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authorLinus Torvalds <torvalds@linux-foundation.org>2009-03-26 19:04:22 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-03-26 19:04:22 -0400
commit21cdbc1378e8aa96e1ed4a606dce1a8e7daf7fdf (patch)
tree55b6c294b912ccdc3eede15960b0ece53a69d902 /arch
parent86d9c070175de65890794fa227b68297da6206d8 (diff)
parentef3500b2b2955af4fa6b0564b51c0c604e38c571 (diff)
Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (81 commits) [S390] remove duplicated #includes [S390] cpumask: use mm_cpumask() wrapper [S390] cpumask: Use accessors code. [S390] cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits. [S390] cpumask: remove cpu_coregroup_map [S390] fix clock comparator save area usage [S390] Add hwcap flag for the etf3 enhancement facility [S390] Ensure that ipl panic notifier is called late. [S390] fix dfp elf hwcap/facility bit detection [S390] smp: perform initial cpu reset before starting a cpu [S390] smp: fix memory leak on __cpu_up [S390] ipl: Improve checking logic and remove switch defaults. [S390] s390dbf: Remove needless check for NULL pointer. [S390] s390dbf: Remove redundant initilizations. [S390] use kzfree() [S390] BUG to BUG_ON changes [S390] zfcpdump: Prevent zcore from beeing built as a kernel module. [S390] Use csum_partial in checksum.h [S390] cleanup lowcore.h [S390] eliminate ipl_device from lowcore ...
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/Kconfig11
-rw-r--r--arch/s390/crypto/prng.c3
-rw-r--r--arch/s390/include/asm/bitops.h14
-rw-r--r--arch/s390/include/asm/crw.h68
-rw-r--r--arch/s390/include/asm/dasd.h10
-rw-r--r--arch/s390/include/asm/idals.h17
-rw-r--r--arch/s390/include/asm/lowcore.h653
-rw-r--r--arch/s390/include/asm/mmu_context.h2
-rw-r--r--arch/s390/include/asm/nmi.h66
-rw-r--r--arch/s390/include/asm/processor.h16
-rw-r--r--arch/s390/include/asm/ptrace.h4
-rw-r--r--arch/s390/include/asm/qdio.h1
-rw-r--r--arch/s390/include/asm/smp.h7
-rw-r--r--arch/s390/include/asm/string.h16
-rw-r--r--arch/s390/include/asm/sysinfo.h1
-rw-r--r--arch/s390/include/asm/tlbflush.h4
-rw-r--r--arch/s390/include/asm/topology.h1
-rw-r--r--arch/s390/include/asm/vtoc.h16
-rw-r--r--arch/s390/kernel/Makefile4
-rw-r--r--arch/s390/kernel/bitmap.S56
-rw-r--r--arch/s390/kernel/bitmap.c54
-rw-r--r--arch/s390/kernel/compat_ptrace.h3
-rw-r--r--arch/s390/kernel/debug.c9
-rw-r--r--arch/s390/kernel/early.c23
-rw-r--r--arch/s390/kernel/head.S2
-rw-r--r--arch/s390/kernel/head31.S1
-rw-r--r--arch/s390/kernel/head64.S1
-rw-r--r--arch/s390/kernel/ipl.c74
-rw-r--r--arch/s390/kernel/module.c19
-rw-r--r--arch/s390/kernel/nmi.c376
-rw-r--r--arch/s390/kernel/process.c73
-rw-r--r--arch/s390/kernel/processor.c73
-rw-r--r--arch/s390/kernel/reipl64.S11
-rw-r--r--arch/s390/kernel/s390_ksyms.c44
-rw-r--r--arch/s390/kernel/setup.c52
-rw-r--r--arch/s390/kernel/smp.c68
-rw-r--r--arch/s390/kernel/sysinfo.c428
-rw-r--r--arch/s390/kernel/time.c71
-rw-r--r--arch/s390/kernel/topology.c2
-rw-r--r--arch/s390/kernel/traps.c4
-rw-r--r--arch/s390/kernel/vdso.c2
-rw-r--r--arch/s390/kernel/vmlinux.lds.S2
-rw-r--r--arch/s390/kvm/kvm-s390.c6
-rw-r--r--arch/s390/lib/delay.c2
-rw-r--r--arch/s390/lib/string.c8
-rw-r--r--arch/s390/mm/fault.c28
-rw-r--r--arch/s390/mm/init.c2
-rw-r--r--arch/s390/mm/pgtable.c6
48 files changed, 1688 insertions, 726 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 6b0a3538dc63..2a8af5e16345 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -343,13 +343,6 @@ source "mm/Kconfig"
343 343
344comment "I/O subsystem configuration" 344comment "I/O subsystem configuration"
345 345
346config MACHCHK_WARNING
347 bool "Process warning machine checks"
348 help
349 Select this option if you want the machine check handler on IBM S/390 or
350 zSeries to process warning machine checks (e.g. on power failures).
351 If unsure, say "Y".
352
353config QDIO 346config QDIO
354 tristate "QDIO support" 347 tristate "QDIO support"
355 ---help--- 348 ---help---
@@ -521,7 +514,7 @@ config APPLDATA_OS
521 514
522config APPLDATA_NET_SUM 515config APPLDATA_NET_SUM
523 tristate "Monitor overall network statistics" 516 tristate "Monitor overall network statistics"
524 depends on APPLDATA_BASE 517 depends on APPLDATA_BASE && NET
525 help 518 help
526 This provides network related data to the Linux - VM Monitor Stream, 519 This provides network related data to the Linux - VM Monitor Stream,
527 currently there is only a total sum of network I/O statistics, no 520 currently there is only a total sum of network I/O statistics, no
@@ -552,7 +545,7 @@ config KEXEC
552 but is independent of hardware/microcode support. 545 but is independent of hardware/microcode support.
553 546
554config ZFCPDUMP 547config ZFCPDUMP
555 tristate "zfcpdump support" 548 bool "zfcpdump support"
556 select SMP 549 select SMP
557 default n 550 default n
558 help 551 help
diff --git a/arch/s390/crypto/prng.c b/arch/s390/crypto/prng.c
index eca724d229ec..b49c00ce65e9 100644
--- a/arch/s390/crypto/prng.c
+++ b/arch/s390/crypto/prng.c
@@ -201,8 +201,7 @@ out_free:
201static void __exit prng_exit(void) 201static void __exit prng_exit(void)
202{ 202{
203 /* wipe me */ 203 /* wipe me */
204 memset(p->buf, 0, prng_chunk_size); 204 kzfree(p->buf);
205 kfree(p->buf);
206 kfree(p); 205 kfree(p);
207 206
208 misc_deregister(&prng_dev); 207 misc_deregister(&prng_dev);
diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
index 8e9243ae0c19..b30606f6d523 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -57,7 +57,7 @@
57 * with operation of the form "set_bit(bitnr, flags)". 57 * with operation of the form "set_bit(bitnr, flags)".
58 */ 58 */
59 59
60/* bitmap tables from arch/S390/kernel/bitmap.S */ 60/* bitmap tables from arch/s390/kernel/bitmap.c */
61extern const char _oi_bitmap[]; 61extern const char _oi_bitmap[];
62extern const char _ni_bitmap[]; 62extern const char _ni_bitmap[];
63extern const char _zb_findmap[]; 63extern const char _zb_findmap[];
@@ -525,16 +525,16 @@ static inline unsigned long __ffs_word_loop(const unsigned long *addr,
525static inline unsigned long __ffz_word(unsigned long nr, unsigned long word) 525static inline unsigned long __ffz_word(unsigned long nr, unsigned long word)
526{ 526{
527#ifdef __s390x__ 527#ifdef __s390x__
528 if (likely((word & 0xffffffff) == 0xffffffff)) { 528 if ((word & 0xffffffff) == 0xffffffff) {
529 word >>= 32; 529 word >>= 32;
530 nr += 32; 530 nr += 32;
531 } 531 }
532#endif 532#endif
533 if (likely((word & 0xffff) == 0xffff)) { 533 if ((word & 0xffff) == 0xffff) {
534 word >>= 16; 534 word >>= 16;
535 nr += 16; 535 nr += 16;
536 } 536 }
537 if (likely((word & 0xff) == 0xff)) { 537 if ((word & 0xff) == 0xff) {
538 word >>= 8; 538 word >>= 8;
539 nr += 8; 539 nr += 8;
540 } 540 }
@@ -549,16 +549,16 @@ static inline unsigned long __ffz_word(unsigned long nr, unsigned long word)
549static inline unsigned long __ffs_word(unsigned long nr, unsigned long word) 549static inline unsigned long __ffs_word(unsigned long nr, unsigned long word)
550{ 550{
551#ifdef __s390x__ 551#ifdef __s390x__
552 if (likely((word & 0xffffffff) == 0)) { 552 if ((word & 0xffffffff) == 0) {
553 word >>= 32; 553 word >>= 32;
554 nr += 32; 554 nr += 32;
555 } 555 }
556#endif 556#endif
557 if (likely((word & 0xffff) == 0)) { 557 if ((word & 0xffff) == 0) {
558 word >>= 16; 558 word >>= 16;
559 nr += 16; 559 nr += 16;
560 } 560 }
561 if (likely((word & 0xff) == 0)) { 561 if ((word & 0xff) == 0) {
562 word >>= 8; 562 word >>= 8;
563 nr += 8; 563 nr += 8;
564 } 564 }
diff --git a/arch/s390/include/asm/crw.h b/arch/s390/include/asm/crw.h
new file mode 100644
index 000000000000..2185a6d619d3
--- /dev/null
+++ b/arch/s390/include/asm/crw.h
@@ -0,0 +1,68 @@
1/*
2 * Data definitions for channel report processing
3 * Copyright IBM Corp. 2000,2009
4 * Author(s): Ingo Adlung <adlung@de.ibm.com>,
5 * Martin Schwidefsky <schwidefsky@de.ibm.com>,
6 * Cornelia Huck <cornelia.huck@de.ibm.com>,
7 * Heiko Carstens <heiko.carstens@de.ibm.com>,
8 */
9
10#ifndef _ASM_S390_CRW_H
11#define _ASM_S390_CRW_H
12
13#include <linux/types.h>
14
15/*
16 * Channel Report Word
17 */
18struct crw {
19 __u32 res1 : 1; /* reserved zero */
20 __u32 slct : 1; /* solicited */
21 __u32 oflw : 1; /* overflow */
22 __u32 chn : 1; /* chained */
23 __u32 rsc : 4; /* reporting source code */
24 __u32 anc : 1; /* ancillary report */
25 __u32 res2 : 1; /* reserved zero */
26 __u32 erc : 6; /* error-recovery code */
27 __u32 rsid : 16; /* reporting-source ID */
28} __attribute__ ((packed));
29
30typedef void (*crw_handler_t)(struct crw *, struct crw *, int);
31
32extern int crw_register_handler(int rsc, crw_handler_t handler);
33extern void crw_unregister_handler(int rsc);
34extern void crw_handle_channel_report(void);
35
36#define NR_RSCS 16
37
38#define CRW_RSC_MONITOR 0x2 /* monitoring facility */
39#define CRW_RSC_SCH 0x3 /* subchannel */
40#define CRW_RSC_CPATH 0x4 /* channel path */
41#define CRW_RSC_CONFIG 0x9 /* configuration-alert facility */
42#define CRW_RSC_CSS 0xB /* channel subsystem */
43
44#define CRW_ERC_EVENT 0x00 /* event information pending */
45#define CRW_ERC_AVAIL 0x01 /* available */
46#define CRW_ERC_INIT 0x02 /* initialized */
47#define CRW_ERC_TERROR 0x03 /* temporary error */
48#define CRW_ERC_IPARM 0x04 /* installed parm initialized */
49#define CRW_ERC_TERM 0x05 /* terminal */
50#define CRW_ERC_PERRN 0x06 /* perm. error, fac. not init */
51#define CRW_ERC_PERRI 0x07 /* perm. error, facility init */
52#define CRW_ERC_PMOD 0x08 /* installed parameters modified */
53
54static inline int stcrw(struct crw *pcrw)
55{
56 int ccode;
57
58 asm volatile(
59 " stcrw 0(%2)\n"
60 " ipm %0\n"
61 " srl %0,28\n"
62 : "=d" (ccode), "=m" (*pcrw)
63 : "a" (pcrw)
64 : "cc" );
65 return ccode;
66}
67
68#endif /* _ASM_S390_CRW_H */
diff --git a/arch/s390/include/asm/dasd.h b/arch/s390/include/asm/dasd.h
index e2db6f16d9c8..218bce81ec70 100644
--- a/arch/s390/include/asm/dasd.h
+++ b/arch/s390/include/asm/dasd.h
@@ -162,15 +162,15 @@ typedef struct dasd_profile_info_t {
162 unsigned int dasd_io_nr_req[32]; /* histogram of # of requests in chanq */ 162 unsigned int dasd_io_nr_req[32]; /* histogram of # of requests in chanq */
163} dasd_profile_info_t; 163} dasd_profile_info_t;
164 164
165/* 165/*
166 * struct format_data_t 166 * struct format_data_t
167 * represents all data necessary to format a dasd 167 * represents all data necessary to format a dasd
168 */ 168 */
169typedef struct format_data_t { 169typedef struct format_data_t {
170 int start_unit; /* from track */ 170 unsigned int start_unit; /* from track */
171 int stop_unit; /* to track */ 171 unsigned int stop_unit; /* to track */
172 int blksize; /* sectorsize */ 172 unsigned int blksize; /* sectorsize */
173 int intensity; 173 unsigned int intensity;
174} format_data_t; 174} format_data_t;
175 175
176/* 176/*
diff --git a/arch/s390/include/asm/idals.h b/arch/s390/include/asm/idals.h
index e82c10efe65a..aae276d00383 100644
--- a/arch/s390/include/asm/idals.h
+++ b/arch/s390/include/asm/idals.h
@@ -44,24 +44,18 @@ idal_is_needed(void *vaddr, unsigned int length)
44/* 44/*
45 * Return the number of idal words needed for an address/length pair. 45 * Return the number of idal words needed for an address/length pair.
46 */ 46 */
47static inline unsigned int 47static inline unsigned int idal_nr_words(void *vaddr, unsigned int length)
48idal_nr_words(void *vaddr, unsigned int length)
49{ 48{
50#ifdef __s390x__ 49 return ((__pa(vaddr) & (IDA_BLOCK_SIZE-1)) + length +
51 if (idal_is_needed(vaddr, length)) 50 (IDA_BLOCK_SIZE-1)) >> IDA_SIZE_LOG;
52 return ((__pa(vaddr) & (IDA_BLOCK_SIZE-1)) + length +
53 (IDA_BLOCK_SIZE-1)) >> IDA_SIZE_LOG;
54#endif
55 return 0;
56} 51}
57 52
58/* 53/*
59 * Create the list of idal words for an address/length pair. 54 * Create the list of idal words for an address/length pair.
60 */ 55 */
61static inline unsigned long * 56static inline unsigned long *idal_create_words(unsigned long *idaws,
62idal_create_words(unsigned long *idaws, void *vaddr, unsigned int length) 57 void *vaddr, unsigned int length)
63{ 58{
64#ifdef __s390x__
65 unsigned long paddr; 59 unsigned long paddr;
66 unsigned int cidaw; 60 unsigned int cidaw;
67 61
@@ -74,7 +68,6 @@ idal_create_words(unsigned long *idaws, void *vaddr, unsigned int length)
74 paddr += IDA_BLOCK_SIZE; 68 paddr += IDA_BLOCK_SIZE;
75 *idaws++ = paddr; 69 *idaws++ = paddr;
76 } 70 }
77#endif
78 return idaws; 71 return idaws;
79} 72}
80 73
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index f3720defdd16..b349f1c7fdfa 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -11,129 +11,118 @@
11#ifndef _ASM_S390_LOWCORE_H 11#ifndef _ASM_S390_LOWCORE_H
12#define _ASM_S390_LOWCORE_H 12#define _ASM_S390_LOWCORE_H
13 13
14#ifndef __s390x__ 14#define __LC_IPL_PARMBLOCK_PTR 0x0014
15#define __LC_EXT_OLD_PSW 0x018 15#define __LC_EXT_PARAMS 0x0080
16#define __LC_SVC_OLD_PSW 0x020 16#define __LC_CPU_ADDRESS 0x0084
17#define __LC_PGM_OLD_PSW 0x028 17#define __LC_EXT_INT_CODE 0x0086
18#define __LC_MCK_OLD_PSW 0x030
19#define __LC_IO_OLD_PSW 0x038
20#define __LC_EXT_NEW_PSW 0x058
21#define __LC_SVC_NEW_PSW 0x060
22#define __LC_PGM_NEW_PSW 0x068
23#define __LC_MCK_NEW_PSW 0x070
24#define __LC_IO_NEW_PSW 0x078
25#else /* !__s390x__ */
26#define __LC_EXT_OLD_PSW 0x0130
27#define __LC_SVC_OLD_PSW 0x0140
28#define __LC_PGM_OLD_PSW 0x0150
29#define __LC_MCK_OLD_PSW 0x0160
30#define __LC_IO_OLD_PSW 0x0170
31#define __LC_EXT_NEW_PSW 0x01b0
32#define __LC_SVC_NEW_PSW 0x01c0
33#define __LC_PGM_NEW_PSW 0x01d0
34#define __LC_MCK_NEW_PSW 0x01e0
35#define __LC_IO_NEW_PSW 0x01f0
36#endif /* !__s390x__ */
37
38#define __LC_IPL_PARMBLOCK_PTR 0x014
39#define __LC_EXT_PARAMS 0x080
40#define __LC_CPU_ADDRESS 0x084
41#define __LC_EXT_INT_CODE 0x086
42
43#define __LC_SVC_ILC 0x088
44#define __LC_SVC_INT_CODE 0x08A
45#define __LC_PGM_ILC 0x08C
46#define __LC_PGM_INT_CODE 0x08E
47 18
48#define __LC_PER_ATMID 0x096 19#define __LC_SVC_ILC 0x0088
49#define __LC_PER_ADDRESS 0x098 20#define __LC_SVC_INT_CODE 0x008a
50#define __LC_PER_ACCESS_ID 0x0A1 21#define __LC_PGM_ILC 0x008c
51#define __LC_AR_MODE_ID 0x0A3 22#define __LC_PGM_INT_CODE 0x008e
52 23
53#define __LC_SUBCHANNEL_ID 0x0B8 24#define __LC_PER_ATMID 0x0096
54#define __LC_SUBCHANNEL_NR 0x0BA 25#define __LC_PER_ADDRESS 0x0098
55#define __LC_IO_INT_PARM 0x0BC 26#define __LC_PER_ACCESS_ID 0x00a1
56#define __LC_IO_INT_WORD 0x0C0 27#define __LC_AR_MODE_ID 0x00a3
57#define __LC_MCCK_CODE 0x0E8
58 28
59#define __LC_LAST_BREAK 0x110 29#define __LC_SUBCHANNEL_ID 0x00b8
60 30#define __LC_SUBCHANNEL_NR 0x00ba
61#define __LC_RETURN_PSW 0x200 31#define __LC_IO_INT_PARM 0x00bc
62 32#define __LC_IO_INT_WORD 0x00c0
63#define __LC_SAVE_AREA 0xC00 33#define __LC_MCCK_CODE 0x00e8
64
65#ifndef __s390x__
66#define __LC_IRB 0x208
67#define __LC_SYNC_ENTER_TIMER 0x248
68#define __LC_ASYNC_ENTER_TIMER 0x250
69#define __LC_EXIT_TIMER 0x258
70#define __LC_USER_TIMER 0x260
71#define __LC_SYSTEM_TIMER 0x268
72#define __LC_STEAL_TIMER 0x270
73#define __LC_LAST_UPDATE_TIMER 0x278
74#define __LC_LAST_UPDATE_CLOCK 0x280
75#define __LC_RETURN_MCCK_PSW 0x288
76#define __LC_KERNEL_STACK 0xC40
77#define __LC_THREAD_INFO 0xC44
78#define __LC_ASYNC_STACK 0xC48
79#define __LC_KERNEL_ASCE 0xC4C
80#define __LC_USER_ASCE 0xC50
81#define __LC_PANIC_STACK 0xC54
82#define __LC_CPUID 0xC60
83#define __LC_CPUADDR 0xC68
84#define __LC_IPLDEV 0xC7C
85#define __LC_CURRENT 0xC90
86#define __LC_INT_CLOCK 0xC98
87#else /* __s390x__ */
88#define __LC_IRB 0x210
89#define __LC_SYNC_ENTER_TIMER 0x250
90#define __LC_ASYNC_ENTER_TIMER 0x258
91#define __LC_EXIT_TIMER 0x260
92#define __LC_USER_TIMER 0x268
93#define __LC_SYSTEM_TIMER 0x270
94#define __LC_STEAL_TIMER 0x278
95#define __LC_LAST_UPDATE_TIMER 0x280
96#define __LC_LAST_UPDATE_CLOCK 0x288
97#define __LC_RETURN_MCCK_PSW 0x290
98#define __LC_KERNEL_STACK 0xD40
99#define __LC_THREAD_INFO 0xD48
100#define __LC_ASYNC_STACK 0xD50
101#define __LC_KERNEL_ASCE 0xD58
102#define __LC_USER_ASCE 0xD60
103#define __LC_PANIC_STACK 0xD68
104#define __LC_CPUID 0xD80
105#define __LC_CPUADDR 0xD88
106#define __LC_IPLDEV 0xDB8
107#define __LC_CURRENT 0xDD8
108#define __LC_INT_CLOCK 0xDE8
109#define __LC_VDSO_PER_CPU 0xE38
110#endif /* __s390x__ */
111 34
112#define __LC_PASTE 0xE40 35#define __LC_DUMP_REIPL 0x0e00
113 36
114#define __LC_PANIC_MAGIC 0xE00
115#ifndef __s390x__ 37#ifndef __s390x__
116#define __LC_PFAULT_INTPARM 0x080 38#define __LC_EXT_OLD_PSW 0x0018
117#define __LC_CPU_TIMER_SAVE_AREA 0x0D8 39#define __LC_SVC_OLD_PSW 0x0020
118#define __LC_CLOCK_COMP_SAVE_AREA 0x0E0 40#define __LC_PGM_OLD_PSW 0x0028
119#define __LC_PSW_SAVE_AREA 0x100 41#define __LC_MCK_OLD_PSW 0x0030
120#define __LC_PREFIX_SAVE_AREA 0x108 42#define __LC_IO_OLD_PSW 0x0038
121#define __LC_AREGS_SAVE_AREA 0x120 43#define __LC_EXT_NEW_PSW 0x0058
122#define __LC_FPREGS_SAVE_AREA 0x160 44#define __LC_SVC_NEW_PSW 0x0060
123#define __LC_GPREGS_SAVE_AREA 0x180 45#define __LC_PGM_NEW_PSW 0x0068
124#define __LC_CREGS_SAVE_AREA 0x1C0 46#define __LC_MCK_NEW_PSW 0x0070
47#define __LC_IO_NEW_PSW 0x0078
48#define __LC_SAVE_AREA 0x0200
49#define __LC_RETURN_PSW 0x0240
50#define __LC_RETURN_MCCK_PSW 0x0248
51#define __LC_SYNC_ENTER_TIMER 0x0250
52#define __LC_ASYNC_ENTER_TIMER 0x0258
53#define __LC_EXIT_TIMER 0x0260
54#define __LC_USER_TIMER 0x0268
55#define __LC_SYSTEM_TIMER 0x0270
56#define __LC_STEAL_TIMER 0x0278
57#define __LC_LAST_UPDATE_TIMER 0x0280
58#define __LC_LAST_UPDATE_CLOCK 0x0288
59#define __LC_CURRENT 0x0290
60#define __LC_THREAD_INFO 0x0294
61#define __LC_KERNEL_STACK 0x0298
62#define __LC_ASYNC_STACK 0x029c
63#define __LC_PANIC_STACK 0x02a0
64#define __LC_KERNEL_ASCE 0x02a4
65#define __LC_USER_ASCE 0x02a8
66#define __LC_USER_EXEC_ASCE 0x02ac
67#define __LC_CPUID 0x02b0
68#define __LC_INT_CLOCK 0x02c8
69#define __LC_IRB 0x0300
70#define __LC_PFAULT_INTPARM 0x0080
71#define __LC_CPU_TIMER_SAVE_AREA 0x00d8
72#define __LC_CLOCK_COMP_SAVE_AREA 0x00e0
73#define __LC_PSW_SAVE_AREA 0x0100
74#define __LC_PREFIX_SAVE_AREA 0x0108
75#define __LC_AREGS_SAVE_AREA 0x0120
76#define __LC_FPREGS_SAVE_AREA 0x0160
77#define __LC_GPREGS_SAVE_AREA 0x0180
78#define __LC_CREGS_SAVE_AREA 0x01c0
125#else /* __s390x__ */ 79#else /* __s390x__ */
126#define __LC_PFAULT_INTPARM 0x11B8 80#define __LC_LAST_BREAK 0x0110
81#define __LC_EXT_OLD_PSW 0x0130
82#define __LC_SVC_OLD_PSW 0x0140
83#define __LC_PGM_OLD_PSW 0x0150
84#define __LC_MCK_OLD_PSW 0x0160
85#define __LC_IO_OLD_PSW 0x0170
86#define __LC_EXT_NEW_PSW 0x01b0
87#define __LC_SVC_NEW_PSW 0x01c0
88#define __LC_PGM_NEW_PSW 0x01d0
89#define __LC_MCK_NEW_PSW 0x01e0
90#define __LC_IO_NEW_PSW 0x01f0
91#define __LC_SAVE_AREA 0x0200
92#define __LC_RETURN_PSW 0x0280
93#define __LC_RETURN_MCCK_PSW 0x0290
94#define __LC_SYNC_ENTER_TIMER 0x02a0
95#define __LC_ASYNC_ENTER_TIMER 0x02a8
96#define __LC_EXIT_TIMER 0x02b0
97#define __LC_USER_TIMER 0x02b8
98#define __LC_SYSTEM_TIMER 0x02c0
99#define __LC_STEAL_TIMER 0x02c8
100#define __LC_LAST_UPDATE_TIMER 0x02d0
101#define __LC_LAST_UPDATE_CLOCK 0x02d8
102#define __LC_CURRENT 0x02e0
103#define __LC_THREAD_INFO 0x02e8
104#define __LC_KERNEL_STACK 0x02f0
105#define __LC_ASYNC_STACK 0x02f8
106#define __LC_PANIC_STACK 0x0300
107#define __LC_KERNEL_ASCE 0x0308
108#define __LC_USER_ASCE 0x0310
109#define __LC_USER_EXEC_ASCE 0x0318
110#define __LC_CPUID 0x0320
111#define __LC_INT_CLOCK 0x0340
112#define __LC_VDSO_PER_CPU 0x0350
113#define __LC_IRB 0x0380
114#define __LC_PASTE 0x03c0
115#define __LC_PFAULT_INTPARM 0x11b8
127#define __LC_FPREGS_SAVE_AREA 0x1200 116#define __LC_FPREGS_SAVE_AREA 0x1200
128#define __LC_GPREGS_SAVE_AREA 0x1280 117#define __LC_GPREGS_SAVE_AREA 0x1280
129#define __LC_PSW_SAVE_AREA 0x1300 118#define __LC_PSW_SAVE_AREA 0x1300
130#define __LC_PREFIX_SAVE_AREA 0x1318 119#define __LC_PREFIX_SAVE_AREA 0x1318
131#define __LC_FP_CREG_SAVE_AREA 0x131C 120#define __LC_FP_CREG_SAVE_AREA 0x131c
132#define __LC_TODREG_SAVE_AREA 0x1324 121#define __LC_TODREG_SAVE_AREA 0x1324
133#define __LC_CPU_TIMER_SAVE_AREA 0x1328 122#define __LC_CPU_TIMER_SAVE_AREA 0x1328
134#define __LC_CLOCK_COMP_SAVE_AREA 0x1331 123#define __LC_CLOCK_COMP_SAVE_AREA 0x1331
135#define __LC_AREGS_SAVE_AREA 0x1340 124#define __LC_AREGS_SAVE_AREA 0x1340
136#define __LC_CREGS_SAVE_AREA 0x1380 125#define __LC_CREGS_SAVE_AREA 0x1380
137#endif /* __s390x__ */ 126#endif /* __s390x__ */
138 127
139#ifndef __ASSEMBLY__ 128#ifndef __ASSEMBLY__
@@ -198,222 +187,240 @@ union save_area {
198struct _lowcore 187struct _lowcore
199{ 188{
200#ifndef __s390x__ 189#ifndef __s390x__
201 /* prefix area: defined by architecture */ 190 /* 0x0000 - 0x01ff: defined by architecture */
202 psw_t restart_psw; /* 0x000 */ 191 psw_t restart_psw; /* 0x0000 */
203 __u32 ccw2[4]; /* 0x008 */ 192 __u32 ccw2[4]; /* 0x0008 */
204 psw_t external_old_psw; /* 0x018 */ 193 psw_t external_old_psw; /* 0x0018 */
205 psw_t svc_old_psw; /* 0x020 */ 194 psw_t svc_old_psw; /* 0x0020 */
206 psw_t program_old_psw; /* 0x028 */ 195 psw_t program_old_psw; /* 0x0028 */
207 psw_t mcck_old_psw; /* 0x030 */ 196 psw_t mcck_old_psw; /* 0x0030 */
208 psw_t io_old_psw; /* 0x038 */ 197 psw_t io_old_psw; /* 0x0038 */
209 __u8 pad1[0x58-0x40]; /* 0x040 */ 198 __u8 pad_0x0040[0x0058-0x0040]; /* 0x0040 */
210 psw_t external_new_psw; /* 0x058 */ 199 psw_t external_new_psw; /* 0x0058 */
211 psw_t svc_new_psw; /* 0x060 */ 200 psw_t svc_new_psw; /* 0x0060 */
212 psw_t program_new_psw; /* 0x068 */ 201 psw_t program_new_psw; /* 0x0068 */
213 psw_t mcck_new_psw; /* 0x070 */ 202 psw_t mcck_new_psw; /* 0x0070 */
214 psw_t io_new_psw; /* 0x078 */ 203 psw_t io_new_psw; /* 0x0078 */
215 __u32 ext_params; /* 0x080 */ 204 __u32 ext_params; /* 0x0080 */
216 __u16 cpu_addr; /* 0x084 */ 205 __u16 cpu_addr; /* 0x0084 */
217 __u16 ext_int_code; /* 0x086 */ 206 __u16 ext_int_code; /* 0x0086 */
218 __u16 svc_ilc; /* 0x088 */ 207 __u16 svc_ilc; /* 0x0088 */
219 __u16 svc_code; /* 0x08a */ 208 __u16 svc_code; /* 0x008a */
220 __u16 pgm_ilc; /* 0x08c */ 209 __u16 pgm_ilc; /* 0x008c */
221 __u16 pgm_code; /* 0x08e */ 210 __u16 pgm_code; /* 0x008e */
222 __u32 trans_exc_code; /* 0x090 */ 211 __u32 trans_exc_code; /* 0x0090 */
223 __u16 mon_class_num; /* 0x094 */ 212 __u16 mon_class_num; /* 0x0094 */
224 __u16 per_perc_atmid; /* 0x096 */ 213 __u16 per_perc_atmid; /* 0x0096 */
225 __u32 per_address; /* 0x098 */ 214 __u32 per_address; /* 0x0098 */
226 __u32 monitor_code; /* 0x09c */ 215 __u32 monitor_code; /* 0x009c */
227 __u8 exc_access_id; /* 0x0a0 */ 216 __u8 exc_access_id; /* 0x00a0 */
228 __u8 per_access_id; /* 0x0a1 */ 217 __u8 per_access_id; /* 0x00a1 */
229 __u8 pad2[0xB8-0xA2]; /* 0x0a2 */ 218 __u8 pad_0x00a2[0x00b8-0x00a2]; /* 0x00a2 */
230 __u16 subchannel_id; /* 0x0b8 */ 219 __u16 subchannel_id; /* 0x00b8 */
231 __u16 subchannel_nr; /* 0x0ba */ 220 __u16 subchannel_nr; /* 0x00ba */
232 __u32 io_int_parm; /* 0x0bc */ 221 __u32 io_int_parm; /* 0x00bc */
233 __u32 io_int_word; /* 0x0c0 */ 222 __u32 io_int_word; /* 0x00c0 */
234 __u8 pad3[0xc8-0xc4]; /* 0x0c4 */ 223 __u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */
235 __u32 stfl_fac_list; /* 0x0c8 */ 224 __u32 stfl_fac_list; /* 0x00c8 */
236 __u8 pad4[0xd4-0xcc]; /* 0x0cc */ 225 __u8 pad_0x00cc[0x00d4-0x00cc]; /* 0x00cc */
237 __u32 extended_save_area_addr; /* 0x0d4 */ 226 __u32 extended_save_area_addr; /* 0x00d4 */
238 __u32 cpu_timer_save_area[2]; /* 0x0d8 */ 227 __u32 cpu_timer_save_area[2]; /* 0x00d8 */
239 __u32 clock_comp_save_area[2]; /* 0x0e0 */ 228 __u32 clock_comp_save_area[2]; /* 0x00e0 */
240 __u32 mcck_interruption_code[2]; /* 0x0e8 */ 229 __u32 mcck_interruption_code[2]; /* 0x00e8 */
241 __u8 pad5[0xf4-0xf0]; /* 0x0f0 */ 230 __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */
242 __u32 external_damage_code; /* 0x0f4 */ 231 __u32 external_damage_code; /* 0x00f4 */
243 __u32 failing_storage_address; /* 0x0f8 */ 232 __u32 failing_storage_address; /* 0x00f8 */
244 __u8 pad6[0x100-0xfc]; /* 0x0fc */ 233 __u8 pad_0x00fc[0x0100-0x00fc]; /* 0x00fc */
245 __u32 st_status_fixed_logout[4];/* 0x100 */ 234 __u32 st_status_fixed_logout[4]; /* 0x0100 */
246 __u8 pad7[0x120-0x110]; /* 0x110 */ 235 __u8 pad_0x0110[0x0120-0x0110]; /* 0x0110 */
247 __u32 access_regs_save_area[16];/* 0x120 */ 236
248 __u32 floating_pt_save_area[8]; /* 0x160 */ 237 /* CPU register save area: defined by architecture */
249 __u32 gpregs_save_area[16]; /* 0x180 */ 238 __u32 access_regs_save_area[16]; /* 0x0120 */
250 __u32 cregs_save_area[16]; /* 0x1c0 */ 239 __u32 floating_pt_save_area[8]; /* 0x0160 */
251 240 __u32 gpregs_save_area[16]; /* 0x0180 */
252 psw_t return_psw; /* 0x200 */ 241 __u32 cregs_save_area[16]; /* 0x01c0 */
253 __u8 irb[64]; /* 0x208 */ 242
254 __u64 sync_enter_timer; /* 0x248 */ 243 /* Return psws. */
255 __u64 async_enter_timer; /* 0x250 */ 244 __u32 save_area[16]; /* 0x0200 */
256 __u64 exit_timer; /* 0x258 */ 245 psw_t return_psw; /* 0x0240 */
257 __u64 user_timer; /* 0x260 */ 246 psw_t return_mcck_psw; /* 0x0248 */
258 __u64 system_timer; /* 0x268 */ 247
259 __u64 steal_timer; /* 0x270 */ 248 /* CPU time accounting values */
260 __u64 last_update_timer; /* 0x278 */ 249 __u64 sync_enter_timer; /* 0x0250 */
261 __u64 last_update_clock; /* 0x280 */ 250 __u64 async_enter_timer; /* 0x0258 */
262 psw_t return_mcck_psw; /* 0x288 */ 251 __u64 exit_timer; /* 0x0260 */
263 __u8 pad8[0xc00-0x290]; /* 0x290 */ 252 __u64 user_timer; /* 0x0268 */
264 253 __u64 system_timer; /* 0x0270 */
265 /* System info area */ 254 __u64 steal_timer; /* 0x0278 */
266 __u32 save_area[16]; /* 0xc00 */ 255 __u64 last_update_timer; /* 0x0280 */
267 __u32 kernel_stack; /* 0xc40 */ 256 __u64 last_update_clock; /* 0x0288 */
268 __u32 thread_info; /* 0xc44 */ 257
269 __u32 async_stack; /* 0xc48 */ 258 /* Current process. */
270 __u32 kernel_asce; /* 0xc4c */ 259 __u32 current_task; /* 0x0290 */
271 __u32 user_asce; /* 0xc50 */ 260 __u32 thread_info; /* 0x0294 */
272 __u32 panic_stack; /* 0xc54 */ 261 __u32 kernel_stack; /* 0x0298 */
273 __u32 user_exec_asce; /* 0xc58 */ 262
274 __u8 pad10[0xc60-0xc5c]; /* 0xc5c */ 263 /* Interrupt and panic stack. */
275 /* entry.S sensitive area start */ 264 __u32 async_stack; /* 0x029c */
276 struct cpuinfo_S390 cpu_data; /* 0xc60 */ 265 __u32 panic_stack; /* 0x02a0 */
277 __u32 ipl_device; /* 0xc7c */ 266
278 /* entry.S sensitive area end */ 267 /* Address space pointer. */
279 268 __u32 kernel_asce; /* 0x02a4 */
280 /* SMP info area: defined by DJB */ 269 __u32 user_asce; /* 0x02a8 */
281 __u64 clock_comparator; /* 0xc80 */ 270 __u32 user_exec_asce; /* 0x02ac */
282 __u32 ext_call_fast; /* 0xc88 */ 271
283 __u32 percpu_offset; /* 0xc8c */ 272 /* SMP info area */
284 __u32 current_task; /* 0xc90 */ 273 cpuid_t cpu_id; /* 0x02b0 */
285 __u32 softirq_pending; /* 0xc94 */ 274 __u32 cpu_nr; /* 0x02b8 */
286 __u64 int_clock; /* 0xc98 */ 275 __u32 softirq_pending; /* 0x02bc */
287 __u8 pad11[0xe00-0xca0]; /* 0xca0 */ 276 __u32 percpu_offset; /* 0x02c0 */
288 277 __u32 ext_call_fast; /* 0x02c4 */
289 /* 0xe00 is used as indicator for dump tools */ 278 __u64 int_clock; /* 0x02c8 */
290 /* whether the kernel died with panic() or not */ 279 __u64 clock_comparator; /* 0x02d0 */
291 __u32 panic_magic; /* 0xe00 */ 280 __u8 pad_0x02d8[0x0300-0x02d8]; /* 0x02d8 */
292 281
293 /* Align to the top 1k of prefix area */ 282 /* Interrupt response block */
294 __u8 pad12[0x1000-0xe04]; /* 0xe04 */ 283 __u8 irb[64]; /* 0x0300 */
284
285 __u8 pad_0x0400[0x0e00-0x0400]; /* 0x0400 */
286
287 /*
288 * 0xe00 contains the address of the IPL Parameter Information
289 * block. Dump tools need IPIB for IPL after dump.
290 * Note: do not change the position of any fields in 0x0e00-0x0f00
291 */
292 __u32 ipib; /* 0x0e00 */
293 __u32 ipib_checksum; /* 0x0e04 */
294
295 /* Align to the top 1k of prefix area */
296 __u8 pad_0x0e08[0x1000-0x0e08]; /* 0x0e08 */
295#else /* !__s390x__ */ 297#else /* !__s390x__ */
296 /* prefix area: defined by architecture */ 298 /* 0x0000 - 0x01ff: defined by architecture */
297 __u32 ccw1[2]; /* 0x000 */ 299 __u32 ccw1[2]; /* 0x0000 */
298 __u32 ccw2[4]; /* 0x008 */ 300 __u32 ccw2[4]; /* 0x0008 */
299 __u8 pad1[0x80-0x18]; /* 0x018 */ 301 __u8 pad_0x0018[0x0080-0x0018]; /* 0x0018 */
300 __u32 ext_params; /* 0x080 */ 302 __u32 ext_params; /* 0x0080 */
301 __u16 cpu_addr; /* 0x084 */ 303 __u16 cpu_addr; /* 0x0084 */
302 __u16 ext_int_code; /* 0x086 */ 304 __u16 ext_int_code; /* 0x0086 */
303 __u16 svc_ilc; /* 0x088 */ 305 __u16 svc_ilc; /* 0x0088 */
304 __u16 svc_code; /* 0x08a */ 306 __u16 svc_code; /* 0x008a */
305 __u16 pgm_ilc; /* 0x08c */ 307 __u16 pgm_ilc; /* 0x008c */
306 __u16 pgm_code; /* 0x08e */ 308 __u16 pgm_code; /* 0x008e */
307 __u32 data_exc_code; /* 0x090 */ 309 __u32 data_exc_code; /* 0x0090 */
308 __u16 mon_class_num; /* 0x094 */ 310 __u16 mon_class_num; /* 0x0094 */
309 __u16 per_perc_atmid; /* 0x096 */ 311 __u16 per_perc_atmid; /* 0x0096 */
310 addr_t per_address; /* 0x098 */ 312 addr_t per_address; /* 0x0098 */
311 __u8 exc_access_id; /* 0x0a0 */ 313 __u8 exc_access_id; /* 0x00a0 */
312 __u8 per_access_id; /* 0x0a1 */ 314 __u8 per_access_id; /* 0x00a1 */
313 __u8 op_access_id; /* 0x0a2 */ 315 __u8 op_access_id; /* 0x00a2 */
314 __u8 ar_access_id; /* 0x0a3 */ 316 __u8 ar_access_id; /* 0x00a3 */
315 __u8 pad2[0xA8-0xA4]; /* 0x0a4 */ 317 __u8 pad_0x00a4[0x00a8-0x00a4]; /* 0x00a4 */
316 addr_t trans_exc_code; /* 0x0A0 */ 318 addr_t trans_exc_code; /* 0x00a8 */
317 addr_t monitor_code; /* 0x09c */ 319 addr_t monitor_code; /* 0x00b0 */
318 __u16 subchannel_id; /* 0x0b8 */ 320 __u16 subchannel_id; /* 0x00b8 */
319 __u16 subchannel_nr; /* 0x0ba */ 321 __u16 subchannel_nr; /* 0x00ba */
320 __u32 io_int_parm; /* 0x0bc */ 322 __u32 io_int_parm; /* 0x00bc */
321 __u32 io_int_word; /* 0x0c0 */ 323 __u32 io_int_word; /* 0x00c0 */
322 __u8 pad3[0xc8-0xc4]; /* 0x0c4 */ 324 __u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */
323 __u32 stfl_fac_list; /* 0x0c8 */ 325 __u32 stfl_fac_list; /* 0x00c8 */
324 __u8 pad4[0xe8-0xcc]; /* 0x0cc */ 326 __u8 pad_0x00cc[0x00e8-0x00cc]; /* 0x00cc */
325 __u32 mcck_interruption_code[2]; /* 0x0e8 */ 327 __u32 mcck_interruption_code[2]; /* 0x00e8 */
326 __u8 pad5[0xf4-0xf0]; /* 0x0f0 */ 328 __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */
327 __u32 external_damage_code; /* 0x0f4 */ 329 __u32 external_damage_code; /* 0x00f4 */
328 addr_t failing_storage_address; /* 0x0f8 */ 330 addr_t failing_storage_address; /* 0x00f8 */
329 __u8 pad6[0x120-0x100]; /* 0x100 */ 331 __u8 pad_0x0100[0x0120-0x0100]; /* 0x0100 */
330 psw_t restart_old_psw; /* 0x120 */ 332 psw_t restart_old_psw; /* 0x0120 */
331 psw_t external_old_psw; /* 0x130 */ 333 psw_t external_old_psw; /* 0x0130 */
332 psw_t svc_old_psw; /* 0x140 */ 334 psw_t svc_old_psw; /* 0x0140 */
333 psw_t program_old_psw; /* 0x150 */ 335 psw_t program_old_psw; /* 0x0150 */
334 psw_t mcck_old_psw; /* 0x160 */ 336 psw_t mcck_old_psw; /* 0x0160 */
335 psw_t io_old_psw; /* 0x170 */ 337 psw_t io_old_psw; /* 0x0170 */
336 __u8 pad7[0x1a0-0x180]; /* 0x180 */ 338 __u8 pad_0x0180[0x01a0-0x0180]; /* 0x0180 */
337 psw_t restart_psw; /* 0x1a0 */ 339 psw_t restart_psw; /* 0x01a0 */
338 psw_t external_new_psw; /* 0x1b0 */ 340 psw_t external_new_psw; /* 0x01b0 */
339 psw_t svc_new_psw; /* 0x1c0 */ 341 psw_t svc_new_psw; /* 0x01c0 */
340 psw_t program_new_psw; /* 0x1d0 */ 342 psw_t program_new_psw; /* 0x01d0 */
341 psw_t mcck_new_psw; /* 0x1e0 */ 343 psw_t mcck_new_psw; /* 0x01e0 */
342 psw_t io_new_psw; /* 0x1f0 */ 344 psw_t io_new_psw; /* 0x01f0 */
343 psw_t return_psw; /* 0x200 */ 345
344 __u8 irb[64]; /* 0x210 */ 346 /* Entry/exit save area & return psws. */
345 __u64 sync_enter_timer; /* 0x250 */ 347 __u64 save_area[16]; /* 0x0200 */
346 __u64 async_enter_timer; /* 0x258 */ 348 psw_t return_psw; /* 0x0280 */
347 __u64 exit_timer; /* 0x260 */ 349 psw_t return_mcck_psw; /* 0x0290 */
348 __u64 user_timer; /* 0x268 */ 350
349 __u64 system_timer; /* 0x270 */ 351 /* CPU accounting and timing values. */
350 __u64 steal_timer; /* 0x278 */ 352 __u64 sync_enter_timer; /* 0x02a0 */
351 __u64 last_update_timer; /* 0x280 */ 353 __u64 async_enter_timer; /* 0x02a8 */
352 __u64 last_update_clock; /* 0x288 */ 354 __u64 exit_timer; /* 0x02b0 */
353 psw_t return_mcck_psw; /* 0x290 */ 355 __u64 user_timer; /* 0x02b8 */
354 __u8 pad8[0xc00-0x2a0]; /* 0x2a0 */ 356 __u64 system_timer; /* 0x02c0 */
355 /* System info area */ 357 __u64 steal_timer; /* 0x02c8 */
356 __u64 save_area[16]; /* 0xc00 */ 358 __u64 last_update_timer; /* 0x02d0 */
357 __u8 pad9[0xd40-0xc80]; /* 0xc80 */ 359 __u64 last_update_clock; /* 0x02d8 */
358 __u64 kernel_stack; /* 0xd40 */ 360
359 __u64 thread_info; /* 0xd48 */ 361 /* Current process. */
360 __u64 async_stack; /* 0xd50 */ 362 __u64 current_task; /* 0x02e0 */
361 __u64 kernel_asce; /* 0xd58 */ 363 __u64 thread_info; /* 0x02e8 */
362 __u64 user_asce; /* 0xd60 */ 364 __u64 kernel_stack; /* 0x02f0 */
363 __u64 panic_stack; /* 0xd68 */ 365
364 __u64 user_exec_asce; /* 0xd70 */ 366 /* Interrupt and panic stack. */
365 __u8 pad10[0xd80-0xd78]; /* 0xd78 */ 367 __u64 async_stack; /* 0x02f8 */
366 /* entry.S sensitive area start */ 368 __u64 panic_stack; /* 0x0300 */
367 struct cpuinfo_S390 cpu_data; /* 0xd80 */ 369
368 __u32 ipl_device; /* 0xdb8 */ 370 /* Address space pointer. */
369 __u32 pad11; /* 0xdbc */ 371 __u64 kernel_asce; /* 0x0308 */
370 /* entry.S sensitive area end */ 372 __u64 user_asce; /* 0x0310 */
371 373 __u64 user_exec_asce; /* 0x0318 */
372 /* SMP info area: defined by DJB */ 374
373 __u64 clock_comparator; /* 0xdc0 */ 375 /* SMP info area */
374 __u64 ext_call_fast; /* 0xdc8 */ 376 cpuid_t cpu_id; /* 0x0320 */
375 __u64 percpu_offset; /* 0xdd0 */ 377 __u32 cpu_nr; /* 0x0328 */
376 __u64 current_task; /* 0xdd8 */ 378 __u32 softirq_pending; /* 0x032c */
377 __u32 softirq_pending; /* 0xde0 */ 379 __u64 percpu_offset; /* 0x0330 */
378 __u32 pad_0x0de4; /* 0xde4 */ 380 __u64 ext_call_fast; /* 0x0338 */
379 __u64 int_clock; /* 0xde8 */ 381 __u64 int_clock; /* 0x0340 */
380 __u8 pad12[0xe00-0xdf0]; /* 0xdf0 */ 382 __u64 clock_comparator; /* 0x0348 */
381 383 __u64 vdso_per_cpu_data; /* 0x0350 */
382 /* 0xe00 is used as indicator for dump tools */ 384 __u8 pad_0x0358[0x0380-0x0358]; /* 0x0358 */
383 /* whether the kernel died with panic() or not */ 385
384 __u32 panic_magic; /* 0xe00 */ 386 /* Interrupt response block. */
387 __u8 irb[64]; /* 0x0380 */
385 388
386 /* Per cpu primary space access list */ 389 /* Per cpu primary space access list */
387 __u8 pad_0xe04[0xe38-0xe04]; /* 0xe04 */ 390 __u32 paste[16]; /* 0x03c0 */
388 __u64 vdso_per_cpu_data; /* 0xe38 */ 391
389 __u32 paste[16]; /* 0xe40 */ 392 __u8 pad_0x0400[0x0e00-0x0400]; /* 0x0400 */
390 393
391 __u8 pad13[0x11b8-0xe80]; /* 0xe80 */ 394 /*
392 395 * 0xe00 contains the address of the IPL Parameter Information
393 /* 64 bit extparam used for pfault, diag 250 etc */ 396 * block. Dump tools need IPIB for IPL after dump.
394 __u64 ext_params2; /* 0x11B8 */ 397 * Note: do not change the position of any fields in 0x0e00-0x0f00
395 398 */
396 __u8 pad14[0x1200-0x11C0]; /* 0x11C0 */ 399 __u64 ipib; /* 0x0e00 */
397 400 __u32 ipib_checksum; /* 0x0e08 */
398 /* System info area */ 401 __u8 pad_0x0e0c[0x11b8-0x0e0c]; /* 0x0e0c */
399 402
400 __u64 floating_pt_save_area[16]; /* 0x1200 */ 403 /* 64 bit extparam used for pfault/diag 250: defined by architecture */
401 __u64 gpregs_save_area[16]; /* 0x1280 */ 404 __u64 ext_params2; /* 0x11B8 */
402 __u32 st_status_fixed_logout[4]; /* 0x1300 */ 405 __u8 pad_0x11c0[0x1200-0x11C0]; /* 0x11C0 */
403 __u8 pad15[0x1318-0x1310]; /* 0x1310 */ 406
404 __u32 prefixreg_save_area; /* 0x1318 */ 407 /* CPU register save area: defined by architecture */
405 __u32 fpt_creg_save_area; /* 0x131c */ 408 __u64 floating_pt_save_area[16]; /* 0x1200 */
406 __u8 pad16[0x1324-0x1320]; /* 0x1320 */ 409 __u64 gpregs_save_area[16]; /* 0x1280 */
407 __u32 tod_progreg_save_area; /* 0x1324 */ 410 __u32 st_status_fixed_logout[4]; /* 0x1300 */
408 __u32 cpu_timer_save_area[2]; /* 0x1328 */ 411 __u8 pad_0x1310[0x1318-0x1310]; /* 0x1310 */
409 __u32 clock_comp_save_area[2]; /* 0x1330 */ 412 __u32 prefixreg_save_area; /* 0x1318 */
410 __u8 pad17[0x1340-0x1338]; /* 0x1338 */ 413 __u32 fpt_creg_save_area; /* 0x131c */
411 __u32 access_regs_save_area[16]; /* 0x1340 */ 414 __u8 pad_0x1320[0x1324-0x1320]; /* 0x1320 */
412 __u64 cregs_save_area[16]; /* 0x1380 */ 415 __u32 tod_progreg_save_area; /* 0x1324 */
416 __u32 cpu_timer_save_area[2]; /* 0x1328 */
417 __u32 clock_comp_save_area[2]; /* 0x1330 */
418 __u8 pad_0x1338[0x1340-0x1338]; /* 0x1338 */
419 __u32 access_regs_save_area[16]; /* 0x1340 */
420 __u64 cregs_save_area[16]; /* 0x1380 */
413 421
414 /* align to the top of the prefix area */ 422 /* align to the top of the prefix area */
415 423 __u8 pad_0x1400[0x2000-0x1400]; /* 0x1400 */
416 __u8 pad18[0x2000-0x1400]; /* 0x1400 */
417#endif /* !__s390x__ */ 424#endif /* !__s390x__ */
418} __attribute__((packed)); /* End structure*/ 425} __attribute__((packed)); /* End structure*/
419 426
@@ -433,8 +440,6 @@ static inline __u32 store_prefix(void)
433 return address; 440 return address;
434} 441}
435 442
436#define __PANIC_MAGIC 0xDEADC0DE
437
438#endif 443#endif
439 444
440#endif 445#endif
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index 28ec870655af..fc7edd6f41b6 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -74,7 +74,7 @@ static inline void update_mm(struct mm_struct *mm, struct task_struct *tsk)
74static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, 74static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
75 struct task_struct *tsk) 75 struct task_struct *tsk)
76{ 76{
77 cpu_set(smp_processor_id(), next->cpu_vm_mask); 77 cpumask_set_cpu(smp_processor_id(), mm_cpumask(next));
78 update_mm(next, tsk); 78 update_mm(next, tsk);
79} 79}
80 80
diff --git a/arch/s390/include/asm/nmi.h b/arch/s390/include/asm/nmi.h
new file mode 100644
index 000000000000..f4b60441adca
--- /dev/null
+++ b/arch/s390/include/asm/nmi.h
@@ -0,0 +1,66 @@
1/*
2 * Machine check handler definitions
3 *
4 * Copyright IBM Corp. 2000,2009
5 * Author(s): Ingo Adlung <adlung@de.ibm.com>,
6 * Martin Schwidefsky <schwidefsky@de.ibm.com>,
7 * Cornelia Huck <cornelia.huck@de.ibm.com>,
8 * Heiko Carstens <heiko.carstens@de.ibm.com>,
9 */
10
11#ifndef _ASM_S390_NMI_H
12#define _ASM_S390_NMI_H
13
14#include <linux/types.h>
15
16struct mci {
17 __u32 sd : 1; /* 00 system damage */
18 __u32 pd : 1; /* 01 instruction-processing damage */
19 __u32 sr : 1; /* 02 system recovery */
20 __u32 : 1; /* 03 */
21 __u32 cd : 1; /* 04 timing-facility damage */
22 __u32 ed : 1; /* 05 external damage */
23 __u32 : 1; /* 06 */
24 __u32 dg : 1; /* 07 degradation */
25 __u32 w : 1; /* 08 warning pending */
26 __u32 cp : 1; /* 09 channel-report pending */
27 __u32 sp : 1; /* 10 service-processor damage */
28 __u32 ck : 1; /* 11 channel-subsystem damage */
29 __u32 : 2; /* 12-13 */
30 __u32 b : 1; /* 14 backed up */
31 __u32 : 1; /* 15 */
32 __u32 se : 1; /* 16 storage error uncorrected */
33 __u32 sc : 1; /* 17 storage error corrected */
34 __u32 ke : 1; /* 18 storage-key error uncorrected */
35 __u32 ds : 1; /* 19 storage degradation */
36 __u32 wp : 1; /* 20 psw mwp validity */
37 __u32 ms : 1; /* 21 psw mask and key validity */
38 __u32 pm : 1; /* 22 psw program mask and cc validity */
39 __u32 ia : 1; /* 23 psw instruction address validity */
40 __u32 fa : 1; /* 24 failing storage address validity */
41 __u32 : 1; /* 25 */
42 __u32 ec : 1; /* 26 external damage code validity */
43 __u32 fp : 1; /* 27 floating point register validity */
44 __u32 gr : 1; /* 28 general register validity */
45 __u32 cr : 1; /* 29 control register validity */
46 __u32 : 1; /* 30 */
47 __u32 st : 1; /* 31 storage logical validity */
48 __u32 ie : 1; /* 32 indirect storage error */
49 __u32 ar : 1; /* 33 access register validity */
50 __u32 da : 1; /* 34 delayed access exception */
51 __u32 : 7; /* 35-41 */
52 __u32 pr : 1; /* 42 tod programmable register validity */
53 __u32 fc : 1; /* 43 fp control register validity */
54 __u32 ap : 1; /* 44 ancillary report */
55 __u32 : 1; /* 45 */
56 __u32 ct : 1; /* 46 cpu timer validity */
57 __u32 cc : 1; /* 47 clock comparator validity */
58 __u32 : 16; /* 47-63 */
59};
60
61struct pt_regs;
62
63extern void s390_handle_mcck(void);
64extern void s390_do_machine_check(struct pt_regs *regs);
65
66#endif /* _ASM_S390_NMI_H */
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index db4523fe38ac..61862b3ac794 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -42,22 +42,8 @@ static inline void get_cpu_id(cpuid_t *ptr)
42 asm volatile("stidp 0(%1)" : "=m" (*ptr) : "a" (ptr)); 42 asm volatile("stidp 0(%1)" : "=m" (*ptr) : "a" (ptr));
43} 43}
44 44
45struct cpuinfo_S390
46{
47 cpuid_t cpu_id;
48 __u16 cpu_addr;
49 __u16 cpu_nr;
50 unsigned long loops_per_jiffy;
51 unsigned long *pgd_quick;
52#ifdef __s390x__
53 unsigned long *pmd_quick;
54#endif /* __s390x__ */
55 unsigned long *pte_quick;
56 unsigned long pgtable_cache_sz;
57};
58
59extern void s390_adjust_jiffies(void); 45extern void s390_adjust_jiffies(void);
60extern void print_cpu_info(struct cpuinfo_S390 *); 46extern void print_cpu_info(void);
61extern int get_cpu_capability(unsigned int *); 47extern int get_cpu_capability(unsigned int *);
62 48
63/* 49/*
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index 8920025c3c02..f1b051630c50 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -172,6 +172,8 @@
172#define NUM_CRS 16 172#define NUM_CRS 16
173#define NUM_ACRS 16 173#define NUM_ACRS 16
174 174
175#define NUM_CR_WORDS 3
176
175#define FPR_SIZE 8 177#define FPR_SIZE 8
176#define FPC_SIZE 4 178#define FPC_SIZE 4
177#define FPC_PAD_SIZE 4 /* gcc insists on aligning the fpregs */ 179#define FPC_PAD_SIZE 4 /* gcc insists on aligning the fpregs */
@@ -334,7 +336,7 @@ struct pt_regs
334 */ 336 */
335typedef struct 337typedef struct
336{ 338{
337 unsigned long cr[3]; 339 unsigned long cr[NUM_CR_WORDS];
338} per_cr_words; 340} per_cr_words;
339 341
340#define PER_EM_MASK 0xE8000000UL 342#define PER_EM_MASK 0xE8000000UL
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index 27fc1746de15..402d6dcf0d26 100644
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -314,6 +314,7 @@ typedef void qdio_handler_t(struct ccw_device *, unsigned int, int,
314 int, int, unsigned long); 314 int, int, unsigned long);
315 315
316/* qdio errors reported to the upper-layer program */ 316/* qdio errors reported to the upper-layer program */
317#define QDIO_ERROR_SIGA_TARGET 0x02
317#define QDIO_ERROR_SIGA_ACCESS_EXCEPTION 0x10 318#define QDIO_ERROR_SIGA_ACCESS_EXCEPTION 0x10
318#define QDIO_ERROR_SIGA_BUSY 0x20 319#define QDIO_ERROR_SIGA_BUSY 0x20
319#define QDIO_ERROR_ACTIVATE_CHECK_CONDITION 0x40 320#define QDIO_ERROR_ACTIVATE_CHECK_CONDITION 0x40
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h
index 024b91e06239..2009158a4502 100644
--- a/arch/s390/include/asm/smp.h
+++ b/arch/s390/include/asm/smp.h
@@ -50,12 +50,7 @@ extern void machine_power_off_smp(void);
50 50
51#define PROC_CHANGE_PENALTY 20 /* Schedule penalty */ 51#define PROC_CHANGE_PENALTY 20 /* Schedule penalty */
52 52
53#define raw_smp_processor_id() (S390_lowcore.cpu_data.cpu_nr) 53#define raw_smp_processor_id() (S390_lowcore.cpu_nr)
54
55static inline __u16 hard_smp_processor_id(void)
56{
57 return stap();
58}
59 54
60/* 55/*
61 * returns 1 if cpu is in stopped/check stopped state or not operational 56 * returns 1 if cpu is in stopped/check stopped state or not operational
diff --git a/arch/s390/include/asm/string.h b/arch/s390/include/asm/string.h
index d074673a6d9b..cd0241db5a46 100644
--- a/arch/s390/include/asm/string.h
+++ b/arch/s390/include/asm/string.h
@@ -100,6 +100,7 @@ static inline char *strcat(char *dst, const char *src)
100 100
101static inline char *strcpy(char *dst, const char *src) 101static inline char *strcpy(char *dst, const char *src)
102{ 102{
103#if __GNUC__ < 4
103 register int r0 asm("0") = 0; 104 register int r0 asm("0") = 0;
104 char *ret = dst; 105 char *ret = dst;
105 106
@@ -109,10 +110,14 @@ static inline char *strcpy(char *dst, const char *src)
109 : "+&a" (dst), "+&a" (src) : "d" (r0) 110 : "+&a" (dst), "+&a" (src) : "d" (r0)
110 : "cc", "memory"); 111 : "cc", "memory");
111 return ret; 112 return ret;
113#else
114 return __builtin_strcpy(dst, src);
115#endif
112} 116}
113 117
114static inline size_t strlen(const char *s) 118static inline size_t strlen(const char *s)
115{ 119{
120#if __GNUC__ < 4
116 register unsigned long r0 asm("0") = 0; 121 register unsigned long r0 asm("0") = 0;
117 const char *tmp = s; 122 const char *tmp = s;
118 123
@@ -121,6 +126,9 @@ static inline size_t strlen(const char *s)
121 " jo 0b" 126 " jo 0b"
122 : "+d" (r0), "+a" (tmp) : : "cc"); 127 : "+d" (r0), "+a" (tmp) : : "cc");
123 return r0 - (unsigned long) s; 128 return r0 - (unsigned long) s;
129#else
130 return __builtin_strlen(s);
131#endif
124} 132}
125 133
126static inline size_t strnlen(const char * s, size_t n) 134static inline size_t strnlen(const char * s, size_t n)
@@ -135,7 +143,13 @@ static inline size_t strnlen(const char * s, size_t n)
135 : "+a" (end), "+a" (tmp) : "d" (r0) : "cc"); 143 : "+a" (end), "+a" (tmp) : "d" (r0) : "cc");
136 return end - s; 144 return end - s;
137} 145}
138 146#else /* IN_ARCH_STRING_C */
147void *memchr(const void * s, int c, size_t n);
148void *memscan(void *s, int c, size_t n);
149char *strcat(char *dst, const char *src);
150char *strcpy(char *dst, const char *src);
151size_t strlen(const char *s);
152size_t strnlen(const char * s, size_t n);
139#endif /* !IN_ARCH_STRING_C */ 153#endif /* !IN_ARCH_STRING_C */
140 154
141#endif /* __KERNEL__ */ 155#endif /* __KERNEL__ */
diff --git a/arch/s390/include/asm/sysinfo.h b/arch/s390/include/asm/sysinfo.h
index ad93212d9e16..9d70057d828c 100644
--- a/arch/s390/include/asm/sysinfo.h
+++ b/arch/s390/include/asm/sysinfo.h
@@ -100,6 +100,7 @@ struct sysinfo_3_2_2 {
100 char reserved_1[24]; 100 char reserved_1[24];
101 101
102 } vm[8]; 102 } vm[8];
103 char reserved_544[3552];
103}; 104};
104 105
105static inline int stsi(void *sysinfo, int fc, int sel1, int sel2) 106static inline int stsi(void *sysinfo, int fc, int sel1, int sel2)
diff --git a/arch/s390/include/asm/tlbflush.h b/arch/s390/include/asm/tlbflush.h
index d60394b9745e..304cffa623e1 100644
--- a/arch/s390/include/asm/tlbflush.h
+++ b/arch/s390/include/asm/tlbflush.h
@@ -51,7 +51,7 @@ static inline void __tlb_flush_full(struct mm_struct *mm)
51 * If the process only ran on the local cpu, do a local flush. 51 * If the process only ran on the local cpu, do a local flush.
52 */ 52 */
53 local_cpumask = cpumask_of_cpu(smp_processor_id()); 53 local_cpumask = cpumask_of_cpu(smp_processor_id());
54 if (cpus_equal(mm->cpu_vm_mask, local_cpumask)) 54 if (cpumask_equal(mm_cpumask(mm), &local_cpumask))
55 __tlb_flush_local(); 55 __tlb_flush_local();
56 else 56 else
57 __tlb_flush_global(); 57 __tlb_flush_global();
@@ -73,7 +73,7 @@ static inline void __tlb_flush_idte(unsigned long asce)
73 73
74static inline void __tlb_flush_mm(struct mm_struct * mm) 74static inline void __tlb_flush_mm(struct mm_struct * mm)
75{ 75{
76 if (unlikely(cpus_empty(mm->cpu_vm_mask))) 76 if (unlikely(cpumask_empty(mm_cpumask(mm))))
77 return; 77 return;
78 /* 78 /*
79 * If the machine has IDTE we prefer to do a per mm flush 79 * If the machine has IDTE we prefer to do a per mm flush
diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h
index c979c3b56ab0..5e0ad618dc45 100644
--- a/arch/s390/include/asm/topology.h
+++ b/arch/s390/include/asm/topology.h
@@ -5,7 +5,6 @@
5 5
6#define mc_capable() (1) 6#define mc_capable() (1)
7 7
8cpumask_t cpu_coregroup_map(unsigned int cpu);
9const struct cpumask *cpu_coregroup_mask(unsigned int cpu); 8const struct cpumask *cpu_coregroup_mask(unsigned int cpu);
10 9
11extern cpumask_t cpu_core_map[NR_CPUS]; 10extern cpumask_t cpu_core_map[NR_CPUS];
diff --git a/arch/s390/include/asm/vtoc.h b/arch/s390/include/asm/vtoc.h
index 3a5267d90d29..8406a2b3157a 100644
--- a/arch/s390/include/asm/vtoc.h
+++ b/arch/s390/include/asm/vtoc.h
@@ -39,7 +39,7 @@ struct vtoc_labeldate
39 __u16 day; 39 __u16 day;
40} __attribute__ ((packed)); 40} __attribute__ ((packed));
41 41
42struct vtoc_volume_label 42struct vtoc_volume_label_cdl
43{ 43{
44 char volkey[4]; /* volume key = volume label */ 44 char volkey[4]; /* volume key = volume label */
45 char vollbl[4]; /* volume label */ 45 char vollbl[4]; /* volume label */
@@ -56,6 +56,14 @@ struct vtoc_volume_label
56 char res3[29]; /* reserved */ 56 char res3[29]; /* reserved */
57} __attribute__ ((packed)); 57} __attribute__ ((packed));
58 58
59struct vtoc_volume_label_ldl {
60 char vollbl[4]; /* volume label */
61 char volid[6]; /* volume identifier */
62 char res3[69]; /* reserved */
63 char ldl_version; /* version number, valid for ldl format */
64 __u64 formatted_blocks; /* valid when ldl_version >= f2 */
65} __attribute__ ((packed));
66
59struct vtoc_extent 67struct vtoc_extent
60{ 68{
61 __u8 typeind; /* extent type indicator */ 69 __u8 typeind; /* extent type indicator */
@@ -140,7 +148,11 @@ struct vtoc_format4_label
140 char res2[10]; /* reserved */ 148 char res2[10]; /* reserved */
141 __u8 DS4EFLVL; /* extended free-space management level */ 149 __u8 DS4EFLVL; /* extended free-space management level */
142 struct vtoc_cchhb DS4EFPTR; /* pointer to extended free-space info */ 150 struct vtoc_cchhb DS4EFPTR; /* pointer to extended free-space info */
143 char res3[9]; /* reserved */ 151 char res3; /* reserved */
152 __u32 DS4DCYL; /* number of logical cyls */
153 char res4[2]; /* reserved */
154 __u8 DS4DEVF2; /* device flags */
155 char res5; /* reserved */
144} __attribute__ ((packed)); 156} __attribute__ ((packed));
145 157
146struct vtoc_ds5ext 158struct vtoc_ds5ext
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 3edc6c6f258b..228e3105ded7 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -17,10 +17,12 @@ CFLAGS_smp.o := -Wno-nonnull
17# 17#
18CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' 18CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
19 19
20CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w
21
20obj-y := bitmap.o traps.o time.o process.o base.o early.o setup.o \ 22obj-y := bitmap.o traps.o time.o process.o base.o early.o setup.o \
21 processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \ 23 processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \
22 s390_ext.o debug.o irq.o ipl.o dis.o diag.o mem_detect.o \ 24 s390_ext.o debug.o irq.o ipl.o dis.o diag.o mem_detect.o \
23 vdso.o vtime.o 25 vdso.o vtime.o sysinfo.o nmi.o
24 26
25obj-y += $(if $(CONFIG_64BIT),entry64.o,entry.o) 27obj-y += $(if $(CONFIG_64BIT),entry64.o,entry.o)
26obj-y += $(if $(CONFIG_64BIT),reipl64.o,reipl.o) 28obj-y += $(if $(CONFIG_64BIT),reipl64.o,reipl.o)
diff --git a/arch/s390/kernel/bitmap.S b/arch/s390/kernel/bitmap.S
deleted file mode 100644
index dfb41f946e23..000000000000
--- a/arch/s390/kernel/bitmap.S
+++ /dev/null
@@ -1,56 +0,0 @@
1/*
2 * arch/s390/kernel/bitmap.S
3 * Bitmaps for set_bit, clear_bit, test_and_set_bit, ...
4 * See include/asm-s390/{bitops.h|posix_types.h} for details
5 *
6 * S390 version
7 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
8 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
9 */
10
11 .globl _oi_bitmap
12_oi_bitmap:
13 .byte 0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80
14
15 .globl _ni_bitmap
16_ni_bitmap:
17 .byte 0xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,0x7F
18
19 .globl _zb_findmap
20_zb_findmap:
21 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4
22 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5
23 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4
24 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,6
25 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4
26 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5
27 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4
28 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,7
29 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4
30 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5
31 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4
32 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,6
33 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4
34 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5
35 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4
36 .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,8
37
38 .globl _sb_findmap
39_sb_findmap:
40 .byte 8,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
41 .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
42 .byte 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
43 .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
44 .byte 6,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
45 .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
46 .byte 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
47 .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
48 .byte 7,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
49 .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
50 .byte 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
51 .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
52 .byte 6,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
53 .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
54 .byte 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
55 .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0
56
diff --git a/arch/s390/kernel/bitmap.c b/arch/s390/kernel/bitmap.c
new file mode 100644
index 000000000000..3ae4757b006a
--- /dev/null
+++ b/arch/s390/kernel/bitmap.c
@@ -0,0 +1,54 @@
1/*
2 * Bitmaps for set_bit, clear_bit, test_and_set_bit, ...
3 * See include/asm/{bitops.h|posix_types.h} for details
4 *
5 * Copyright IBM Corp. 1999,2009
6 * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
7 */
8
9#include <linux/bitops.h>
10#include <linux/module.h>
11
12const char _oi_bitmap[] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 };
13EXPORT_SYMBOL(_oi_bitmap);
14
15const char _ni_bitmap[] = { 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f };
16EXPORT_SYMBOL(_ni_bitmap);
17
18const char _zb_findmap[] = {
19 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,
20 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5,
21 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,
22 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,6,
23 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,
24 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5,
25 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,
26 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,7,
27 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,
28 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5,
29 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,
30 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,6,
31 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,
32 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5,
33 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4,
34 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,8 };
35EXPORT_SYMBOL(_zb_findmap);
36
37const char _sb_findmap[] = {
38 8,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
39 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
40 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
41 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
42 6,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
43 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
44 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
45 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
46 7,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
47 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
48 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
49 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
50 6,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
51 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
52 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,
53 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 };
54EXPORT_SYMBOL(_sb_findmap);
diff --git a/arch/s390/kernel/compat_ptrace.h b/arch/s390/kernel/compat_ptrace.h
index a2be3a978d5c..123dd660d7fb 100644
--- a/arch/s390/kernel/compat_ptrace.h
+++ b/arch/s390/kernel/compat_ptrace.h
@@ -1,10 +1,11 @@
1#ifndef _PTRACE32_H 1#ifndef _PTRACE32_H
2#define _PTRACE32_H 2#define _PTRACE32_H
3 3
4#include <asm/ptrace.h> /* needed for NUM_CR_WORDS */
4#include "compat_linux.h" /* needed for psw_compat_t */ 5#include "compat_linux.h" /* needed for psw_compat_t */
5 6
6typedef struct { 7typedef struct {
7 __u32 cr[3]; 8 __u32 cr[NUM_CR_WORDS];
8} per_cr_words32; 9} per_cr_words32;
9 10
10typedef struct { 11typedef struct {
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index ba03fc0a3a56..be8bceaf37d9 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -603,7 +603,7 @@ debug_input(struct file *file, const char __user *user_buf, size_t length,
603static int 603static int
604debug_open(struct inode *inode, struct file *file) 604debug_open(struct inode *inode, struct file *file)
605{ 605{
606 int i = 0, rc = 0; 606 int i, rc = 0;
607 file_private_info_t *p_info; 607 file_private_info_t *p_info;
608 debug_info_t *debug_info, *debug_info_snapshot; 608 debug_info_t *debug_info, *debug_info_snapshot;
609 609
@@ -642,8 +642,7 @@ found:
642 p_info = kmalloc(sizeof(file_private_info_t), 642 p_info = kmalloc(sizeof(file_private_info_t),
643 GFP_KERNEL); 643 GFP_KERNEL);
644 if(!p_info){ 644 if(!p_info){
645 if(debug_info_snapshot) 645 debug_info_free(debug_info_snapshot);
646 debug_info_free(debug_info_snapshot);
647 rc = -ENOMEM; 646 rc = -ENOMEM;
648 goto out; 647 goto out;
649 } 648 }
@@ -698,8 +697,7 @@ debug_info_t *debug_register_mode(const char *name, int pages_per_area,
698 if ((uid != 0) || (gid != 0)) 697 if ((uid != 0) || (gid != 0))
699 pr_warning("Root becomes the owner of all s390dbf files " 698 pr_warning("Root becomes the owner of all s390dbf files "
700 "in sysfs\n"); 699 "in sysfs\n");
701 if (!initialized) 700 BUG_ON(!initialized);
702 BUG();
703 mutex_lock(&debug_mutex); 701 mutex_lock(&debug_mutex);
704 702
705 /* create new debug_info */ 703 /* create new debug_info */
@@ -1156,7 +1154,6 @@ debug_unregister_view(debug_info_t * id, struct debug_view *view)
1156 else { 1154 else {
1157 debugfs_remove(id->debugfs_entries[i]); 1155 debugfs_remove(id->debugfs_entries[i]);
1158 id->views[i] = NULL; 1156 id->views[i] = NULL;
1159 rc = 0;
1160 } 1157 }
1161 spin_unlock_irqrestore(&id->lock, flags); 1158 spin_unlock_irqrestore(&id->lock, flags);
1162out: 1159out:
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 2a2ca268b1dd..4d221c81c849 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -6,6 +6,7 @@
6 * Heiko Carstens <heiko.carstens@de.ibm.com> 6 * Heiko Carstens <heiko.carstens@de.ibm.com>
7 */ 7 */
8 8
9#include <linux/compiler.h>
9#include <linux/init.h> 10#include <linux/init.h>
10#include <linux/errno.h> 11#include <linux/errno.h>
11#include <linux/string.h> 12#include <linux/string.h>
@@ -20,6 +21,7 @@
20#include <asm/processor.h> 21#include <asm/processor.h>
21#include <asm/sections.h> 22#include <asm/sections.h>
22#include <asm/setup.h> 23#include <asm/setup.h>
24#include <asm/sysinfo.h>
23#include <asm/cpcmd.h> 25#include <asm/cpcmd.h>
24#include <asm/sclp.h> 26#include <asm/sclp.h>
25#include "entry.h" 27#include "entry.h"
@@ -173,19 +175,21 @@ static noinline __init void init_kernel_storage_key(void)
173 page_set_storage_key(init_pfn << PAGE_SHIFT, PAGE_DEFAULT_KEY); 175 page_set_storage_key(init_pfn << PAGE_SHIFT, PAGE_DEFAULT_KEY);
174} 176}
175 177
178static __initdata struct sysinfo_3_2_2 vmms __aligned(PAGE_SIZE);
179
176static noinline __init void detect_machine_type(void) 180static noinline __init void detect_machine_type(void)
177{ 181{
178 struct cpuinfo_S390 *cpuinfo = &S390_lowcore.cpu_data; 182 /* No VM information? Looks like LPAR */
179 183 if (stsi(&vmms, 3, 2, 2) == -ENOSYS)
180 get_cpu_id(&S390_lowcore.cpu_data.cpu_id); 184 return;
181 185 if (!vmms.count)
182 /* Running under z/VM ? */ 186 return;
183 if (cpuinfo->cpu_id.version == 0xff)
184 machine_flags |= MACHINE_FLAG_VM;
185 187
186 /* Running under KVM ? */ 188 /* Running under KVM? If not we assume z/VM */
187 if (cpuinfo->cpu_id.version == 0xfe) 189 if (!memcmp(vmms.vm[0].cpi, "\xd2\xe5\xd4", 3))
188 machine_flags |= MACHINE_FLAG_KVM; 190 machine_flags |= MACHINE_FLAG_KVM;
191 else
192 machine_flags |= MACHINE_FLAG_VM;
189} 193}
190 194
191static __init void early_pgm_check_handler(void) 195static __init void early_pgm_check_handler(void)
@@ -348,7 +352,6 @@ static void __init setup_boot_command_line(void)
348 352
349 /* copy arch command line */ 353 /* copy arch command line */
350 strlcpy(boot_command_line, COMMAND_LINE, ARCH_COMMAND_LINE_SIZE); 354 strlcpy(boot_command_line, COMMAND_LINE, ARCH_COMMAND_LINE_SIZE);
351 boot_command_line[ARCH_COMMAND_LINE_SIZE - 1] = 0;
352 355
353 /* append IPL PARM data to the boot command line */ 356 /* append IPL PARM data to the boot command line */
354 if (MACHINE_IS_VM) { 357 if (MACHINE_IS_VM) {
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index ec7e35f6055b..1046c2c9f8d1 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -469,6 +469,8 @@ start:
469 .org 0x10000 469 .org 0x10000
470startup:basr %r13,0 # get base 470startup:basr %r13,0 # get base
471.LPG0: 471.LPG0:
472 xc 0x200(256),0x200 # partially clear lowcore
473 xc 0x300(256),0x300
472 474
473#ifndef CONFIG_MARCH_G5 475#ifndef CONFIG_MARCH_G5
474 # check processor version against MARCH_{G5,Z900,Z990,Z9_109,Z10} 476 # check processor version against MARCH_{G5,Z900,Z990,Z9_109,Z10}
diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
index db476d114caa..2ced846065b7 100644
--- a/arch/s390/kernel/head31.S
+++ b/arch/s390/kernel/head31.S
@@ -20,7 +20,6 @@ startup_continue:
20 lctl %c0,%c15,.Lctl-.LPG1(%r13) # load control registers 20 lctl %c0,%c15,.Lctl-.LPG1(%r13) # load control registers
21 l %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area 21 l %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area
22 # move IPL device to lowcore 22 # move IPL device to lowcore
23 mvc __LC_IPLDEV(4),IPL_DEVICE-PARMAREA(%r12)
24# 23#
25# Setup stack 24# Setup stack
26# 25#
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S
index f9f70aa15244..65667b2e65ce 100644
--- a/arch/s390/kernel/head64.S
+++ b/arch/s390/kernel/head64.S
@@ -86,7 +86,6 @@ startup_continue:
86 lctlg %c0,%c15,.Lctl-.LPG1(%r13) # load control registers 86 lctlg %c0,%c15,.Lctl-.LPG1(%r13) # load control registers
87 lg %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area 87 lg %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area
88 # move IPL device to lowcore 88 # move IPL device to lowcore
89 mvc __LC_IPLDEV(4),IPL_DEVICE+4-PARMAREA(%r12)
90 lghi %r0,__LC_PASTE 89 lghi %r0,__LC_PASTE
91 stg %r0,__LC_VDSO_PER_CPU 90 stg %r0,__LC_VDSO_PER_CPU
92# 91#
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 2dcf590faba6..6f3711a0eaaa 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -23,7 +23,7 @@
23#include <asm/ebcdic.h> 23#include <asm/ebcdic.h>
24#include <asm/reset.h> 24#include <asm/reset.h>
25#include <asm/sclp.h> 25#include <asm/sclp.h>
26#include <asm/setup.h> 26#include <asm/checksum.h>
27 27
28#define IPL_PARM_BLOCK_VERSION 0 28#define IPL_PARM_BLOCK_VERSION 0
29 29
@@ -56,13 +56,14 @@ struct shutdown_trigger {
56}; 56};
57 57
58/* 58/*
59 * Five shutdown action types are supported: 59 * The following shutdown action types are supported:
60 */ 60 */
61#define SHUTDOWN_ACTION_IPL_STR "ipl" 61#define SHUTDOWN_ACTION_IPL_STR "ipl"
62#define SHUTDOWN_ACTION_REIPL_STR "reipl" 62#define SHUTDOWN_ACTION_REIPL_STR "reipl"
63#define SHUTDOWN_ACTION_DUMP_STR "dump" 63#define SHUTDOWN_ACTION_DUMP_STR "dump"
64#define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" 64#define SHUTDOWN_ACTION_VMCMD_STR "vmcmd"
65#define SHUTDOWN_ACTION_STOP_STR "stop" 65#define SHUTDOWN_ACTION_STOP_STR "stop"
66#define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl"
66 67
67struct shutdown_action { 68struct shutdown_action {
68 char *name; 69 char *name;
@@ -146,6 +147,7 @@ static enum ipl_method reipl_method = REIPL_METHOD_DEFAULT;
146static struct ipl_parameter_block *reipl_block_fcp; 147static struct ipl_parameter_block *reipl_block_fcp;
147static struct ipl_parameter_block *reipl_block_ccw; 148static struct ipl_parameter_block *reipl_block_ccw;
148static struct ipl_parameter_block *reipl_block_nss; 149static struct ipl_parameter_block *reipl_block_nss;
150static struct ipl_parameter_block *reipl_block_actual;
149 151
150static int dump_capabilities = DUMP_TYPE_NONE; 152static int dump_capabilities = DUMP_TYPE_NONE;
151static enum dump_type dump_type = DUMP_TYPE_NONE; 153static enum dump_type dump_type = DUMP_TYPE_NONE;
@@ -835,6 +837,7 @@ static int reipl_set_type(enum ipl_type type)
835 reipl_method = REIPL_METHOD_CCW_VM; 837 reipl_method = REIPL_METHOD_CCW_VM;
836 else 838 else
837 reipl_method = REIPL_METHOD_CCW_CIO; 839 reipl_method = REIPL_METHOD_CCW_CIO;
840 reipl_block_actual = reipl_block_ccw;
838 break; 841 break;
839 case IPL_TYPE_FCP: 842 case IPL_TYPE_FCP:
840 if (diag308_set_works) 843 if (diag308_set_works)
@@ -843,6 +846,7 @@ static int reipl_set_type(enum ipl_type type)
843 reipl_method = REIPL_METHOD_FCP_RO_VM; 846 reipl_method = REIPL_METHOD_FCP_RO_VM;
844 else 847 else
845 reipl_method = REIPL_METHOD_FCP_RO_DIAG; 848 reipl_method = REIPL_METHOD_FCP_RO_DIAG;
849 reipl_block_actual = reipl_block_fcp;
846 break; 850 break;
847 case IPL_TYPE_FCP_DUMP: 851 case IPL_TYPE_FCP_DUMP:
848 reipl_method = REIPL_METHOD_FCP_DUMP; 852 reipl_method = REIPL_METHOD_FCP_DUMP;
@@ -852,6 +856,7 @@ static int reipl_set_type(enum ipl_type type)
852 reipl_method = REIPL_METHOD_NSS_DIAG; 856 reipl_method = REIPL_METHOD_NSS_DIAG;
853 else 857 else
854 reipl_method = REIPL_METHOD_NSS; 858 reipl_method = REIPL_METHOD_NSS;
859 reipl_block_actual = reipl_block_nss;
855 break; 860 break;
856 case IPL_TYPE_UNKNOWN: 861 case IPL_TYPE_UNKNOWN:
857 reipl_method = REIPL_METHOD_DEFAULT; 862 reipl_method = REIPL_METHOD_DEFAULT;
@@ -960,7 +965,6 @@ static void reipl_run(struct shutdown_trigger *trigger)
960 diag308(DIAG308_IPL, NULL); 965 diag308(DIAG308_IPL, NULL);
961 break; 966 break;
962 case REIPL_METHOD_FCP_DUMP: 967 case REIPL_METHOD_FCP_DUMP:
963 default:
964 break; 968 break;
965 } 969 }
966 disabled_wait((unsigned long) __builtin_return_address(0)); 970 disabled_wait((unsigned long) __builtin_return_address(0));
@@ -1069,10 +1073,12 @@ static int __init reipl_fcp_init(void)
1069{ 1073{
1070 int rc; 1074 int rc;
1071 1075
1072 if ((!diag308_set_works) && (ipl_info.type != IPL_TYPE_FCP)) 1076 if (!diag308_set_works) {
1073 return 0; 1077 if (ipl_info.type == IPL_TYPE_FCP)
1074 if ((!diag308_set_works) && (ipl_info.type == IPL_TYPE_FCP)) 1078 make_attrs_ro(reipl_fcp_attrs);
1075 make_attrs_ro(reipl_fcp_attrs); 1079 else
1080 return 0;
1081 }
1076 1082
1077 reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); 1083 reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL);
1078 if (!reipl_block_fcp) 1084 if (!reipl_block_fcp)
@@ -1253,7 +1259,6 @@ static void dump_run(struct shutdown_trigger *trigger)
1253 diag308(DIAG308_DUMP, NULL); 1259 diag308(DIAG308_DUMP, NULL);
1254 break; 1260 break;
1255 case DUMP_METHOD_NONE: 1261 case DUMP_METHOD_NONE:
1256 default:
1257 return; 1262 return;
1258 } 1263 }
1259 printk(KERN_EMERG "Dump failed!\n"); 1264 printk(KERN_EMERG "Dump failed!\n");
@@ -1332,6 +1337,49 @@ static struct shutdown_action __refdata dump_action = {
1332 .init = dump_init, 1337 .init = dump_init,
1333}; 1338};
1334 1339
1340static void dump_reipl_run(struct shutdown_trigger *trigger)
1341{
1342 preempt_disable();
1343 /*
1344 * Bypass dynamic address translation (DAT) when storing IPL parameter
1345 * information block address and checksum into the prefix area
1346 * (corresponding to absolute addresses 0-8191).
1347 * When enhanced DAT applies and the STE format control in one,
1348 * the absolute address is formed without prefixing. In this case a
1349 * normal store (stg/st) into the prefix area would no more match to
1350 * absolute addresses 0-8191.
1351 */
1352#ifdef CONFIG_64BIT
1353 asm volatile("sturg %0,%1"
1354 :: "a" ((unsigned long) reipl_block_actual),
1355 "a" (&lowcore_ptr[smp_processor_id()]->ipib));
1356#else
1357 asm volatile("stura %0,%1"
1358 :: "a" ((unsigned long) reipl_block_actual),
1359 "a" (&lowcore_ptr[smp_processor_id()]->ipib));
1360#endif
1361 asm volatile("stura %0,%1"
1362 :: "a" (csum_partial(reipl_block_actual,
1363 reipl_block_actual->hdr.len, 0)),
1364 "a" (&lowcore_ptr[smp_processor_id()]->ipib_checksum));
1365 preempt_enable();
1366 dump_run(trigger);
1367}
1368
1369static int __init dump_reipl_init(void)
1370{
1371 if (!diag308_set_works)
1372 return -EOPNOTSUPP;
1373 else
1374 return 0;
1375}
1376
1377static struct shutdown_action __refdata dump_reipl_action = {
1378 .name = SHUTDOWN_ACTION_DUMP_REIPL_STR,
1379 .fn = dump_reipl_run,
1380 .init = dump_reipl_init,
1381};
1382
1335/* 1383/*
1336 * vmcmd shutdown action: Trigger vm command on shutdown. 1384 * vmcmd shutdown action: Trigger vm command on shutdown.
1337 */ 1385 */
@@ -1421,7 +1469,8 @@ static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR,
1421/* action list */ 1469/* action list */
1422 1470
1423static struct shutdown_action *shutdown_actions_list[] = { 1471static struct shutdown_action *shutdown_actions_list[] = {
1424 &ipl_action, &reipl_action, &dump_action, &vmcmd_action, &stop_action}; 1472 &ipl_action, &reipl_action, &dump_reipl_action, &dump_action,
1473 &vmcmd_action, &stop_action};
1425#define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) 1474#define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *))
1426 1475
1427/* 1476/*
@@ -1434,11 +1483,11 @@ static int set_trigger(const char *buf, struct shutdown_trigger *trigger,
1434 size_t len) 1483 size_t len)
1435{ 1484{
1436 int i; 1485 int i;
1486
1437 for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { 1487 for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) {
1438 if (!shutdown_actions_list[i]) 1488 if (!shutdown_actions_list[i])
1439 continue; 1489 continue;
1440 if (strncmp(buf, shutdown_actions_list[i]->name, 1490 if (sysfs_streq(buf, shutdown_actions_list[i]->name)) {
1441 strlen(shutdown_actions_list[i]->name)) == 0) {
1442 trigger->action = shutdown_actions_list[i]; 1491 trigger->action = shutdown_actions_list[i];
1443 return len; 1492 return len;
1444 } 1493 }
@@ -1672,7 +1721,7 @@ static int on_panic_notify(struct notifier_block *self,
1672 1721
1673static struct notifier_block on_panic_nb = { 1722static struct notifier_block on_panic_nb = {
1674 .notifier_call = on_panic_notify, 1723 .notifier_call = on_panic_notify,
1675 .priority = 0, 1724 .priority = INT_MIN,
1676}; 1725};
1677 1726
1678void __init setup_ipl(void) 1727void __init setup_ipl(void)
@@ -1696,7 +1745,6 @@ void __init setup_ipl(void)
1696 sizeof(ipl_info.data.nss.name)); 1745 sizeof(ipl_info.data.nss.name));
1697 break; 1746 break;
1698 case IPL_TYPE_UNKNOWN: 1747 case IPL_TYPE_UNKNOWN:
1699 default:
1700 /* We have no info to copy */ 1748 /* We have no info to copy */
1701 break; 1749 break;
1702 } 1750 }
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index 59b4e796680a..eed4a00cb676 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -310,15 +310,20 @@ apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
310 info->plt_initialized = 1; 310 info->plt_initialized = 1;
311 } 311 }
312 if (r_type == R_390_PLTOFF16 || 312 if (r_type == R_390_PLTOFF16 ||
313 r_type == R_390_PLTOFF32 313 r_type == R_390_PLTOFF32 ||
314 || r_type == R_390_PLTOFF64 314 r_type == R_390_PLTOFF64)
315 )
316 val = me->arch.plt_offset - me->arch.got_offset + 315 val = me->arch.plt_offset - me->arch.got_offset +
317 info->plt_offset + rela->r_addend; 316 info->plt_offset + rela->r_addend;
318 else 317 else {
319 val = (Elf_Addr) me->module_core + 318 if (!((r_type == R_390_PLT16DBL &&
320 me->arch.plt_offset + info->plt_offset + 319 val - loc + 0xffffUL < 0x1ffffeUL) ||
321 rela->r_addend - loc; 320 (r_type == R_390_PLT32DBL &&
321 val - loc + 0xffffffffULL < 0x1fffffffeULL)))
322 val = (Elf_Addr) me->module_core +
323 me->arch.plt_offset +
324 info->plt_offset;
325 val += rela->r_addend - loc;
326 }
322 if (r_type == R_390_PLT16DBL) 327 if (r_type == R_390_PLT16DBL)
323 *(unsigned short *) loc = val >> 1; 328 *(unsigned short *) loc = val >> 1;
324 else if (r_type == R_390_PLTOFF16) 329 else if (r_type == R_390_PLTOFF16)
diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c
new file mode 100644
index 000000000000..4bfdc421d7e9
--- /dev/null
+++ b/arch/s390/kernel/nmi.c
@@ -0,0 +1,376 @@
1/*
2 * Machine check handler
3 *
4 * Copyright IBM Corp. 2000,2009
5 * Author(s): Ingo Adlung <adlung@de.ibm.com>,
6 * Martin Schwidefsky <schwidefsky@de.ibm.com>,
7 * Cornelia Huck <cornelia.huck@de.ibm.com>,
8 * Heiko Carstens <heiko.carstens@de.ibm.com>,
9 */
10
11#include <linux/init.h>
12#include <linux/errno.h>
13#include <linux/time.h>
14#include <linux/module.h>
15#include <asm/lowcore.h>
16#include <asm/smp.h>
17#include <asm/etr.h>
18#include <asm/cpu.h>
19#include <asm/nmi.h>
20#include <asm/crw.h>
21
22struct mcck_struct {
23 int kill_task;
24 int channel_report;
25 int warning;
26 unsigned long long mcck_code;
27};
28
29static DEFINE_PER_CPU(struct mcck_struct, cpu_mcck);
30
31static NORET_TYPE void s390_handle_damage(char *msg)
32{
33 smp_send_stop();
34 disabled_wait((unsigned long) __builtin_return_address(0));
35 while (1);
36}
37
38/*
39 * Main machine check handler function. Will be called with interrupts enabled
40 * or disabled and machine checks enabled or disabled.
41 */
42void s390_handle_mcck(void)
43{
44 unsigned long flags;
45 struct mcck_struct mcck;
46
47 /*
48 * Disable machine checks and get the current state of accumulated
49 * machine checks. Afterwards delete the old state and enable machine
50 * checks again.
51 */
52 local_irq_save(flags);
53 local_mcck_disable();
54 mcck = __get_cpu_var(cpu_mcck);
55 memset(&__get_cpu_var(cpu_mcck), 0, sizeof(struct mcck_struct));
56 clear_thread_flag(TIF_MCCK_PENDING);
57 local_mcck_enable();
58 local_irq_restore(flags);
59
60 if (mcck.channel_report)
61 crw_handle_channel_report();
62 /*
63 * A warning may remain for a prolonged period on the bare iron.
64 * (actually until the machine is powered off, or the problem is gone)
65 * So we just stop listening for the WARNING MCH and avoid continuously
66 * being interrupted. One caveat is however, that we must do this per
67 * processor and cannot use the smp version of ctl_clear_bit().
68 * On VM we only get one interrupt per virtally presented machinecheck.
69 * Though one suffices, we may get one interrupt per (virtual) cpu.
70 */
71 if (mcck.warning) { /* WARNING pending ? */
72 static int mchchk_wng_posted = 0;
73
74 /* Use single cpu clear, as we cannot handle smp here. */
75 __ctl_clear_bit(14, 24); /* Disable WARNING MCH */
76 if (xchg(&mchchk_wng_posted, 1) == 0)
77 kill_cad_pid(SIGPWR, 1);
78 }
79 if (mcck.kill_task) {
80 local_irq_enable();
81 printk(KERN_EMERG "mcck: Terminating task because of machine "
82 "malfunction (code 0x%016llx).\n", mcck.mcck_code);
83 printk(KERN_EMERG "mcck: task: %s, pid: %d.\n",
84 current->comm, current->pid);
85 do_exit(SIGSEGV);
86 }
87}
88EXPORT_SYMBOL_GPL(s390_handle_mcck);
89
90/*
91 * returns 0 if all registers could be validated
92 * returns 1 otherwise
93 */
94static int notrace s390_revalidate_registers(struct mci *mci)
95{
96 int kill_task;
97 u64 tmpclock;
98 u64 zero;
99 void *fpt_save_area, *fpt_creg_save_area;
100
101 kill_task = 0;
102 zero = 0;
103
104 if (!mci->gr) {
105 /*
106 * General purpose registers couldn't be restored and have
107 * unknown contents. Process needs to be terminated.
108 */
109 kill_task = 1;
110 }
111 if (!mci->fp) {
112 /*
113 * Floating point registers can't be restored and
114 * therefore the process needs to be terminated.
115 */
116 kill_task = 1;
117 }
118#ifndef CONFIG_64BIT
119 asm volatile(
120 " ld 0,0(%0)\n"
121 " ld 2,8(%0)\n"
122 " ld 4,16(%0)\n"
123 " ld 6,24(%0)"
124 : : "a" (&S390_lowcore.floating_pt_save_area));
125#endif
126
127 if (MACHINE_HAS_IEEE) {
128#ifdef CONFIG_64BIT
129 fpt_save_area = &S390_lowcore.floating_pt_save_area;
130 fpt_creg_save_area = &S390_lowcore.fpt_creg_save_area;
131#else
132 fpt_save_area = (void *) S390_lowcore.extended_save_area_addr;
133 fpt_creg_save_area = fpt_save_area + 128;
134#endif
135 if (!mci->fc) {
136 /*
137 * Floating point control register can't be restored.
138 * Task will be terminated.
139 */
140 asm volatile("lfpc 0(%0)" : : "a" (&zero), "m" (zero));
141 kill_task = 1;
142
143 } else
144 asm volatile("lfpc 0(%0)" : : "a" (fpt_creg_save_area));
145
146 asm volatile(
147 " ld 0,0(%0)\n"
148 " ld 1,8(%0)\n"
149 " ld 2,16(%0)\n"
150 " ld 3,24(%0)\n"
151 " ld 4,32(%0)\n"
152 " ld 5,40(%0)\n"
153 " ld 6,48(%0)\n"
154 " ld 7,56(%0)\n"
155 " ld 8,64(%0)\n"
156 " ld 9,72(%0)\n"
157 " ld 10,80(%0)\n"
158 " ld 11,88(%0)\n"
159 " ld 12,96(%0)\n"
160 " ld 13,104(%0)\n"
161 " ld 14,112(%0)\n"
162 " ld 15,120(%0)\n"
163 : : "a" (fpt_save_area));
164 }
165 /* Revalidate access registers */
166 asm volatile(
167 " lam 0,15,0(%0)"
168 : : "a" (&S390_lowcore.access_regs_save_area));
169 if (!mci->ar) {
170 /*
171 * Access registers have unknown contents.
172 * Terminating task.
173 */
174 kill_task = 1;
175 }
176 /* Revalidate control registers */
177 if (!mci->cr) {
178 /*
179 * Control registers have unknown contents.
180 * Can't recover and therefore stopping machine.
181 */
182 s390_handle_damage("invalid control registers.");
183 } else {
184#ifdef CONFIG_64BIT
185 asm volatile(
186 " lctlg 0,15,0(%0)"
187 : : "a" (&S390_lowcore.cregs_save_area));
188#else
189 asm volatile(
190 " lctl 0,15,0(%0)"
191 : : "a" (&S390_lowcore.cregs_save_area));
192#endif
193 }
194 /*
195 * We don't even try to revalidate the TOD register, since we simply
196 * can't write something sensible into that register.
197 */
198#ifdef CONFIG_64BIT
199 /*
200 * See if we can revalidate the TOD programmable register with its
201 * old contents (should be zero) otherwise set it to zero.
202 */
203 if (!mci->pr)
204 asm volatile(
205 " sr 0,0\n"
206 " sckpf"
207 : : : "0", "cc");
208 else
209 asm volatile(
210 " l 0,0(%0)\n"
211 " sckpf"
212 : : "a" (&S390_lowcore.tod_progreg_save_area)
213 : "0", "cc");
214#endif
215 /* Revalidate clock comparator register */
216 asm volatile(
217 " stck 0(%1)\n"
218 " sckc 0(%1)"
219 : "=m" (tmpclock) : "a" (&(tmpclock)) : "cc", "memory");
220
221 /* Check if old PSW is valid */
222 if (!mci->wp)
223 /*
224 * Can't tell if we come from user or kernel mode
225 * -> stopping machine.
226 */
227 s390_handle_damage("old psw invalid.");
228
229 if (!mci->ms || !mci->pm || !mci->ia)
230 kill_task = 1;
231
232 return kill_task;
233}
234
235#define MAX_IPD_COUNT 29
236#define MAX_IPD_TIME (5 * 60 * USEC_PER_SEC) /* 5 minutes */
237
238#define ED_STP_ISLAND 6 /* External damage STP island check */
239#define ED_STP_SYNC 7 /* External damage STP sync check */
240#define ED_ETR_SYNC 12 /* External damage ETR sync check */
241#define ED_ETR_SWITCH 13 /* External damage ETR switch to local */
242
243/*
244 * machine check handler.
245 */
246void notrace s390_do_machine_check(struct pt_regs *regs)
247{
248 static int ipd_count;
249 static DEFINE_SPINLOCK(ipd_lock);
250 static unsigned long long last_ipd;
251 struct mcck_struct *mcck;
252 unsigned long long tmp;
253 struct mci *mci;
254 int umode;
255
256 lockdep_off();
257 s390_idle_check();
258
259 mci = (struct mci *) &S390_lowcore.mcck_interruption_code;
260 mcck = &__get_cpu_var(cpu_mcck);
261 umode = user_mode(regs);
262
263 if (mci->sd) {
264 /* System damage -> stopping machine */
265 s390_handle_damage("received system damage machine check.");
266 }
267 if (mci->pd) {
268 if (mci->b) {
269 /* Processing backup -> verify if we can survive this */
270 u64 z_mcic, o_mcic, t_mcic;
271#ifdef CONFIG_64BIT
272 z_mcic = (1ULL<<63 | 1ULL<<59 | 1ULL<<29);
273 o_mcic = (1ULL<<43 | 1ULL<<42 | 1ULL<<41 | 1ULL<<40 |
274 1ULL<<36 | 1ULL<<35 | 1ULL<<34 | 1ULL<<32 |
275 1ULL<<30 | 1ULL<<21 | 1ULL<<20 | 1ULL<<17 |
276 1ULL<<16);
277#else
278 z_mcic = (1ULL<<63 | 1ULL<<59 | 1ULL<<57 | 1ULL<<50 |
279 1ULL<<29);
280 o_mcic = (1ULL<<43 | 1ULL<<42 | 1ULL<<41 | 1ULL<<40 |
281 1ULL<<36 | 1ULL<<35 | 1ULL<<34 | 1ULL<<32 |
282 1ULL<<30 | 1ULL<<20 | 1ULL<<17 | 1ULL<<16);
283#endif
284 t_mcic = *(u64 *)mci;
285
286 if (((t_mcic & z_mcic) != 0) ||
287 ((t_mcic & o_mcic) != o_mcic)) {
288 s390_handle_damage("processing backup machine "
289 "check with damage.");
290 }
291
292 /*
293 * Nullifying exigent condition, therefore we might
294 * retry this instruction.
295 */
296 spin_lock(&ipd_lock);
297 tmp = get_clock();
298 if (((tmp - last_ipd) >> 12) < MAX_IPD_TIME)
299 ipd_count++;
300 else
301 ipd_count = 1;
302 last_ipd = tmp;
303 if (ipd_count == MAX_IPD_COUNT)
304 s390_handle_damage("too many ipd retries.");
305 spin_unlock(&ipd_lock);
306 } else {
307 /* Processing damage -> stopping machine */
308 s390_handle_damage("received instruction processing "
309 "damage machine check.");
310 }
311 }
312 if (s390_revalidate_registers(mci)) {
313 if (umode) {
314 /*
315 * Couldn't restore all register contents while in
316 * user mode -> mark task for termination.
317 */
318 mcck->kill_task = 1;
319 mcck->mcck_code = *(unsigned long long *) mci;
320 set_thread_flag(TIF_MCCK_PENDING);
321 } else {
322 /*
323 * Couldn't restore all register contents while in
324 * kernel mode -> stopping machine.
325 */
326 s390_handle_damage("unable to revalidate registers.");
327 }
328 }
329 if (mci->cd) {
330 /* Timing facility damage */
331 s390_handle_damage("TOD clock damaged");
332 }
333 if (mci->ed && mci->ec) {
334 /* External damage */
335 if (S390_lowcore.external_damage_code & (1U << ED_ETR_SYNC))
336 etr_sync_check();
337 if (S390_lowcore.external_damage_code & (1U << ED_ETR_SWITCH))
338 etr_switch_to_local();
339 if (S390_lowcore.external_damage_code & (1U << ED_STP_SYNC))
340 stp_sync_check();
341 if (S390_lowcore.external_damage_code & (1U << ED_STP_ISLAND))
342 stp_island_check();
343 }
344 if (mci->se)
345 /* Storage error uncorrected */
346 s390_handle_damage("received storage error uncorrected "
347 "machine check.");
348 if (mci->ke)
349 /* Storage key-error uncorrected */
350 s390_handle_damage("received storage key-error uncorrected "
351 "machine check.");
352 if (mci->ds && mci->fa)
353 /* Storage degradation */
354 s390_handle_damage("received storage degradation machine "
355 "check.");
356 if (mci->cp) {
357 /* Channel report word pending */
358 mcck->channel_report = 1;
359 set_thread_flag(TIF_MCCK_PENDING);
360 }
361 if (mci->w) {
362 /* Warning pending */
363 mcck->warning = 1;
364 set_thread_flag(TIF_MCCK_PENDING);
365 }
366 lockdep_on();
367}
368
369static int __init machine_check_init(void)
370{
371 ctl_set_bit(14, 25); /* enable external damage MCH */
372 ctl_set_bit(14, 27); /* enable system recovery MCH */
373 ctl_set_bit(14, 24); /* enable warning MCH */
374 return 0;
375}
376arch_initcall(machine_check_init);
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 5cd38a90e64d..b48e961a38f6 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -1,18 +1,10 @@
1/* 1/*
2 * arch/s390/kernel/process.c 2 * This file handles the architecture dependent parts of process handling.
3 * 3 *
4 * S390 version 4 * Copyright IBM Corp. 1999,2009
5 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation 5 * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>,
6 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), 6 * Hartmut Penner <hp@de.ibm.com>,
7 * Hartmut Penner (hp@de.ibm.com), 7 * Denis Joseph Barrow,
8 * Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
9 *
10 * Derived from "arch/i386/kernel/process.c"
11 * Copyright (C) 1995, Linus Torvalds
12 */
13
14/*
15 * This file handles the architecture-dependent parts of process handling..
16 */ 8 */
17 9
18#include <linux/compiler.h> 10#include <linux/compiler.h>
@@ -47,6 +39,7 @@
47#include <asm/processor.h> 39#include <asm/processor.h>
48#include <asm/irq.h> 40#include <asm/irq.h>
49#include <asm/timer.h> 41#include <asm/timer.h>
42#include <asm/nmi.h>
50#include "entry.h" 43#include "entry.h"
51 44
52asmlinkage void ret_from_fork(void) asm ("ret_from_fork"); 45asmlinkage void ret_from_fork(void) asm ("ret_from_fork");
@@ -76,7 +69,6 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
76 return sf->gprs[8]; 69 return sf->gprs[8];
77} 70}
78 71
79extern void s390_handle_mcck(void);
80/* 72/*
81 * The idle loop on a S390... 73 * The idle loop on a S390...
82 */ 74 */
@@ -149,6 +141,7 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
149 return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 141 return do_fork(flags | CLONE_VM | CLONE_UNTRACED,
150 0, &regs, 0, NULL, NULL); 142 0, &regs, 0, NULL, NULL);
151} 143}
144EXPORT_SYMBOL(kernel_thread);
152 145
153/* 146/*
154 * Free current thread data structures etc.. 147 * Free current thread data structures etc..
@@ -168,34 +161,35 @@ void release_thread(struct task_struct *dead_task)
168} 161}
169 162
170int copy_thread(int nr, unsigned long clone_flags, unsigned long new_stackp, 163int copy_thread(int nr, unsigned long clone_flags, unsigned long new_stackp,
171 unsigned long unused, 164 unsigned long unused,
172 struct task_struct * p, struct pt_regs * regs) 165 struct task_struct *p, struct pt_regs *regs)
173{ 166{
174 struct fake_frame 167 struct thread_info *ti;
175 { 168 struct fake_frame
176 struct stack_frame sf; 169 {
177 struct pt_regs childregs; 170 struct stack_frame sf;
178 } *frame; 171 struct pt_regs childregs;
179 172 } *frame;
180 frame = container_of(task_pt_regs(p), struct fake_frame, childregs); 173
181 p->thread.ksp = (unsigned long) frame; 174 frame = container_of(task_pt_regs(p), struct fake_frame, childregs);
175 p->thread.ksp = (unsigned long) frame;
182 /* Store access registers to kernel stack of new process. */ 176 /* Store access registers to kernel stack of new process. */
183 frame->childregs = *regs; 177 frame->childregs = *regs;
184 frame->childregs.gprs[2] = 0; /* child returns 0 on fork. */ 178 frame->childregs.gprs[2] = 0; /* child returns 0 on fork. */
185 frame->childregs.gprs[15] = new_stackp; 179 frame->childregs.gprs[15] = new_stackp;
186 frame->sf.back_chain = 0; 180 frame->sf.back_chain = 0;
187 181
188 /* new return point is ret_from_fork */ 182 /* new return point is ret_from_fork */
189 frame->sf.gprs[8] = (unsigned long) ret_from_fork; 183 frame->sf.gprs[8] = (unsigned long) ret_from_fork;
190 184
191 /* fake return stack for resume(), don't go back to schedule */ 185 /* fake return stack for resume(), don't go back to schedule */
192 frame->sf.gprs[9] = (unsigned long) frame; 186 frame->sf.gprs[9] = (unsigned long) frame;
193 187
194 /* Save access registers to new thread structure. */ 188 /* Save access registers to new thread structure. */
195 save_access_regs(&p->thread.acrs[0]); 189 save_access_regs(&p->thread.acrs[0]);
196 190
197#ifndef CONFIG_64BIT 191#ifndef CONFIG_64BIT
198 /* 192 /*
199 * save fprs to current->thread.fp_regs to merge them with 193 * save fprs to current->thread.fp_regs to merge them with
200 * the emulated registers and then copy the result to the child. 194 * the emulated registers and then copy the result to the child.
201 */ 195 */
@@ -220,10 +214,13 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long new_stackp,
220#endif /* CONFIG_64BIT */ 214#endif /* CONFIG_64BIT */
221 /* start new process with ar4 pointing to the correct address space */ 215 /* start new process with ar4 pointing to the correct address space */
222 p->thread.mm_segment = get_fs(); 216 p->thread.mm_segment = get_fs();
223 /* Don't copy debug registers */ 217 /* Don't copy debug registers */
224 memset(&p->thread.per_info,0,sizeof(p->thread.per_info)); 218 memset(&p->thread.per_info, 0, sizeof(p->thread.per_info));
225 219 /* Initialize per thread user and system timer values */
226 return 0; 220 ti = task_thread_info(p);
221 ti->user_timer = 0;
222 ti->system_timer = 0;
223 return 0;
227} 224}
228 225
229SYSCALL_DEFINE0(fork) 226SYSCALL_DEFINE0(fork)
@@ -311,7 +308,7 @@ out:
311int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs) 308int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs)
312{ 309{
313#ifndef CONFIG_64BIT 310#ifndef CONFIG_64BIT
314 /* 311 /*
315 * save fprs to current->thread.fp_regs to merge them with 312 * save fprs to current->thread.fp_regs to merge them with
316 * the emulated registers and then copy the result to the dump. 313 * the emulated registers and then copy the result to the dump.
317 */ 314 */
@@ -322,6 +319,7 @@ int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs)
322#endif /* CONFIG_64BIT */ 319#endif /* CONFIG_64BIT */
323 return 1; 320 return 1;
324} 321}
322EXPORT_SYMBOL(dump_fpu);
325 323
326unsigned long get_wchan(struct task_struct *p) 324unsigned long get_wchan(struct task_struct *p)
327{ 325{
@@ -346,4 +344,3 @@ unsigned long get_wchan(struct task_struct *p)
346 } 344 }
347 return 0; 345 return 0;
348} 346}
349
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 82c1872cfe80..802c8ab247f3 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -18,10 +18,11 @@
18#include <asm/lowcore.h> 18#include <asm/lowcore.h>
19#include <asm/param.h> 19#include <asm/param.h>
20 20
21void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo) 21void __cpuinit print_cpu_info(void)
22{ 22{
23 pr_info("Processor %d started, address %d, identification %06X\n", 23 pr_info("Processor %d started, address %d, identification %06X\n",
24 cpuinfo->cpu_nr, cpuinfo->cpu_addr, cpuinfo->cpu_id.ident); 24 S390_lowcore.cpu_nr, S390_lowcore.cpu_addr,
25 S390_lowcore.cpu_id.ident);
25} 26}
26 27
27/* 28/*
@@ -30,48 +31,46 @@ void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo)
30 31
31static int show_cpuinfo(struct seq_file *m, void *v) 32static int show_cpuinfo(struct seq_file *m, void *v)
32{ 33{
33 static const char *hwcap_str[8] = { 34 static const char *hwcap_str[9] = {
34 "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp", 35 "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
35 "edat" 36 "edat", "etf3eh"
36 }; 37 };
37 struct cpuinfo_S390 *cpuinfo; 38 struct _lowcore *lc;
38 unsigned long n = (unsigned long) v - 1; 39 unsigned long n = (unsigned long) v - 1;
39 int i; 40 int i;
40 41
41 s390_adjust_jiffies(); 42 s390_adjust_jiffies();
42 preempt_disable(); 43 preempt_disable();
43 if (!n) { 44 if (!n) {
44 seq_printf(m, "vendor_id : IBM/S390\n" 45 seq_printf(m, "vendor_id : IBM/S390\n"
45 "# processors : %i\n" 46 "# processors : %i\n"
46 "bogomips per cpu: %lu.%02lu\n", 47 "bogomips per cpu: %lu.%02lu\n",
47 num_online_cpus(), loops_per_jiffy/(500000/HZ), 48 num_online_cpus(), loops_per_jiffy/(500000/HZ),
48 (loops_per_jiffy/(5000/HZ))%100); 49 (loops_per_jiffy/(5000/HZ))%100);
49 seq_puts(m, "features\t: "); 50 seq_puts(m, "features\t: ");
50 for (i = 0; i < 8; i++) 51 for (i = 0; i < 9; i++)
51 if (hwcap_str[i] && (elf_hwcap & (1UL << i))) 52 if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
52 seq_printf(m, "%s ", hwcap_str[i]); 53 seq_printf(m, "%s ", hwcap_str[i]);
53 seq_puts(m, "\n"); 54 seq_puts(m, "\n");
54 } 55 }
55 56
56 if (cpu_online(n)) { 57 if (cpu_online(n)) {
57#ifdef CONFIG_SMP 58#ifdef CONFIG_SMP
58 if (smp_processor_id() == n) 59 lc = (smp_processor_id() == n) ?
59 cpuinfo = &S390_lowcore.cpu_data; 60 &S390_lowcore : lowcore_ptr[n];
60 else
61 cpuinfo = &lowcore_ptr[n]->cpu_data;
62#else 61#else
63 cpuinfo = &S390_lowcore.cpu_data; 62 lc = &S390_lowcore;
64#endif 63#endif
65 seq_printf(m, "processor %li: " 64 seq_printf(m, "processor %li: "
66 "version = %02X, " 65 "version = %02X, "
67 "identification = %06X, " 66 "identification = %06X, "
68 "machine = %04X\n", 67 "machine = %04X\n",
69 n, cpuinfo->cpu_id.version, 68 n, lc->cpu_id.version,
70 cpuinfo->cpu_id.ident, 69 lc->cpu_id.ident,
71 cpuinfo->cpu_id.machine); 70 lc->cpu_id.machine);
72 } 71 }
73 preempt_enable(); 72 preempt_enable();
74 return 0; 73 return 0;
75} 74}
76 75
77static void *c_start(struct seq_file *m, loff_t *pos) 76static void *c_start(struct seq_file *m, loff_t *pos)
diff --git a/arch/s390/kernel/reipl64.S b/arch/s390/kernel/reipl64.S
index c41930499a5f..774147824c3d 100644
--- a/arch/s390/kernel/reipl64.S
+++ b/arch/s390/kernel/reipl64.S
@@ -1,10 +1,7 @@
1/* 1/*
2 * arch/s390/kernel/reipl.S 2 * Copyright IBM Corp 2000,2009
3 * 3 * Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>,
4 * S390 version 4 * Denis Joseph Barrow,
5 * Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
6 * Author(s): Holger Smolinski (Holger.Smolinski@de.ibm.com)
7 Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
8 */ 5 */
9 6
10#include <asm/lowcore.h> 7#include <asm/lowcore.h>
@@ -30,7 +27,7 @@ do_reipl_asm: basr %r13,0
30 mvc __LC_PREFIX_SAVE_AREA-0x1000(4,%r1),0(%r10) 27 mvc __LC_PREFIX_SAVE_AREA-0x1000(4,%r1),0(%r10)
31 stfpc __LC_FP_CREG_SAVE_AREA-0x1000(%r1) 28 stfpc __LC_FP_CREG_SAVE_AREA-0x1000(%r1)
32 stckc .Lclkcmp-.Lpg0(%r13) 29 stckc .Lclkcmp-.Lpg0(%r13)
33 mvc __LC_CLOCK_COMP_SAVE_AREA-0x1000(8,%r1),.Lclkcmp-.Lpg0(%r13) 30 mvc __LC_CLOCK_COMP_SAVE_AREA-0x1000(7,%r1),.Lclkcmp-.Lpg0(%r13)
34 stpt __LC_CPU_TIMER_SAVE_AREA-0x1000(%r1) 31 stpt __LC_CPU_TIMER_SAVE_AREA-0x1000(%r1)
35 stg %r13, __LC_PSW_SAVE_AREA-0x1000+8(%r1) 32 stg %r13, __LC_PSW_SAVE_AREA-0x1000+8(%r1)
36 33
diff --git a/arch/s390/kernel/s390_ksyms.c b/arch/s390/kernel/s390_ksyms.c
index 46b90cb03707..656fcbb9bd83 100644
--- a/arch/s390/kernel/s390_ksyms.c
+++ b/arch/s390/kernel/s390_ksyms.c
@@ -1,49 +1,5 @@
1/*
2 * arch/s390/kernel/s390_ksyms.c
3 *
4 * S390 version
5 */
6#include <linux/highuid.h>
7#include <linux/module.h> 1#include <linux/module.h>
8#include <linux/mm.h>
9#include <linux/smp.h>
10#include <linux/syscalls.h>
11#include <linux/interrupt.h>
12#include <asm/checksum.h>
13#include <asm/cpcmd.h>
14#include <asm/delay.h>
15#include <asm/pgalloc.h>
16#include <asm/setup.h>
17#include <asm/ftrace.h> 2#include <asm/ftrace.h>
18#ifdef CONFIG_IP_MULTICAST
19#include <net/arp.h>
20#endif
21
22/*
23 * memory management
24 */
25EXPORT_SYMBOL(_oi_bitmap);
26EXPORT_SYMBOL(_ni_bitmap);
27EXPORT_SYMBOL(_zb_findmap);
28EXPORT_SYMBOL(_sb_findmap);
29
30/*
31 * binfmt_elf loader
32 */
33extern int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs);
34EXPORT_SYMBOL(dump_fpu);
35EXPORT_SYMBOL(empty_zero_page);
36
37/*
38 * misc.
39 */
40EXPORT_SYMBOL(machine_flags);
41EXPORT_SYMBOL(__udelay);
42EXPORT_SYMBOL(kernel_thread);
43EXPORT_SYMBOL(csum_fold);
44EXPORT_SYMBOL(console_mode);
45EXPORT_SYMBOL(console_devno);
46EXPORT_SYMBOL(console_irq);
47 3
48#ifdef CONFIG_FUNCTION_TRACER 4#ifdef CONFIG_FUNCTION_TRACER
49EXPORT_SYMBOL(_mcount); 5EXPORT_SYMBOL(_mcount);
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index c5cfb6185eac..06201b93cbbf 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -74,9 +74,17 @@ EXPORT_SYMBOL(uaccess);
74 * Machine setup.. 74 * Machine setup..
75 */ 75 */
76unsigned int console_mode = 0; 76unsigned int console_mode = 0;
77EXPORT_SYMBOL(console_mode);
78
77unsigned int console_devno = -1; 79unsigned int console_devno = -1;
80EXPORT_SYMBOL(console_devno);
81
78unsigned int console_irq = -1; 82unsigned int console_irq = -1;
83EXPORT_SYMBOL(console_irq);
84
79unsigned long machine_flags; 85unsigned long machine_flags;
86EXPORT_SYMBOL(machine_flags);
87
80unsigned long elf_hwcap = 0; 88unsigned long elf_hwcap = 0;
81char elf_platform[ELF_PLATFORM_SIZE]; 89char elf_platform[ELF_PLATFORM_SIZE];
82 90
@@ -86,6 +94,10 @@ volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */
86int __initdata memory_end_set; 94int __initdata memory_end_set;
87unsigned long __initdata memory_end; 95unsigned long __initdata memory_end;
88 96
97/* An array with a pointer to the lowcore of every CPU. */
98struct _lowcore *lowcore_ptr[NR_CPUS];
99EXPORT_SYMBOL(lowcore_ptr);
100
89/* 101/*
90 * This is set up by the setup-routine at boot-time 102 * This is set up by the setup-routine at boot-time
91 * for S390 need to find out, what we have to setup 103 * for S390 need to find out, what we have to setup
@@ -109,13 +121,10 @@ static struct resource data_resource = {
109 */ 121 */
110void __cpuinit cpu_init(void) 122void __cpuinit cpu_init(void)
111{ 123{
112 int addr = hard_smp_processor_id();
113
114 /* 124 /*
115 * Store processor id in lowcore (used e.g. in timer_interrupt) 125 * Store processor id in lowcore (used e.g. in timer_interrupt)
116 */ 126 */
117 get_cpu_id(&S390_lowcore.cpu_data.cpu_id); 127 get_cpu_id(&S390_lowcore.cpu_id);
118 S390_lowcore.cpu_data.cpu_addr = addr;
119 128
120 /* 129 /*
121 * Force FPU initialization: 130 * Force FPU initialization:
@@ -125,8 +134,7 @@ void __cpuinit cpu_init(void)
125 134
126 atomic_inc(&init_mm.mm_count); 135 atomic_inc(&init_mm.mm_count);
127 current->active_mm = &init_mm; 136 current->active_mm = &init_mm;
128 if (current->mm) 137 BUG_ON(current->mm);
129 BUG();
130 enter_lazy_tlb(&init_mm, current); 138 enter_lazy_tlb(&init_mm, current);
131} 139}
132 140
@@ -217,7 +225,7 @@ static void __init conmode_default(void)
217 } 225 }
218} 226}
219 227
220#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE) 228#ifdef CONFIG_ZFCPDUMP
221static void __init setup_zfcpdump(unsigned int console_devno) 229static void __init setup_zfcpdump(unsigned int console_devno)
222{ 230{
223 static char str[41]; 231 static char str[41];
@@ -289,11 +297,7 @@ static int __init early_parse_mem(char *p)
289early_param("mem", early_parse_mem); 297early_param("mem", early_parse_mem);
290 298
291#ifdef CONFIG_S390_SWITCH_AMODE 299#ifdef CONFIG_S390_SWITCH_AMODE
292#ifdef CONFIG_PGSTE
293unsigned int switch_amode = 1;
294#else
295unsigned int switch_amode = 0; 300unsigned int switch_amode = 0;
296#endif
297EXPORT_SYMBOL_GPL(switch_amode); 301EXPORT_SYMBOL_GPL(switch_amode);
298 302
299static int set_amode_and_uaccess(unsigned long user_amode, 303static int set_amode_and_uaccess(unsigned long user_amode,
@@ -414,7 +418,6 @@ setup_lowcore(void)
414 PSW_ADDR_AMODE | (unsigned long) mcck_int_handler; 418 PSW_ADDR_AMODE | (unsigned long) mcck_int_handler;
415 lc->io_new_psw.mask = psw_kernel_bits; 419 lc->io_new_psw.mask = psw_kernel_bits;
416 lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler; 420 lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler;
417 lc->ipl_device = S390_lowcore.ipl_device;
418 lc->clock_comparator = -1ULL; 421 lc->clock_comparator = -1ULL;
419 lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE; 422 lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE;
420 lc->async_stack = (unsigned long) 423 lc->async_stack = (unsigned long)
@@ -434,6 +437,7 @@ setup_lowcore(void)
434 lc->vdso_per_cpu_data = (unsigned long) &lc->paste[0]; 437 lc->vdso_per_cpu_data = (unsigned long) &lc->paste[0];
435#endif 438#endif
436 set_prefix((u32)(unsigned long) lc); 439 set_prefix((u32)(unsigned long) lc);
440 lowcore_ptr[0] = lc;
437} 441}
438 442
439static void __init 443static void __init
@@ -510,7 +514,7 @@ static void __init setup_memory_end(void)
510 unsigned long max_mem; 514 unsigned long max_mem;
511 int i; 515 int i;
512 516
513#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE) 517#ifdef CONFIG_ZFCPDUMP
514 if (ipl_info.type == IPL_TYPE_FCP_DUMP) { 518 if (ipl_info.type == IPL_TYPE_FCP_DUMP) {
515 memory_end = ZFCPDUMP_HSA_SIZE; 519 memory_end = ZFCPDUMP_HSA_SIZE;
516 memory_end_set = 1; 520 memory_end_set = 1;
@@ -677,7 +681,6 @@ setup_memory(void)
677static void __init setup_hwcaps(void) 681static void __init setup_hwcaps(void)
678{ 682{
679 static const int stfl_bits[6] = { 0, 2, 7, 17, 19, 21 }; 683 static const int stfl_bits[6] = { 0, 2, 7, 17, 19, 21 };
680 struct cpuinfo_S390 *cpuinfo = &S390_lowcore.cpu_data;
681 unsigned long long facility_list_extended; 684 unsigned long long facility_list_extended;
682 unsigned int facility_list; 685 unsigned int facility_list;
683 int i; 686 int i;
@@ -693,15 +696,22 @@ static void __init setup_hwcaps(void)
693 * Bit 17: the message-security assist is installed 696 * Bit 17: the message-security assist is installed
694 * Bit 19: the long-displacement facility is installed 697 * Bit 19: the long-displacement facility is installed
695 * Bit 21: the extended-immediate facility is installed 698 * Bit 21: the extended-immediate facility is installed
699 * Bit 22: extended-translation facility 3 is installed
700 * Bit 30: extended-translation facility 3 enhancement facility
696 * These get translated to: 701 * These get translated to:
697 * HWCAP_S390_ESAN3 bit 0, HWCAP_S390_ZARCH bit 1, 702 * HWCAP_S390_ESAN3 bit 0, HWCAP_S390_ZARCH bit 1,
698 * HWCAP_S390_STFLE bit 2, HWCAP_S390_MSA bit 3, 703 * HWCAP_S390_STFLE bit 2, HWCAP_S390_MSA bit 3,
699 * HWCAP_S390_LDISP bit 4, and HWCAP_S390_EIMM bit 5. 704 * HWCAP_S390_LDISP bit 4, HWCAP_S390_EIMM bit 5 and
705 * HWCAP_S390_ETF3EH bit 8 (22 && 30).
700 */ 706 */
701 for (i = 0; i < 6; i++) 707 for (i = 0; i < 6; i++)
702 if (facility_list & (1UL << (31 - stfl_bits[i]))) 708 if (facility_list & (1UL << (31 - stfl_bits[i])))
703 elf_hwcap |= 1UL << i; 709 elf_hwcap |= 1UL << i;
704 710
711 if ((facility_list & (1UL << (31 - 22)))
712 && (facility_list & (1UL << (31 - 30))))
713 elf_hwcap |= 1UL << 8;
714
705 /* 715 /*
706 * Check for additional facilities with store-facility-list-extended. 716 * Check for additional facilities with store-facility-list-extended.
707 * stfle stores doublewords (8 byte) with bit 1ULL<<63 as bit 0 717 * stfle stores doublewords (8 byte) with bit 1ULL<<63 as bit 0
@@ -710,20 +720,22 @@ static void __init setup_hwcaps(void)
710 * How many facility words are stored depends on the number of 720 * How many facility words are stored depends on the number of
711 * doublewords passed to the instruction. The additional facilites 721 * doublewords passed to the instruction. The additional facilites
712 * are: 722 * are:
713 * Bit 43: decimal floating point facility is installed 723 * Bit 42: decimal floating point facility is installed
724 * Bit 44: perform floating point operation facility is installed
714 * translated to: 725 * translated to:
715 * HWCAP_S390_DFP bit 6. 726 * HWCAP_S390_DFP bit 6 (42 && 44).
716 */ 727 */
717 if ((elf_hwcap & (1UL << 2)) && 728 if ((elf_hwcap & (1UL << 2)) &&
718 __stfle(&facility_list_extended, 1) > 0) { 729 __stfle(&facility_list_extended, 1) > 0) {
719 if (facility_list_extended & (1ULL << (64 - 43))) 730 if ((facility_list_extended & (1ULL << (63 - 42)))
731 && (facility_list_extended & (1ULL << (63 - 44))))
720 elf_hwcap |= 1UL << 6; 732 elf_hwcap |= 1UL << 6;
721 } 733 }
722 734
723 if (MACHINE_HAS_HPAGE) 735 if (MACHINE_HAS_HPAGE)
724 elf_hwcap |= 1UL << 7; 736 elf_hwcap |= 1UL << 7;
725 737
726 switch (cpuinfo->cpu_id.machine) { 738 switch (S390_lowcore.cpu_id.machine) {
727 case 0x9672: 739 case 0x9672:
728#if !defined(CONFIG_64BIT) 740#if !defined(CONFIG_64BIT)
729 default: /* Use "g5" as default for 31 bit kernels. */ 741 default: /* Use "g5" as default for 31 bit kernels. */
@@ -816,7 +828,7 @@ setup_arch(char **cmdline_p)
816 setup_lowcore(); 828 setup_lowcore();
817 829
818 cpu_init(); 830 cpu_init();
819 __cpu_logical_map[0] = S390_lowcore.cpu_data.cpu_addr; 831 __cpu_logical_map[0] = stap();
820 s390_init_cpu_topology(); 832 s390_init_cpu_topology();
821 833
822 /* 834 /*
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 2d337cbb9329..006ed5016eb4 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -32,6 +32,7 @@
32#include <linux/delay.h> 32#include <linux/delay.h>
33#include <linux/cache.h> 33#include <linux/cache.h>
34#include <linux/interrupt.h> 34#include <linux/interrupt.h>
35#include <linux/irqflags.h>
35#include <linux/cpu.h> 36#include <linux/cpu.h>
36#include <linux/timex.h> 37#include <linux/timex.h>
37#include <linux/bootmem.h> 38#include <linux/bootmem.h>
@@ -50,12 +51,6 @@
50#include <asm/vdso.h> 51#include <asm/vdso.h>
51#include "entry.h" 52#include "entry.h"
52 53
53/*
54 * An array with a pointer the lowcore of every CPU.
55 */
56struct _lowcore *lowcore_ptr[NR_CPUS];
57EXPORT_SYMBOL(lowcore_ptr);
58
59static struct task_struct *current_set[NR_CPUS]; 54static struct task_struct *current_set[NR_CPUS];
60 55
61static u8 smp_cpu_type; 56static u8 smp_cpu_type;
@@ -81,9 +76,7 @@ void smp_send_stop(void)
81 76
82 /* Disable all interrupts/machine checks */ 77 /* Disable all interrupts/machine checks */
83 __load_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK); 78 __load_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK);
84 79 trace_hardirqs_off();
85 /* write magic number to zero page (absolute 0) */
86 lowcore_ptr[smp_processor_id()]->panic_magic = __PANIC_MAGIC;
87 80
88 /* stop all processors */ 81 /* stop all processors */
89 for_each_online_cpu(cpu) { 82 for_each_online_cpu(cpu) {
@@ -233,7 +226,7 @@ EXPORT_SYMBOL(smp_ctl_clear_bit);
233 */ 226 */
234#define CPU_INIT_NO 1 227#define CPU_INIT_NO 1
235 228
236#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE) 229#ifdef CONFIG_ZFCPDUMP
237 230
238/* 231/*
239 * zfcpdump_prefix_array holds prefix registers for the following scenario: 232 * zfcpdump_prefix_array holds prefix registers for the following scenario:
@@ -274,7 +267,7 @@ EXPORT_SYMBOL_GPL(zfcpdump_save_areas);
274 267
275static inline void smp_get_save_area(unsigned int cpu, unsigned int phy_cpu) { } 268static inline void smp_get_save_area(unsigned int cpu, unsigned int phy_cpu) { }
276 269
277#endif /* CONFIG_ZFCPDUMP || CONFIG_ZFCPDUMP_MODULE */ 270#endif /* CONFIG_ZFCPDUMP */
278 271
279static int cpu_stopped(int cpu) 272static int cpu_stopped(int cpu)
280{ 273{
@@ -304,8 +297,8 @@ static int smp_rescan_cpus_sigp(cpumask_t avail)
304{ 297{
305 int cpu_id, logical_cpu; 298 int cpu_id, logical_cpu;
306 299
307 logical_cpu = first_cpu(avail); 300 logical_cpu = cpumask_first(&avail);
308 if (logical_cpu == NR_CPUS) 301 if (logical_cpu >= nr_cpu_ids)
309 return 0; 302 return 0;
310 for (cpu_id = 0; cpu_id <= 65535; cpu_id++) { 303 for (cpu_id = 0; cpu_id <= 65535; cpu_id++) {
311 if (cpu_known(cpu_id)) 304 if (cpu_known(cpu_id))
@@ -316,8 +309,8 @@ static int smp_rescan_cpus_sigp(cpumask_t avail)
316 continue; 309 continue;
317 cpu_set(logical_cpu, cpu_present_map); 310 cpu_set(logical_cpu, cpu_present_map);
318 smp_cpu_state[logical_cpu] = CPU_STATE_CONFIGURED; 311 smp_cpu_state[logical_cpu] = CPU_STATE_CONFIGURED;
319 logical_cpu = next_cpu(logical_cpu, avail); 312 logical_cpu = cpumask_next(logical_cpu, &avail);
320 if (logical_cpu == NR_CPUS) 313 if (logical_cpu >= nr_cpu_ids)
321 break; 314 break;
322 } 315 }
323 return 0; 316 return 0;
@@ -329,8 +322,8 @@ static int smp_rescan_cpus_sclp(cpumask_t avail)
329 int cpu_id, logical_cpu, cpu; 322 int cpu_id, logical_cpu, cpu;
330 int rc; 323 int rc;
331 324
332 logical_cpu = first_cpu(avail); 325 logical_cpu = cpumask_first(&avail);
333 if (logical_cpu == NR_CPUS) 326 if (logical_cpu >= nr_cpu_ids)
334 return 0; 327 return 0;
335 info = kmalloc(sizeof(*info), GFP_KERNEL); 328 info = kmalloc(sizeof(*info), GFP_KERNEL);
336 if (!info) 329 if (!info)
@@ -351,8 +344,8 @@ static int smp_rescan_cpus_sclp(cpumask_t avail)
351 smp_cpu_state[logical_cpu] = CPU_STATE_STANDBY; 344 smp_cpu_state[logical_cpu] = CPU_STATE_STANDBY;
352 else 345 else
353 smp_cpu_state[logical_cpu] = CPU_STATE_CONFIGURED; 346 smp_cpu_state[logical_cpu] = CPU_STATE_CONFIGURED;
354 logical_cpu = next_cpu(logical_cpu, avail); 347 logical_cpu = cpumask_next(logical_cpu, &avail);
355 if (logical_cpu == NR_CPUS) 348 if (logical_cpu >= nr_cpu_ids)
356 break; 349 break;
357 } 350 }
358out: 351out:
@@ -379,7 +372,7 @@ static void __init smp_detect_cpus(void)
379 372
380 c_cpus = 1; 373 c_cpus = 1;
381 s_cpus = 0; 374 s_cpus = 0;
382 boot_cpu_addr = S390_lowcore.cpu_data.cpu_addr; 375 boot_cpu_addr = __cpu_logical_map[0];
383 info = kmalloc(sizeof(*info), GFP_KERNEL); 376 info = kmalloc(sizeof(*info), GFP_KERNEL);
384 if (!info) 377 if (!info)
385 panic("smp_detect_cpus failed to allocate memory\n"); 378 panic("smp_detect_cpus failed to allocate memory\n");
@@ -453,7 +446,7 @@ int __cpuinit start_secondary(void *cpuvoid)
453 /* Switch on interrupts */ 446 /* Switch on interrupts */
454 local_irq_enable(); 447 local_irq_enable();
455 /* Print info about this processor */ 448 /* Print info about this processor */
456 print_cpu_info(&S390_lowcore.cpu_data); 449 print_cpu_info();
457 /* cpu_idle will call schedule for us */ 450 /* cpu_idle will call schedule for us */
458 cpu_idle(); 451 cpu_idle();
459 return 0; 452 return 0;
@@ -515,7 +508,6 @@ out:
515 return -ENOMEM; 508 return -ENOMEM;
516} 509}
517 510
518#ifdef CONFIG_HOTPLUG_CPU
519static void smp_free_lowcore(int cpu) 511static void smp_free_lowcore(int cpu)
520{ 512{
521 struct _lowcore *lowcore; 513 struct _lowcore *lowcore;
@@ -534,7 +526,6 @@ static void smp_free_lowcore(int cpu)
534 free_pages((unsigned long) lowcore, lc_order); 526 free_pages((unsigned long) lowcore, lc_order);
535 lowcore_ptr[cpu] = NULL; 527 lowcore_ptr[cpu] = NULL;
536} 528}
537#endif /* CONFIG_HOTPLUG_CPU */
538 529
539/* Upping and downing of CPUs */ 530/* Upping and downing of CPUs */
540int __cpuinit __cpu_up(unsigned int cpu) 531int __cpuinit __cpu_up(unsigned int cpu)
@@ -543,16 +534,23 @@ int __cpuinit __cpu_up(unsigned int cpu)
543 struct _lowcore *cpu_lowcore; 534 struct _lowcore *cpu_lowcore;
544 struct stack_frame *sf; 535 struct stack_frame *sf;
545 sigp_ccode ccode; 536 sigp_ccode ccode;
537 u32 lowcore;
546 538
547 if (smp_cpu_state[cpu] != CPU_STATE_CONFIGURED) 539 if (smp_cpu_state[cpu] != CPU_STATE_CONFIGURED)
548 return -EIO; 540 return -EIO;
549 if (smp_alloc_lowcore(cpu)) 541 if (smp_alloc_lowcore(cpu))
550 return -ENOMEM; 542 return -ENOMEM;
551 543 do {
552 ccode = signal_processor_p((__u32)(unsigned long)(lowcore_ptr[cpu]), 544 ccode = signal_processor(cpu, sigp_initial_cpu_reset);
553 cpu, sigp_set_prefix); 545 if (ccode == sigp_busy)
554 if (ccode) 546 udelay(10);
555 return -EIO; 547 if (ccode == sigp_not_operational)
548 goto err_out;
549 } while (ccode == sigp_busy);
550
551 lowcore = (u32)(unsigned long)lowcore_ptr[cpu];
552 while (signal_processor_p(lowcore, cpu, sigp_set_prefix) == sigp_busy)
553 udelay(10);
556 554
557 idle = current_set[cpu]; 555 idle = current_set[cpu];
558 cpu_lowcore = lowcore_ptr[cpu]; 556 cpu_lowcore = lowcore_ptr[cpu];
@@ -571,9 +569,8 @@ int __cpuinit __cpu_up(unsigned int cpu)
571 : : "a" (&cpu_lowcore->access_regs_save_area) : "memory"); 569 : : "a" (&cpu_lowcore->access_regs_save_area) : "memory");
572 cpu_lowcore->percpu_offset = __per_cpu_offset[cpu]; 570 cpu_lowcore->percpu_offset = __per_cpu_offset[cpu];
573 cpu_lowcore->current_task = (unsigned long) idle; 571 cpu_lowcore->current_task = (unsigned long) idle;
574 cpu_lowcore->cpu_data.cpu_nr = cpu; 572 cpu_lowcore->cpu_nr = cpu;
575 cpu_lowcore->kernel_asce = S390_lowcore.kernel_asce; 573 cpu_lowcore->kernel_asce = S390_lowcore.kernel_asce;
576 cpu_lowcore->ipl_device = S390_lowcore.ipl_device;
577 eieio(); 574 eieio();
578 575
579 while (signal_processor(cpu, sigp_restart) == sigp_busy) 576 while (signal_processor(cpu, sigp_restart) == sigp_busy)
@@ -582,6 +579,10 @@ int __cpuinit __cpu_up(unsigned int cpu)
582 while (!cpu_online(cpu)) 579 while (!cpu_online(cpu))
583 cpu_relax(); 580 cpu_relax();
584 return 0; 581 return 0;
582
583err_out:
584 smp_free_lowcore(cpu);
585 return -EIO;
585} 586}
586 587
587static int __init setup_possible_cpus(char *s) 588static int __init setup_possible_cpus(char *s)
@@ -589,9 +590,8 @@ static int __init setup_possible_cpus(char *s)
589 int pcpus, cpu; 590 int pcpus, cpu;
590 591
591 pcpus = simple_strtoul(s, NULL, 0); 592 pcpus = simple_strtoul(s, NULL, 0);
592 cpu_possible_map = cpumask_of_cpu(0); 593 for (cpu = 0; cpu < pcpus && cpu < nr_cpu_ids; cpu++)
593 for (cpu = 1; cpu < pcpus && cpu < NR_CPUS; cpu++) 594 set_cpu_possible(cpu, true);
594 cpu_set(cpu, cpu_possible_map);
595 return 0; 595 return 0;
596} 596}
597early_param("possible_cpus", setup_possible_cpus); 597early_param("possible_cpus", setup_possible_cpus);
@@ -663,7 +663,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
663 /* request the 0x1201 emergency signal external interrupt */ 663 /* request the 0x1201 emergency signal external interrupt */
664 if (register_external_interrupt(0x1201, do_ext_call_interrupt) != 0) 664 if (register_external_interrupt(0x1201, do_ext_call_interrupt) != 0)
665 panic("Couldn't request external interrupt 0x1201"); 665 panic("Couldn't request external interrupt 0x1201");
666 print_cpu_info(&S390_lowcore.cpu_data); 666 print_cpu_info();
667 667
668 /* Reallocate current lowcore, but keep its contents. */ 668 /* Reallocate current lowcore, but keep its contents. */
669 lc_order = sizeof(long) == 8 ? 1 : 0; 669 lc_order = sizeof(long) == 8 ? 1 : 0;
diff --git a/arch/s390/kernel/sysinfo.c b/arch/s390/kernel/sysinfo.c
new file mode 100644
index 000000000000..b5e75e1061c8
--- /dev/null
+++ b/arch/s390/kernel/sysinfo.c
@@ -0,0 +1,428 @@
1/*
2 * Copyright IBM Corp. 2001, 2009
3 * Author(s): Ulrich Weigand <Ulrich.Weigand@de.ibm.com>,
4 * Martin Schwidefsky <schwidefsky@de.ibm.com>,
5 */
6
7#include <linux/kernel.h>
8#include <linux/mm.h>
9#include <linux/proc_fs.h>
10#include <linux/seq_file.h>
11#include <linux/init.h>
12#include <linux/delay.h>
13#include <linux/module.h>
14#include <asm/ebcdic.h>
15#include <asm/sysinfo.h>
16#include <asm/cpcmd.h>
17
18/* Sigh, math-emu. Don't ask. */
19#include <asm/sfp-util.h>
20#include <math-emu/soft-fp.h>
21#include <math-emu/single.h>
22
23static inline int stsi_0(void)
24{
25 int rc = stsi(NULL, 0, 0, 0);
26 return rc == -ENOSYS ? rc : (((unsigned int) rc) >> 28);
27}
28
29static int stsi_1_1_1(struct sysinfo_1_1_1 *info, char *page, int len)
30{
31 if (stsi(info, 1, 1, 1) == -ENOSYS)
32 return len;
33
34 EBCASC(info->manufacturer, sizeof(info->manufacturer));
35 EBCASC(info->type, sizeof(info->type));
36 EBCASC(info->model, sizeof(info->model));
37 EBCASC(info->sequence, sizeof(info->sequence));
38 EBCASC(info->plant, sizeof(info->plant));
39 EBCASC(info->model_capacity, sizeof(info->model_capacity));
40 EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap));
41 EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap));
42 len += sprintf(page + len, "Manufacturer: %-16.16s\n",
43 info->manufacturer);
44 len += sprintf(page + len, "Type: %-4.4s\n",
45 info->type);
46 if (info->model[0] != '\0')
47 /*
48 * Sigh: the model field has been renamed with System z9
49 * to model_capacity and a new model field has been added
50 * after the plant field. To avoid confusing older programs
51 * the "Model:" prints "model_capacity model" or just
52 * "model_capacity" if the model string is empty .
53 */
54 len += sprintf(page + len,
55 "Model: %-16.16s %-16.16s\n",
56 info->model_capacity, info->model);
57 else
58 len += sprintf(page + len, "Model: %-16.16s\n",
59 info->model_capacity);
60 len += sprintf(page + len, "Sequence Code: %-16.16s\n",
61 info->sequence);
62 len += sprintf(page + len, "Plant: %-4.4s\n",
63 info->plant);
64 len += sprintf(page + len, "Model Capacity: %-16.16s %08u\n",
65 info->model_capacity, *(u32 *) info->model_cap_rating);
66 if (info->model_perm_cap[0] != '\0')
67 len += sprintf(page + len,
68 "Model Perm. Capacity: %-16.16s %08u\n",
69 info->model_perm_cap,
70 *(u32 *) info->model_perm_cap_rating);
71 if (info->model_temp_cap[0] != '\0')
72 len += sprintf(page + len,
73 "Model Temp. Capacity: %-16.16s %08u\n",
74 info->model_temp_cap,
75 *(u32 *) info->model_temp_cap_rating);
76 return len;
77}
78
79static int stsi_1_2_2(struct sysinfo_1_2_2 *info, char *page, int len)
80{
81 struct sysinfo_1_2_2_extension *ext;
82 int i;
83
84 if (stsi(info, 1, 2, 2) == -ENOSYS)
85 return len;
86 ext = (struct sysinfo_1_2_2_extension *)
87 ((unsigned long) info + info->acc_offset);
88
89 len += sprintf(page + len, "\n");
90 len += sprintf(page + len, "CPUs Total: %d\n",
91 info->cpus_total);
92 len += sprintf(page + len, "CPUs Configured: %d\n",
93 info->cpus_configured);
94 len += sprintf(page + len, "CPUs Standby: %d\n",
95 info->cpus_standby);
96 len += sprintf(page + len, "CPUs Reserved: %d\n",
97 info->cpus_reserved);
98
99 if (info->format == 1) {
100 /*
101 * Sigh 2. According to the specification the alternate
102 * capability field is a 32 bit floating point number
103 * if the higher order 8 bits are not zero. Printing
104 * a floating point number in the kernel is a no-no,
105 * always print the number as 32 bit unsigned integer.
106 * The user-space needs to know about the strange
107 * encoding of the alternate cpu capability.
108 */
109 len += sprintf(page + len, "Capability: %u %u\n",
110 info->capability, ext->alt_capability);
111 for (i = 2; i <= info->cpus_total; i++)
112 len += sprintf(page + len,
113 "Adjustment %02d-way: %u %u\n",
114 i, info->adjustment[i-2],
115 ext->alt_adjustment[i-2]);
116
117 } else {
118 len += sprintf(page + len, "Capability: %u\n",
119 info->capability);
120 for (i = 2; i <= info->cpus_total; i++)
121 len += sprintf(page + len,
122 "Adjustment %02d-way: %u\n",
123 i, info->adjustment[i-2]);
124 }
125
126 if (info->secondary_capability != 0)
127 len += sprintf(page + len, "Secondary Capability: %d\n",
128 info->secondary_capability);
129 return len;
130}
131
132static int stsi_2_2_2(struct sysinfo_2_2_2 *info, char *page, int len)
133{
134 if (stsi(info, 2, 2, 2) == -ENOSYS)
135 return len;
136
137 EBCASC(info->name, sizeof(info->name));
138
139 len += sprintf(page + len, "\n");
140 len += sprintf(page + len, "LPAR Number: %d\n",
141 info->lpar_number);
142
143 len += sprintf(page + len, "LPAR Characteristics: ");
144 if (info->characteristics & LPAR_CHAR_DEDICATED)
145 len += sprintf(page + len, "Dedicated ");
146 if (info->characteristics & LPAR_CHAR_SHARED)
147 len += sprintf(page + len, "Shared ");
148 if (info->characteristics & LPAR_CHAR_LIMITED)
149 len += sprintf(page + len, "Limited ");
150 len += sprintf(page + len, "\n");
151
152 len += sprintf(page + len, "LPAR Name: %-8.8s\n",
153 info->name);
154
155 len += sprintf(page + len, "LPAR Adjustment: %d\n",
156 info->caf);
157
158 len += sprintf(page + len, "LPAR CPUs Total: %d\n",
159 info->cpus_total);
160 len += sprintf(page + len, "LPAR CPUs Configured: %d\n",
161 info->cpus_configured);
162 len += sprintf(page + len, "LPAR CPUs Standby: %d\n",
163 info->cpus_standby);
164 len += sprintf(page + len, "LPAR CPUs Reserved: %d\n",
165 info->cpus_reserved);
166 len += sprintf(page + len, "LPAR CPUs Dedicated: %d\n",
167 info->cpus_dedicated);
168 len += sprintf(page + len, "LPAR CPUs Shared: %d\n",
169 info->cpus_shared);
170 return len;
171}
172
173static int stsi_3_2_2(struct sysinfo_3_2_2 *info, char *page, int len)
174{
175 int i;
176
177 if (stsi(info, 3, 2, 2) == -ENOSYS)
178 return len;
179 for (i = 0; i < info->count; i++) {
180 EBCASC(info->vm[i].name, sizeof(info->vm[i].name));
181 EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi));
182 len += sprintf(page + len, "\n");
183 len += sprintf(page + len, "VM%02d Name: %-8.8s\n",
184 i, info->vm[i].name);
185 len += sprintf(page + len, "VM%02d Control Program: %-16.16s\n",
186 i, info->vm[i].cpi);
187
188 len += sprintf(page + len, "VM%02d Adjustment: %d\n",
189 i, info->vm[i].caf);
190
191 len += sprintf(page + len, "VM%02d CPUs Total: %d\n",
192 i, info->vm[i].cpus_total);
193 len += sprintf(page + len, "VM%02d CPUs Configured: %d\n",
194 i, info->vm[i].cpus_configured);
195 len += sprintf(page + len, "VM%02d CPUs Standby: %d\n",
196 i, info->vm[i].cpus_standby);
197 len += sprintf(page + len, "VM%02d CPUs Reserved: %d\n",
198 i, info->vm[i].cpus_reserved);
199 }
200 return len;
201}
202
203static int proc_read_sysinfo(char *page, char **start,
204 off_t off, int count,
205 int *eof, void *data)
206{
207 unsigned long info = get_zeroed_page(GFP_KERNEL);
208 int level, len;
209
210 if (!info)
211 return 0;
212
213 len = 0;
214 level = stsi_0();
215 if (level >= 1)
216 len = stsi_1_1_1((struct sysinfo_1_1_1 *) info, page, len);
217
218 if (level >= 1)
219 len = stsi_1_2_2((struct sysinfo_1_2_2 *) info, page, len);
220
221 if (level >= 2)
222 len = stsi_2_2_2((struct sysinfo_2_2_2 *) info, page, len);
223
224 if (level >= 3)
225 len = stsi_3_2_2((struct sysinfo_3_2_2 *) info, page, len);
226
227 free_page(info);
228 return len;
229}
230
231static __init int create_proc_sysinfo(void)
232{
233 create_proc_read_entry("sysinfo", 0444, NULL,
234 proc_read_sysinfo, NULL);
235 return 0;
236}
237device_initcall(create_proc_sysinfo);
238
239/*
240 * Service levels interface.
241 */
242
243static DECLARE_RWSEM(service_level_sem);
244static LIST_HEAD(service_level_list);
245
246int register_service_level(struct service_level *slr)
247{
248 struct service_level *ptr;
249
250 down_write(&service_level_sem);
251 list_for_each_entry(ptr, &service_level_list, list)
252 if (ptr == slr) {
253 up_write(&service_level_sem);
254 return -EEXIST;
255 }
256 list_add_tail(&slr->list, &service_level_list);
257 up_write(&service_level_sem);
258 return 0;
259}
260EXPORT_SYMBOL(register_service_level);
261
262int unregister_service_level(struct service_level *slr)
263{
264 struct service_level *ptr, *next;
265 int rc = -ENOENT;
266
267 down_write(&service_level_sem);
268 list_for_each_entry_safe(ptr, next, &service_level_list, list) {
269 if (ptr != slr)
270 continue;
271 list_del(&ptr->list);
272 rc = 0;
273 break;
274 }
275 up_write(&service_level_sem);
276 return rc;
277}
278EXPORT_SYMBOL(unregister_service_level);
279
280static void *service_level_start(struct seq_file *m, loff_t *pos)
281{
282 down_read(&service_level_sem);
283 return seq_list_start(&service_level_list, *pos);
284}
285
286static void *service_level_next(struct seq_file *m, void *p, loff_t *pos)
287{
288 return seq_list_next(p, &service_level_list, pos);
289}
290
291static void service_level_stop(struct seq_file *m, void *p)
292{
293 up_read(&service_level_sem);
294}
295
296static int service_level_show(struct seq_file *m, void *p)
297{
298 struct service_level *slr;
299
300 slr = list_entry(p, struct service_level, list);
301 slr->seq_print(m, slr);
302 return 0;
303}
304
305static const struct seq_operations service_level_seq_ops = {
306 .start = service_level_start,
307 .next = service_level_next,
308 .stop = service_level_stop,
309 .show = service_level_show
310};
311
312static int service_level_open(struct inode *inode, struct file *file)
313{
314 return seq_open(file, &service_level_seq_ops);
315}
316
317static const struct file_operations service_level_ops = {
318 .open = service_level_open,
319 .read = seq_read,
320 .llseek = seq_lseek,
321 .release = seq_release
322};
323
324static void service_level_vm_print(struct seq_file *m,
325 struct service_level *slr)
326{
327 char *query_buffer, *str;
328
329 query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA);
330 if (!query_buffer)
331 return;
332 cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL);
333 str = strchr(query_buffer, '\n');
334 if (str)
335 *str = 0;
336 seq_printf(m, "VM: %s\n", query_buffer);
337 kfree(query_buffer);
338}
339
340static struct service_level service_level_vm = {
341 .seq_print = service_level_vm_print
342};
343
344static __init int create_proc_service_level(void)
345{
346 proc_create("service_levels", 0, NULL, &service_level_ops);
347 if (MACHINE_IS_VM)
348 register_service_level(&service_level_vm);
349 return 0;
350}
351subsys_initcall(create_proc_service_level);
352
353/*
354 * Bogomips calculation based on cpu capability.
355 */
356int get_cpu_capability(unsigned int *capability)
357{
358 struct sysinfo_1_2_2 *info;
359 int rc;
360
361 info = (void *) get_zeroed_page(GFP_KERNEL);
362 if (!info)
363 return -ENOMEM;
364 rc = stsi(info, 1, 2, 2);
365 if (rc == -ENOSYS)
366 goto out;
367 rc = 0;
368 *capability = info->capability;
369out:
370 free_page((unsigned long) info);
371 return rc;
372}
373
374/*
375 * CPU capability might have changed. Therefore recalculate loops_per_jiffy.
376 */
377void s390_adjust_jiffies(void)
378{
379 struct sysinfo_1_2_2 *info;
380 const unsigned int fmil = 0x4b189680; /* 1e7 as 32-bit float. */
381 FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
382 FP_DECL_EX;
383 unsigned int capability;
384
385 info = (void *) get_zeroed_page(GFP_KERNEL);
386 if (!info)
387 return;
388
389 if (stsi(info, 1, 2, 2) != -ENOSYS) {
390 /*
391 * Major sigh. The cpu capability encoding is "special".
392 * If the first 9 bits of info->capability are 0 then it
393 * is a 32 bit unsigned integer in the range 0 .. 2^23.
394 * If the first 9 bits are != 0 then it is a 32 bit float.
395 * In addition a lower value indicates a proportionally
396 * higher cpu capacity. Bogomips are the other way round.
397 * To get to a halfway suitable number we divide 1e7
398 * by the cpu capability number. Yes, that means a floating
399 * point division .. math-emu here we come :-)
400 */
401 FP_UNPACK_SP(SA, &fmil);
402 if ((info->capability >> 23) == 0)
403 FP_FROM_INT_S(SB, info->capability, 32, int);
404 else
405 FP_UNPACK_SP(SB, &info->capability);
406 FP_DIV_S(SR, SA, SB);
407 FP_TO_INT_S(capability, SR, 32, 0);
408 } else
409 /*
410 * Really old machine without stsi block for basic
411 * cpu information. Report 42.0 bogomips.
412 */
413 capability = 42;
414 loops_per_jiffy = capability * (500000/HZ);
415 free_page((unsigned long) info);
416}
417
418/*
419 * calibrate the delay loop
420 */
421void __cpuinit calibrate_delay(void)
422{
423 s390_adjust_jiffies();
424 /* Print the good old Bogomips line .. */
425 printk(KERN_DEBUG "Calibrating delay loop (skipped)... "
426 "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ),
427 (loops_per_jiffy/(5000/HZ)) % 100);
428}
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index fc468cae4460..f72d41068dc2 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -331,6 +331,7 @@ static unsigned long long adjust_time(unsigned long long old,
331} 331}
332 332
333static DEFINE_PER_CPU(atomic_t, clock_sync_word); 333static DEFINE_PER_CPU(atomic_t, clock_sync_word);
334static DEFINE_MUTEX(clock_sync_mutex);
334static unsigned long clock_sync_flags; 335static unsigned long clock_sync_flags;
335 336
336#define CLOCK_SYNC_HAS_ETR 0 337#define CLOCK_SYNC_HAS_ETR 0
@@ -394,6 +395,20 @@ static void enable_sync_clock(void)
394 atomic_set_mask(0x80000000, sw_ptr); 395 atomic_set_mask(0x80000000, sw_ptr);
395} 396}
396 397
398/*
399 * Function to check if the clock is in sync.
400 */
401static inline int check_sync_clock(void)
402{
403 atomic_t *sw_ptr;
404 int rc;
405
406 sw_ptr = &get_cpu_var(clock_sync_word);
407 rc = (atomic_read(sw_ptr) & 0x80000000U) != 0;
408 put_cpu_var(clock_sync_sync);
409 return rc;
410}
411
397/* Single threaded workqueue used for etr and stp sync events */ 412/* Single threaded workqueue used for etr and stp sync events */
398static struct workqueue_struct *time_sync_wq; 413static struct workqueue_struct *time_sync_wq;
399 414
@@ -485,6 +500,8 @@ static void etr_reset(void)
485 if (etr_setr(&etr_eacr) == 0) { 500 if (etr_setr(&etr_eacr) == 0) {
486 etr_tolec = get_clock(); 501 etr_tolec = get_clock();
487 set_bit(CLOCK_SYNC_HAS_ETR, &clock_sync_flags); 502 set_bit(CLOCK_SYNC_HAS_ETR, &clock_sync_flags);
503 if (etr_port0_online && etr_port1_online)
504 set_bit(CLOCK_SYNC_ETR, &clock_sync_flags);
488 } else if (etr_port0_online || etr_port1_online) { 505 } else if (etr_port0_online || etr_port1_online) {
489 pr_warning("The real or virtual hardware system does " 506 pr_warning("The real or virtual hardware system does "
490 "not provide an ETR interface\n"); 507 "not provide an ETR interface\n");
@@ -533,8 +550,7 @@ void etr_switch_to_local(void)
533{ 550{
534 if (!etr_eacr.sl) 551 if (!etr_eacr.sl)
535 return; 552 return;
536 if (test_bit(CLOCK_SYNC_ETR, &clock_sync_flags)) 553 disable_sync_clock(NULL);
537 disable_sync_clock(NULL);
538 set_bit(ETR_EVENT_SWITCH_LOCAL, &etr_events); 554 set_bit(ETR_EVENT_SWITCH_LOCAL, &etr_events);
539 queue_work(time_sync_wq, &etr_work); 555 queue_work(time_sync_wq, &etr_work);
540} 556}
@@ -549,8 +565,7 @@ void etr_sync_check(void)
549{ 565{
550 if (!etr_eacr.es) 566 if (!etr_eacr.es)
551 return; 567 return;
552 if (test_bit(CLOCK_SYNC_ETR, &clock_sync_flags)) 568 disable_sync_clock(NULL);
553 disable_sync_clock(NULL);
554 set_bit(ETR_EVENT_SYNC_CHECK, &etr_events); 569 set_bit(ETR_EVENT_SYNC_CHECK, &etr_events);
555 queue_work(time_sync_wq, &etr_work); 570 queue_work(time_sync_wq, &etr_work);
556} 571}
@@ -914,7 +929,7 @@ static struct etr_eacr etr_handle_update(struct etr_aib *aib,
914 * Do not try to get the alternate port aib if the clock 929 * Do not try to get the alternate port aib if the clock
915 * is not in sync yet. 930 * is not in sync yet.
916 */ 931 */
917 if (!test_bit(CLOCK_SYNC_STP, &clock_sync_flags) && !eacr.es) 932 if (!check_sync_clock())
918 return eacr; 933 return eacr;
919 934
920 /* 935 /*
@@ -997,7 +1012,6 @@ static void etr_work_fn(struct work_struct *work)
997 on_each_cpu(disable_sync_clock, NULL, 1); 1012 on_each_cpu(disable_sync_clock, NULL, 1);
998 del_timer_sync(&etr_timer); 1013 del_timer_sync(&etr_timer);
999 etr_update_eacr(eacr); 1014 etr_update_eacr(eacr);
1000 clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags);
1001 goto out_unlock; 1015 goto out_unlock;
1002 } 1016 }
1003 1017
@@ -1071,18 +1085,13 @@ static void etr_work_fn(struct work_struct *work)
1071 /* Both ports not usable. */ 1085 /* Both ports not usable. */
1072 eacr.es = eacr.sl = 0; 1086 eacr.es = eacr.sl = 0;
1073 sync_port = -1; 1087 sync_port = -1;
1074 clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags);
1075 } 1088 }
1076 1089
1077 if (!test_bit(CLOCK_SYNC_ETR, &clock_sync_flags))
1078 eacr.es = 0;
1079
1080 /* 1090 /*
1081 * If the clock is in sync just update the eacr and return. 1091 * If the clock is in sync just update the eacr and return.
1082 * If there is no valid sync port wait for a port update. 1092 * If there is no valid sync port wait for a port update.
1083 */ 1093 */
1084 if (test_bit(CLOCK_SYNC_STP, &clock_sync_flags) || 1094 if (check_sync_clock() || sync_port < 0) {
1085 eacr.es || sync_port < 0) {
1086 etr_update_eacr(eacr); 1095 etr_update_eacr(eacr);
1087 etr_set_tolec_timeout(now); 1096 etr_set_tolec_timeout(now);
1088 goto out_unlock; 1097 goto out_unlock;
@@ -1103,13 +1112,11 @@ static void etr_work_fn(struct work_struct *work)
1103 * and set up a timer to try again after 0.5 seconds 1112 * and set up a timer to try again after 0.5 seconds
1104 */ 1113 */
1105 etr_update_eacr(eacr); 1114 etr_update_eacr(eacr);
1106 set_bit(CLOCK_SYNC_ETR, &clock_sync_flags);
1107 if (now < etr_tolec + (1600000 << 12) || 1115 if (now < etr_tolec + (1600000 << 12) ||
1108 etr_sync_clock_stop(&aib, sync_port) != 0) { 1116 etr_sync_clock_stop(&aib, sync_port) != 0) {
1109 /* Sync failed. Try again in 1/2 second. */ 1117 /* Sync failed. Try again in 1/2 second. */
1110 eacr.es = 0; 1118 eacr.es = 0;
1111 etr_update_eacr(eacr); 1119 etr_update_eacr(eacr);
1112 clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags);
1113 etr_set_sync_timeout(); 1120 etr_set_sync_timeout();
1114 } else 1121 } else
1115 etr_set_tolec_timeout(now); 1122 etr_set_tolec_timeout(now);
@@ -1191,19 +1198,30 @@ static ssize_t etr_online_store(struct sys_device *dev,
1191 return -EINVAL; 1198 return -EINVAL;
1192 if (!test_bit(CLOCK_SYNC_HAS_ETR, &clock_sync_flags)) 1199 if (!test_bit(CLOCK_SYNC_HAS_ETR, &clock_sync_flags))
1193 return -EOPNOTSUPP; 1200 return -EOPNOTSUPP;
1201 mutex_lock(&clock_sync_mutex);
1194 if (dev == &etr_port0_dev) { 1202 if (dev == &etr_port0_dev) {
1195 if (etr_port0_online == value) 1203 if (etr_port0_online == value)
1196 return count; /* Nothing to do. */ 1204 goto out; /* Nothing to do. */
1197 etr_port0_online = value; 1205 etr_port0_online = value;
1206 if (etr_port0_online && etr_port1_online)
1207 set_bit(CLOCK_SYNC_ETR, &clock_sync_flags);
1208 else
1209 clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags);
1198 set_bit(ETR_EVENT_PORT0_CHANGE, &etr_events); 1210 set_bit(ETR_EVENT_PORT0_CHANGE, &etr_events);
1199 queue_work(time_sync_wq, &etr_work); 1211 queue_work(time_sync_wq, &etr_work);
1200 } else { 1212 } else {
1201 if (etr_port1_online == value) 1213 if (etr_port1_online == value)
1202 return count; /* Nothing to do. */ 1214 goto out; /* Nothing to do. */
1203 etr_port1_online = value; 1215 etr_port1_online = value;
1216 if (etr_port0_online && etr_port1_online)
1217 set_bit(CLOCK_SYNC_ETR, &clock_sync_flags);
1218 else
1219 clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags);
1204 set_bit(ETR_EVENT_PORT1_CHANGE, &etr_events); 1220 set_bit(ETR_EVENT_PORT1_CHANGE, &etr_events);
1205 queue_work(time_sync_wq, &etr_work); 1221 queue_work(time_sync_wq, &etr_work);
1206 } 1222 }
1223out:
1224 mutex_unlock(&clock_sync_mutex);
1207 return count; 1225 return count;
1208} 1226}
1209 1227
@@ -1471,8 +1489,6 @@ static void stp_timing_alert(struct stp_irq_parm *intparm)
1471 */ 1489 */
1472void stp_sync_check(void) 1490void stp_sync_check(void)
1473{ 1491{
1474 if (!test_bit(CLOCK_SYNC_STP, &clock_sync_flags))
1475 return;
1476 disable_sync_clock(NULL); 1492 disable_sync_clock(NULL);
1477 queue_work(time_sync_wq, &stp_work); 1493 queue_work(time_sync_wq, &stp_work);
1478} 1494}
@@ -1485,8 +1501,6 @@ void stp_sync_check(void)
1485 */ 1501 */
1486void stp_island_check(void) 1502void stp_island_check(void)
1487{ 1503{
1488 if (!test_bit(CLOCK_SYNC_STP, &clock_sync_flags))
1489 return;
1490 disable_sync_clock(NULL); 1504 disable_sync_clock(NULL);
1491 queue_work(time_sync_wq, &stp_work); 1505 queue_work(time_sync_wq, &stp_work);
1492} 1506}
@@ -1513,10 +1527,6 @@ static int stp_sync_clock(void *data)
1513 1527
1514 enable_sync_clock(); 1528 enable_sync_clock();
1515 1529
1516 set_bit(CLOCK_SYNC_STP, &clock_sync_flags);
1517 if (test_and_clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags))
1518 queue_work(time_sync_wq, &etr_work);
1519
1520 rc = 0; 1530 rc = 0;
1521 if (stp_info.todoff[0] || stp_info.todoff[1] || 1531 if (stp_info.todoff[0] || stp_info.todoff[1] ||
1522 stp_info.todoff[2] || stp_info.todoff[3] || 1532 stp_info.todoff[2] || stp_info.todoff[3] ||
@@ -1535,9 +1545,6 @@ static int stp_sync_clock(void *data)
1535 if (rc) { 1545 if (rc) {
1536 disable_sync_clock(NULL); 1546 disable_sync_clock(NULL);
1537 stp_sync->in_sync = -EAGAIN; 1547 stp_sync->in_sync = -EAGAIN;
1538 clear_bit(CLOCK_SYNC_STP, &clock_sync_flags);
1539 if (etr_port0_online || etr_port1_online)
1540 queue_work(time_sync_wq, &etr_work);
1541 } else 1548 } else
1542 stp_sync->in_sync = 1; 1549 stp_sync->in_sync = 1;
1543 xchg(&first, 0); 1550 xchg(&first, 0);
@@ -1569,6 +1576,10 @@ static void stp_work_fn(struct work_struct *work)
1569 if (rc || stp_info.c == 0) 1576 if (rc || stp_info.c == 0)
1570 goto out_unlock; 1577 goto out_unlock;
1571 1578
1579 /* Skip synchronization if the clock is already in sync. */
1580 if (check_sync_clock())
1581 goto out_unlock;
1582
1572 memset(&stp_sync, 0, sizeof(stp_sync)); 1583 memset(&stp_sync, 0, sizeof(stp_sync));
1573 get_online_cpus(); 1584 get_online_cpus();
1574 atomic_set(&stp_sync.cpus, num_online_cpus() - 1); 1585 atomic_set(&stp_sync.cpus, num_online_cpus() - 1);
@@ -1684,8 +1695,14 @@ static ssize_t stp_online_store(struct sysdev_class *class,
1684 return -EINVAL; 1695 return -EINVAL;
1685 if (!test_bit(CLOCK_SYNC_HAS_STP, &clock_sync_flags)) 1696 if (!test_bit(CLOCK_SYNC_HAS_STP, &clock_sync_flags))
1686 return -EOPNOTSUPP; 1697 return -EOPNOTSUPP;
1698 mutex_lock(&clock_sync_mutex);
1687 stp_online = value; 1699 stp_online = value;
1700 if (stp_online)
1701 set_bit(CLOCK_SYNC_STP, &clock_sync_flags);
1702 else
1703 clear_bit(CLOCK_SYNC_STP, &clock_sync_flags);
1688 queue_work(time_sync_wq, &stp_work); 1704 queue_work(time_sync_wq, &stp_work);
1705 mutex_unlock(&clock_sync_mutex);
1689 return count; 1706 return count;
1690} 1707}
1691 1708
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index cc362c9ea8f1..3c72c9cf22b6 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -74,7 +74,7 @@ static DEFINE_SPINLOCK(topology_lock);
74 74
75cpumask_t cpu_core_map[NR_CPUS]; 75cpumask_t cpu_core_map[NR_CPUS];
76 76
77cpumask_t cpu_coregroup_map(unsigned int cpu) 77static cpumask_t cpu_coregroup_map(unsigned int cpu)
78{ 78{
79 struct core_info *core = &core_info; 79 struct core_info *core = &core_info;
80 unsigned long flags; 80 unsigned long flags;
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 4584d81984c0..c2e42cc65ce7 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -61,9 +61,11 @@ extern pgm_check_handler_t do_asce_exception;
61#define stack_pointer ({ void **sp; asm("la %0,0(15)" : "=&d" (sp)); sp; }) 61#define stack_pointer ({ void **sp; asm("la %0,0(15)" : "=&d" (sp)); sp; })
62 62
63#ifndef CONFIG_64BIT 63#ifndef CONFIG_64BIT
64#define LONG "%08lx "
64#define FOURLONG "%08lx %08lx %08lx %08lx\n" 65#define FOURLONG "%08lx %08lx %08lx %08lx\n"
65static int kstack_depth_to_print = 12; 66static int kstack_depth_to_print = 12;
66#else /* CONFIG_64BIT */ 67#else /* CONFIG_64BIT */
68#define LONG "%016lx "
67#define FOURLONG "%016lx %016lx %016lx %016lx\n" 69#define FOURLONG "%016lx %016lx %016lx %016lx\n"
68static int kstack_depth_to_print = 20; 70static int kstack_depth_to_print = 20;
69#endif /* CONFIG_64BIT */ 71#endif /* CONFIG_64BIT */
@@ -155,7 +157,7 @@ void show_stack(struct task_struct *task, unsigned long *sp)
155 break; 157 break;
156 if (i && ((i * sizeof (long) % 32) == 0)) 158 if (i && ((i * sizeof (long) % 32) == 0))
157 printk("\n "); 159 printk("\n ");
158 printk("%p ", (void *)*stack++); 160 printk(LONG, *stack++);
159 } 161 }
160 printk("\n"); 162 printk("\n");
161 show_trace(task, sp); 163 show_trace(task, sp);
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 690e17819686..89b2e7f1b7a9 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -144,7 +144,6 @@ out:
144 return -ENOMEM; 144 return -ENOMEM;
145} 145}
146 146
147#ifdef CONFIG_HOTPLUG_CPU
148void vdso_free_per_cpu(int cpu, struct _lowcore *lowcore) 147void vdso_free_per_cpu(int cpu, struct _lowcore *lowcore)
149{ 148{
150 unsigned long segment_table, page_table, page_frame; 149 unsigned long segment_table, page_table, page_frame;
@@ -163,7 +162,6 @@ void vdso_free_per_cpu(int cpu, struct _lowcore *lowcore)
163 free_page(page_table); 162 free_page(page_table);
164 free_pages(segment_table, SEGMENT_ORDER); 163 free_pages(segment_table, SEGMENT_ORDER);
165} 164}
166#endif /* CONFIG_HOTPLUG_CPU */
167 165
168static void __vdso_init_cr5(void *dummy) 166static void __vdso_init_cr5(void *dummy)
169{ 167{
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index d796d05c9c01..7a2063eb88f0 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -108,6 +108,8 @@ SECTIONS
108 EXIT_TEXT 108 EXIT_TEXT
109 } 109 }
110 110
111 /* early.c uses stsi, which requires page aligned data. */
112 . = ALIGN(PAGE_SIZE);
111 .init.data : { 113 .init.data : {
112 INIT_DATA 114 INIT_DATA
113 } 115 }
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index cbfe91e10120..f4d56e9939c9 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -23,7 +23,7 @@
23#include <linux/timer.h> 23#include <linux/timer.h>
24#include <asm/lowcore.h> 24#include <asm/lowcore.h>
25#include <asm/pgtable.h> 25#include <asm/pgtable.h>
26 26#include <asm/nmi.h>
27#include "kvm-s390.h" 27#include "kvm-s390.h"
28#include "gaccess.h" 28#include "gaccess.h"
29 29
@@ -286,7 +286,7 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
286 setup_timer(&vcpu->arch.ckc_timer, kvm_s390_idle_wakeup, 286 setup_timer(&vcpu->arch.ckc_timer, kvm_s390_idle_wakeup,
287 (unsigned long) vcpu); 287 (unsigned long) vcpu);
288 get_cpu_id(&vcpu->arch.cpu_id); 288 get_cpu_id(&vcpu->arch.cpu_id);
289 vcpu->arch.cpu_id.version = 0xfe; 289 vcpu->arch.cpu_id.version = 0xff;
290 return 0; 290 return 0;
291} 291}
292 292
@@ -440,8 +440,6 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
440 return -EINVAL; /* not implemented yet */ 440 return -EINVAL; /* not implemented yet */
441} 441}
442 442
443extern void s390_handle_mcck(void);
444
445static void __vcpu_run(struct kvm_vcpu *vcpu) 443static void __vcpu_run(struct kvm_vcpu *vcpu)
446{ 444{
447 memcpy(&vcpu->arch.sie_block->gg14, &vcpu->arch.guest_gprs[14], 16); 445 memcpy(&vcpu->arch.sie_block->gg14, &vcpu->arch.guest_gprs[14], 16);
diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c
index 6ccb9fab055a..3f5f680726ed 100644
--- a/arch/s390/lib/delay.c
+++ b/arch/s390/lib/delay.c
@@ -9,6 +9,7 @@
9#include <linux/sched.h> 9#include <linux/sched.h>
10#include <linux/delay.h> 10#include <linux/delay.h>
11#include <linux/timex.h> 11#include <linux/timex.h>
12#include <linux/module.h>
12#include <linux/irqflags.h> 13#include <linux/irqflags.h>
13#include <linux/interrupt.h> 14#include <linux/interrupt.h>
14 15
@@ -92,6 +93,7 @@ out:
92 local_irq_restore(flags); 93 local_irq_restore(flags);
93 preempt_enable(); 94 preempt_enable();
94} 95}
96EXPORT_SYMBOL(__udelay);
95 97
96/* 98/*
97 * Simple udelay variant. To be used on startup and reboot 99 * Simple udelay variant. To be used on startup and reboot
diff --git a/arch/s390/lib/string.c b/arch/s390/lib/string.c
index ae5cf5d03d41..4143b7c19096 100644
--- a/arch/s390/lib/string.c
+++ b/arch/s390/lib/string.c
@@ -44,7 +44,11 @@ static inline char *__strnend(const char *s, size_t n)
44 */ 44 */
45size_t strlen(const char *s) 45size_t strlen(const char *s)
46{ 46{
47#if __GNUC__ < 4
47 return __strend(s) - s; 48 return __strend(s) - s;
49#else
50 return __builtin_strlen(s);
51#endif
48} 52}
49EXPORT_SYMBOL(strlen); 53EXPORT_SYMBOL(strlen);
50 54
@@ -70,6 +74,7 @@ EXPORT_SYMBOL(strnlen);
70 */ 74 */
71char *strcpy(char *dest, const char *src) 75char *strcpy(char *dest, const char *src)
72{ 76{
77#if __GNUC__ < 4
73 register int r0 asm("0") = 0; 78 register int r0 asm("0") = 0;
74 char *ret = dest; 79 char *ret = dest;
75 80
@@ -78,6 +83,9 @@ char *strcpy(char *dest, const char *src)
78 : "+&a" (dest), "+&a" (src) : "d" (r0) 83 : "+&a" (dest), "+&a" (src) : "d" (r0)
79 : "cc", "memory" ); 84 : "cc", "memory" );
80 return ret; 85 return ret;
86#else
87 return __builtin_strcpy(dest, src);
88#endif
81} 89}
82EXPORT_SYMBOL(strcpy); 90EXPORT_SYMBOL(strcpy);
83 91
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 4d537205e83c..833e8366c351 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -200,29 +200,6 @@ static void do_low_address(struct pt_regs *regs, unsigned long error_code)
200 do_no_context(regs, error_code, 0); 200 do_no_context(regs, error_code, 0);
201} 201}
202 202
203/*
204 * We ran out of memory, or some other thing happened to us that made
205 * us unable to handle the page fault gracefully.
206 */
207static int do_out_of_memory(struct pt_regs *regs, unsigned long error_code,
208 unsigned long address)
209{
210 struct task_struct *tsk = current;
211 struct mm_struct *mm = tsk->mm;
212
213 up_read(&mm->mmap_sem);
214 if (is_global_init(tsk)) {
215 yield();
216 down_read(&mm->mmap_sem);
217 return 1;
218 }
219 printk("VM: killing process %s\n", tsk->comm);
220 if (regs->psw.mask & PSW_MASK_PSTATE)
221 do_group_exit(SIGKILL);
222 do_no_context(regs, error_code, address);
223 return 0;
224}
225
226static void do_sigbus(struct pt_regs *regs, unsigned long error_code, 203static void do_sigbus(struct pt_regs *regs, unsigned long error_code,
227 unsigned long address) 204 unsigned long address)
228{ 205{
@@ -367,7 +344,6 @@ good_area:
367 goto bad_area; 344 goto bad_area;
368 } 345 }
369 346
370survive:
371 if (is_vm_hugetlb_page(vma)) 347 if (is_vm_hugetlb_page(vma))
372 address &= HPAGE_MASK; 348 address &= HPAGE_MASK;
373 /* 349 /*
@@ -378,8 +354,8 @@ survive:
378 fault = handle_mm_fault(mm, vma, address, write); 354 fault = handle_mm_fault(mm, vma, address, write);
379 if (unlikely(fault & VM_FAULT_ERROR)) { 355 if (unlikely(fault & VM_FAULT_ERROR)) {
380 if (fault & VM_FAULT_OOM) { 356 if (fault & VM_FAULT_OOM) {
381 if (do_out_of_memory(regs, error_code, address)) 357 up_read(&mm->mmap_sem);
382 goto survive; 358 pagefault_out_of_memory();
383 return; 359 return;
384 } else if (fault & VM_FAULT_SIGBUS) { 360 } else if (fault & VM_FAULT_SIGBUS) {
385 do_sigbus(regs, error_code, address); 361 do_sigbus(regs, error_code, address);
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index f0258ca3b17e..c634dfbe92e9 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -40,7 +40,9 @@
40DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); 40DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
41 41
42pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__((__aligned__(PAGE_SIZE))); 42pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__((__aligned__(PAGE_SIZE)));
43
43char empty_zero_page[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE))); 44char empty_zero_page[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE)));
45EXPORT_SYMBOL(empty_zero_page);
44 46
45/* 47/*
46 * paging_init() sets up the page tables 48 * paging_init() sets up the page tables
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 6b6ddc4ea02b..be6c1cf4ad5a 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -258,6 +258,10 @@ int s390_enable_sie(void)
258 struct task_struct *tsk = current; 258 struct task_struct *tsk = current;
259 struct mm_struct *mm, *old_mm; 259 struct mm_struct *mm, *old_mm;
260 260
261 /* Do we have switched amode? If no, we cannot do sie */
262 if (!switch_amode)
263 return -EINVAL;
264
261 /* Do we have pgstes? if yes, we are done */ 265 /* Do we have pgstes? if yes, we are done */
262 if (tsk->mm->context.has_pgste) 266 if (tsk->mm->context.has_pgste)
263 return 0; 267 return 0;
@@ -292,7 +296,7 @@ int s390_enable_sie(void)
292 tsk->mm = tsk->active_mm = mm; 296 tsk->mm = tsk->active_mm = mm;
293 preempt_disable(); 297 preempt_disable();
294 update_mm(mm, tsk); 298 update_mm(mm, tsk);
295 cpu_set(smp_processor_id(), mm->cpu_vm_mask); 299 cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm));
296 preempt_enable(); 300 preempt_enable();
297 task_unlock(tsk); 301 task_unlock(tsk);
298 mmput(old_mm); 302 mmput(old_mm);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-21 21:04:11 -0500