Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 changes from Martin Schwidefsky:
 "No new functions, a few changes to make the code more robust, some
  cleanups and bug fixes."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (21 commits)
  s390/vtimer: rework virtual timer interface
  s390/dis: Add the servc instruction to the disassembler.
  s390/comments: unify copyright messages and remove file names
  s390/lgr: Add init check to lgr_info_log()
  s390/cpu init: use __get_cpu_var instead of per_cpu
  s390/idle: reduce size of s390_idle_data structure
  s390/idle: fix sequence handling vs cpu hotplug
  s390/ap: resend enable adapter interrupt request.
  s390/hypfs: Add missing get_next_ino()
  s390/dasd: add shutdown action
  s390/ipl: Fix ipib handling for "dumpreipl" shutdown action
  s390/smp: make absolute lowcore / cpu restart parameter accesses more robust
  s390/vmlogrdr: cleanup driver attribute usage
  s390/vmlogrdr: cleanup device attribute usage
  s390/ccwgroup: remove unused ccwgroup_device member
  s390/cio/chp: cleanup attribute usage
  s390/sigp: use sigp order code defines in assembly code
  s390/smp: use sigp cpu status definitions
  s390/smp/kvm: unifiy sigp definitions
  s390/smp: remove redundant check
  ...

48 files changed, 302 insertions, 497 deletions

diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index 83e6edf5cf17..45ef1a7b08f9 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -9,7 +9,6 @@
 #include <linux/kbuild.h>
 #include <linux/sched.h>
 #include <asm/cputime.h>
-#include <asm/timer.h>
 #include <asm/vdso.h>
 #include <asm/pgtable.h>
 
@@ -72,11 +71,10 @@ int main(void)
 	DEFINE(__CLOCK_REALTIME_RES, MONOTONIC_RES_NSEC);
 	BLANK();
 	/* idle data offsets */
-	DEFINE(__IDLE_ENTER, offsetof(struct s390_idle_data, idle_enter));
-	DEFINE(__IDLE_EXIT, offsetof(struct s390_idle_data, idle_exit));
-	/* vtimer queue offsets */
-	DEFINE(__VQ_IDLE_ENTER, offsetof(struct vtimer_queue, idle_enter));
-	DEFINE(__VQ_IDLE_EXIT, offsetof(struct vtimer_queue, idle_exit));
+	DEFINE(__CLOCK_IDLE_ENTER, offsetof(struct s390_idle_data, clock_idle_enter));
+	DEFINE(__CLOCK_IDLE_EXIT, offsetof(struct s390_idle_data, clock_idle_exit));
+	DEFINE(__TIMER_IDLE_ENTER, offsetof(struct s390_idle_data, timer_idle_enter));
+	DEFINE(__TIMER_IDLE_EXIT, offsetof(struct s390_idle_data, timer_idle_exit));
 	/* lowcore offsets */
 	DEFINE(__LC_EXT_PARAMS, offsetof(struct _lowcore, ext_params));
 	DEFINE(__LC_EXT_CPU_ADDR, offsetof(struct _lowcore, ext_cpu_addr));
@@ -131,6 +129,8 @@ int main(void)
 	DEFINE(__LC_PANIC_STACK, offsetof(struct _lowcore, panic_stack));
 	DEFINE(__LC_RESTART_STACK, offsetof(struct _lowcore, restart_stack));
 	DEFINE(__LC_RESTART_FN, offsetof(struct _lowcore, restart_fn));
+	DEFINE(__LC_RESTART_DATA, offsetof(struct _lowcore, restart_data));
+	DEFINE(__LC_RESTART_SOURCE, offsetof(struct _lowcore, restart_source));
 	DEFINE(__LC_USER_ASCE, offsetof(struct _lowcore, user_asce));
 	DEFINE(__LC_INT_CLOCK, offsetof(struct _lowcore, int_clock));
 	DEFINE(__LC_MCCK_CLOCK, offsetof(struct _lowcore, mcck_clock));
diff --git a/arch/s390/kernel/base.S b/arch/s390/kernel/base.S
index c880ff72db44..797a823a2275 100644
--- a/arch/s390/kernel/base.S
+++ b/arch/s390/kernel/base.S
@@ -1,7 +1,7 @@
 /*
  *  arch/s390/kernel/base.S
  *
- *    Copyright IBM Corp. 2006,2007
+ *    Copyright IBM Corp. 2006, 2007
  *    Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
  *		 Michael Holzheu <holzheu@de.ibm.com>
  */
@@ -9,6 +9,7 @@
 #include <linux/linkage.h>
 #include <asm/asm-offsets.h>
 #include <asm/ptrace.h>
+#include <asm/sigp.h>
 
 #ifdef CONFIG_64BIT
 
@@ -100,7 +101,7 @@ ENTRY(diag308_reset)
 .Lrestart_part2:
 	lhi	%r0,0			# Load r0 with zero
 	lhi	%r1,2			# Use mode 2 = ESAME (dump)
-	sigp	%r1,%r0,0x12		# Switch to ESAME mode
+	sigp	%r1,%r0,SIGP_SET_ARCHITECTURE	# Switch to ESAME mode
 	sam64				# Switch to 64 bit addressing mode
 	larl	%r4,.Lctlregs		# Restore control registers
 	lctlg	%c0,%c15,0(%r4)
diff --git a/arch/s390/kernel/bitmap.c b/arch/s390/kernel/bitmap.c
index 3ae4757b006a..102da5e23037 100644
--- a/arch/s390/kernel/bitmap.c
+++ b/arch/s390/kernel/bitmap.c
@@ -2,7 +2,7 @@
  *    Bitmaps for set_bit, clear_bit, test_and_set_bit, ...
  *    See include/asm/{bitops.h|posix_types.h} for details
  *
- *    Copyright IBM Corp. 1999,2009
+ *    Copyright IBM Corp. 1999, 2009
  *    Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
  */
 
diff --git a/arch/s390/kernel/compat_exec_domain.c b/arch/s390/kernel/compat_exec_domain.c
index 914d49444f92..765fabdada9f 100644
--- a/arch/s390/kernel/compat_exec_domain.c
+++ b/arch/s390/kernel/compat_exec_domain.c
@@ -1,7 +1,7 @@
 /*
  * Support for 32-bit Linux for S390 personality.
  *
- * Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Copyright IBM Corp. 2000
  * Author(s): Gerhard Tonn (ton@de.ibm.com)
  *
  *
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 65426525d9f2..d1225089a4bb 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -1,8 +1,6 @@
 /*
- *  arch/s390x/kernel/linux32.c
- *
  *  S390 version
- *    Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Copyright IBM Corp. 2000
  *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
  *               Gerhard Tonn (ton@de.ibm.com)   
  *               Thomas Spatzier (tspat@de.ibm.com)
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index 3c0c19830c37..a1e8a8694bb7 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -1,7 +1,5 @@
 /*
- *  arch/s390/kernel/compat_signal.c
- *
- *    Copyright (C) IBM Corp. 2000,2006
+ *    Copyright IBM Corp. 2000, 2006
  *    Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
  *               Gerhard Tonn (ton@de.ibm.com)                  
  *
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index ff605a39cf43..e835d6d5b7fd 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1,8 +1,7 @@
 /*
-*  arch/s390/kernel/compat_wrapper.S
 *    wrapper for 31 bit compatible system calls.
 *
-*    Copyright (C) IBM Corp. 2000,2006
+*    Copyright IBM Corp. 2000, 2006
 *    Author(s): Gerhard Tonn (ton@de.ibm.com),
 *		Thomas Spatzier (tspat@de.ibm.com)
 */
diff --git a/arch/s390/kernel/cpcmd.c b/arch/s390/kernel/cpcmd.c
index e3dd886e1b32..d7b0c4d27880 100644
--- a/arch/s390/kernel/cpcmd.c
+++ b/arch/s390/kernel/cpcmd.c
@@ -1,8 +1,6 @@
 /*
- *  arch/s390/kernel/cpcmd.c
- *
  *  S390 version
- *    Copyright IBM Corp. 1999,2007
+ *    Copyright IBM Corp. 1999, 2007
  *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
  *               Christian Borntraeger (cborntra@de.ibm.com),
  */
diff --git a/arch/s390/kernel/crash.c b/arch/s390/kernel/crash.c
index 8cc7c9fa64f5..3819153de8bd 100644
--- a/arch/s390/kernel/crash.c
+++ b/arch/s390/kernel/crash.c
@@ -1,7 +1,5 @@
 /*
- * arch/s390/kernel/crash.c
- *
- * (C) Copyright IBM Corp. 2005
+ * Copyright IBM Corp. 2005
  *
  * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
  *
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index 19e5e9eba546..21be961e8a43 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -1,5 +1,4 @@
 /*
- *  arch/s390/kernel/debug.c
  *   S/390 debug facility
  *
  *    Copyright IBM Corp. 1999, 2012
diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
index 3221c6fca8bb..1f6b428e2762 100644
--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -1,6 +1,4 @@
 /*
- * arch/s390/kernel/dis.c
- *
  * Disassemble s390 instructions.
  *
  * Copyright IBM Corp. 2007
@@ -613,6 +611,7 @@ static struct insn opcode_b2[] = {
 	{ "sie", 0x14, INSTR_S_RD },
 	{ "pc", 0x18, INSTR_S_RD },
 	{ "sac", 0x19, INSTR_S_RD },
+	{ "servc", 0x20, INSTR_RRE_RR },
 	{ "cfc", 0x1a, INSTR_S_RD },
 	{ "ipte", 0x21, INSTR_RRE_RR },
 	{ "ipm", 0x22, INSTR_RRE_R0 },
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 6684fff17558..bc95a8ebd9cc 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -1,6 +1,4 @@
 /*
- *  arch/s390/kernel/early.c
- *
  *    Copyright IBM Corp. 2007, 2009
  *    Author(s): Hongjie Yang <hongjie@us.ibm.com>,
  *		 Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/arch/s390/kernel/ebcdic.c b/arch/s390/kernel/ebcdic.c
index cc0dc609d738..b971c6be6298 100644
--- a/arch/s390/kernel/ebcdic.c
+++ b/arch/s390/kernel/ebcdic.c
@@ -1,10 +1,9 @@
 /*
- *  arch/s390/kernel/ebcdic.c
  *    ECBDIC -> ASCII, ASCII -> ECBDIC,
  *    upper to lower case (EBCDIC) conversion tables.
  *
  *  S390 version
- *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Copyright IBM Corp. 1999
  *    Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
  *               Martin Peschke <peschke@fh-brandenburg.de>
  */
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 1ae93b573d7d..870bad6d56fc 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -1,8 +1,7 @@
 /*
- *  arch/s390/kernel/entry.S
  *    S390 low-level entry points.
  *
- *    Copyright (C) IBM Corp. 1999,2012
+ *    Copyright IBM Corp. 1999, 2012
  *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
  *		 Hartmut Penner (hp@de.ibm.com),
  *		 Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
@@ -18,6 +17,7 @@
 #include <asm/asm-offsets.h>
 #include <asm/unistd.h>
 #include <asm/page.h>
+#include <asm/sigp.h>
 
 __PT_R0      =	__PT_GPRS
 __PT_R1      =	__PT_GPRS + 4
@@ -616,17 +616,13 @@ ext_skip:
  * Load idle PSW. The second "half" of this function is in cleanup_idle.
  */
 ENTRY(psw_idle)
-	st	%r4,__SF_EMPTY(%r15)
+	st	%r3,__SF_EMPTY(%r15)
 	basr	%r1,0
 	la	%r1,psw_idle_lpsw+4-.(%r1)
 	st	%r1,__SF_EMPTY+4(%r15)
 	oi	__SF_EMPTY+4(%r15),0x80
-	la	%r1,.Lvtimer_max-psw_idle_lpsw-4(%r1)
-	stck	__IDLE_ENTER(%r2)
-	ltr	%r5,%r5
-	stpt	__VQ_IDLE_ENTER(%r3)
-	jz	psw_idle_lpsw
-	spt	0(%r1)
+	stck	__CLOCK_IDLE_ENTER(%r2)
+	stpt	__TIMER_IDLE_ENTER(%r2)
 psw_idle_lpsw:
 	lpsw	__SF_EMPTY(%r15)
 	br	%r14
@@ -723,15 +719,17 @@ ENTRY(restart_int_handler)
 	mvc	__PT_PSW(8,%r15),__LC_RST_OLD_PSW # store restart old psw
 	ahi	%r15,-STACK_FRAME_OVERHEAD	# create stack frame on stack
 	xc	0(STACK_FRAME_OVERHEAD,%r15),0(%r15)
-	lm	%r1,%r3,__LC_RESTART_FN		# load fn, parm & source cpu
+	l	%r1,__LC_RESTART_FN		# load fn, parm & source cpu
+	l	%r2,__LC_RESTART_DATA
+	l	%r3,__LC_RESTART_SOURCE
 	ltr	%r3,%r3				# test source cpu address
 	jm	1f				# negative -> skip source stop
-0:	sigp	%r4,%r3,1			# sigp sense to source cpu
+0:	sigp	%r4,%r3,SIGP_SENSE		# sigp sense to source cpu
 	brc	10,0b				# wait for status stored
 1:	basr	%r14,%r1			# call function
 	stap	__SF_EMPTY(%r15)		# store cpu address
 	lh	%r3,__SF_EMPTY(%r15)
-2:	sigp	%r4,%r3,5			# sigp stop to current cpu
+2:	sigp	%r4,%r3,SIGP_STOP		# sigp stop to current cpu
 	brc	2,2b
 3:	j	3b
 
@@ -883,33 +881,28 @@ cleanup_io_restore_insn:
 
 cleanup_idle:
 	# copy interrupt clock & cpu timer
-	mvc	__IDLE_EXIT(8,%r2),__LC_INT_CLOCK
-	mvc	__VQ_IDLE_EXIT(8,%r3),__LC_ASYNC_ENTER_TIMER
+	mvc	__CLOCK_IDLE_EXIT(8,%r2),__LC_INT_CLOCK
+	mvc	__TIMER_IDLE_EXIT(8,%r2),__LC_ASYNC_ENTER_TIMER
 	chi	%r11,__LC_SAVE_AREA_ASYNC
 	je	0f
-	mvc	__IDLE_EXIT(8,%r2),__LC_MCCK_CLOCK
-	mvc	__VQ_IDLE_EXIT(8,%r3),__LC_MCCK_ENTER_TIMER
+	mvc	__CLOCK_IDLE_EXIT(8,%r2),__LC_MCCK_CLOCK
+	mvc	__TIMER_IDLE_EXIT(8,%r2),__LC_MCCK_ENTER_TIMER
 0:	# check if stck has been executed
 	cl	%r9,BASED(cleanup_idle_insn)
 	jhe	1f
-	mvc	__IDLE_ENTER(8,%r2),__IDLE_EXIT(%r2)
-	mvc	__VQ_IDLE_ENTER(8,%r3),__VQ_IDLE_EXIT(%r3)
-	j	2f
-1:	# check if the cpu timer has been reprogrammed
-	ltr	%r5,%r5
-	jz	2f
-	spt	__VQ_IDLE_ENTER(%r3)
-2:	# account system time going idle
+	mvc	__CLOCK_IDLE_ENTER(8,%r2),__CLOCK_IDLE_EXIT(%r2)
+	mvc	__TIMER_IDLE_ENTER(8,%r2),__TIMER_IDLE_EXIT(%r3)
+1:	# account system time going idle
 	lm	%r9,%r10,__LC_STEAL_TIMER
-	ADD64	%r9,%r10,__IDLE_ENTER(%r2)
+	ADD64	%r9,%r10,__CLOCK_IDLE_ENTER(%r2)
 	SUB64	%r9,%r10,__LC_LAST_UPDATE_CLOCK
 	stm	%r9,%r10,__LC_STEAL_TIMER
-	mvc	__LC_LAST_UPDATE_CLOCK(8),__IDLE_EXIT(%r2)
+	mvc	__LC_LAST_UPDATE_CLOCK(8),__CLOCK_IDLE_EXIT(%r2)
 	lm	%r9,%r10,__LC_SYSTEM_TIMER
 	ADD64	%r9,%r10,__LC_LAST_UPDATE_TIMER
-	SUB64	%r9,%r10,__VQ_IDLE_ENTER(%r3)
+	SUB64	%r9,%r10,__TIMER_IDLE_ENTER(%r2)
 	stm	%r9,%r10,__LC_SYSTEM_TIMER
-	mvc	__LC_LAST_UPDATE_TIMER(8),__VQ_IDLE_EXIT(%r3)
+	mvc	__LC_LAST_UPDATE_TIMER(8),__TIMER_IDLE_EXIT(%r2)
 	# prepare return psw
 	n	%r8,BASED(cleanup_idle_wait)	# clear wait state bit
 	l	%r9,24(%r11)			# return from psw_idle
diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h
index f66a229ab0b3..a5f4dc42a5db 100644
--- a/arch/s390/kernel/entry.h
+++ b/arch/s390/kernel/entry.h
@@ -5,7 +5,6 @@
 #include <linux/signal.h>
 #include <asm/ptrace.h>
 #include <asm/cputime.h>
-#include <asm/timer.h>
 
 extern void (*pgm_check_table[128])(struct pt_regs *);
 extern void *restart_stack;
@@ -17,8 +16,7 @@ void io_int_handler(void);
 void mcck_int_handler(void);
 void restart_int_handler(void);
 void restart_call_handler(void);
-void psw_idle(struct s390_idle_data *, struct vtimer_queue *,
-	      unsigned long, int);
+void psw_idle(struct s390_idle_data *, unsigned long);
 
 asmlinkage long do_syscall_trace_enter(struct pt_regs *regs);
 asmlinkage void do_syscall_trace_exit(struct pt_regs *regs);
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 229fe1d07749..349b7eeb348a 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -1,8 +1,7 @@
 /*
- *  arch/s390/kernel/entry64.S
  *    S390 low-level entry points.
  *
- *    Copyright (C) IBM Corp. 1999,2012
+ *    Copyright IBM Corp. 1999, 2012
  *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
  *		 Hartmut Penner (hp@de.ibm.com),
  *		 Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
@@ -18,6 +17,7 @@
 #include <asm/asm-offsets.h>
 #include <asm/unistd.h>
 #include <asm/page.h>
+#include <asm/sigp.h>
 
 __PT_R0      =	__PT_GPRS
 __PT_R1      =	__PT_GPRS + 8
@@ -642,15 +642,11 @@ ext_skip:
  * Load idle PSW. The second "half" of this function is in cleanup_idle.
  */
 ENTRY(psw_idle)
-	stg	%r4,__SF_EMPTY(%r15)
+	stg	%r3,__SF_EMPTY(%r15)
 	larl	%r1,psw_idle_lpsw+4
 	stg	%r1,__SF_EMPTY+8(%r15)
-	larl	%r1,.Lvtimer_max
-	STCK	__IDLE_ENTER(%r2)
-	ltr	%r5,%r5
-	stpt	__VQ_IDLE_ENTER(%r3)
-	jz	psw_idle_lpsw
-	spt	0(%r1)
+	STCK	__CLOCK_IDLE_ENTER(%r2)
+	stpt	__TIMER_IDLE_ENTER(%r2)
 psw_idle_lpsw:
 	lpswe	__SF_EMPTY(%r15)
 	br	%r14
@@ -750,15 +746,17 @@ ENTRY(restart_int_handler)
 	mvc	__PT_PSW(16,%r15),__LC_RST_OLD_PSW # store restart old psw
 	aghi	%r15,-STACK_FRAME_OVERHEAD	# create stack frame on stack
 	xc	0(STACK_FRAME_OVERHEAD,%r15),0(%r15)
-	lmg	%r1,%r3,__LC_RESTART_FN		# load fn, parm & source cpu
+	lg	%r1,__LC_RESTART_FN		# load fn, parm & source cpu
+	lg	%r2,__LC_RESTART_DATA
+	lg	%r3,__LC_RESTART_SOURCE
 	ltgr	%r3,%r3				# test source cpu address
 	jm	1f				# negative -> skip source stop
-0:	sigp	%r4,%r3,1			# sigp sense to source cpu
+0:	sigp	%r4,%r3,SIGP_SENSE		# sigp sense to source cpu
 	brc	10,0b				# wait for status stored
 1:	basr	%r14,%r1			# call function
 	stap	__SF_EMPTY(%r15)		# store cpu address
 	llgh	%r3,__SF_EMPTY(%r15)
-2:	sigp	%r4,%r3,5			# sigp stop to current cpu
+2:	sigp	%r4,%r3,SIGP_STOP		# sigp stop to current cpu
 	brc	2,2b
 3:	j	3b
 
@@ -916,33 +914,28 @@ cleanup_io_restore_insn:
 
 cleanup_idle:
 	# copy interrupt clock & cpu timer
-	mvc	__IDLE_EXIT(8,%r2),__LC_INT_CLOCK
-	mvc	__VQ_IDLE_EXIT(8,%r3),__LC_ASYNC_ENTER_TIMER
+	mvc	__CLOCK_IDLE_EXIT(8,%r2),__LC_INT_CLOCK
+	mvc	__TIMER_IDLE_EXIT(8,%r2),__LC_ASYNC_ENTER_TIMER
 	cghi	%r11,__LC_SAVE_AREA_ASYNC
 	je	0f
-	mvc	__IDLE_EXIT(8,%r2),__LC_MCCK_CLOCK
-	mvc	__VQ_IDLE_EXIT(8,%r3),__LC_MCCK_ENTER_TIMER
+	mvc	__CLOCK_IDLE_EXIT(8,%r2),__LC_MCCK_CLOCK
+	mvc	__TIMER_IDLE_EXIT(8,%r2),__LC_MCCK_ENTER_TIMER
 0:	# check if stck & stpt have been executed
 	clg	%r9,BASED(cleanup_idle_insn)
 	jhe	1f
-	mvc	__IDLE_ENTER(8,%r2),__IDLE_EXIT(%r2)
-	mvc	__VQ_IDLE_ENTER(8,%r3),__VQ_IDLE_EXIT(%r3)
-	j	2f
-1:	# check if the cpu timer has been reprogrammed
-	ltr	%r5,%r5
-	jz	2f
-	spt	__VQ_IDLE_ENTER(%r3)
-2:	# account system time going idle
+	mvc	__CLOCK_IDLE_ENTER(8,%r2),__CLOCK_IDLE_EXIT(%r2)
+	mvc	__TIMER_IDLE_ENTER(8,%r2),__TIMER_IDLE_EXIT(%r2)
+1:	# account system time going idle
 	lg	%r9,__LC_STEAL_TIMER
-	alg	%r9,__IDLE_ENTER(%r2)
+	alg	%r9,__CLOCK_IDLE_ENTER(%r2)
 	slg	%r9,__LC_LAST_UPDATE_CLOCK
 	stg	%r9,__LC_STEAL_TIMER
-	mvc	__LC_LAST_UPDATE_CLOCK(8),__IDLE_EXIT(%r2)
+	mvc	__LC_LAST_UPDATE_CLOCK(8),__CLOCK_IDLE_EXIT(%r2)
 	lg	%r9,__LC_SYSTEM_TIMER
 	alg	%r9,__LC_LAST_UPDATE_TIMER
-	slg	%r9,__VQ_IDLE_ENTER(%r3)
+	slg	%r9,__TIMER_IDLE_ENTER(%r2)
 	stg	%r9,__LC_SYSTEM_TIMER
-	mvc	__LC_LAST_UPDATE_TIMER(8),__VQ_IDLE_EXIT(%r3)
+	mvc	__LC_LAST_UPDATE_TIMER(8),__TIMER_IDLE_EXIT(%r2)
 	# prepare return psw
 	nihh	%r8,0xfffd		# clear wait state bit
 	lg	%r9,48(%r11)		# return from psw_idle
@@ -958,8 +951,6 @@ cleanup_idle_insn:
 	.quad	__critical_start
 .Lcritical_length:
 	.quad	__critical_end - __critical_start
-.Lvtimer_max:
-	.quad	0x7fffffffffffffff
 
 
 #if defined(CONFIG_KVM) || defined(CONFIG_KVM_MODULE)
@@ -974,7 +965,6 @@ ENTRY(sie64a)
 	stg	%r3,__SF_EMPTY+8(%r15)		# save guest register save area
 	xc	__SF_EMPTY+16(8,%r15),__SF_EMPTY+16(%r15) # host id == 0
 	lmg	%r0,%r13,0(%r3)			# load guest gprs 0-13
-	lg	%r14,__LC_THREAD_INFO		# pointer thread_info struct
 sie_loop:
 	lg	%r14,__LC_THREAD_INFO		# pointer thread_info struct
 	tm	__TI_flags+7(%r14),_TIF_EXIT_SIE
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index 4939d15375aa..805b6686b641 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -1,5 +1,5 @@
 /*
- * Copyright IBM Corp. 1999,2010
+ * Copyright IBM Corp. 1999, 2010
  *
  *    Author(s): Hartmut Penner <hp@de.ibm.com>
  *		 Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
index d3f1ab7d90ad..a1372ae24ae1 100644
--- a/arch/s390/kernel/head31.S
+++ b/arch/s390/kernel/head31.S
@@ -1,7 +1,5 @@
 /*
- * arch/s390/kernel/head31.S
- *
- * Copyright (C) IBM Corp. 2005,2010
+ * Copyright IBM Corp. 2005, 2010
  *
  *   Author(s):	Hartmut Penner <hp@de.ibm.com>
  *		Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index 99348c0eaa41..c108af28bbe8 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -1,7 +1,5 @@
 /*
- * arch/s390/kernel/head64.S
- *
- * Copyright (C) IBM Corp. 1999,2010
+ * Copyright IBM Corp. 1999, 2010
  *
  *   Author(s):	Hartmut Penner <hp@de.ibm.com>
  *		Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/head_kdump.S b/arch/s390/kernel/head_kdump.S
index 796c976b5fdc..acaaaf4b7055 100644
--- a/arch/s390/kernel/head_kdump.S
+++ b/arch/s390/kernel/head_kdump.S
@@ -5,6 +5,8 @@
  * Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com>
  */
 
+#include <asm/sigp.h>
+
 #define DATAMOVER_ADDR	0x4000
 #define COPY_PAGE_ADDR	0x6000
 
@@ -19,7 +21,7 @@
 .align 2
 .Lep_startup_kdump:
 	lhi	%r1,2				# mode 2 = esame (dump)
-	sigp	%r1,%r0,0x12			# Switch to esame mode
+	sigp	%r1,%r0,SIGP_SET_ARCHITECTURE	# Switch to esame mode
 	sam64					# Switch to 64 bit addressing
 	basr	%r13,0
 .Lbase:
@@ -88,7 +90,7 @@ startup_kdump_relocated:
 	sam31					# Switch to 31 bit addr mode
 	sr	%r1,%r1				# Erase register r1
 	sr	%r2,%r2				# Erase register r2
-	sigp	%r1,%r2,0x12			# Switch to 31 bit arch mode
+	sigp	%r1,%r2,SIGP_SET_ARCHITECTURE	# Switch to 31 bit arch mode
 	lpsw	0				# Start new kernel...
 .align	8
 .Lrestart_psw:
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 2f6cfd460cb6..e64d141555ce 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -1,8 +1,7 @@
 /*
- *  arch/s390/kernel/ipl.c
  *    ipl/reipl/dump support for Linux on s390.
  *
- *    Copyright IBM Corp. 2005,2012
+ *    Copyright IBM Corp. 2005, 2012
  *    Author(s): Michael Holzheu <holzheu@de.ibm.com>
  *		 Heiko Carstens <heiko.carstens@de.ibm.com>
  *		 Volker Sameske <sameske@de.ibm.com>
@@ -1528,15 +1527,12 @@ static struct shutdown_action __refdata dump_action = {
 
 static void dump_reipl_run(struct shutdown_trigger *trigger)
 {
-	struct {
-		void	*addr;
-		__u32	csum;
-	} __packed ipib;
+	unsigned long ipib = (unsigned long) reipl_block_actual;
+	unsigned int csum;
 
-	ipib.csum = csum_partial(reipl_block_actual,
-				 reipl_block_actual->hdr.len, 0);
-	ipib.addr = reipl_block_actual;
-	memcpy_absolute(&S390_lowcore.ipib, &ipib, sizeof(ipib));
+	csum = csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0);
+	mem_assign_absolute(S390_lowcore.ipib, ipib);
+	mem_assign_absolute(S390_lowcore.ipib_checksum, csum);
 	dump_run(trigger);
 }
 
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index b4f4a7133fa1..dd7630d8aab7 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -1,5 +1,5 @@
 /*
- *    Copyright IBM Corp. 2004,2011
+ *    Copyright IBM Corp. 2004, 2011
  *    Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
  *		 Holger Smolinski <Holger.Smolinski@de.ibm.com>,
  *		 Thomas Spatzier <tspat@de.ibm.com>,
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index 64b761aef004..8aa634f5944b 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -15,7 +15,7 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  *
- * Copyright (C) IBM Corporation, 2002, 2006
+ * Copyright IBM Corp. 2002, 2006
  *
  * s390 port, used ppc64 as template. Mike Grundy <grundym@us.ibm.com>
  */
diff --git a/arch/s390/kernel/lgr.c b/arch/s390/kernel/lgr.c
index 87f080b17af1..eca94e74d19a 100644
--- a/arch/s390/kernel/lgr.c
+++ b/arch/s390/kernel/lgr.c
@@ -45,7 +45,7 @@ struct lgr_info {
 /*
  * LGR globals
  */
-static void *lgr_page;
+static char lgr_page[PAGE_SIZE] __aligned(PAGE_SIZE);
 static struct lgr_info lgr_info_last;
 static struct lgr_info lgr_info_cur;
 static struct debug_info *lgr_dbf;
@@ -74,7 +74,7 @@ static void cpascii(char *dst, char *src, int size)
  */
 static void lgr_stsi_1_1_1(struct lgr_info *lgr_info)
 {
-	struct sysinfo_1_1_1 *si = lgr_page;
+	struct sysinfo_1_1_1 *si = (void *) lgr_page;
 
 	if (stsi(si, 1, 1, 1) == -ENOSYS)
 		return;
@@ -91,7 +91,7 @@ static void lgr_stsi_1_1_1(struct lgr_info *lgr_info)
  */
 static void lgr_stsi_2_2_2(struct lgr_info *lgr_info)
 {
-	struct sysinfo_2_2_2 *si = lgr_page;
+	struct sysinfo_2_2_2 *si = (void *) lgr_page;
 
 	if (stsi(si, 2, 2, 2) == -ENOSYS)
 		return;
@@ -105,7 +105,7 @@ static void lgr_stsi_2_2_2(struct lgr_info *lgr_info)
  */
 static void lgr_stsi_3_2_2(struct lgr_info *lgr_info)
 {
-	struct sysinfo_3_2_2 *si = lgr_page;
+	struct sysinfo_3_2_2 *si = (void *) lgr_page;
 	int i;
 
 	if (stsi(si, 3, 2, 2) == -ENOSYS)
@@ -183,14 +183,9 @@ static void lgr_timer_set(void)
  */
 static int __init lgr_init(void)
 {
-	lgr_page = (void *) __get_free_pages(GFP_KERNEL, 0);
-	if (!lgr_page)
-		return -ENOMEM;
 	lgr_dbf = debug_register("lgr", 1, 1, sizeof(struct lgr_info));
-	if (!lgr_dbf) {
-		free_page((unsigned long) lgr_page);
+	if (!lgr_dbf)
 		return -ENOMEM;
-	}
 	debug_register_view(lgr_dbf, &debug_hex_ascii_view);
 	lgr_info_get(&lgr_info_last);
 	debug_event(lgr_dbf, 1, &lgr_info_last, sizeof(lgr_info_last));
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index cdacf8f91b2d..493304bdf1c7 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -1,7 +1,5 @@
 /*
- * arch/s390/kernel/machine_kexec.c
- *
- * Copyright IBM Corp. 2005,2011
+ * Copyright IBM Corp. 2005, 2011
  *
  * Author(s): Rolf Adelsberger,
  *	      Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/arch/s390/kernel/mcount.S b/arch/s390/kernel/mcount.S
index 7e2c38ba1373..4567ce20d900 100644
--- a/arch/s390/kernel/mcount.S
+++ b/arch/s390/kernel/mcount.S
@@ -1,5 +1,5 @@
 /*
- * Copyright IBM Corp. 2008,2009
+ * Copyright IBM Corp. 2008, 2009
  *
  *   Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
  *
diff --git a/arch/s390/kernel/mcount64.S b/arch/s390/kernel/mcount64.S
index f70cadec68fc..11332193db30 100644
--- a/arch/s390/kernel/mcount64.S
+++ b/arch/s390/kernel/mcount64.S
@@ -1,5 +1,5 @@
 /*
- * Copyright IBM Corp. 2008,2009
+ * Copyright IBM Corp. 2008, 2009
  *
  *   Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
  *
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index dfcb3436bad0..46412b1d7e1e 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -1,9 +1,8 @@
 /*
- *  arch/s390/kernel/module.c - Kernel module help for s390.
+ *  Kernel module help for s390.
  *
  *  S390 version
- *    Copyright (C) 2002, 2003 IBM Deutschland Entwicklung GmbH,
- *			       IBM Corporation
+ *    Copyright IBM Corp. 2002, 2003
  *    Author(s): Arnd Bergmann (arndb@de.ibm.com)
  *		 Martin Schwidefsky (schwidefsky@de.ibm.com)
  *
diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c
index 8c372ca61350..a6daa5c5cdb0 100644
--- a/arch/s390/kernel/nmi.c
+++ b/arch/s390/kernel/nmi.c
@@ -1,7 +1,7 @@
 /*
  *   Machine check handler
  *
- *    Copyright IBM Corp. 2000,2009
+ *    Copyright IBM Corp. 2000, 2009
  *    Author(s): Ingo Adlung <adlung@de.ibm.com>,
  *		 Martin Schwidefsky <schwidefsky@de.ibm.com>,
  *		 Cornelia Huck <cornelia.huck@de.ibm.com>,
diff --git a/arch/s390/kernel/os_info.c b/arch/s390/kernel/os_info.c
index 95fa5ac6c4ce..46480d81df00 100644
--- a/arch/s390/kernel/os_info.c
+++ b/arch/s390/kernel/os_info.c
@@ -60,7 +60,7 @@ void __init os_info_init(void)
 	os_info.version_minor = OS_INFO_VERSION_MINOR;
 	os_info.magic = OS_INFO_MAGIC;
 	os_info.csum = os_info_csum(&os_info);
-	memcpy_absolute(&S390_lowcore.os_info, &ptr, sizeof(ptr));
+	mem_assign_absolute(S390_lowcore.os_info, (unsigned long) ptr);
 }
 
 #ifdef CONFIG_CRASH_DUMP
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 60055cefdd04..733175373a4c 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -1,7 +1,7 @@
 /*
  * This file handles the architecture dependent parts of process handling.
  *
- *    Copyright IBM Corp. 1999,2009
+ *    Copyright IBM Corp. 1999, 2009
  *    Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
  *		 Hartmut Penner <hp@de.ibm.com>,
  *		 Denis Joseph Barrow,
@@ -25,8 +25,8 @@
 #include <linux/module.h>
 #include <asm/io.h>
 #include <asm/processor.h>
+#include <asm/vtimer.h>
 #include <asm/irq.h>
-#include <asm/timer.h>
 #include <asm/nmi.h>
 #include <asm/smp.h>
 #include <asm/switch_to.h>
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 6e0073e43f54..572d4c9cb33b 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -1,6 +1,4 @@
 /*
- *  arch/s390/kernel/processor.c
- *
  *  Copyright IBM Corp. 2008
  *  Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
  */
@@ -25,13 +23,15 @@ static DEFINE_PER_CPU(struct cpuid, cpu_id);
  */
 void __cpuinit cpu_init(void)
 {
-	struct cpuid *id = &per_cpu(cpu_id, smp_processor_id());
+	struct s390_idle_data *idle = &__get_cpu_var(s390_idle);
+	struct cpuid *id = &__get_cpu_var(cpu_id);
 
 	get_cpu_id(id);
 	atomic_inc(&init_mm.mm_count);
 	current->active_mm = &init_mm;
 	BUG_ON(current->mm);
 	enter_lazy_tlb(&init_mm, current);
+	memset(idle, 0, sizeof(*idle));
 }
 
 /*
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 4993e689b2c2..f4eb37680b91 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -1,7 +1,7 @@
 /*
  *  Ptrace user space interface.
  *
- *    Copyright IBM Corp. 1999,2010
+ *    Copyright IBM Corp. 1999, 2010
  *    Author(s): Denis Joseph Barrow
  *               Martin Schwidefsky (schwidefsky@de.ibm.com)
  */
diff --git a/arch/s390/kernel/reipl.S b/arch/s390/kernel/reipl.S
index ad67c214be04..dd8016b0477e 100644
--- a/arch/s390/kernel/reipl.S
+++ b/arch/s390/kernel/reipl.S
@@ -1,13 +1,12 @@
 /*
- *  arch/s390/kernel/reipl.S
- *
  *  S390 version
- *    Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Copyright IBM Corp. 2000
  *    Author(s): Holger Smolinski (Holger.Smolinski@de.ibm.com)
  */
 
 #include <linux/linkage.h>
 #include <asm/asm-offsets.h>
+#include <asm/sigp.h>
 
 #
 # store_status: Empty implementation until kdump is supported on 31 bit
@@ -60,7 +59,7 @@ ENTRY(do_reipl_asm)
 		bas	%r14,.Ldisab-.Lpg0(%r13)
 .L003:		st	%r1,__LC_SUBCHANNEL_ID
 		lpsw	0
-		sigp	0,0,0(6)
+		sigp	0,0,SIGP_RESTART
 .Ldisab:	st	%r14,.Ldispsw+4-.Lpg0(%r13)
 		lpsw	.Ldispsw-.Lpg0(%r13)
 		.align	8
diff --git a/arch/s390/kernel/reipl64.S b/arch/s390/kernel/reipl64.S
index 36b32658fb24..dc3b1273c4dc 100644
--- a/arch/s390/kernel/reipl64.S
+++ b/arch/s390/kernel/reipl64.S
@@ -1,11 +1,12 @@
 /*
- *    Copyright IBM Corp 2000,2011
+ *    Copyright IBM Corp 2000, 2011
  *    Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
  *		 Denis Joseph Barrow,
  */
 
 #include <linux/linkage.h>
 #include <asm/asm-offsets.h>
+#include <asm/sigp.h>
 
 #
 # store_status
@@ -106,7 +107,7 @@ ENTRY(do_reipl_asm)
 .L003:		st	%r1,__LC_SUBCHANNEL_ID
 		lhi	%r1,0		 # mode 0 = esa
 		slr	%r0,%r0 	 # set cpuid to zero
-		sigp	%r1,%r0,0x12	 # switch to esa mode
+		sigp	%r1,%r0,SIGP_SET_ARCHITECTURE # switch to esa mode
 		lpsw	0
 .Ldisab:	sll	%r14,1
 		srl	%r14,1		 # need to kill hi bit to avoid specification exceptions.
diff --git a/arch/s390/kernel/relocate_kernel.S b/arch/s390/kernel/relocate_kernel.S
index c91d70aede91..f4e6f20e117a 100644
--- a/arch/s390/kernel/relocate_kernel.S
+++ b/arch/s390/kernel/relocate_kernel.S
@@ -1,7 +1,5 @@
 /*
- * arch/s390/kernel/relocate_kernel.S
- *
- * (C) Copyright IBM Corp. 2005
+ * Copyright IBM Corp. 2005
  *
  * Author(s): Rolf Adelsberger,
  *	      Heiko Carstens <heiko.carstens@de.ibm.com>
@@ -9,6 +7,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/sigp.h>
 
 /*
  * moves the new kernel to its destination...
@@ -93,7 +92,7 @@ ENTRY(relocate_kernel)
 	.no_diag308:
 		sr	%r1,%r1		# clear %r1
 		sr	%r2,%r2		# clear %r2
-		sigp	%r1,%r2,0x12	# set cpuid to zero
+		sigp	%r1,%r2,SIGP_SET_ARCHITECTURE # set cpuid to zero
 		lpsw	0		# hopefully start new kernel...
 
 		.align	8
diff --git a/arch/s390/kernel/relocate_kernel64.S b/arch/s390/kernel/relocate_kernel64.S
index 7c3ce589a7f0..cfac28330b03 100644
--- a/arch/s390/kernel/relocate_kernel64.S
+++ b/arch/s390/kernel/relocate_kernel64.S
@@ -1,7 +1,5 @@
 /*
- * arch/s390/kernel/relocate_kernel64.S
- *
- * (C) Copyright IBM Corp. 2005
+ * Copyright IBM Corp. 2005
  *
  * Author(s): Rolf Adelsberger,
  *	      Heiko Carstens <heiko.carstens@de.ibm.com>
@@ -9,6 +7,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/sigp.h>
 
 /*
  * moves the new kernel to its destination...
@@ -45,7 +44,7 @@ ENTRY(relocate_kernel)
 		diag	%r0,%r0,0x308
 	.back:
 		lhi	%r1,1		# mode 1 = esame
-		sigp	%r1,%r0,0x12	# switch to esame mode
+		sigp	%r1,%r0,SIGP_SET_ARCHITECTURE # switch to esame mode
 		sam64			# switch to 64 bit addressing mode
 		basr	%r13,0
 	.back_base:
@@ -96,7 +95,7 @@ ENTRY(relocate_kernel)
 		sam31			# 31 bit mode
 		sr	%r1,%r1		# erase register r1
 		sr	%r2,%r2		# erase register r2
-		sigp	%r1,%r2,0x12	# set cpuid to zero
+		sigp	%r1,%r2,SIGP_SET_ARCHITECTURE # set cpuid to zero
 		lpsw	0		# hopefully start new kernel...
 
 		.align	8
diff --git a/arch/s390/kernel/sclp.S b/arch/s390/kernel/sclp.S
index 95792d846bb6..bf053898630d 100644
--- a/arch/s390/kernel/sclp.S
+++ b/arch/s390/kernel/sclp.S
@@ -1,7 +1,7 @@
 /*
  * Mini SCLP driver.
  *
- * Copyright IBM Corp. 2004,2009
+ * Copyright IBM Corp. 2004, 2009
  *
  *   Author(s):	Peter Oberparleiter <Peter.Oberparleiter@de.ibm.com>,
  *		Heiko Carstens <heiko.carstens@de.ibm.com>,
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 489d1d8d96b0..34d75b50526c 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -1,8 +1,6 @@
 /*
- *  arch/s390/kernel/setup.c
- *
  *  S390 version
- *    Copyright (C) IBM Corp. 1999,2012
+ *    Copyright IBM Corp. 1999, 2012
  *    Author(s): Hartmut Penner (hp@de.ibm.com),
  *               Martin Schwidefsky (schwidefsky@de.ibm.com)
  *
@@ -430,10 +428,11 @@ static void __init setup_lowcore(void)
 	lc->restart_source = -1UL;
 
 	/* Setup absolute zero lowcore */
-	memcpy_absolute(&S390_lowcore.restart_stack, &lc->restart_stack,
-			4 * sizeof(unsigned long));
-	memcpy_absolute(&S390_lowcore.restart_psw, &lc->restart_psw,
-			sizeof(lc->restart_psw));
+	mem_assign_absolute(S390_lowcore.restart_stack, lc->restart_stack);
+	mem_assign_absolute(S390_lowcore.restart_fn, lc->restart_fn);
+	mem_assign_absolute(S390_lowcore.restart_data, lc->restart_data);
+	mem_assign_absolute(S390_lowcore.restart_source, lc->restart_source);
+	mem_assign_absolute(S390_lowcore.restart_psw, lc->restart_psw);
 
 	set_prefix((u32)(unsigned long) lc);
 	lowcore_ptr[0] = lc;
@@ -598,9 +597,7 @@ static void __init setup_memory_end(void)
 static void __init setup_vmcoreinfo(void)
 {
 #ifdef CONFIG_KEXEC
-	unsigned long ptr = paddr_vmcoreinfo_note();
-
-	memcpy_absolute(&S390_lowcore.vmcore_info, &ptr, sizeof(ptr));
+	mem_assign_absolute(S390_lowcore.vmcore_info, paddr_vmcoreinfo_note());
 #endif
 }
 
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index ac565b44aabb..c13a2a37ef00 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -1,7 +1,5 @@
 /*
- *  arch/s390/kernel/signal.c
- *
- *    Copyright (C) IBM Corp. 1999,2006
+ *    Copyright IBM Corp. 1999, 2006
  *    Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
  *
  *    Based on Intel version
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 8dca9c248ac7..720fda1620f2 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -1,7 +1,7 @@
 /*
  *  SMP related functions
  *
- *    Copyright IBM Corp. 1999,2012
+ *    Copyright IBM Corp. 1999, 2012
  *    Author(s): Denis Joseph Barrow,
  *		 Martin Schwidefsky <schwidefsky@de.ibm.com>,
  *		 Heiko Carstens <heiko.carstens@de.ibm.com>,
@@ -38,40 +38,16 @@
 #include <asm/setup.h>
 #include <asm/irq.h>
 #include <asm/tlbflush.h>
-#include <asm/timer.h>
+#include <asm/vtimer.h>
 #include <asm/lowcore.h>
 #include <asm/sclp.h>
 #include <asm/vdso.h>
 #include <asm/debug.h>
 #include <asm/os_info.h>
+#include <asm/sigp.h>
 #include "entry.h"
 
 enum {
-	sigp_sense = 1,
-	sigp_external_call = 2,
-	sigp_emergency_signal = 3,
-	sigp_start = 4,
-	sigp_stop = 5,
-	sigp_restart = 6,
-	sigp_stop_and_store_status = 9,
-	sigp_initial_cpu_reset = 11,
-	sigp_cpu_reset = 12,
-	sigp_set_prefix = 13,
-	sigp_store_status_at_address = 14,
-	sigp_store_extended_status_at_address = 15,
-	sigp_set_architecture = 18,
-	sigp_conditional_emergency_signal = 19,
-	sigp_sense_running = 21,
-};
-
-enum {
-	sigp_order_code_accepted = 0,
-	sigp_status_stored = 1,
-	sigp_busy = 2,
-	sigp_not_operational = 3,
-};
-
-enum {
 	ec_schedule = 0,
 	ec_call_function,
 	ec_call_function_single,
@@ -124,7 +100,7 @@ static inline int __pcpu_sigp_relax(u16 addr, u8 order, u32 parm, u32 *status)
 
 	while (1) {
 		cc = __pcpu_sigp(addr, order, parm, status);
-		if (cc != sigp_busy)
+		if (cc != SIGP_CC_BUSY)
 			return cc;
 		cpu_relax();
 	}
@@ -136,7 +112,7 @@ static int pcpu_sigp_retry(struct pcpu *pcpu, u8 order, u32 parm)
 
 	for (retry = 0; ; retry++) {
 		cc = __pcpu_sigp(pcpu->address, order, parm, &pcpu->status);
-		if (cc != sigp_busy)
+		if (cc != SIGP_CC_BUSY)
 			break;
 		if (retry >= 3)
 			udelay(10);
@@ -146,20 +122,19 @@ static int pcpu_sigp_retry(struct pcpu *pcpu, u8 order, u32 parm)
 
 static inline int pcpu_stopped(struct pcpu *pcpu)
 {
-	if (__pcpu_sigp(pcpu->address, sigp_sense,
-			0, &pcpu->status) != sigp_status_stored)
+	if (__pcpu_sigp(pcpu->address, SIGP_SENSE,
+			0, &pcpu->status) != SIGP_CC_STATUS_STORED)
 		return 0;
-	/* Check for stopped and check stop state */
-	return !!(pcpu->status & 0x50);
+	return !!(pcpu->status & (SIGP_STATUS_CHECK_STOP|SIGP_STATUS_STOPPED));
 }
 
 static inline int pcpu_running(struct pcpu *pcpu)
 {
-	if (__pcpu_sigp(pcpu->address, sigp_sense_running,
-			0, &pcpu->status) != sigp_status_stored)
+	if (__pcpu_sigp(pcpu->address, SIGP_SENSE_RUNNING,
+			0, &pcpu->status) != SIGP_CC_STATUS_STORED)
 		return 1;
-	/* Check for running status */
-	return !(pcpu->status & 0x400);
+	/* Status stored condition code is equivalent to cpu not running. */
+	return 0;
 }
 
 /*
@@ -181,7 +156,7 @@ static void pcpu_ec_call(struct pcpu *pcpu, int ec_bit)
 
 	set_bit(ec_bit, &pcpu->ec_mask);
 	order = pcpu_running(pcpu) ?
-		sigp_external_call : sigp_emergency_signal;
+		SIGP_EXTERNAL_CALL : SIGP_EMERGENCY_SIGNAL;
 	pcpu_sigp_retry(pcpu, order, 0);
 }
 
@@ -214,7 +189,7 @@ static int __cpuinit pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu)
 		goto out;
 #endif
 	lowcore_ptr[cpu] = lc;
-	pcpu_sigp_retry(pcpu, sigp_set_prefix, (u32)(unsigned long) lc);
+	pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, (u32)(unsigned long) lc);
 	return 0;
 out:
 	if (pcpu != &pcpu_devices[0]) {
@@ -229,7 +204,7 @@ out:
 
 static void pcpu_free_lowcore(struct pcpu *pcpu)
 {
-	pcpu_sigp_retry(pcpu, sigp_set_prefix, 0);
+	pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, 0);
 	lowcore_ptr[pcpu - pcpu_devices] = NULL;
 #ifndef CONFIG_64BIT
 	if (MACHINE_HAS_IEEE) {
@@ -288,7 +263,7 @@ static void pcpu_start_fn(struct pcpu *pcpu, void (*func)(void *), void *data)
 	lc->restart_fn = (unsigned long) func;
 	lc->restart_data = (unsigned long) data;
 	lc->restart_source = -1UL;
-	pcpu_sigp_retry(pcpu, sigp_restart, 0);
+	pcpu_sigp_retry(pcpu, SIGP_RESTART, 0);
 }
 
 /*
@@ -298,26 +273,26 @@ static void pcpu_delegate(struct pcpu *pcpu, void (*func)(void *),
 			  void *data, unsigned long stack)
 {
 	struct _lowcore *lc = lowcore_ptr[pcpu - pcpu_devices];
-	struct {
-		unsigned long	stack;
-		void		*func;
-		void		*data;
-		unsigned long	source;
-	} restart = { stack, func, data, stap() };
+	unsigned long source_cpu = stap();
 
 	__load_psw_mask(psw_kernel_bits);
-	if (pcpu->address == restart.source)
+	if (pcpu->address == source_cpu)
 		func(data);	/* should not return */
 	/* Stop target cpu (if func returns this stops the current cpu). */
-	pcpu_sigp_retry(pcpu, sigp_stop, 0);
+	pcpu_sigp_retry(pcpu, SIGP_STOP, 0);
 	/* Restart func on the target cpu and stop the current cpu. */
-	memcpy_absolute(&lc->restart_stack, &restart, sizeof(restart));
+	mem_assign_absolute(lc->restart_stack, stack);
+	mem_assign_absolute(lc->restart_fn, (unsigned long) func);
+	mem_assign_absolute(lc->restart_data, (unsigned long) data);
+	mem_assign_absolute(lc->restart_source, source_cpu);
 	asm volatile(
-		"0:	sigp	0,%0,6	# sigp restart to target cpu\n"
+		"0:	sigp	0,%0,%2	# sigp restart to target cpu\n"
 		"	brc	2,0b	# busy, try again\n"
-		"1:	sigp	0,%1,5	# sigp stop to current cpu\n"
+		"1:	sigp	0,%1,%3	# sigp stop to current cpu\n"
 		"	brc	2,1b	# busy, try again\n"
-		: : "d" (pcpu->address), "d" (restart.source) : "0", "1", "cc");
+		: : "d" (pcpu->address), "d" (source_cpu),
+		    "K" (SIGP_RESTART), "K" (SIGP_STOP)
+		: "0", "1", "cc");
 	for (;;) ;
 }
 
@@ -388,8 +363,8 @@ void smp_emergency_stop(cpumask_t *cpumask)
 	for_each_cpu(cpu, cpumask) {
 		struct pcpu *pcpu = pcpu_devices + cpu;
 		set_bit(ec_stop_cpu, &pcpu->ec_mask);
-		while (__pcpu_sigp(pcpu->address, sigp_emergency_signal,
-				   0, NULL) == sigp_busy &&
+		while (__pcpu_sigp(pcpu->address, SIGP_EMERGENCY_SIGNAL,
+				   0, NULL) == SIGP_CC_BUSY &&
 		       get_clock() < end)
 			cpu_relax();
 	}
@@ -425,7 +400,7 @@ void smp_send_stop(void)
 	/* stop all processors */
 	for_each_cpu(cpu, &cpumask) {
 		struct pcpu *pcpu = pcpu_devices + cpu;
-		pcpu_sigp_retry(pcpu, sigp_stop, 0);
+		pcpu_sigp_retry(pcpu, SIGP_STOP, 0);
 		while (!pcpu_stopped(pcpu))
 			cpu_relax();
 	}
@@ -436,7 +411,7 @@ void smp_send_stop(void)
  */
 void smp_stop_cpu(void)
 {
-	pcpu_sigp_retry(pcpu_devices + smp_processor_id(), sigp_stop, 0);
+	pcpu_sigp_retry(pcpu_devices + smp_processor_id(), SIGP_STOP, 0);
 	for (;;) ;
 }
 
@@ -590,7 +565,7 @@ static void __init smp_get_save_area(int cpu, u16 address)
 	}
 #endif
 	/* Get the registers of a non-boot cpu. */
-	__pcpu_sigp_relax(address, sigp_stop_and_store_status, 0, NULL);
+	__pcpu_sigp_relax(address, SIGP_STOP_AND_STORE_STATUS, 0, NULL);
 	memcpy_real(save_area, lc + SAVE_AREA_BASE, sizeof(*save_area));
 }
 
@@ -599,8 +574,8 @@ int smp_store_status(int cpu)
 	struct pcpu *pcpu;
 
 	pcpu = pcpu_devices + cpu;
-	if (__pcpu_sigp_relax(pcpu->address, sigp_stop_and_store_status,
-			      0, NULL) != sigp_order_code_accepted)
+	if (__pcpu_sigp_relax(pcpu->address, SIGP_STOP_AND_STORE_STATUS,
+			      0, NULL) != SIGP_CC_ORDER_CODE_ACCEPTED)
 		return -EIO;
 	return 0;
 }
@@ -621,8 +596,8 @@ static struct sclp_cpu_info *smp_get_cpu_info(void)
 	if (info && (use_sigp_detection || sclp_get_cpu_info(info))) {
 		use_sigp_detection = 1;
 		for (address = 0; address <= MAX_CPU_ADDRESS; address++) {
-			if (__pcpu_sigp_relax(address, sigp_sense, 0, NULL) ==
-			    sigp_not_operational)
+			if (__pcpu_sigp_relax(address, SIGP_SENSE, 0, NULL) ==
+			    SIGP_CC_NOT_OPERATIONAL)
 				continue;
 			info->cpu[info->configured].address = address;
 			info->configured++;
@@ -732,8 +707,8 @@ int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle)
 	pcpu = pcpu_devices + cpu;
 	if (pcpu->state != CPU_STATE_CONFIGURED)
 		return -EIO;
-	if (pcpu_sigp_retry(pcpu, sigp_initial_cpu_reset, 0) !=
-	    sigp_order_code_accepted)
+	if (pcpu_sigp_retry(pcpu, SIGP_INITIAL_CPU_RESET, 0) !=
+	    SIGP_CC_ORDER_CODE_ACCEPTED)
 		return -EIO;
 
 	rc = pcpu_alloc_lowcore(pcpu, cpu);
@@ -793,7 +768,7 @@ void __cpu_die(unsigned int cpu)
 void __noreturn cpu_die(void)
 {
 	idle_task_exit();
-	pcpu_sigp_retry(pcpu_devices + smp_processor_id(), sigp_stop, 0);
+	pcpu_sigp_retry(pcpu_devices + smp_processor_id(), SIGP_STOP, 0);
 	for (;;) ;
 }
 
@@ -940,7 +915,7 @@ static ssize_t show_idle_count(struct device *dev,
 	do {
 		sequence = ACCESS_ONCE(idle->sequence);
 		idle_count = ACCESS_ONCE(idle->idle_count);
-		if (ACCESS_ONCE(idle->idle_enter))
+		if (ACCESS_ONCE(idle->clock_idle_enter))
 			idle_count++;
 	} while ((sequence & 1) || (idle->sequence != sequence));
 	return sprintf(buf, "%llu\n", idle_count);
@@ -958,8 +933,8 @@ static ssize_t show_idle_time(struct device *dev,
 		now = get_clock();
 		sequence = ACCESS_ONCE(idle->sequence);
 		idle_time = ACCESS_ONCE(idle->idle_time);
-		idle_enter = ACCESS_ONCE(idle->idle_enter);
-		idle_exit = ACCESS_ONCE(idle->idle_exit);
+		idle_enter = ACCESS_ONCE(idle->clock_idle_enter);
+		idle_exit = ACCESS_ONCE(idle->clock_idle_exit);
 	} while ((sequence & 1) || (idle->sequence != sequence));
 	idle_time += idle_enter ? ((idle_exit ? : now) - idle_enter) : 0;
 	return sprintf(buf, "%llu\n", idle_time >> 12);
@@ -982,14 +957,11 @@ static int __cpuinit smp_cpu_notify(struct notifier_block *self,
 	unsigned int cpu = (unsigned int)(long)hcpu;
 	struct cpu *c = &pcpu_devices[cpu].cpu;
 	struct device *s = &c->dev;
-	struct s390_idle_data *idle;
 	int err = 0;
 
 	switch (action) {
 	case CPU_ONLINE:
 	case CPU_ONLINE_FROZEN:
-		idle = &per_cpu(s390_idle, cpu);
-		memset(idle, 0, sizeof(struct s390_idle_data));
 		err = sysfs_create_group(&s->kobj, &cpu_online_attr_group);
 		break;
 	case CPU_DEAD:
diff --git a/arch/s390/kernel/stacktrace.c b/arch/s390/kernel/stacktrace.c
index 8841919ef7e6..1785cd82253c 100644
--- a/arch/s390/kernel/stacktrace.c
+++ b/arch/s390/kernel/stacktrace.c
@@ -1,9 +1,7 @@
 /*
- * arch/s390/kernel/stacktrace.c
- *
  * Stack trace management functions
  *
- *  Copyright (C) IBM Corp. 2006
+ *  Copyright IBM Corp. 2006
  *  Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
  */
 
diff --git a/arch/s390/kernel/swsusp_asm64.S b/arch/s390/kernel/swsusp_asm64.S
index dd70ef046058..d4ca4e0617b5 100644
--- a/arch/s390/kernel/swsusp_asm64.S
+++ b/arch/s390/kernel/swsusp_asm64.S
@@ -12,6 +12,7 @@
 #include <asm/ptrace.h>
 #include <asm/thread_info.h>
 #include <asm/asm-offsets.h>
+#include <asm/sigp.h>
 
 /*
  * Save register context in absolute 0 lowcore and call swsusp_save() to
@@ -163,7 +164,7 @@ ENTRY(swsusp_arch_resume)
 	diag	%r0,%r0,0x308
 restart_entry:
 	lhi	%r1,1
-	sigp	%r1,%r0,0x12
+	sigp	%r1,%r0,SIGP_SET_ARCHITECTURE
 	sam64
 	larl	%r1,.Lnew_pgm_check_psw
 	lpswe	0(%r1)
@@ -179,7 +180,7 @@ pgm_check_entry:
 	larl	%r4,.Lrestart_suspend_psw	/* Set new restart PSW */
 	mvc	__LC_RST_NEW_PSW(16,%r0),0(%r4)
 3:
-	sigp	%r9,%r1,11			/* sigp initial cpu reset */
+	sigp	%r9,%r1,SIGP_INITIAL_CPU_RESET	/* sigp initial cpu reset */
 	brc	8,4f				/* accepted */
 	brc	2,3b				/* busy, try again */
 
@@ -190,16 +191,16 @@ pgm_check_entry:
 	larl	%r3,_sclp_print_early
 	lghi	%r1,0
 	sam31
-	sigp	%r1,%r0,0x12
+	sigp	%r1,%r0,SIGP_SET_ARCHITECTURE
 	basr	%r14,%r3
 	larl	%r3,.Ldisabled_wait_31
 	lpsw	0(%r3)
 4:
 	/* Switch to suspend CPU */
-	sigp	%r9,%r1,6		/* sigp restart to suspend CPU */
+	sigp	%r9,%r1,SIGP_RESTART	/* sigp restart to suspend CPU */
 	brc	2,4b			/* busy, try again */
 5:
-	sigp	%r9,%r2,5		/* sigp stop to current resume CPU */
+	sigp	%r9,%r2,SIGP_STOP	/* sigp stop to current resume CPU */
 	brc	2,5b			/* busy, try again */
 6:	j	6b
 
@@ -207,7 +208,7 @@ restart_suspend:
 	larl	%r1,.Lresume_cpu
 	llgh	%r2,0(%r1)
 7:
-	sigp	%r9,%r2,1		/* sigp sense, wait for resume CPU */
+	sigp	%r9,%r2,SIGP_SENSE	/* sigp sense, wait for resume CPU */
 	brc	8,7b			/* accepted, status 0, still running */
 	brc	2,7b			/* busy, try again */
 	tmll	%r9,0x40		/* Test if resume CPU is stopped */
diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
index 78ea1948ff51..b4a29eee41b8 100644
--- a/arch/s390/kernel/sys_s390.c
+++ b/arch/s390/kernel/sys_s390.c
@@ -1,8 +1,6 @@
 /*
- *  arch/s390/kernel/sys_s390.c
- *
  *  S390 version
- *    Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Copyright IBM Corp. 1999, 2000
  *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
  *               Thomas Spatzier (tspat@de.ibm.com)
  *
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index d4e1cb1dbcd1..dcec960fc724 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -1,5 +1,4 @@
 /*
- *  arch/s390/kernel/time.c
  *    Time of day based timer functions.
  *
  *  S390 version
@@ -45,7 +44,7 @@
 #include <asm/vdso.h>
 #include <asm/irq.h>
 #include <asm/irq_regs.h>
-#include <asm/timer.h>
+#include <asm/vtimer.h>
 #include <asm/etr.h>
 #include <asm/cio.h>
 #include "entry.h"
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 4f8dc942257c..05151e06c388 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -1,5 +1,5 @@
 /*
- *    Copyright IBM Corp. 2007,2011
+ *    Copyright IBM Corp. 2007, 2011
  *    Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
  */
 
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 77cdf4234ebc..af2421a0f315 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -1,8 +1,6 @@
 /*
- *  arch/s390/kernel/traps.c
- *
  *  S390 version
- *    Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Copyright IBM Corp. 1999, 2000
  *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
  *               Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
  *
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 39ebff506946..4fc97b40a6e1 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -1,71 +1,82 @@
 /*
- *  arch/s390/kernel/vtime.c
  *    Virtual cpu timer based timer functions.
  *
- *  S390 version
- *    Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Copyright IBM Corp. 2004, 2012
  *    Author(s): Jan Glauber <jan.glauber@de.ibm.com>
  */
 
-#include <linux/module.h>
+#include <linux/kernel_stat.h>
+#include <linux/notifier.h>
+#include <linux/kprobes.h>
+#include <linux/export.h>
 #include <linux/kernel.h>
-#include <linux/time.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/types.h>
 #include <linux/timex.h>
-#include <linux/notifier.h>
-#include <linux/kernel_stat.h>
-#include <linux/rcupdate.h>
-#include <linux/posix-timers.h>
+#include <linux/types.h>
+#include <linux/time.h>
 #include <linux/cpu.h>
-#include <linux/kprobes.h>
+#include <linux/smp.h>
 
-#include <asm/timer.h>
 #include <asm/irq_regs.h>
 #include <asm/cputime.h>
+#include <asm/vtimer.h>
 #include <asm/irq.h>
 #include "entry.h"
 
-static DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer);
+static void virt_timer_expire(void);
 
 DEFINE_PER_CPU(struct s390_idle_data, s390_idle);
 
-static inline __u64 get_vtimer(void)
+static LIST_HEAD(virt_timer_list);
+static DEFINE_SPINLOCK(virt_timer_lock);
+static atomic64_t virt_timer_current;
+static atomic64_t virt_timer_elapsed;
+
+static inline u64 get_vtimer(void)
 {
-	__u64 timer;
+	u64 timer;
 
-	asm volatile("STPT %0" : "=m" (timer));
+	asm volatile("stpt %0" : "=m" (timer));
 	return timer;
 }
 
-static inline void set_vtimer(__u64 expires)
+static inline void set_vtimer(u64 expires)
 {
-	__u64 timer;
+	u64 timer;
 
-	asm volatile ("  STPT %0\n"  /* Store current cpu timer value */
-		      "  SPT %1"     /* Set new value immediately afterwards */
-		      : "=m" (timer) : "m" (expires) );
+	asm volatile(
+		"	stpt	%0\n"	/* Store current cpu timer value */
+		"	spt	%1"	/* Set new value imm. afterwards */
+		: "=m" (timer) : "m" (expires));
 	S390_lowcore.system_timer += S390_lowcore.last_update_timer - timer;
 	S390_lowcore.last_update_timer = expires;
 }
 
+static inline int virt_timer_forward(u64 elapsed)
+{
+	BUG_ON(!irqs_disabled());
+
+	if (list_empty(&virt_timer_list))
+		return 0;
+	elapsed = atomic64_add_return(elapsed, &virt_timer_elapsed);
+	return elapsed >= atomic64_read(&virt_timer_current);
+}
+
 /*
  * Update process times based on virtual cpu times stored by entry.S
  * to the lowcore fields user_timer, system_timer & steal_clock.
  */
-static void do_account_vtime(struct task_struct *tsk, int hardirq_offset)
+static int do_account_vtime(struct task_struct *tsk, int hardirq_offset)
 {
 	struct thread_info *ti = task_thread_info(tsk);
-	__u64 timer, clock, user, system, steal;
+	u64 timer, clock, user, system, steal;
 
 	timer = S390_lowcore.last_update_timer;
 	clock = S390_lowcore.last_update_clock;
-	asm volatile ("  STPT %0\n"    /* Store current cpu timer value */
-		      "  STCK %1"      /* Store current tod clock value */
-		      : "=m" (S390_lowcore.last_update_timer),
-		        "=m" (S390_lowcore.last_update_clock) );
+	asm volatile(
+		"	stpt	%0\n"	/* Store current cpu timer value */
+		"	stck	%1"	/* Store current tod clock value */
+		: "=m" (S390_lowcore.last_update_timer),
+		  "=m" (S390_lowcore.last_update_clock));
 	S390_lowcore.system_timer += timer - S390_lowcore.last_update_timer;
 	S390_lowcore.steal_timer += S390_lowcore.last_update_clock - clock;
 
@@ -84,6 +95,8 @@ static void do_account_vtime(struct task_struct *tsk, int hardirq_offset)
 		S390_lowcore.steal_timer = 0;
 		account_steal_time(steal);
 	}
+
+	return virt_timer_forward(user + system);
 }
 
 void account_vtime(struct task_struct *prev, struct task_struct *next)
@@ -101,7 +114,8 @@ void account_vtime(struct task_struct *prev, struct task_struct *next)
 
 void account_process_tick(struct task_struct *tsk, int user_tick)
 {
-	do_account_vtime(tsk, HARDIRQ_OFFSET);
+	if (do_account_vtime(tsk, HARDIRQ_OFFSET))
+		virt_timer_expire();
 }
 
 /*
@@ -111,7 +125,7 @@ void account_process_tick(struct task_struct *tsk, int user_tick)
 void account_system_vtime(struct task_struct *tsk)
 {
 	struct thread_info *ti = task_thread_info(tsk);
-	__u64 timer, system;
+	u64 timer, system;
 
 	timer = S390_lowcore.last_update_timer;
 	S390_lowcore.last_update_timer = get_vtimer();
@@ -121,13 +135,14 @@ void account_system_vtime(struct task_struct *tsk)
 	S390_lowcore.steal_timer -= system;
 	ti->system_timer = S390_lowcore.system_timer;
 	account_system_time(tsk, 0, system, system);
+
+	virt_timer_forward(system);
 }
 EXPORT_SYMBOL_GPL(account_system_vtime);
 
 void __kprobes vtime_stop_cpu(void)
 {
 	struct s390_idle_data *idle = &__get_cpu_var(s390_idle);
-	struct vtimer_queue *vq = &__get_cpu_var(virt_cpu_timer);
 	unsigned long long idle_time;
 	unsigned long psw_mask;
 
@@ -141,7 +156,7 @@ void __kprobes vtime_stop_cpu(void)
 	idle->nohz_delay = 0;
 
 	/* Call the assembler magic in entry.S */
-	psw_idle(idle, vq, psw_mask, !list_empty(&vq->list));
+	psw_idle(idle, psw_mask);
 
 	/* Reenable preemption tracer. */
 	start_critical_timings();
@@ -149,9 +164,9 @@ void __kprobes vtime_stop_cpu(void)
 	/* Account time spent with enabled wait psw loaded as idle time. */
 	idle->sequence++;
 	smp_wmb();
-	idle_time = idle->idle_exit - idle->idle_enter;
+	idle_time = idle->clock_idle_exit - idle->clock_idle_enter;
+	idle->clock_idle_enter = idle->clock_idle_exit = 0ULL;
 	idle->idle_time += idle_time;
-	idle->idle_enter = idle->idle_exit = 0ULL;
 	idle->idle_count++;
 	account_idle_time(idle_time);
 	smp_wmb();
@@ -167,10 +182,10 @@ cputime64_t s390_get_idle_time(int cpu)
 	do {
 		now = get_clock();
 		sequence = ACCESS_ONCE(idle->sequence);
-		idle_enter = ACCESS_ONCE(idle->idle_enter);
-		idle_exit = ACCESS_ONCE(idle->idle_exit);
+		idle_enter = ACCESS_ONCE(idle->clock_idle_enter);
+		idle_exit = ACCESS_ONCE(idle->clock_idle_exit);
 	} while ((sequence & 1) || (idle->sequence != sequence));
-	return idle_enter ? ((idle_exit ? : now) - idle_enter) : 0;
+	return idle_enter ? ((idle_exit ?: now) - idle_enter) : 0;
 }
 
 /*
@@ -179,11 +194,11 @@ cputime64_t s390_get_idle_time(int cpu)
  */
 static void list_add_sorted(struct vtimer_list *timer, struct list_head *head)
 {
-	struct vtimer_list *event;
+	struct vtimer_list *tmp;
 
-	list_for_each_entry(event, head, entry) {
-		if (event->expires > timer->expires) {
-			list_add_tail(&timer->entry, &event->entry);
+	list_for_each_entry(tmp, head, entry) {
+		if (tmp->expires > timer->expires) {
+			list_add_tail(&timer->entry, &tmp->entry);
 			return;
 		}
 	}
@@ -191,82 +206,45 @@ static void list_add_sorted(struct vtimer_list *timer, struct list_head *head)
 }
 
 /*
- * Do the callback functions of expired vtimer events.
- * Called from within the interrupt handler.
- */
-static void do_callbacks(struct list_head *cb_list)
-{
-	struct vtimer_queue *vq;
-	struct vtimer_list *event, *tmp;
-
-	if (list_empty(cb_list))
-		return;
-
-	vq = &__get_cpu_var(virt_cpu_timer);
-
-	list_for_each_entry_safe(event, tmp, cb_list, entry) {
-		list_del_init(&event->entry);
-		(event->function)(event->data);
-		if (event->interval) {
-			/* Recharge interval timer */
-			event->expires = event->interval + vq->elapsed;
-			spin_lock(&vq->lock);
-			list_add_sorted(event, &vq->list);
-			spin_unlock(&vq->lock);
-		}
-	}
-}
-
-/*
- * Handler for the virtual CPU timer.
+ * Handler for expired virtual CPU timer.
  */
-static void do_cpu_timer_interrupt(struct ext_code ext_code,
-				   unsigned int param32, unsigned long param64)
+static void virt_timer_expire(void)
 {
-	struct vtimer_queue *vq;
-	struct vtimer_list *event, *tmp;
-	struct list_head cb_list;	/* the callback queue */
-	__u64 elapsed, next;
-
-	kstat_cpu(smp_processor_id()).irqs[EXTINT_TMR]++;
-	INIT_LIST_HEAD(&cb_list);
-	vq = &__get_cpu_var(virt_cpu_timer);
-
-	/* walk timer list, fire all expired events */
-	spin_lock(&vq->lock);
-
-	elapsed = vq->elapsed + (vq->timer - S390_lowcore.async_enter_timer);
-	BUG_ON((s64) elapsed < 0);
-	vq->elapsed = 0;
-	list_for_each_entry_safe(event, tmp, &vq->list, entry) {
-		if (event->expires < elapsed)
+	struct vtimer_list *timer, *tmp;
+	unsigned long elapsed;
+	LIST_HEAD(cb_list);
+
+	/* walk timer list, fire all expired timers */
+	spin_lock(&virt_timer_lock);
+	elapsed = atomic64_read(&virt_timer_elapsed);
+	list_for_each_entry_safe(timer, tmp, &virt_timer_list, entry) {
+		if (timer->expires < elapsed)
 			/* move expired timer to the callback queue */
-			list_move_tail(&event->entry, &cb_list);
+			list_move_tail(&timer->entry, &cb_list);
 		else
-			event->expires -= elapsed;
+			timer->expires -= elapsed;
 	}
-	spin_unlock(&vq->lock);
-
-	do_callbacks(&cb_list);
-
-	/* next event is first in list */
-	next = VTIMER_MAX_SLICE;
-	spin_lock(&vq->lock);
-	if (!list_empty(&vq->list)) {
-		event = list_first_entry(&vq->list, struct vtimer_list, entry);
-		next = event->expires;
+	if (!list_empty(&virt_timer_list)) {
+		timer = list_first_entry(&virt_timer_list,
+					 struct vtimer_list, entry);
+		atomic64_set(&virt_timer_current, timer->expires);
+	}
+	atomic64_sub(elapsed, &virt_timer_elapsed);
+	spin_unlock(&virt_timer_lock);
+
+	/* Do callbacks and recharge periodic timers */
+	list_for_each_entry_safe(timer, tmp, &cb_list, entry) {
+		list_del_init(&timer->entry);
+		timer->function(timer->data);
+		if (timer->interval) {
+			/* Recharge interval timer */
+			timer->expires = timer->interval +
+				atomic64_read(&virt_timer_elapsed);
+			spin_lock(&virt_timer_lock);
+			list_add_sorted(timer, &virt_timer_list);
+			spin_unlock(&virt_timer_lock);
+		}
 	}
-	spin_unlock(&vq->lock);
-	/*
-	 * To improve precision add the time spent by the
-	 * interrupt handler to the elapsed time.
-	 * Note: CPU timer counts down and we got an interrupt,
-	 *	 the current content is negative
-	 */
-	elapsed = S390_lowcore.async_enter_timer - get_vtimer();
-	set_vtimer(next - elapsed);
-	vq->timer = next - elapsed;
-	vq->elapsed = elapsed;
 }
 
 void init_virt_timer(struct vtimer_list *timer)
@@ -278,179 +256,108 @@ EXPORT_SYMBOL(init_virt_timer);
 
 static inline int vtimer_pending(struct vtimer_list *timer)
 {
-	return (!list_empty(&timer->entry));
+	return !list_empty(&timer->entry);
 }
 
-/*
- * this function should only run on the specified CPU
- */
 static void internal_add_vtimer(struct vtimer_list *timer)
 {
-	struct vtimer_queue *vq;
-	unsigned long flags;
-	__u64 left, expires;
-
-	vq = &per_cpu(virt_cpu_timer, timer->cpu);
-	spin_lock_irqsave(&vq->lock, flags);
-
-	BUG_ON(timer->cpu != smp_processor_id());
-
-	if (list_empty(&vq->list)) {
-		/* First timer on this cpu, just program it. */
-		list_add(&timer->entry, &vq->list);
-		set_vtimer(timer->expires);
-		vq->timer = timer->expires;
-		vq->elapsed = 0;
+	if (list_empty(&virt_timer_list)) {
+		/* First timer, just program it. */
+		atomic64_set(&virt_timer_current, timer->expires);
+		atomic64_set(&virt_timer_elapsed, 0);
+		list_add(&timer->entry, &virt_timer_list);
 	} else {
-		/* Check progress of old timers. */
-		expires = timer->expires;
-		left = get_vtimer();
-		if (likely((s64) expires < (s64) left)) {
+		/* Update timer against current base. */
+		timer->expires += atomic64_read(&virt_timer_elapsed);
+		if (likely((s64) timer->expires <
+			   (s64) atomic64_read(&virt_timer_current)))
 			/* The new timer expires before the current timer. */
-			set_vtimer(expires);
-			vq->elapsed += vq->timer - left;
-			vq->timer = expires;
-		} else {
-			vq->elapsed += vq->timer - left;
-			vq->timer = left;
-		}
-		/* Insert new timer into per cpu list. */
-		timer->expires += vq->elapsed;
-		list_add_sorted(timer, &vq->list);
+			atomic64_set(&virt_timer_current, timer->expires);
+		/* Insert new timer into the list. */
+		list_add_sorted(timer, &virt_timer_list);
 	}
-
-	spin_unlock_irqrestore(&vq->lock, flags);
-	/* release CPU acquired in prepare_vtimer or mod_virt_timer() */
-	put_cpu();
 }
 
-static inline void prepare_vtimer(struct vtimer_list *timer)
+static void __add_vtimer(struct vtimer_list *timer, int periodic)
 {
-	BUG_ON(!timer->function);
-	BUG_ON(!timer->expires || timer->expires > VTIMER_MAX_SLICE);
-	BUG_ON(vtimer_pending(timer));
-	timer->cpu = get_cpu();
+	unsigned long flags;
+
+	timer->interval = periodic ? timer->expires : 0;
+	spin_lock_irqsave(&virt_timer_lock, flags);
+	internal_add_vtimer(timer);
+	spin_unlock_irqrestore(&virt_timer_lock, flags);
 }
 
 /*
  * add_virt_timer - add an oneshot virtual CPU timer
  */
-void add_virt_timer(void *new)
+void add_virt_timer(struct vtimer_list *timer)
 {
-	struct vtimer_list *timer;
-
-	timer = (struct vtimer_list *)new;
-	prepare_vtimer(timer);
-	timer->interval = 0;
-	internal_add_vtimer(timer);
+	__add_vtimer(timer, 0);
 }
 EXPORT_SYMBOL(add_virt_timer);
 
 /*
  * add_virt_timer_int - add an interval virtual CPU timer
  */
-void add_virt_timer_periodic(void *new)
+void add_virt_timer_periodic(struct vtimer_list *timer)
 {
-	struct vtimer_list *timer;
-
-	timer = (struct vtimer_list *)new;
-	prepare_vtimer(timer);
-	timer->interval = timer->expires;
-	internal_add_vtimer(timer);
+	__add_vtimer(timer, 1);
 }
 EXPORT_SYMBOL(add_virt_timer_periodic);
 
-static int __mod_vtimer(struct vtimer_list *timer, __u64 expires, int periodic)
+static int __mod_vtimer(struct vtimer_list *timer, u64 expires, int periodic)
 {
-	struct vtimer_queue *vq;
 	unsigned long flags;
-	int cpu;
+	int rc;
 
 	BUG_ON(!timer->function);
-	BUG_ON(!expires || expires > VTIMER_MAX_SLICE);
 
 	if (timer->expires == expires && vtimer_pending(timer))
 		return 1;
-
-	cpu = get_cpu();
-	vq = &per_cpu(virt_cpu_timer, cpu);
-
-	/* disable interrupts before test if timer is pending */
-	spin_lock_irqsave(&vq->lock, flags);
-
-	/* if timer isn't pending add it on the current CPU */
-	if (!vtimer_pending(timer)) {
-		spin_unlock_irqrestore(&vq->lock, flags);
-
-		if (periodic)
-			timer->interval = expires;
-		else
-			timer->interval = 0;
-		timer->expires = expires;
-		timer->cpu = cpu;
-		internal_add_vtimer(timer);
-		return 0;
-	}
-
-	/* check if we run on the right CPU */
-	BUG_ON(timer->cpu != cpu);
-
-	list_del_init(&timer->entry);
+	spin_lock_irqsave(&virt_timer_lock, flags);
+	rc = vtimer_pending(timer);
+	if (rc)
+		list_del_init(&timer->entry);
+	timer->interval = periodic ? expires : 0;
 	timer->expires = expires;
-	if (periodic)
-		timer->interval = expires;
-
-	/* the timer can't expire anymore so we can release the lock */
-	spin_unlock_irqrestore(&vq->lock, flags);
 	internal_add_vtimer(timer);
-	return 1;
+	spin_unlock_irqrestore(&virt_timer_lock, flags);
+	return rc;
 }
 
 /*
- * If we change a pending timer the function must be called on the CPU
- * where the timer is running on.
- *
  * returns whether it has modified a pending timer (1) or not (0)
  */
-int mod_virt_timer(struct vtimer_list *timer, __u64 expires)
+int mod_virt_timer(struct vtimer_list *timer, u64 expires)
 {
 	return __mod_vtimer(timer, expires, 0);
 }
 EXPORT_SYMBOL(mod_virt_timer);
 
 /*
- * If we change a pending timer the function must be called on the CPU
- * where the timer is running on.
- *
  * returns whether it has modified a pending timer (1) or not (0)
  */
-int mod_virt_timer_periodic(struct vtimer_list *timer, __u64 expires)
+int mod_virt_timer_periodic(struct vtimer_list *timer, u64 expires)
 {
 	return __mod_vtimer(timer, expires, 1);
 }
 EXPORT_SYMBOL(mod_virt_timer_periodic);
 
 /*
- * delete a virtual timer
+ * Delete a virtual timer.
  *
  * returns whether the deleted timer was pending (1) or not (0)
  */
 int del_virt_timer(struct vtimer_list *timer)
 {
 	unsigned long flags;
-	struct vtimer_queue *vq;
 
-	/* check if timer is pending */
 	if (!vtimer_pending(timer))
 		return 0;
-
-	vq = &per_cpu(virt_cpu_timer, timer->cpu);
-	spin_lock_irqsave(&vq->lock, flags);
-
-	/* we don't interrupt a running timer, just let it expire! */
+	spin_lock_irqsave(&virt_timer_lock, flags);
 	list_del_init(&timer->entry);
-
-	spin_unlock_irqrestore(&vq->lock, flags);
+	spin_unlock_irqrestore(&virt_timer_lock, flags);
 	return 1;
 }
 EXPORT_SYMBOL(del_virt_timer);
@@ -458,20 +365,10 @@ EXPORT_SYMBOL(del_virt_timer);
 /*
  * Start the virtual CPU timer on the current CPU.
  */
-void init_cpu_vtimer(void)
+void __cpuinit init_cpu_vtimer(void)
 {
-	struct vtimer_queue *vq;
-
-	/* initialize per cpu vtimer structure */
-	vq = &__get_cpu_var(virt_cpu_timer);
-	INIT_LIST_HEAD(&vq->list);
-	spin_lock_init(&vq->lock);
-
-	/* enable cpu timer interrupts */
-	__ctl_set_bit(0,10);
-
 	/* set initial cpu timer */
-	set_vtimer(0x7fffffffffffffffULL);
+	set_vtimer(VTIMER_MAX_SLICE);
 }
 
 static int __cpuinit s390_nohz_notify(struct notifier_block *self,
@@ -493,12 +390,7 @@ static int __cpuinit s390_nohz_notify(struct notifier_block *self,
 
 void __init vtime_init(void)
 {
-	/* request the cpu timer external interrupt */
-	if (register_external_interrupt(0x1005, do_cpu_timer_interrupt))
-		panic("Couldn't request external interrupt 0x1005");
-
 	/* Enable cpu timer interrupts on the boot cpu. */
 	init_cpu_vtimer();
 	cpu_notifier(s390_nohz_notify, 0);
 }
-