-                              unsigned long table_size,
-                              const u8 *header_start,
-                              unsigned long header_size)
-{
-	const u8 *ptr = header_start + 4;
-	const u8 *end = header_start + header_size;
-
-	table->core.pc = (unsigned long)core_start;
-	table->core.range = core_size;
-	table->init.pc = (unsigned long)init_start;
-	table->init.range = init_size;
-	table->address = table_start;
-	table->size = table_size;
-	/* See if the linker provided table looks valid. */
-	if (header_size <= 4
-	    || header_start[0] != 1
-	    || (void *)read_pointer(&ptr, end, header_start[1], 0, 0)
-	       != table_start
-	    || !read_pointer(&ptr, end, header_start[2], 0, 0)
-	    || !read_pointer(&ptr, end, header_start[3], 0,
-	                     (unsigned long)header_start)
-	    || !read_pointer(&ptr, end, header_start[3], 0,
-	                     (unsigned long)header_start))
-		header_start = NULL;
-	table->hdrsz = header_size;
-	smp_wmb();
-	table->header = header_start;
-	table->link = NULL;
-	table->name = name;
-}
-
-void __init unwind_init(void)
-{
-	init_unwind_table(&root_table, "kernel",
-	                  _text, _end - _text,
-	                  NULL, 0,
-	                  __start_unwind, __end_unwind - __start_unwind,
-	                  __start_unwind_hdr, __end_unwind_hdr - __start_unwind_hdr);
-}
-
-static const u32 bad_cie, not_fde;
-static const u32 *cie_for_fde(const u32 *fde, const struct unwind_table *);
-static signed fde_pointer_type(const u32 *cie);
-
-struct eh_frame_hdr_table_entry {
-	unsigned long start, fde;
-};
-
-static int cmp_eh_frame_hdr_table_entries(const void *p1, const void *p2)
-{
-	const struct eh_frame_hdr_table_entry *e1 = p1;
-	const struct eh_frame_hdr_table_entry *e2 = p2;
-
-	return (e1->start > e2->start) - (e1->start < e2->start);
-}
-
-static void swap_eh_frame_hdr_table_entries(void *p1, void *p2, int size)
-{
-	struct eh_frame_hdr_table_entry *e1 = p1;
-	struct eh_frame_hdr_table_entry *e2 = p2;
-	unsigned long v;
-
-	v = e1->start;
-	e1->start = e2->start;
-	e2->start = v;
-	v = e1->fde;
-	e1->fde = e2->fde;
-	e2->fde = v;
-}
-
-static void __init setup_unwind_table(struct unwind_table *table,
-					void *(*alloc)(unsigned long))
-{
-	const u8 *ptr;
-	unsigned long tableSize = table->size, hdrSize;
-	unsigned n;
-	const u32 *fde;
-	struct {
-		u8 version;
-		u8 eh_frame_ptr_enc;
-		u8 fde_count_enc;
-		u8 table_enc;
-		unsigned long eh_frame_ptr;
-		unsigned int fde_count;
-		struct eh_frame_hdr_table_entry table[];
-	} __attribute__((__packed__)) *header;
-
-	if (table->header)
-		return;
-
-	if (table->hdrsz)
-		printk(KERN_WARNING ".eh_frame_hdr for '%s' present but unusable\n",
-		       table->name);
-
-	if (tableSize & (sizeof(*fde) - 1))
-		return;
-
-	for (fde = table->address, n = 0;
-	     tableSize > sizeof(*fde) && tableSize - sizeof(*fde) >= *fde;
-	     tableSize -= sizeof(*fde) + *fde, fde += 1 + *fde / sizeof(*fde)) {
-		const u32 *cie = cie_for_fde(fde, table);
-		signed ptrType;
-
-		if (cie == &not_fde)
-			continue;
-		if (cie == NULL
-		    || cie == &bad_cie
-		    || (ptrType = fde_pointer_type(cie)) < 0)
-			return;
-		ptr = (const u8 *)(fde + 2);
-		if (!read_pointer(&ptr,
-		                  (const u8 *)(fde + 1) + *fde,
-		                  ptrType, 0, 0))
-			return;
-		++n;
-	}
-
-	if (tableSize || !n)
-		return;
-
-	hdrSize = 4 + sizeof(unsigned long) + sizeof(unsigned int)
-	        + 2 * n * sizeof(unsigned long);
-	dprintk(2, "Binary lookup table size for %s: %lu bytes", table->name, hdrSize);
-	header = alloc(hdrSize);
-	if (!header)
-		return;
-	header->version          = 1;
-	header->eh_frame_ptr_enc = DW_EH_PE_abs|DW_EH_PE_native;
-	header->fde_count_enc    = DW_EH_PE_abs|DW_EH_PE_data4;
-	header->table_enc        = DW_EH_PE_abs|DW_EH_PE_native;
-	put_unaligned((unsigned long)table->address, &header->eh_frame_ptr);
-	BUILD_BUG_ON(offsetof(typeof(*header), fde_count)
-	             % __alignof(typeof(header->fde_count)));
-	header->fde_count        = n;
-
-	BUILD_BUG_ON(offsetof(typeof(*header), table)
-	             % __alignof(typeof(*header->table)));
-	for (fde = table->address, tableSize = table->size, n = 0;
-	     tableSize;
-	     tableSize -= sizeof(*fde) + *fde, fde += 1 + *fde / sizeof(*fde)) {
-		const u32 *cie = fde + 1 - fde[1] / sizeof(*fde);
-
-		if (!fde[1])
-			continue; /* this is a CIE */
-		ptr = (const u8 *)(fde + 2);
-		header->table[n].start = read_pointer(&ptr,
-		                                      (const u8 *)(fde + 1) + *fde,
-		                                      fde_pointer_type(cie), 0, 0);
-		header->table[n].fde = (unsigned long)fde;
-		++n;
-	}
-	WARN_ON(n != header->fde_count);
-
-	sort(header->table,
-	     n,
-	     sizeof(*header->table),
-	     cmp_eh_frame_hdr_table_entries,
-	     swap_eh_frame_hdr_table_entries);
-
-	table->hdrsz = hdrSize;
-	smp_wmb();
-	table->header = (const void *)header;
-}
-
-static void *__init balloc(unsigned long sz)
-{
-	return __alloc_bootmem_nopanic(sz,
-	                               sizeof(unsigned int),
-	                               __pa(MAX_DMA_ADDRESS));
-}
-
-void __init unwind_setup(void)
-{
-	setup_unwind_table(&root_table, balloc);
-}
-
-#ifdef CONFIG_MODULES
-
-static struct unwind_table *last_table;
-
-/* Must be called with module_mutex held. */
-void *unwind_add_table(struct module *module,
-                       const void *table_start,
-                       unsigned long table_size)
-{
-	struct unwind_table *table;
-
-	if (table_size <= 0)
-		return NULL;
-
-	table = kmalloc(sizeof(*table), GFP_KERNEL);
-	if (!table)
-		return NULL;
-
-	init_unwind_table(table, module->name,
-	                  module->module_core, module->core_size,
-	                  module->module_init, module->init_size,
-	                  table_start, table_size,
-	                  NULL, 0);
-
-	if (last_table)
-		last_table->link = table;
-	else
-		root_table.link = table;
-	last_table = table;
-
-	return table;
-}
-
-struct unlink_table_info
-{
-	struct unwind_table *table;
-	int init_only;
-};
-
-static int unlink_table(void *arg)
-{
-	struct unlink_table_info *info = arg;
-	struct unwind_table *table = info->table, *prev;
-
-	for (prev = &root_table; prev->link && prev->link != table; prev = prev->link)
-		;
-
-	if (prev->link) {
-		if (info->init_only) {
-			table->init.pc = 0;
-			table->init.range = 0;
-			info->table = NULL;
-		} else {
-			prev->link = table->link;
-			if (!prev->link)
-				last_table = prev;
-		}
-	} else
-		info->table = NULL;
-
-	return 0;
-}
-
-/* Must be called with module_mutex held. */
-void unwind_remove_table(void *handle, int init_only)
-{
-	struct unwind_table *table = handle;
-	struct unlink_table_info info;
-
-	if (!table || table == &root_table)
-		return;
-
-	if (init_only && table == last_table) {
-		table->init.pc = 0;
-		table->init.range = 0;
-		return;
-	}
-
-	info.table = table;
-	info.init_only = init_only;
-	stop_machine_run(unlink_table, &info, NR_CPUS);
-
-	if (info.table)
-		kfree(table);
-}
-
-#endif /* CONFIG_MODULES */
-
-static uleb128_t get_uleb128(const u8 **pcur, const u8 *end)
-{
-	const u8 *cur = *pcur;
-	uleb128_t value;
-	unsigned shift;
-
-	for (shift = 0, value = 0; cur < end; shift += 7) {
-		if (shift + 7 > 8 * sizeof(value)
-		    && (*cur & 0x7fU) >= (1U << (8 * sizeof(value) - shift))) {
-			cur = end + 1;
-			break;
-		}
-		value |= (uleb128_t)(*cur & 0x7f) << shift;
-		if (!(*cur++ & 0x80))
-			break;
-	}
-	*pcur = cur;
-
-	return value;
-}
-
-static sleb128_t get_sleb128(const u8 **pcur, const u8 *end)
-{
-	const u8 *cur = *pcur;
-	sleb128_t value;
-	unsigned shift;
-
-	for (shift = 0, value = 0; cur < end; shift += 7) {
-		if (shift + 7 > 8 * sizeof(value)
-		    && (*cur & 0x7fU) >= (1U << (8 * sizeof(value) - shift))) {
-			cur = end + 1;
-			break;
-		}
-		value |= (sleb128_t)(*cur & 0x7f) << shift;
-		if (!(*cur & 0x80)) {
-			value |= -(*cur++ & 0x40) << shift;
-			break;
-		}
-	}
-	*pcur = cur;
-
-	return value;
-}
-
-static const u32 *cie_for_fde(const u32 *fde, const struct unwind_table *table)
-{
-	const u32 *cie;
-
-	if (!*fde || (*fde & (sizeof(*fde) - 1)))
-		return &bad_cie;
-	if (!fde[1])
-		return &not_fde; /* this is a CIE */
-	if ((fde[1] & (sizeof(*fde) - 1))
-	    || fde[1] > (unsigned long)(fde + 1) - (unsigned long)table->address)
-		return NULL; /* this is not a valid FDE */
-	cie = fde + 1 - fde[1] / sizeof(*fde);
-	if (*cie <= sizeof(*cie) + 4
-	    || *cie >= fde[1] - sizeof(*fde)
-	    || (*cie & (sizeof(*cie) - 1))
-	    || cie[1])
-		return NULL; /* this is not a (valid) CIE */
-	return cie;
-}
-
-static unsigned long read_pointer(const u8 **pLoc,
-                                  const void *end,
-                                  signed ptrType,
-                                  unsigned long text_base,
-                                  unsigned long data_base)
-{
-	unsigned long value = 0;
-	union {
-		const u8 *p8;
-		const u16 *p16u;
-		const s16 *p16s;
-		const u32 *p32u;
-		const s32 *p32s;
-		const unsigned long *pul;
-	} ptr;
-
-	if (ptrType < 0 || ptrType == DW_EH_PE_omit) {
-		dprintk(1, "Invalid pointer encoding %02X (%p,%p).", ptrType, *pLoc, end);
-		return 0;
-	}
-	ptr.p8 = *pLoc;
-	switch(ptrType & DW_EH_PE_FORM) {
-	case DW_EH_PE_data2:
-		if (end < (const void *)(ptr.p16u + 1)) {
-			dprintk(1, "Data16 overrun (%p,%p).", ptr.p8, end);
-			return 0;
-		}
-		if(ptrType & DW_EH_PE_signed)
-			value = get_unaligned(ptr.p16s++);
-		else
-			value = get_unaligned(ptr.p16u++);
-		break;
-	case DW_EH_PE_data4:
-#ifdef CONFIG_64BIT
-		if (end < (const void *)(ptr.p32u + 1)) {
-			dprintk(1, "Data32 overrun (%p,%p).", ptr.p8, end);
-			return 0;
-		}
-		if(ptrType & DW_EH_PE_signed)
-			value = get_unaligned(ptr.p32s++);
-		else
-			value = get_unaligned(ptr.p32u++);
-		break;
-	case DW_EH_PE_data8:
-		BUILD_BUG_ON(sizeof(u64) != sizeof(value));
-#else
-		BUILD_BUG_ON(sizeof(u32) != sizeof(value));
-#endif
-	case DW_EH_PE_native:
-		if (end < (const void *)(ptr.pul + 1)) {
-			dprintk(1, "DataUL overrun (%p,%p).", ptr.p8, end);
-			return 0;
-		}
-		value = get_unaligned(ptr.pul++);
-		break;
-	case DW_EH_PE_leb128:
-		BUILD_BUG_ON(sizeof(uleb128_t) > sizeof(value));
-		value = ptrType & DW_EH_PE_signed
-		        ? get_sleb128(&ptr.p8, end)
-		        : get_uleb128(&ptr.p8, end);
-		if ((const void *)ptr.p8 > end) {
-			dprintk(1, "DataLEB overrun (%p,%p).", ptr.p8, end);
-			return 0;
-		}
-		break;
-	default:
-		dprintk(2, "Cannot decode pointer type %02X (%p,%p).",
-		        ptrType, ptr.p8, end);
-		return 0;
-	}
-	switch(ptrType & DW_EH_PE_ADJUST) {
-	case DW_EH_PE_abs:
-		break;
-	case DW_EH_PE_pcrel:
-		value += (unsigned long)*pLoc;
-		break;
-	case DW_EH_PE_textrel:
-		if (likely(text_base)) {
-			value += text_base;
-			break;
-		}
-		dprintk(2, "Text-relative encoding %02X (%p,%p), but zero text base.",
-		        ptrType, *pLoc, end);
-		return 0;
-	case DW_EH_PE_datarel:
-		if (likely(data_base)) {
-			value += data_base;
-			break;
-		}
-		dprintk(2, "Data-relative encoding %02X (%p,%p), but zero data base.",
-		        ptrType, *pLoc, end);
-		return 0;
-	default:
-		dprintk(2, "Cannot adjust pointer type %02X (%p,%p).",
-		        ptrType, *pLoc, end);
-		return 0;
-	}
-	if ((ptrType & DW_EH_PE_indirect)
-	    && probe_kernel_address((unsigned long *)value, value)) {
-		dprintk(1, "Cannot read indirect value %lx (%p,%p).",
-		        value, *pLoc, end);
-		return 0;
-	}
-	*pLoc = ptr.p8;
-
-	return value;
-}
-
-static signed fde_pointer_type(const u32 *cie)
-{
-	const u8 *ptr = (const u8 *)(cie + 2);
-	unsigned version = *ptr;
-
-	if (version != 1)
-		return -1; /* unsupported */
-	if (*++ptr) {
-		const char *aug;
-		const u8 *end = (const u8 *)(cie + 1) + *cie;
-		uleb128_t len;
-
-		/* check if augmentation size is first (and thus present) */
-		if (*ptr != 'z')
-			return -1;
-		/* check if augmentation string is nul-terminated */
-		if ((ptr = memchr(aug = (const void *)ptr, 0, end - ptr)) == NULL)
-			return -1;
-		++ptr; /* skip terminator */
-		get_uleb128(&ptr, end); /* skip code alignment */
-		get_sleb128(&ptr, end); /* skip data alignment */
-		/* skip return address column */
-		version <= 1 ? (void)++ptr : (void)get_uleb128(&ptr, end);
-		len = get_uleb128(&ptr, end); /* augmentation length */
-		if (ptr + len < ptr || ptr + len > end)
-			return -1;
-		end = ptr + len;
-		while (*++aug) {
-			if (ptr >= end)
-				return -1;
-			switch(*aug) {
-			case 'L':
-				++ptr;
-				break;
-			case 'P': {
-					signed ptrType = *ptr++;
-
-					if (!read_pointer(&ptr, end, ptrType, 0, 0)
-					    || ptr > end)
-						return -1;
-				}
-				break;
-			case 'R':
-				return *ptr;
-			default:
-				return -1;
-			}
-		}
-	}
-	return DW_EH_PE_native|DW_EH_PE_abs;
-}
-
-static int advance_loc(unsigned long delta, struct unwind_state *state)
-{
-	state->loc += delta * state->codeAlign;
-
-	return delta > 0;
-}
-
-static void set_rule(uleb128_t reg,
-                     enum item_location where,
-                     uleb128_t value,
-                     struct unwind_state *state)
-{
-	if (reg < ARRAY_SIZE(state->regs)) {
-		state->regs[reg].where = where;
-		state->regs[reg].value = value;
-	}
-}
-
-static int processCFI(const u8 *start,
-                      const u8 *end,
-                      unsigned long targetLoc,
-                      signed ptrType,
-                      struct unwind_state *state)
-{
-	union {
-		const u8 *p8;
-		const u16 *p16;
-		const u32 *p32;
-	} ptr;
-	int result = 1;
-
-	if (start != state->cieStart) {
-		state->loc = state->org;
-		result = processCFI(state->cieStart, state->cieEnd, 0, ptrType, state);
-		if (targetLoc == 0 && state->label == NULL)
-			return result;
-	}
-	for (ptr.p8 = start; result && ptr.p8 < end; ) {
-		switch(*ptr.p8 >> 6) {
-			uleb128_t value;
-
-		case 0:
-			switch(*ptr.p8++) {
-			case DW_CFA_nop:
-				break;
-			case DW_CFA_set_loc:
-				state->loc = read_pointer(&ptr.p8, end, ptrType, 0, 0);
-				if (state->loc == 0)
-					result = 0;
-				break;
-			case DW_CFA_advance_loc1:
-				result = ptr.p8 < end && advance_loc(*ptr.p8++, state);
-				break;
-			case DW_CFA_advance_loc2:
-				result = ptr.p8 <= end + 2
-				         && advance_loc(*ptr.p16++, state);
-				break;
-			case DW_CFA_advance_loc4:
-				result = ptr.p8 <= end + 4
-				         && advance_loc(*ptr.p32++, state);
-				break;
-			case DW_CFA_offset_extended:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value, Memory, get_uleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_val_offset:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value, Value, get_uleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_offset_extended_sf:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value, Memory, get_sleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_val_offset_sf:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value, Value, get_sleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_restore_extended:
-			case DW_CFA_undefined:
-			case DW_CFA_same_value:
-				set_rule(get_uleb128(&ptr.p8, end), Nowhere, 0, state);
-				break;
-			case DW_CFA_register:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value,
-				         Register,
-				         get_uleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_remember_state:
-				if (ptr.p8 == state->label) {
-					state->label = NULL;
-					return 1;
-				}
-				if (state->stackDepth >= MAX_STACK_DEPTH) {
-					dprintk(1, "State stack overflow (%p,%p).", ptr.p8, end);
-					return 0;
-				}
-				state->stack[state->stackDepth++] = ptr.p8;
-				break;
-			case DW_CFA_restore_state:
-				if (state->stackDepth) {
-					const uleb128_t loc = state->loc;
-					const u8 *label = state->label;
-
-					state->label = state->stack[state->stackDepth - 1];
-					memcpy(&state->cfa, &badCFA, sizeof(state->cfa));
-					memset(state->regs, 0, sizeof(state->regs));
-					state->stackDepth = 0;
-					result = processCFI(start, end, 0, ptrType, state);
-					state->loc = loc;
-					state->label = label;
-				} else {
-					dprintk(1, "State stack underflow (%p,%p).", ptr.p8, end);
-					return 0;
-				}
-				break;
-			case DW_CFA_def_cfa:
-				state->cfa.reg = get_uleb128(&ptr.p8, end);
-				/*nobreak*/
-			case DW_CFA_def_cfa_offset:
-				state->cfa.offs = get_uleb128(&ptr.p8, end);
-				break;
-			case DW_CFA_def_cfa_sf:
-				state->cfa.reg = get_uleb128(&ptr.p8, end);
-				/*nobreak*/
-			case DW_CFA_def_cfa_offset_sf:
-				state->cfa.offs = get_sleb128(&ptr.p8, end)
-				                  * state->dataAlign;
-				break;
-			case DW_CFA_def_cfa_register:
-				state->cfa.reg = get_uleb128(&ptr.p8, end);
-				break;
-			/*todo case DW_CFA_def_cfa_expression: */
-			/*todo case DW_CFA_expression: */
-			/*todo case DW_CFA_val_expression: */
-			case DW_CFA_GNU_args_size:
-				get_uleb128(&ptr.p8, end);
-				break;
-			case DW_CFA_GNU_negative_offset_extended:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value,
-				         Memory,
-				         (uleb128_t)0 - get_uleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_GNU_window_save:
-			default:
-				dprintk(1, "Unrecognized CFI op %02X (%p,%p).", ptr.p8[-1], ptr.p8 - 1, end);
-				result = 0;
-				break;
-			}
-			break;
-		case 1:
-			result = advance_loc(*ptr.p8++ & 0x3f, state);
-			break;
-		case 2:
-			value = *ptr.p8++ & 0x3f;
-			set_rule(value, Memory, get_uleb128(&ptr.p8, end), state);
-			break;
-		case 3:
-			set_rule(*ptr.p8++ & 0x3f, Nowhere, 0, state);
-			break;
-		}
-		if (ptr.p8 > end) {
-			dprintk(1, "Data overrun (%p,%p).", ptr.p8, end);
-			result = 0;
-		}
-		if (result && targetLoc != 0 && targetLoc < state->loc)
-			return 1;
-	}
-
-	if (result && ptr.p8 < end)
-		dprintk(1, "Data underrun (%p,%p).", ptr.p8, end);
-
-	return result
-	   && ptr.p8 == end
-	   && (targetLoc == 0
-	    || (/*todo While in theory this should apply, gcc in practice omits
-	          everything past the function prolog, and hence the location
-	          never reaches the end of the function.
-	        targetLoc < state->loc &&*/ state->label == NULL));
-}
-
-/* Unwind to previous to frame.  Returns 0 if successful, negative
- * number in case of an error. */
-int unwind(struct unwind_frame_info *frame)
-{
-#define FRAME_REG(r, t) (((t *)frame)[reg_info[r].offs])
-	const u32 *fde = NULL, *cie = NULL;
-	const u8 *ptr = NULL, *end = NULL;
-	unsigned long pc = UNW_PC(frame) - frame->call_frame, sp;
-	unsigned long startLoc = 0, endLoc = 0, cfa;
-	unsigned i;
-	signed ptrType = -1;
-	uleb128_t retAddrReg = 0;
-	const struct unwind_table *table;
-	struct unwind_state state;
-
-	if (UNW_PC(frame) == 0)
-		return -EINVAL;
-	if ((table = find_table(pc)) != NULL
-	    && !(table->size & (sizeof(*fde) - 1))) {
-		const u8 *hdr = table->header;
-		unsigned long tableSize;
-
-		smp_rmb();
-		if (hdr && hdr[0] == 1) {
-			switch(hdr[3] & DW_EH_PE_FORM) {
-			case DW_EH_PE_native: tableSize = sizeof(unsigned long); break;
-			case DW_EH_PE_data2: tableSize = 2; break;
-			case DW_EH_PE_data4: tableSize = 4; break;
-			case DW_EH_PE_data8: tableSize = 8; break;
-			default: tableSize = 0; break;
-			}
-			ptr = hdr + 4;
-			end = hdr + table->hdrsz;
-			if (tableSize
-			    && read_pointer(&ptr, end, hdr[1], 0, 0)
-			       == (unsigned long)table->address
-			    && (i = read_pointer(&ptr, end, hdr[2], 0, 0)) > 0
-			    && i == (end - ptr) / (2 * tableSize)
-			    && !((end - ptr) % (2 * tableSize))) {
-				do {
-					const u8 *cur = ptr + (i / 2) * (2 * tableSize);
-
-					startLoc = read_pointer(&cur,
-					                        cur + tableSize,
-					                        hdr[3], 0,
-					                        (unsigned long)hdr);
-					if (pc < startLoc)
-						i /= 2;
-					else {
-						ptr = cur - tableSize;
-						i = (i + 1) / 2;
-					}
-				} while (startLoc && i > 1);
-				if (i == 1
-				    && (startLoc = read_pointer(&ptr,
-				                                ptr + tableSize,
-				                                hdr[3], 0,
-				                                (unsigned long)hdr)) != 0
-				    && pc >= startLoc)
-					fde = (void *)read_pointer(&ptr,
-					                           ptr + tableSize,
-					                           hdr[3], 0,
-					                           (unsigned long)hdr);
-			}
-		}
-		if(hdr && !fde)
-			dprintk(3, "Binary lookup for %lx failed.", pc);
-
-		if (fde != NULL) {
-			cie = cie_for_fde(fde, table);
-			ptr = (const u8 *)(fde + 2);
-			if(cie != NULL
-			   && cie != &bad_cie
-			   && cie != &not_fde
-			   && (ptrType = fde_pointer_type(cie)) >= 0
-			   && read_pointer(&ptr,
-			                   (const u8 *)(fde + 1) + *fde,
-			                   ptrType, 0, 0) == startLoc) {
-				if (!(ptrType & DW_EH_PE_indirect))
-					ptrType &= DW_EH_PE_FORM|DW_EH_PE_signed;
-				endLoc = startLoc
-				         + read_pointer(&ptr,
-				                        (const u8 *)(fde + 1) + *fde,
-				                        ptrType, 0, 0);
-				if(pc >= endLoc)
-					fde = NULL;
-			} else
-				fde = NULL;
-			if(!fde)
-				dprintk(1, "Binary lookup result for %lx discarded.", pc);
-		}
-		if (fde == NULL) {
-			for (fde = table->address, tableSize = table->size;
-			     cie = NULL, tableSize > sizeof(*fde)
-			     && tableSize - sizeof(*fde) >= *fde;
-			     tableSize -= sizeof(*fde) + *fde,
-			     fde += 1 + *fde / sizeof(*fde)) {
-				cie = cie_for_fde(fde, table);
-				if (cie == &bad_cie) {
-					cie = NULL;
-					break;
-				}
-				if (cie == NULL
-				    || cie == &not_fde
-				    || (ptrType = fde_pointer_type(cie)) < 0)
-					continue;
-				ptr = (const u8 *)(fde + 2);
-				startLoc = read_pointer(&ptr,
-				                        (const u8 *)(fde + 1) + *fde,
-				                        ptrType, 0, 0);
-				if (!startLoc)
-					continue;
-				if (!(ptrType & DW_EH_PE_indirect))
-					ptrType &= DW_EH_PE_FORM|DW_EH_PE_signed;
-				endLoc = startLoc
-				         + read_pointer(&ptr,
-				                        (const u8 *)(fde + 1) + *fde,
-				                        ptrType, 0, 0);
-				if (pc >= startLoc && pc < endLoc)
-					break;
-			}
-			if(!fde)
-				dprintk(3, "Linear lookup for %lx failed.", pc);
-		}
-	}
-	if (cie != NULL) {
-		memset(&state, 0, sizeof(state));
-		state.cieEnd = ptr; /* keep here temporarily */
-		ptr = (const u8 *)(cie + 2);
-		end = (const u8 *)(cie + 1) + *cie;
-		frame->call_frame = 1;
-		if ((state.version = *ptr) != 1)
-			cie = NULL; /* unsupported version */
-		else if (*++ptr) {
-			/* check if augmentation size is first (and thus present) */
-			if (*ptr == 'z') {
-				while (++ptr < end && *ptr) {
-					switch(*ptr) {
-					/* check for ignorable (or already handled)
-					 * nul-terminated augmentation string */
-					case 'L':
-					case 'P':
-					case 'R':
-						continue;
-					case 'S':
-						frame->call_frame = 0;
-						continue;
-					default:
-						break;
-					}
-					break;
-				}
-			}
-			if (ptr >= end || *ptr)
-				cie = NULL;
-		}
-		if(!cie)
-			dprintk(1, "CIE unusable (%p,%p).", ptr, end);
-		++ptr;
-	}
-	if (cie != NULL) {
-		/* get code aligment factor */
-		state.codeAlign = get_uleb128(&ptr, end);
-		/* get data aligment factor */
-		state.dataAlign = get_sleb128(&ptr, end);
-		if (state.codeAlign == 0 || state.dataAlign == 0 || ptr >= end)
-			cie = NULL;
-		else if (UNW_PC(frame) % state.codeAlign
-		         || UNW_SP(frame) % sleb128abs(state.dataAlign)) {
-			dprintk(1, "Input pointer(s) misaligned (%lx,%lx).",
-			        UNW_PC(frame), UNW_SP(frame));
-			return -EPERM;
-		} else {
-			retAddrReg = state.version <= 1 ? *ptr++ : get_uleb128(&ptr, end);
-			/* skip augmentation */
-			if (((const char *)(cie + 2))[1] == 'z') {
-				uleb128_t augSize = get_uleb128(&ptr, end);
-
-				ptr += augSize;
-			}
-			if (ptr > end
-			   || retAddrReg >= ARRAY_SIZE(reg_info)
-			   || REG_INVALID(retAddrReg)
-			   || reg_info[retAddrReg].width != sizeof(unsigned long))
-				cie = NULL;
-		}
-		if(!cie)
-			dprintk(1, "CIE validation failed (%p,%p).", ptr, end);
-	}
-	if (cie != NULL) {
-		state.cieStart = ptr;
-		ptr = state.cieEnd;
-		state.cieEnd = end;
-		end = (const u8 *)(fde + 1) + *fde;
-		/* skip augmentation */
-		if (((const char *)(cie + 2))[1] == 'z') {
-			uleb128_t augSize = get_uleb128(&ptr, end);
-
-			if ((ptr += augSize) > end)
-				fde = NULL;
-		}
-		if(!fde)
-			dprintk(1, "FDE validation failed (%p,%p).", ptr, end);
-	}
-	if (cie == NULL || fde == NULL) {
-#ifdef CONFIG_FRAME_POINTER
-		unsigned long top, bottom;
-
-		if ((UNW_SP(frame) | UNW_FP(frame)) % sizeof(unsigned long))
-			return -EPERM;
-		top = STACK_TOP(frame->task);
-		bottom = STACK_BOTTOM(frame->task);
-# if FRAME_RETADDR_OFFSET < 0
-		if (UNW_SP(frame) < top
-		    && UNW_FP(frame) <= UNW_SP(frame)
-		    && bottom < UNW_FP(frame)
-# else
-		if (UNW_SP(frame) > top
-		    && UNW_FP(frame) >= UNW_SP(frame)
-		    && bottom > UNW_FP(frame)
-# endif
-		   && !((UNW_SP(frame) | UNW_FP(frame))
-		        & (sizeof(unsigned long) - 1))) {
-			unsigned long link;
-
-			if (!probe_kernel_address(
-			                (unsigned long *)(UNW_FP(frame)
-			                                  + FRAME_LINK_OFFSET),
-						  link)
-# if FRAME_RETADDR_OFFSET < 0
-			   && link > bottom && link < UNW_FP(frame)
-# else
-			   && link > UNW_FP(frame) && link < bottom
-# endif
-			   && !(link & (sizeof(link) - 1))
-			   && !probe_kernel_address(
-			                  (unsigned long *)(UNW_FP(frame)
-			                                    + FRAME_RETADDR_OFFSET), UNW_PC(frame))) {
-				UNW_SP(frame) = UNW_FP(frame) + FRAME_RETADDR_OFFSET
-# if FRAME_RETADDR_OFFSET < 0
-					-
-# else
-					+
-# endif
-					  sizeof(UNW_PC(frame));
-				UNW_FP(frame) = link;
-				return 0;
-			}
-		}
-#endif
-		return -ENXIO;
-	}
-	state.org = startLoc;
-	memcpy(&state.cfa, &badCFA, sizeof(state.cfa));
-	/* process instructions */
-	if (!processCFI(ptr, end, pc, ptrType, &state)
-	   || state.loc > endLoc
-	   || state.regs[retAddrReg].where == Nowhere
-	   || state.cfa.reg >= ARRAY_SIZE(reg_info)
-	   || reg_info[state.cfa.reg].width != sizeof(unsigned long)
-	   || FRAME_REG(state.cfa.reg, unsigned long) % sizeof(unsigned long)
-	   || state.cfa.offs % sizeof(unsigned long)) {
-		dprintk(1, "Unusable unwind info (%p,%p).", ptr, end);
-		return -EIO;
-	}
-	/* update frame */
-#ifndef CONFIG_AS_CFI_SIGNAL_FRAME
-	if(frame->call_frame
-	   && !UNW_DEFAULT_RA(state.regs[retAddrReg], state.dataAlign))
-		frame->call_frame = 0;
-#endif
-	cfa = FRAME_REG(state.cfa.reg, unsigned long) + state.cfa.offs;
-	startLoc = min((unsigned long)UNW_SP(frame), cfa);
-	endLoc = max((unsigned long)UNW_SP(frame), cfa);
-	if (STACK_LIMIT(startLoc) != STACK_LIMIT(endLoc)) {
-		startLoc = min(STACK_LIMIT(cfa), cfa);
-		endLoc = max(STACK_LIMIT(cfa), cfa);
-	}
-#ifndef CONFIG_64BIT
-# define CASES CASE(8); CASE(16); CASE(32)
-#else
-# define CASES CASE(8); CASE(16); CASE(32); CASE(64)
-#endif
-	pc = UNW_PC(frame);
-	sp = UNW_SP(frame);
-	for (i = 0; i < ARRAY_SIZE(state.regs); ++i) {
-		if (REG_INVALID(i)) {
-			if (state.regs[i].where == Nowhere)
-				continue;
-			dprintk(1, "Cannot restore register %u (%d).",
-			        i, state.regs[i].where);
-			return -EIO;
-		}
-		switch(state.regs[i].where) {
-		default:
-			break;
-		case Register:
-			if (state.regs[i].value >= ARRAY_SIZE(reg_info)
-			   || REG_INVALID(state.regs[i].value)
-			   || reg_info[i].width > reg_info[state.regs[i].value].width) {
-				dprintk(1, "Cannot restore register %u from register %lu.",
-				        i, state.regs[i].value);
-				return -EIO;
-			}
-			switch(reg_info[state.regs[i].value].width) {
-#define CASE(n) \
-			case sizeof(u##n): \
-				state.regs[i].value = FRAME_REG(state.regs[i].value, \
-				                                const u##n); \
-				break
-			CASES;
-#undef CASE
-			default:
-				dprintk(1, "Unsupported register size %u (%lu).",
-				        reg_info[state.regs[i].value].width,
-				        state.regs[i].value);
-				return -EIO;
-			}
-			break;
-		}
-	}
-	for (i = 0; i < ARRAY_SIZE(state.regs); ++i) {
-		if (REG_INVALID(i))
-			continue;
-		switch(state.regs[i].where) {
-		case Nowhere:
-			if (reg_info[i].width != sizeof(UNW_SP(frame))
-			   || &FRAME_REG(i, __typeof__(UNW_SP(frame)))
-			      != &UNW_SP(frame))
-				continue;
-			UNW_SP(frame) = cfa;
-			break;
-		case Register:
-			switch(reg_info[i].width) {
-#define CASE(n) case sizeof(u##n): \
-				FRAME_REG(i, u##n) = state.regs[i].value; \
-				break
-			CASES;
-#undef CASE
-			default:
-				dprintk(1, "Unsupported register size %u (%u).",
-				        reg_info[i].width, i);
-				return -EIO;
-			}
-			break;
-		case Value:
-			if (reg_info[i].width != sizeof(unsigned long)) {
-				dprintk(1, "Unsupported value size %u (%u).",
-				        reg_info[i].width, i);
-				return -EIO;
-			}
-			FRAME_REG(i, unsigned long) = cfa + state.regs[i].value
-			                                    * state.dataAlign;
-			break;
-		case Memory: {
-				unsigned long addr = cfa + state.regs[i].value
-				                           * state.dataAlign;
-
-				if ((state.regs[i].value * state.dataAlign)
-				    % sizeof(unsigned long)
-				    || addr < startLoc
-				    || addr + sizeof(unsigned long) < addr
-				    || addr + sizeof(unsigned long) > endLoc) {
-					dprintk(1, "Bad memory location %lx (%lx).",
-					        addr, state.regs[i].value);
-					return -EIO;
-				}
-				switch(reg_info[i].width) {
-#define CASE(n)     case sizeof(u##n): \
-					probe_kernel_address((u##n *)addr, FRAME_REG(i, u##n)); \
-					break
-				CASES;
-#undef CASE
-				default:
-					dprintk(1, "Unsupported memory size %u (%u).",
-					        reg_info[i].width, i);
-					return -EIO;
-				}
-			}
-			break;
-		}
-	}
-
-	if (UNW_PC(frame) % state.codeAlign
-	    || UNW_SP(frame) % sleb128abs(state.dataAlign)) {
-		dprintk(1, "Output pointer(s) misaligned (%lx,%lx).",
-		        UNW_PC(frame), UNW_SP(frame));
-		return -EIO;
-	}
-	if (pc == UNW_PC(frame) && sp == UNW_SP(frame)) {
-		dprintk(1, "No progress (%lx,%lx).", pc, sp);
-		return -EIO;
-	}
-
-	return 0;
-#undef CASES
-#undef FRAME_REG
-}
-EXPORT_SYMBOL(unwind);
-
-int unwind_init_frame_info(struct unwind_frame_info *info,
-                           struct task_struct *tsk,
-                           /*const*/ struct pt_regs *regs)
-{
-	info->task = tsk;
-	info->call_frame = 0;
-	arch_unw_init_frame_info(info, regs);
-
-	return 0;
-}
-EXPORT_SYMBOL(unwind_init_frame_info);
-
-/*
- * Prepare to unwind a blocked task.
- */
-int unwind_init_blocked(struct unwind_frame_info *info,
-                        struct task_struct *tsk)
-{
-	info->task = tsk;
-	info->call_frame = 0;
-	arch_unw_init_blocked(info);
-
-	return 0;
-}
-EXPORT_SYMBOL(unwind_init_blocked);
-
-/*
- * Prepare to unwind the currently running thread.
- */
-int unwind_init_running(struct unwind_frame_info *info,
-                        asmlinkage int (*callback)(struct unwind_frame_info *,
-                                                   void *arg),
-                        void *arg)
-{
-	info->task = current;
-	info->call_frame = 0;
-
-	return arch_unwind_init_running(info, callback, arg);
-}
-EXPORT_SYMBOL(unwind_init_running);
-
-/*
- * Unwind until the return pointer is in user-land (or until an error
- * occurs).  Returns 0 if successful, negative number in case of
- * error.
- */
-int unwind_to_user(struct unwind_frame_info *info)
-{
-	while (!arch_unw_user_mode(info)) {
-		int err = unwind(info);
-
-		if (err < 0)
-			return err;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(unwind_to_user);
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index db49886..742cbbe 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -96,13 +96,13 @@
 	BUG_ON(!work_pending(work));
 
 	new = (unsigned long) wq | (1UL << WORK_STRUCT_PENDING);
-	new |= work->management & WORK_STRUCT_FLAG_MASK;
-	work->management = new;
+	new |= WORK_STRUCT_FLAG_MASK & *work_data_bits(work);
+	atomic_long_set(&work->data, new);
 }
 
 static inline void *get_wq_data(struct work_struct *work)
 {
-	return (void *) (work->management & WORK_STRUCT_WQ_DATA_MASK);
+	return (void *) (atomic_long_read(&work->data) & WORK_STRUCT_WQ_DATA_MASK);
 }
 
 static int __run_work(struct cpu_workqueue_struct *cwq, struct work_struct *work)
@@ -133,7 +133,7 @@
 		list_del_init(&work->entry);
 		spin_unlock_irqrestore(&cwq->lock, flags);
 
-		if (!test_bit(WORK_STRUCT_NOAUTOREL, &work->management))
+		if (!test_bit(WORK_STRUCT_NOAUTOREL, work_data_bits(work)))
 			work_release(work);
 		f(work);
 
@@ -206,7 +206,7 @@
 {
 	int ret = 0, cpu = get_cpu();
 
-	if (!test_and_set_bit(WORK_STRUCT_PENDING, &work->management)) {
+	if (!test_and_set_bit(WORK_STRUCT_PENDING, work_data_bits(work))) {
 		if (unlikely(is_single_threaded(wq)))
 			cpu = singlethread_cpu;
 		BUG_ON(!list_empty(&work->entry));
@@ -248,7 +248,7 @@
 	if (delay == 0)
 		return queue_work(wq, work);
 
-	if (!test_and_set_bit(WORK_STRUCT_PENDING, &work->management)) {
+	if (!test_and_set_bit(WORK_STRUCT_PENDING, work_data_bits(work))) {
 		BUG_ON(timer_pending(timer));
 		BUG_ON(!list_empty(&work->entry));
 
@@ -280,7 +280,7 @@
 	struct timer_list *timer = &dwork->timer;
 	struct work_struct *work = &dwork->work;
 
-	if (!test_and_set_bit(WORK_STRUCT_PENDING, &work->management)) {
+	if (!test_and_set_bit(WORK_STRUCT_PENDING, work_data_bits(work))) {
 		BUG_ON(timer_pending(timer));
 		BUG_ON(!list_empty(&work->entry));
 
@@ -321,7 +321,7 @@
 		spin_unlock_irqrestore(&cwq->lock, flags);
 
 		BUG_ON(get_wq_data(work) != cwq);
-		if (!test_bit(WORK_STRUCT_NOAUTOREL, &work->management))
+		if (!test_bit(WORK_STRUCT_NOAUTOREL, work_data_bits(work)))
 			work_release(work);
 		f(work);
 
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 818e458..5c268187 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -354,24 +354,6 @@
 	  some architectures or if you use external debuggers.
 	  If you don't debug the kernel, you can say N.
 
-config UNWIND_INFO
-	bool "Compile the kernel with frame unwind information"
-	depends on !IA64 && !PARISC && !ARM
-	depends on !MODULES || !(MIPS || PPC || SUPERH || V850)
-	help
-	  If you say Y here the resulting kernel image will be slightly larger
-	  but not slower, and it will give very useful debugging information.
-	  If you don't debug the kernel, you can say N, but we may not be able
-	  to solve problems without frame unwind information or frame pointers.
-
-config STACK_UNWIND
-	bool "Stack unwind support"
-	depends on UNWIND_INFO
-	depends on X86
-	help
-	  This enables more precise stack traces, omitting all unrelated
-	  occurrences of pointers into kernel code from the dump.
-
 config FORCED_INLINING
 	bool "Force gcc to inline functions marked 'inline'"
 	depends on DEBUG_KERNEL
diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index d143c0f..b5a90fc 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -55,37 +55,7 @@
 
 #define MAX_STACK_TRACE_DEPTH 32
 
-#ifdef CONFIG_STACK_UNWIND
-
-static asmlinkage int fail_stacktrace_callback(struct unwind_frame_info *info,
-						void *arg)
-{
-	int depth;
-	struct fault_attr *attr = arg;
-	bool found = (attr->require_start == 0 && attr->require_end == ULONG_MAX);
-
-	for (depth = 0; depth < attr->stacktrace_depth
-			&& unwind(info) == 0 && UNW_PC(info); depth++) {
-		if (arch_unw_user_mode(info))
-			break;
-		if (attr->reject_start <= UNW_PC(info) &&
-			       UNW_PC(info) < attr->reject_end)
-			return false;
-		if (attr->require_start <= UNW_PC(info) &&
-			       UNW_PC(info) < attr->require_end)
-			found = true;
-	}
-	return found;
-}
-
-static bool fail_stacktrace(struct fault_attr *attr)
-{
-	struct unwind_frame_info info;
-
-	return unwind_init_running(&info, fail_stacktrace_callback, attr);
-}
-
-#elif defined(CONFIG_STACKTRACE)
+#if defined(CONFIG_STACKTRACE)
 
 static bool fail_stacktrace(struct fault_attr *attr)
 {
diff --git a/mm/mincore.c b/mm/mincore.c
index 7289078..b44d7f8 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -1,7 +1,7 @@
 /*
  *	linux/mm/mincore.c
  *
- * Copyright (C) 1994-1999  Linus Torvalds
+ * Copyright (C) 1994-2006  Linus Torvalds
  */
 
 /*
@@ -38,46 +38,60 @@
 	return present;
 }
 
-static long mincore_vma(struct vm_area_struct * vma,
-	unsigned long start, unsigned long end, unsigned char __user * vec)
+/*
+ * Do a chunk of "sys_mincore()". We've already checked
+ * all the arguments, we hold the mmap semaphore: we should
+ * just return the amount of info we're asked for.
+ */
+static long do_mincore(unsigned long addr, unsigned char *vec, unsigned long pages)
 {
-	long error, i, remaining;
-	unsigned char * tmp;
+	unsigned long i, nr, pgoff;
+	struct vm_area_struct *vma = find_vma(current->mm, addr);
 
-	error = -ENOMEM;
-	if (!vma->vm_file)
-		return error;
-
-	start = ((start - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
-	if (end > vma->vm_end)
-		end = vma->vm_end;
-	end = ((end - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
-
-	error = -EAGAIN;
-	tmp = (unsigned char *) __get_free_page(GFP_KERNEL);
-	if (!tmp)
-		return error;
-
-	/* (end - start) is # of pages, and also # of bytes in "vec */
-	remaining = (end - start),
-
-	error = 0;
-	for (i = 0; remaining > 0; remaining -= PAGE_SIZE, i++) {
-		int j = 0;
-		long thispiece = (remaining < PAGE_SIZE) ?
-						remaining : PAGE_SIZE;
-
-		while (j < thispiece)
-			tmp[j++] = mincore_page(vma, start++);
-
-		if (copy_to_user(vec + PAGE_SIZE * i, tmp, thispiece)) {
-			error = -EFAULT;
-			break;
-		}
+	/*
+	 * find_vma() didn't find anything: the address
+	 * is above everything we have mapped.
+	 */
+	if (!vma) {
+		memset(vec, 0, pages);
+		return pages;
 	}
 
-	free_page((unsigned long) tmp);
-	return error;
+	/*
+	 * find_vma() found something, but we might be
+	 * below it: check for that.
+	 */
+	if (addr < vma->vm_start) {
+		unsigned long gap = (vma->vm_start - addr) >> PAGE_SHIFT;
+		if (gap > pages)
+			gap = pages;
+		memset(vec, 0, gap);
+		return gap;
+	}
+
+	/*
+	 * Ok, got it. But check whether it's a segment we support
+	 * mincore() on. Right now, we don't do any anonymous mappings.
+	 */
+	if (!vma->vm_file)
+		return -ENOMEM;
+
+	/*
+	 * Calculate how many pages there are left in the vma, and
+	 * what the pgoff is for our address.
+	 */
+	nr = (vma->vm_end - addr) >> PAGE_SHIFT;
+	if (nr > pages)
+		nr = pages;
+
+	pgoff = (addr - vma->vm_start) >> PAGE_SHIFT;
+	pgoff += vma->vm_pgoff;
+
+	/* And then we just fill the sucker in.. */
+	for (i = 0 ; i < nr; i++, pgoff++)
+		vec[i] = mincore_page(vma, pgoff);
+
+	return nr;
 }
 
 /*
@@ -107,82 +121,50 @@
 asmlinkage long sys_mincore(unsigned long start, size_t len,
 	unsigned char __user * vec)
 {
-	int index = 0;
-	unsigned long end, limit;
-	struct vm_area_struct * vma;
-	size_t max;
-	int unmapped_error = 0;
-	long error;
+	long retval;
+	unsigned long pages;
+	unsigned char *tmp;
 
-	/* check the arguments */
+	/* Check the start address: needs to be page-aligned.. */
  	if (start & ~PAGE_CACHE_MASK)
-		goto einval;
+		return -EINVAL;
 
-	limit = TASK_SIZE;
-	if (start >= limit)
-		goto enomem;
+	/* ..and we need to be passed a valid user-space range */
+	if (!access_ok(VERIFY_READ, (void __user *) start, len))
+		return -ENOMEM;
 
-	if (!len)
-		return 0;
+	/* This also avoids any overflows on PAGE_CACHE_ALIGN */
+	pages = len >> PAGE_SHIFT;
+	pages += (len & ~PAGE_MASK) != 0;
 
-	max = limit - start;
-	len = PAGE_CACHE_ALIGN(len);
-	if (len > max || !len)
-		goto enomem;
+	if (!access_ok(VERIFY_WRITE, vec, pages))
+		return -EFAULT;
 
-	end = start + len;
+	tmp = (void *) __get_free_page(GFP_USER);
+	if (!tmp)
+		return -ENOMEM;
 
-	/* check the output buffer whilst holding the lock */
-	error = -EFAULT;
-	down_read(&current->mm->mmap_sem);
+	retval = 0;
+	while (pages) {
+		/*
+		 * Do at most PAGE_SIZE entries per iteration, due to
+		 * the temporary buffer size.
+		 */
+		down_read(&current->mm->mmap_sem);
+		retval = do_mincore(start, tmp, max(pages, PAGE_SIZE));
+		up_read(&current->mm->mmap_sem);
 
-	if (!access_ok(VERIFY_WRITE, vec, len >> PAGE_SHIFT))
-		goto out;
-
-	/*
-	 * If the interval [start,end) covers some unmapped address
-	 * ranges, just ignore them, but return -ENOMEM at the end.
-	 */
-	error = 0;
-
-	vma = find_vma(current->mm, start);
-	while (vma) {
-		/* Here start < vma->vm_end. */
-		if (start < vma->vm_start) {
-			unmapped_error = -ENOMEM;
-			start = vma->vm_start;
+		if (retval <= 0)
+			break;
+		if (copy_to_user(vec, tmp, retval)) {
+			retval = -EFAULT;
+			break;
 		}
-
-		/* Here vma->vm_start <= start < vma->vm_end. */
-		if (end <= vma->vm_end) {
-			if (start < end) {
-				error = mincore_vma(vma, start, end,
-							&vec[index]);
-				if (error)
-					goto out;
-			}
-			error = unmapped_error;
-			goto out;
-		}
-
-		/* Here vma->vm_start <= start < vma->vm_end < end. */
-		error = mincore_vma(vma, start, vma->vm_end, &vec[index]);
-		if (error)
-			goto out;
-		index += (vma->vm_end - start) >> PAGE_CACHE_SHIFT;
-		start = vma->vm_end;
-		vma = vma->vm_next;
+		pages -= retval;
+		vec += retval;
+		start += retval << PAGE_SHIFT;
+		retval = 0;
 	}
-
-	/* we found a hole in the area queried if we arrive here */
-	error = -ENOMEM;
-
-out:
-	up_read(&current->mm->mmap_sem);
-	return error;
-
-einval:
-	return -EINVAL;
-enomem:
-	return -ENOMEM;
+	free_page((unsigned long) tmp);
+	return retval;
 }