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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-26 16:04:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-26 16:04:22 -0700 |
| commit | 21cdbc1378e8aa96e1ed4a606dce1a8e7daf7fdf (patch) | |
| tree | 55b6c294b912ccdc3eede15960b0ece53a69d902 /arch/s390 | |
| parent | 86d9c070175de65890794fa227b68297da6206d8 (diff) | |
| parent | ef3500b2b2955af4fa6b0564b51c0c604e38c571 (diff) | |
| download | linux-21cdbc1378e8aa96e1ed4a606dce1a8e7daf7fdf.tar.gz linux-21cdbc1378e8aa96e1ed4a606dce1a8e7daf7fdf.tar.bz2 linux-21cdbc1378e8aa96e1ed4a606dce1a8e7daf7fdf.zip | |
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/s390')
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" comment "I/O subsystem configuration" -config MACHCHK_WARNING - bool "Process warning machine checks" - help - Select this option if you want the machine check handler on IBM S/390 or - zSeries to process warning machine checks (e.g. on power failures). - If unsure, say "Y". - config QDIO tristate "QDIO support" ---help--- @@ -521,7 +514,7 @@ config APPLDATA_OS config APPLDATA_NET_SUM tristate "Monitor overall network statistics" - depends on APPLDATA_BASE + depends on APPLDATA_BASE && NET help This provides network related data to the Linux - VM Monitor Stream, currently there is only a total sum of network I/O statistics, no @@ -552,7 +545,7 @@ config KEXEC but is independent of hardware/microcode support. config ZFCPDUMP - tristate "zfcpdump support" + bool "zfcpdump support" select SMP default n 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: static void __exit prng_exit(void) { /* wipe me */ - memset(p->buf, 0, prng_chunk_size); - kfree(p->buf); + kzfree(p->buf); kfree(p); 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 @@ * with operation of the form "set_bit(bitnr, flags)". */ -/* bitmap tables from arch/S390/kernel/bitmap.S */ +/* bitmap tables from arch/s390/kernel/bitmap.c */ extern const char _oi_bitmap[]; extern const char _ni_bitmap[]; extern const char _zb_findmap[]; @@ -525,16 +525,16 @@ static inline unsigned long __ffs_word_loop(const unsigned long *addr, static inline unsigned long __ffz_word(unsigned long nr, unsigned long word) { #ifdef __s390x__ - if (likely((word & 0xffffffff) == 0xffffffff)) { + if ((word & 0xffffffff) == 0xffffffff) { word >>= 32; nr += 32; } #endif - if (likely((word & 0xffff) == 0xffff)) { + if ((word & 0xffff) == 0xffff) { word >>= 16; nr += 16; } - if (likely((word & 0xff) == 0xff)) { + if ((word & 0xff) == 0xff) { word >>= 8; nr += 8; } @@ -549,16 +549,16 @@ static inline unsigned long __ffz_word(unsigned long nr, unsigned long word) static inline unsigned long __ffs_word(unsigned long nr, unsigned long word) { #ifdef __s390x__ - if (likely((word & 0xffffffff) == 0)) { + if ((word & 0xffffffff) == 0) { word >>= 32; nr += 32; } #endif - if (likely((word & 0xffff) == 0)) { + if ((word & 0xffff) == 0) { word >>= 16; nr += 16; } - if (likely((word & 0xff) == 0)) { + if ((word & 0xff) == 0) { word >>= 8; nr += 8; } 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 @@ +/* + * Data definitions for channel report processing + * Copyright IBM Corp. 2000,2009 + * Author(s): Ingo Adlung <adlung@de.ibm.com>, + * Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Cornelia Huck <cornelia.huck@de.ibm.com>, + * Heiko Carstens <heiko.carstens@de.ibm.com>, + */ + +#ifndef _ASM_S390_CRW_H +#define _ASM_S390_CRW_H + +#include <linux/types.h> + +/* + * Channel Report Word + */ +struct crw { + __u32 res1 : 1; /* reserved zero */ + __u32 slct : 1; /* solicited */ + __u32 oflw : 1; /* overflow */ + __u32 chn : 1; /* chained */ + __u32 rsc : 4; /* reporting source code */ + __u32 anc : 1; /* ancillary report */ + __u32 res2 : 1; /* reserved zero */ + __u32 erc : 6; /* error-recovery code */ + __u32 rsid : 16; /* reporting-source ID */ +} __attribute__ ((packed)); + +typedef void (*crw_handler_t)(struct crw *, struct crw *, int); + +extern int crw_register_handler(int rsc, crw_handler_t handler); +extern void crw_unregister_handler(int rsc); +extern void crw_handle_channel_report(void); + +#define NR_RSCS 16 + +#define CRW_RSC_MONITOR 0x2 /* monitoring facility */ +#define CRW_RSC_SCH 0x3 /* subchannel */ +#define CRW_RSC_CPATH 0x4 /* channel path */ +#define CRW_RSC_CONFIG 0x9 /* configuration-alert facility */ +#define CRW_RSC_CSS 0xB /* channel subsystem */ + +#define CRW_ERC_EVENT 0x00 /* event information pending */ +#define CRW_ERC_AVAIL 0x01 /* available */ +#define CRW_ERC_INIT 0x02 /* initialized */ +#define CRW_ERC_TERROR 0x03 /* temporary error */ +#define CRW_ERC_IPARM 0x04 /* installed parm initialized */ +#define CRW_ERC_TERM 0x05 /* terminal */ +#define CRW_ERC_PERRN 0x06 /* perm. error, fac. not init */ +#define CRW_ERC_PERRI 0x07 /* perm. error, facility init */ +#define CRW_ERC_PMOD 0x08 /* installed parameters modified */ + +static inline int stcrw(struct crw *pcrw) +{ + int ccode; + + asm volatile( + " stcrw 0(%2)\n" + " ipm %0\n" + " srl %0,28\n" + : "=d" (ccode), "=m" (*pcrw) + : "a" (pcrw) + : "cc" ); + return ccode; +} + +#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 { unsigned int dasd_io_nr_req[32]; /* histogram of # of requests in chanq */ } dasd_profile_info_t; -/* +/* * struct format_data_t * represents all data necessary to format a dasd */ typedef struct format_data_t { - int start_unit; /* from track */ - int stop_unit; /* to track */ - int blksize; /* sectorsize */ - int intensity; + unsigned int start_unit; /* from track */ + unsigned int stop_unit; /* to track */ + unsigned int blksize; /* sectorsize */ + unsigned int intensity; } format_data_t; /* 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) /* * Return the number of idal words needed for an address/length pair. */ -static inline unsigned int -idal_nr_words(void *vaddr, unsigned int length) +static inline unsigned int idal_nr_words(void *vaddr, unsigned int length) { -#ifdef __s390x__ - if (idal_is_needed(vaddr, length)) - return ((__pa(vaddr) & (IDA_BLOCK_SIZE-1)) + length + - (IDA_BLOCK_SIZE-1)) >> IDA_SIZE_LOG; -#endif - return 0; + return ((__pa(vaddr) & (IDA_BLOCK_SIZE-1)) + length + + (IDA_BLOCK_SIZE-1)) >> IDA_SIZE_LOG; } /* * Create the list of idal words for an address/length pair. */ -static inline unsigned long * -idal_create_words(unsigned long *idaws, void *vaddr, unsigned int length) +static inline unsigned long *idal_create_words(unsigned long *idaws, + void *vaddr, unsigned int length) { -#ifdef __s390x__ unsigned long paddr; unsigned int cidaw; @@ -74,7 +68,6 @@ idal_create_words(unsigned long *idaws, void *vaddr, unsigned int length) paddr += IDA_BLOCK_SIZE; *idaws++ = paddr; } -#endif return idaws; } 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 @@ #ifndef _ASM_S390_LOWCORE_H #define _ASM_S390_LOWCORE_H -#ifndef __s390x__ -#define __LC_EXT_OLD_PSW 0x018 -#define __LC_SVC_OLD_PSW 0x020 -#define __LC_PGM_OLD_PSW 0x028 -#define __LC_MCK_OLD_PSW 0x030 -#define __LC_IO_OLD_PSW 0x038 -#define __LC_EXT_NEW_PSW 0x058 -#define __LC_SVC_NEW_PSW 0x060 -#define __LC_PGM_NEW_PSW 0x068 -#define __LC_MCK_NEW_PSW 0x070 -#define __LC_IO_NEW_PSW 0x078 -#else /* !__s390x__ */ -#define __LC_EXT_OLD_PSW 0x0130 -#define __LC_SVC_OLD_PSW 0x0140 -#define __LC_PGM_OLD_PSW 0x0150 -#define __LC_MCK_OLD_PSW 0x0160 -#define __LC_IO_OLD_PSW 0x0170 -#define __LC_EXT_NEW_PSW 0x01b0 -#define __LC_SVC_NEW_PSW 0x01c0 -#define __LC_PGM_NEW_PSW 0x01d0 -#define __LC_MCK_NEW_PSW 0x01e0 -#define __LC_IO_NEW_PSW 0x01f0 -#endif /* !__s390x__ */ - -#define __LC_IPL_PARMBLOCK_PTR 0x014 -#define __LC_EXT_PARAMS 0x080 -#define __LC_CPU_ADDRESS 0x084 -#define __LC_EXT_INT_CODE 0x086 - -#define __LC_SVC_ILC 0x088 -#define __LC_SVC_INT_CODE 0x08A -#define __LC_PGM_ILC 0x08C -#define __LC_PGM_INT_CODE 0x08E +#define __LC_IPL_PARMBLOCK_PTR 0x0014 +#define __LC_EXT_PARAMS 0x0080 +#define __LC_CPU_ADDRESS 0x0084 +#define __LC_EXT_INT_CODE 0x0086 -#define __LC_PER_ATMID 0x096 -#define __LC_PER_ADDRESS 0x098 -#define __LC_PER_ACCESS_ID 0x0A1 -#define __LC_AR_MODE_ID 0x0A3 +#define __LC_SVC_ILC 0x0088 +#define __LC_SVC_INT_CODE 0x008a +#define __LC_PGM_ILC 0x008c +#define __LC_PGM_INT_CODE 0x008e -#define __LC_SUBCHANNEL_ID 0x0B8 -#define __LC_SUBCHANNEL_NR 0x0BA -#define __LC_IO_INT_PARM 0x0BC -#define __LC_IO_INT_WORD 0x0C0 -#define __LC_MCCK_CODE 0x0E8 +#define __LC_PER_ATMID 0x0096 +#define __LC_PER_ADDRESS 0x0098 +#define __LC_PER_ACCESS_ID 0x00a1 +#define __LC_AR_MODE_ID 0x00a3 -#define __LC_LAST_BREAK 0x110 - -#define __LC_RETURN_PSW 0x200 - -#define __LC_SAVE_AREA 0xC00 - -#ifndef __s390x__ -#define __LC_IRB 0x208 -#define __LC_SYNC_ENTER_TIMER 0x248 -#define __LC_ASYNC_ENTER_TIMER 0x250 -#define __LC_EXIT_TIMER 0x258 -#define __LC_USER_TIMER 0x260 -#define __LC_SYSTEM_TIMER 0x268 -#define __LC_STEAL_TIMER 0x270 -#define __LC_LAST_UPDATE_TIMER 0x278 -#define __LC_LAST_UPDATE_CLOCK 0x280 -#define __LC_RETURN_MCCK_PSW 0x288 -#define __LC_KERNEL_STACK 0xC40 -#define __LC_THREAD_INFO 0xC44 -#define __LC_ASYNC_STACK 0xC48 -#define __LC_KERNEL_ASCE 0xC4C -#define __LC_USER_ASCE 0xC50 -#define __LC_PANIC_STACK 0xC54 -#define __LC_CPUID 0xC60 -#define __LC_CPUADDR 0xC68 -#define __LC_IPLDEV 0xC7C -#define __LC_CURRENT 0xC90 -#define __LC_INT_CLOCK 0xC98 -#else /* __s390x__ */ -#define __LC_IRB 0x210 -#define __LC_SYNC_ENTER_TIMER 0x250 -#define __LC_ASYNC_ENTER_TIMER 0x258 -#define __LC_EXIT_TIMER 0x260 -#define __LC_USER_TIMER 0x268 -#define __LC_SYSTEM_TIMER 0x270 -#define __LC_STEAL_TIMER 0x278 -#define __LC_LAST_UPDATE_TIMER 0x280 -#define __LC_LAST_UPDATE_CLOCK 0x288 -#define __LC_RETURN_MCCK_PSW 0x290 -#define __LC_KERNEL_STACK 0xD40 -#define __LC_THREAD_INFO 0xD48 -#define __LC_ASYNC_STACK 0xD50 -#define __LC_KERNEL_ASCE 0xD58 -#define __LC_USER_ASCE 0xD60 -#define __LC_PANIC_STACK 0xD68 -#define __LC_CPUID 0xD80 -#define __LC_CPUADDR 0xD88 -#define __LC_IPLDEV 0xDB8 -#define __LC_CURRENT 0xDD8 -#define __LC_INT_CLOCK 0xDE8 -#define __LC_VDSO_PER_CPU 0xE38 -#endif /* __s390x__ */ +#define __LC_SUBCHANNEL_ID 0x00b8 +#define __LC_SUBCHANNEL_NR 0x00ba +#define __LC_IO_INT_PARM 0x00bc +#define __LC_IO_INT_WORD 0x00c0 +#define __LC_MCCK_CODE 0x00e8 -#define __LC_PASTE 0xE40 +#define __LC_DUMP_REIPL 0x0e00 -#define __LC_PANIC_MAGIC 0xE00 #ifndef __s390x__ -#define __LC_PFAULT_INTPARM 0x080 -#define __LC_CPU_TIMER_SAVE_AREA 0x0D8 -#define __LC_CLOCK_COMP_SAVE_AREA 0x0E0 -#define __LC_PSW_SAVE_AREA 0x100 -#define __LC_PREFIX_SAVE_AREA 0x108 -#define __LC_AREGS_SAVE_AREA 0x120 -#define __LC_FPREGS_SAVE_AREA 0x160 -#define __LC_GPREGS_SAVE_AREA 0x180 -#define __LC_CREGS_SAVE_AREA 0x1C0 +#define __LC_EXT_OLD_PSW 0x0018 +#define __LC_SVC_OLD_PSW 0x0020 +#define __LC_PGM_OLD_PSW 0x0028 +#define __LC_MCK_OLD_PSW 0x0030 +#define __LC_IO_OLD_PSW 0x0038 +#define __LC_EXT_NEW_PSW 0x0058 +#define __LC_SVC_NEW_PSW 0x0060 +#define __LC_PGM_NEW_PSW 0x0068 +#define __LC_MCK_NEW_PSW 0x0070 +#define __LC_IO_NEW_PSW 0x0078 +#define __LC_SAVE_AREA 0x0200 +#define __LC_RETURN_PSW 0x0240 +#define __LC_RETURN_MCCK_PSW 0x0248 +#define __LC_SYNC_ENTER_TIMER 0x0250 +#define __LC_ASYNC_ENTER_TIMER 0x0258 +#define __LC_EXIT_TIMER 0x0260 +#define __LC_USER_TIMER 0x0268 +#define __LC_SYSTEM_TIMER 0x0270 +#define __LC_STEAL_TIMER 0x0278 +#define __LC_LAST_UPDATE_TIMER 0x0280 +#define __LC_LAST_UPDATE_CLOCK 0x0288 +#define __LC_CURRENT 0x0290 +#define __LC_THREAD_INFO 0x0294 +#define __LC_KERNEL_STACK 0x0298 +#define __LC_ASYNC_STACK 0x029c +#define __LC_PANIC_STACK 0x02a0 +#define __LC_KERNEL_ASCE 0x02a4 +#define __LC_USER_ASCE 0x02a8 +#define __LC_USER_EXEC_ASCE 0x02ac +#define __LC_CPUID 0x02b0 +#define __LC_INT_CLOCK 0x02c8 +#define __LC_IRB 0x0300 +#define __LC_PFAULT_INTPARM 0x0080 +#define __LC_CPU_TIMER_SAVE_AREA 0x00d8 +#define __LC_CLOCK_COMP_SAVE_AREA 0x00e0 +#define __LC_PSW_SAVE_AREA 0x0100 +#define __LC_PREFIX_SAVE_AREA 0x0108 +#define __LC_AREGS_SAVE_AREA 0x0120 +#define __LC_FPREGS_SAVE_AREA 0x0160 +#define __LC_GPREGS_SAVE_AREA 0x0180 +#define __LC_CREGS_SAVE_AREA 0x01c0 #else /* __s390x__ */ -#define __LC_PFAULT_INTPARM 0x11B8 +#define __LC_LAST_BREAK 0x0110 +#define __LC_EXT_OLD_PSW 0x0130 +#define __LC_SVC_OLD_PSW 0x0140 +#define __LC_PGM_OLD_PSW 0x0150 +#define __LC_MCK_OLD_PSW 0x0160 +#define __LC_IO_OLD_PSW 0x0170 +#define __LC_EXT_NEW_PSW 0x01b0 +#define __LC_SVC_NEW_PSW 0x01c0 +#define __LC_PGM_NEW_PSW 0x01d0 +#define __LC_MCK_NEW_PSW 0x01e0 +#define __LC_IO_NEW_PSW 0x01f0 +#define __LC_SAVE_AREA 0x0200 +#define __LC_RETURN_PSW 0x0280 +#define __LC_RETURN_MCCK_PSW 0x0290 +#define __LC_SYNC_ENTER_TIMER 0x02a0 +#define __LC_ASYNC_ENTER_TIMER 0x02a8 +#define __LC_EXIT_TIMER 0x02b0 +#define __LC_USER_TIMER 0x02b8 +#define __LC_SYSTEM_TIMER 0x02c0 +#define __LC_STEAL_TIMER 0x02c8 +#define __LC_LAST_UPDATE_TIMER 0x02d0 +#define __LC_LAST_UPDATE_CLOCK 0x02d8 +#define __LC_CURRENT 0x02e0 +#define __LC_THREAD_INFO 0x02e8 +#define __LC_KERNEL_STACK 0x02f0 +#define __LC_ASYNC_STACK 0x02f8 +#define __LC_PANIC_STACK 0x0300 +#define __LC_KERNEL_ASCE 0x0308 +#define __LC_USER_ASCE 0x0310 +#define __LC_USER_EXEC_ASCE 0x0318 +#define __LC_CPUID 0x0320 +#define __LC_INT_CLOCK 0x0340 +#define __LC_VDSO_PER_CPU 0x0350 +#define __LC_IRB 0x0380 +#define __LC_PASTE 0x03c0 +#define __LC_PFAULT_INTPARM 0x11b8 #define __LC_FPREGS_SAVE_AREA 0x1200 -#define __LC_GPREGS_SAVE_AREA 0x1280 +#define __LC_GPREGS_SAVE_AREA 0x1280 #define __LC_PSW_SAVE_AREA 0x1300 #define __LC_PREFIX_SAVE_AREA 0x1318 -#define __LC_FP_CREG_SAVE_AREA 0x131C +#define __LC_FP_CREG_SAVE_AREA 0x131c #define __LC_TODREG_SAVE_AREA 0x1324 -#define __LC_CPU_TIMER_SAVE_AREA 0x1328 +#define __LC_CPU_TIMER_SAVE_AREA 0x1328 #define __LC_CLOCK_COMP_SAVE_AREA 0x1331 -#define __LC_AREGS_SAVE_AREA 0x1340 -#define __LC_CREGS_SAVE_AREA 0x1380 +#define __LC_AREGS_SAVE_AREA 0x1340 +#define __LC_CREGS_SAVE_AREA 0x1380 #endif /* __s390x__ */ #ifndef __ASSEMBLY__ @@ -198,222 +187,240 @@ union save_area { struct _lowcore { #ifndef __s390x__ - /* prefix area: defined by architecture */ - psw_t restart_psw; /* 0x000 */ - __u32 ccw2[4]; /* 0x008 */ - psw_t external_old_psw; /* 0x018 */ - psw_t svc_old_psw; /* 0x020 */ - psw_t program_old_psw; /* 0x028 */ - psw_t mcck_old_psw; /* 0x030 */ - psw_t io_old_psw; /* 0x038 */ - __u8 pad1[0x58-0x40]; /* 0x040 */ - psw_t external_new_psw; /* 0x058 */ - psw_t svc_new_psw; /* 0x060 */ - psw_t program_new_psw; /* 0x068 */ - psw_t mcck_new_psw; /* 0x070 */ - psw_t io_new_psw; /* 0x078 */ - __u32 ext_params; /* 0x080 */ - __u16 cpu_addr; /* 0x084 */ - __u16 ext_int_code; /* 0x086 */ - __u16 svc_ilc; /* 0x088 */ - __u16 svc_code; /* 0x08a */ - __u16 pgm_ilc; /* 0x08c */ - __u16 pgm_code; /* 0x08e */ - __u32 trans_exc_code; /* 0x090 */ - __u16 mon_class_num; /* 0x094 */ - __u16 per_perc_atmid; /* 0x096 */ - __u32 per_address; /* 0x098 */ - __u32 monitor_code; /* 0x09c */ - __u8 exc_access_id; /* 0x0a0 */ - __u8 per_access_id; /* 0x0a1 */ - __u8 pad2[0xB8-0xA2]; /* 0x0a2 */ - __u16 subchannel_id; /* 0x0b8 */ - __u16 subchannel_nr; /* 0x0ba */ - __u32 io_int_parm; /* 0x0bc */ - __u32 io_int_word; /* 0x0c0 */ - __u8 pad3[0xc8-0xc4]; /* 0x0c4 */ - __u32 stfl_fac_list; /* 0x0c8 */ - __u8 pad4[0xd4-0xcc]; /* 0x0cc */ - __u32 extended_save_area_addr; /* 0x0d4 */ - __u32 cpu_timer_save_area[2]; /* 0x0d8 */ - __u32 clock_comp_save_area[2]; /* 0x0e0 */ - __u32 mcck_interruption_code[2]; /* 0x0e8 */ - __u8 pad5[0xf4-0xf0]; /* 0x0f0 */ - __u32 external_damage_code; /* 0x0f4 */ - __u32 failing_storage_address; /* 0x0f8 */ - __u8 pad6[0x100-0xfc]; /* 0x0fc */ - __u32 st_status_fixed_logout[4];/* 0x100 */ - __u8 pad7[0x120-0x110]; /* 0x110 */ - __u32 access_regs_save_area[16];/* 0x120 */ - __u32 floating_pt_save_area[8]; /* 0x160 */ - __u32 gpregs_save_area[16]; /* 0x180 */ - __u32 cregs_save_area[16]; /* 0x1c0 */ - - psw_t return_psw; /* 0x200 */ - __u8 irb[64]; /* 0x208 */ - __u64 sync_enter_timer; /* 0x248 */ - __u64 async_enter_timer; /* 0x250 */ - __u64 exit_timer; /* 0x258 */ - __u64 user_timer; /* 0x260 */ - __u64 system_timer; /* 0x268 */ - __u64 steal_timer; /* 0x270 */ - __u64 last_update_timer; /* 0x278 */ - __u64 last_update_clock; /* 0x280 */ - psw_t return_mcck_psw; /* 0x288 */ - __u8 pad8[0xc00-0x290]; /* 0x290 */ - - /* System info area */ - __u32 save_area[16]; /* 0xc00 */ - __u32 kernel_stack; /* 0xc40 */ - __u32 thread_info; /* 0xc44 */ - __u32 async_stack; /* 0xc48 */ - __u32 kernel_asce; /* 0xc4c */ - __u32 user_asce; /* 0xc50 */ - __u32 panic_stack; /* 0xc54 */ - __u32 user_exec_asce; /* 0xc58 */ - __u8 pad10[0xc60-0xc5c]; /* 0xc5c */ - /* entry.S sensitive area start */ - struct cpuinfo_S390 cpu_data; /* 0xc60 */ - __u32 ipl_device; /* 0xc7c */ - /* entry.S sensitive area end */ - - /* SMP info area: defined by DJB */ - __u64 clock_comparator; /* 0xc80 */ - __u32 ext_call_fast; /* 0xc88 */ - __u32 percpu_offset; /* 0xc8c */ - __u32 current_task; /* 0xc90 */ - __u32 softirq_pending; /* 0xc94 */ - __u64 int_clock; /* 0xc98 */ - __u8 pad11[0xe00-0xca0]; /* 0xca0 */ - - /* 0xe00 is used as indicator for dump tools */ - /* whether the kernel died with panic() or not */ - __u32 panic_magic; /* 0xe00 */ - - /* Align to the top 1k of prefix area */ - __u8 pad12[0x1000-0xe04]; /* 0xe04 */ + /* 0x0000 - 0x01ff: defined by architecture */ + psw_t restart_psw; /* 0x0000 */ + __u32 ccw2[4]; /* 0x0008 */ + psw_t external_old_psw; /* 0x0018 */ + psw_t svc_old_psw; /* 0x0020 */ + psw_t program_old_psw; /* 0x0028 */ + psw_t mcck_old_psw; /* 0x0030 */ + psw_t io_old_psw; /* 0x0038 */ + __u8 pad_0x0040[0x0058-0x0040]; /* 0x0040 */ + psw_t external_new_psw; /* 0x0058 */ + psw_t svc_new_psw; /* 0x0060 */ + psw_t program_new_psw; /* 0x0068 */ + psw_t mcck_new_psw; /* 0x0070 */ + psw_t io_new_psw; /* 0x0078 */ + __u32 ext_params; /* 0x0080 */ + __u16 cpu_addr; /* 0x0084 */ + __u16 ext_int_code; /* 0x0086 */ + __u16 svc_ilc; /* 0x0088 */ + __u16 svc_code; /* 0x008a */ + __u16 pgm_ilc; /* 0x008c */ + __u16 pgm_code; /* 0x008e */ + __u32 trans_exc_code; /* 0x0090 */ + __u16 mon_class_num; /* 0x0094 */ + __u16 per_perc_atmid; /* 0x0096 */ + __u32 per_address; /* 0x0098 */ + __u32 monitor_code; /* 0x009c */ + __u8 exc_access_id; /* 0x00a0 */ + __u8 per_access_id; /* 0x00a1 */ + __u8 pad_0x00a2[0x00b8-0x00a2]; /* 0x00a2 */ + __u16 subchannel_id; /* 0x00b8 */ + __u16 subchannel_nr; /* 0x00ba */ + __u32 io_int_parm; /* 0x00bc */ + __u32 io_int_word; /* 0x00c0 */ + __u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */ + __u32 stfl_fac_list; /* 0x00c8 */ + __u8 pad_0x00cc[0x00d4-0x00cc]; /* 0x00cc */ + __u32 extended_save_area_addr; /* 0x00d4 */ + __u32 cpu_timer_save_area[2]; /* 0x00d8 */ + __u32 clock_comp_save_area[2]; /* 0x00e0 */ + __u32 mcck_interruption_code[2]; /* 0x00e8 */ + __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */ + __u32 external_damage_code; /* 0x00f4 */ + __u32 failing_storage_address; /* 0x00f8 */ + __u8 pad_0x00fc[0x0100-0x00fc]; /* 0x00fc */ + __u32 st_status_fixed_logout[4]; /* 0x0100 */ + __u8 pad_0x0110[0x0120-0x0110]; /* 0x0110 */ + + /* CPU register save area: defined by architecture */ + __u32 access_regs_save_area[16]; /* 0x0120 */ + __u32 floating_pt_save_area[8]; /* 0x0160 */ + __u32 gpregs_save_area[16]; /* 0x0180 */ + __u32 cregs_save_area[16]; /* 0x01c0 */ + + /* Return psws. */ + __u32 save_area[16]; /* 0x0200 */ + psw_t return_psw; /* 0x0240 */ + psw_t return_mcck_psw; /* 0x0248 */ + + /* CPU time accounting values */ + __u64 sync_enter_timer; /* 0x0250 */ + __u64 async_enter_timer; /* 0x0258 */ + __u64 exit_timer; /* 0x0260 */ + __u64 user_timer; /* 0x0268 */ + __u64 system_timer; /* 0x0270 */ + __u64 steal_timer; /* 0x0278 */ + __u64 last_update_timer; /* 0x0280 */ + __u64 last_update_clock; /* 0x0288 */ + + /* Current process. */ + __u32 current_task; /* 0x0290 */ + __u32 thread_info; /* 0x0294 */ + __u32 kernel_stack; /* 0x0298 */ + + /* Interrupt and panic stack. */ + __u32 async_stack; /* 0x029c */ + __u32 panic_stack; /* 0x02a0 */ + + /* Address space pointer. */ + __u32 kernel_asce; /* 0x02a4 */ + __u32 user_asce; /* 0x02a8 */ + __u32 user_exec_asce; /* 0x02ac */ + + /* SMP info area */ + cpuid_t cpu_id; /* 0x02b0 */ + __u32 cpu_nr; /* 0x02b8 */ + __u32 softirq_pending; /* 0x02bc */ + __u32 percpu_offset; /* 0x02c0 */ + __u32 ext_call_fast; /* 0x02c4 */ + __u64 int_clock; /* 0x02c8 */ + __u64 clock_comparator; /* 0x02d0 */ + __u8 pad_0x02d8[0x0300-0x02d8]; /* 0x02d8 */ + + /* Interrupt response block */ + __u8 irb[64]; /* 0x0300 */ + + __u8 pad_0x0400[0x0e00-0x0400]; /* 0x0400 */ + + /* + * 0xe00 contains the address of the IPL Parameter Information + * block. Dump tools need IPIB for IPL after dump. + * Note: do not change the position of any fields in 0x0e00-0x0f00 + */ + __u32 ipib; /* 0x0e00 */ + __u32 ipib_checksum; /* 0x0e04 */ + + /* Align to the top 1k of prefix area */ + __u8 pad_0x0e08[0x1000-0x0e08]; /* 0x0e08 */ #else /* !__s390x__ */ - /* prefix area: defined by architecture */ - __u32 ccw1[2]; /* 0x000 */ - __u32 ccw2[4]; /* 0x008 */ - __u8 pad1[0x80-0x18]; /* 0x018 */ - __u32 ext_params; /* 0x080 */ - __u16 cpu_addr; /* 0x084 */ - __u16 ext_int_code; /* 0x086 */ - __u16 svc_ilc; /* 0x088 */ - __u16 svc_code; /* 0x08a */ - __u16 pgm_ilc; /* 0x08c */ - __u16 pgm_code; /* 0x08e */ - __u32 data_exc_code; /* 0x090 */ - __u16 mon_class_num; /* 0x094 */ - __u16 per_perc_atmid; /* 0x096 */ - addr_t per_address; /* 0x098 */ - __u8 exc_access_id; /* 0x0a0 */ - __u8 per_access_id; /* 0x0a1 */ - __u8 op_access_id; /* 0x0a2 */ - __u8 ar_access_id; /* 0x0a3 */ - __u8 pad2[0xA8-0xA4]; /* 0x0a4 */ - addr_t trans_exc_code; /* 0x0A0 */ - addr_t monitor_code; /* 0x09c */ - __u16 subchannel_id; /* 0x0b8 */ - __u16 subchannel_nr; /* 0x0ba */ - __u32 io_int_parm; /* 0x0bc */ - __u32 io_int_word; /* 0x0c0 */ - __u8 pad3[0xc8-0xc4]; /* 0x0c4 */ - __u32 stfl_fac_list; /* 0x0c8 */ - __u8 pad4[0xe8-0xcc]; /* 0x0cc */ - __u32 mcck_interruption_code[2]; /* 0x0e8 */ - __u8 pad5[0xf4-0xf0]; /* 0x0f0 */ - __u32 external_damage_code; /* 0x0f4 */ - addr_t failing_storage_address; /* 0x0f8 */ - __u8 pad6[0x120-0x100]; /* 0x100 */ - psw_t restart_old_psw; /* 0x120 */ - psw_t external_old_psw; /* 0x130 */ - psw_t svc_old_psw; /* 0x140 */ - psw_t program_old_psw; /* 0x150 */ - psw_t mcck_old_psw; /* 0x160 */ - psw_t io_old_psw; /* 0x170 */ - __u8 pad7[0x1a0-0x180]; /* 0x180 */ - psw_t restart_psw; /* 0x1a0 */ - psw_t external_new_psw; /* 0x1b0 */ - psw_t svc_new_psw; /* 0x1c0 */ - psw_t program_new_psw; /* 0x1d0 */ - psw_t mcck_new_psw; /* 0x1e0 */ - psw_t io_new_psw; /* 0x1f0 */ - psw_t return_psw; /* 0x200 */ - __u8 irb[64]; /* 0x210 */ - __u64 sync_enter_timer; /* 0x250 */ - __u64 async_enter_timer; /* 0x258 */ - __u64 exit_timer; /* 0x260 */ - __u64 user_timer; /* 0x268 */ - __u64 system_timer; /* 0x270 */ - __u64 steal_timer; /* 0x278 */ - __u64 last_update_timer; /* 0x280 */ - __u64 last_update_clock; /* 0x288 */ - psw_t return_mcck_psw; /* 0x290 */ - __u8 pad8[0xc00-0x2a0]; /* 0x2a0 */ - /* System info area */ - __u64 save_area[16]; /* 0xc00 */ - __u8 pad9[0xd40-0xc80]; /* 0xc80 */ - __u64 kernel_stack; /* 0xd40 */ - __u64 thread_info; /* 0xd48 */ - __u64 async_stack; /* 0xd50 */ - __u64 kernel_asce; /* 0xd58 */ - __u64 user_asce; /* 0xd60 */ - __u64 panic_stack; /* 0xd68 */ - __u64 user_exec_asce; /* 0xd70 */ - __u8 pad10[0xd80-0xd78]; /* 0xd78 */ - /* entry.S sensitive area start */ - struct cpuinfo_S390 cpu_data; /* 0xd80 */ - __u32 ipl_device; /* 0xdb8 */ - __u32 pad11; /* 0xdbc */ - /* entry.S sensitive area end */ - - /* SMP info area: defined by DJB */ - __u64 clock_comparator; /* 0xdc0 */ - __u64 ext_call_fast; /* 0xdc8 */ - __u64 percpu_offset; /* 0xdd0 */ - __u64 current_task; /* 0xdd8 */ - __u32 softirq_pending; /* 0xde0 */ - __u32 pad_0x0de4; /* 0xde4 */ - __u64 int_clock; /* 0xde8 */ - __u8 pad12[0xe00-0xdf0]; /* 0xdf0 */ - - /* 0xe00 is used as indicator for dump tools */ - /* whether the kernel died with panic() or not */ - __u32 panic_magic; /* 0xe00 */ + /* 0x0000 - 0x01ff: defined by architecture */ + __u32 ccw1[2]; /* 0x0000 */ + __u32 ccw2[4]; /* 0x0008 */ + __u8 pad_0x0018[0x0080-0x0018]; /* 0x0018 */ + __u32 ext_params; /* 0x0080 */ + __u16 cpu_addr; /* 0x0084 */ + __u16 ext_int_code; /* 0x0086 */ + __u16 svc_ilc; /* 0x0088 */ + __u16 svc_code; /* 0x008a */ + __u16 pgm_ilc; /* 0x008c */ + __u16 pgm_code; /* 0x008e */ + __u32 data_exc_code; /* 0x0090 */ + __u16 mon_class_num; /* 0x0094 */ + __u16 per_perc_atmid; /* 0x0096 */ + addr_t per_address; /* 0x0098 */ + __u8 exc_access_id; /* 0x00a0 */ + __u8 per_access_id; /* 0x00a1 */ + __u8 op_access_id; /* 0x00a2 */ + __u8 ar_access_id; /* 0x00a3 */ + __u8 pad_0x00a4[0x00a8-0x00a4]; /* 0x00a4 */ + addr_t trans_exc_code; /* 0x00a8 */ + addr_t monitor_code; /* 0x00b0 */ + __u16 subchannel_id; /* 0x00b8 */ + __u16 subchannel_nr; /* 0x00ba */ + __u32 io_int_parm; /* 0x00bc */ + __u32 io_int_word; /* 0x00c0 */ + __u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */ + __u32 stfl_fac_list; /* 0x00c8 */ + __u8 pad_0x00cc[0x00e8-0x00cc]; /* 0x00cc */ + __u32 mcck_interruption_code[2]; /* 0x00e8 */ + __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */ + __u32 external_damage_code; /* 0x00f4 */ + addr_t failing_storage_address; /* 0x00f8 */ + __u8 pad_0x0100[0x0120-0x0100]; /* 0x0100 */ + psw_t restart_old_psw; /* 0x0120 */ + psw_t external_old_psw; /* 0x0130 */ + psw_t svc_old_psw; /* 0x0140 */ + psw_t program_old_psw; /* 0x0150 */ + psw_t mcck_old_psw; /* 0x0160 */ + psw_t io_old_psw; /* 0x0170 */ + __u8 pad_0x0180[0x01a0-0x0180]; /* 0x0180 */ + psw_t restart_psw; /* 0x01a0 */ + psw_t external_new_psw; /* 0x01b0 */ + psw_t svc_new_psw; /* 0x01c0 */ + psw_t program_new_psw; /* 0x01d0 */ + psw_t mcck_new_psw; /* 0x01e0 */ + psw_t io_new_psw; /* 0x01f0 */ + + /* Entry/exit save area & return psws. */ + __u64 save_area[16]; /* 0x0200 */ + psw_t return_psw; /* 0x0280 */ + psw_t return_mcck_psw; /* 0x0290 */ + + /* CPU accounting and timing values. */ + __u64 sync_enter_timer; /* 0x02a0 */ + __u64 async_enter_timer; /* 0x02a8 */ + __u64 exit_timer; /* 0x02b0 */ + __u64 user_timer; /* 0x02b8 */ + __u64 system_timer; /* 0x02c0 */ + __u64 steal_timer; /* 0x02c8 */ + __u64 last_update_timer; /* 0x02d0 */ + __u64 last_update_clock; /* 0x02d8 */ + + /* Current process. */ + __u64 current_task; /* 0x02e0 */ + __u64 thread_info; /* 0x02e8 */ + __u64 kernel_stack; /* 0x02f0 */ + + /* Interrupt and panic stack. */ + __u64 async_stack; /* 0x02f8 */ + __u64 panic_stack; /* 0x0300 */ + + /* Address space pointer. */ + __u64 kernel_asce; /* 0x0308 */ + __u64 user_asce; /* 0x0310 */ + __u64 user_exec_asce; /* 0x0318 */ + + /* SMP info area */ + cpuid_t cpu_id; /* 0x0320 */ + __u32 cpu_nr; /* 0x0328 */ + __u32 softirq_pending; /* 0x032c */ + __u64 percpu_offset; /* 0x0330 */ + __u64 ext_call_fast; /* 0x0338 */ + __u64 int_clock; /* 0x0340 */ + __u64 clock_comparator; /* 0x0348 */ + __u64 vdso_per_cpu_data; /* 0x0350 */ + __u8 pad_0x0358[0x0380-0x0358]; /* 0x0358 */ + + /* Interrupt response block. */ + __u8 irb[64]; /* 0x0380 */ /* Per cpu primary space access list */ - __u8 pad_0xe04[0xe38-0xe04]; /* 0xe04 */ - __u64 vdso_per_cpu_data; /* 0xe38 */ - __u32 paste[16]; /* 0xe40 */ - - __u8 pad13[0x11b8-0xe80]; /* 0xe80 */ - - /* 64 bit extparam used for pfault, diag 250 etc */ - __u64 ext_params2; /* 0x11B8 */ - - __u8 pad14[0x1200-0x11C0]; /* 0x11C0 */ - - /* System info area */ - - __u64 floating_pt_save_area[16]; /* 0x1200 */ - __u64 gpregs_save_area[16]; /* 0x1280 */ - __u32 st_status_fixed_logout[4]; /* 0x1300 */ - __u8 pad15[0x1318-0x1310]; /* 0x1310 */ - __u32 prefixreg_save_area; /* 0x1318 */ - __u32 fpt_creg_save_area; /* 0x131c */ - __u8 pad16[0x1324-0x1320]; /* 0x1320 */ - __u32 tod_progreg_save_area; /* 0x1324 */ - __u32 cpu_timer_save_area[2]; /* 0x1328 */ - __u32 clock_comp_save_area[2]; /* 0x1330 */ - __u8 pad17[0x1340-0x1338]; /* 0x1338 */ - __u32 access_regs_save_area[16]; /* 0x1340 */ - __u64 cregs_save_area[16]; /* 0x1380 */ + __u32 paste[16]; /* 0x03c0 */ + + __u8 pad_0x0400[0x0e00-0x0400]; /* 0x0400 */ + + /* + * 0xe00 contains the address of the IPL Parameter Information + * block. Dump tools need IPIB for IPL after dump. + * Note: do not change the position of any fields in 0x0e00-0x0f00 + */ + __u64 ipib; /* 0x0e00 */ + __u32 ipib_checksum; /* 0x0e08 */ + __u8 pad_0x0e0c[0x11b8-0x0e0c]; /* 0x0e0c */ + + /* 64 bit extparam used for pfault/diag 250: defined by architecture */ + __u64 ext_params2; /* 0x11B8 */ + __u8 pad_0x11c0[0x1200-0x11C0]; /* 0x11C0 */ + + /* CPU register save area: defined by architecture */ + __u64 floating_pt_save_area[16]; /* 0x1200 */ + __u64 gpregs_save_area[16]; /* 0x1280 */ + __u32 st_status_fixed_logout[4]; /* 0x1300 */ + __u8 pad_0x1310[0x1318-0x1310]; /* 0x1310 */ + __u32 prefixreg_save_area; /* 0x1318 */ + __u32 fpt_creg_save_area; /* 0x131c */ + __u8 pad_0x1320[0x1324-0x1320]; /* 0x1320 */ + __u32 tod_progreg_save_area; /* 0x1324 */ + __u32 cpu_timer_save_area[2]; /* 0x1328 */ + __u32 clock_comp_save_area[2]; /* 0x1330 */ + __u8 pad_0x1338[0x1340-0x1338]; /* 0x1338 */ + __u32 access_regs_save_area[16]; /* 0x1340 */ + __u64 cregs_save_area[16]; /* 0x1380 */ /* align to the top of the prefix area */ - - __u8 pad18[0x2000-0x1400]; /* 0x1400 */ + __u8 pad_0x1400[0x2000-0x1400]; /* 0x1400 */ #endif /* !__s390x__ */ } __attribute__((packed)); /* End structure*/ @@ -433,8 +440,6 @@ static inline __u32 store_prefix(void) return address; } -#define __PANIC_MAGIC 0xDEADC0DE - #endif #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) static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk) { - cpu_set(smp_processor_id(), next->cpu_vm_mask); + cpumask_set_cpu(smp_processor_id(), mm_cpumask(next)); update_mm(next, tsk); } 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 @@ +/* + * Machine check handler definitions + * + * Copyright IBM Corp. 2000,2009 + * Author(s): Ingo Adlung <adlung@de.ibm.com>, + * Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Cornelia Huck <cornelia.huck@de.ibm.com>, + * Heiko Carstens <heiko.carstens@de.ibm.com>, + */ + +#ifndef _ASM_S390_NMI_H +#define _ASM_S390_NMI_H + +#include <linux/types.h> + +struct mci { + __u32 sd : 1; /* 00 system damage */ + __u32 pd : 1; /* 01 instruction-processing damage */ + __u32 sr : 1; /* 02 system recovery */ + __u32 : 1; /* 03 */ + __u32 cd : 1; /* 04 timing-facility damage */ + __u32 ed : 1; /* 05 external damage */ + __u32 : 1; /* 06 */ + __u32 dg : 1; /* 07 degradation */ + __u32 w : 1; /* 08 warning pending */ + __u32 cp : 1; /* 09 channel-report pending */ + __u32 sp : 1; /* 10 service-processor damage */ + __u32 ck : 1; /* 11 channel-subsystem damage */ + __u32 : 2; /* 12-13 */ + __u32 b : 1; /* 14 backed up */ + __u32 : 1; /* 15 */ + __u32 se : 1; /* 16 storage error uncorrected */ + __u32 sc : 1; /* 17 storage error corrected */ + __u32 ke : 1; /* 18 storage-key error uncorrected */ + __u32 ds : 1; /* 19 storage degradation */ + __u32 wp : 1; /* 20 psw mwp validity */ + __u32 ms : 1; /* 21 psw mask and key validity */ + __u32 pm : 1; /* 22 psw program mask and cc validity */ + __u32 ia : 1; /* 23 psw instruction address validity */ + __u32 fa : 1; /* 24 failing storage address validity */ + __u32 : 1; /* 25 */ + __u32 ec : 1; /* 26 external damage code validity */ + __u32 fp : 1; /* 27 floating point register validity */ + __u32 gr : 1; /* 28 general register validity */ + __u32 cr : 1; /* 29 control register validity */ + __u32 : 1; /* 30 */ + __u32 st : 1; /* 31 storage logical validity */ + __u32 ie : 1; /* 32 indirect storage error */ + __u32 ar : 1; /* 33 access register validity */ + __u32 da : 1; /* 34 delayed access exception */ + __u32 : 7; /* 35-41 */ + __u32 pr : 1; /* 42 tod programmable register validity */ + __u32 fc : 1; /* 43 fp control register validity */ + __u32 ap : 1; /* 44 ancillary report */ + __u32 : 1; /* 45 */ + __u32 ct : 1; /* 46 cpu timer validity */ + __u32 cc : 1; /* 47 clock comparator validity */ + __u32 : 16; /* 47-63 */ +}; + +struct pt_regs; + +extern void s390_handle_mcck(void); +extern void s390_do_machine_check(struct pt_regs *regs); + +#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) asm volatile("stidp 0(%1)" : "=m" (*ptr) : "a" (ptr)); } -struct cpuinfo_S390 -{ - cpuid_t cpu_id; - __u16 cpu_addr; - __u16 cpu_nr; - unsigned long loops_per_jiffy; - unsigned long *pgd_quick; -#ifdef __s390x__ - unsigned long *pmd_quick; -#endif /* __s390x__ */ - unsigned long *pte_quick; - unsigned long pgtable_cache_sz; -}; - extern void s390_adjust_jiffies(void); -extern void print_cpu_info(struct cpuinfo_S390 *); +extern void print_cpu_info(void); extern int get_cpu_capability(unsigned int *); /* 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 @@ #define NUM_CRS 16 #define NUM_ACRS 16 +#define NUM_CR_WORDS 3 + #define FPR_SIZE 8 #define FPC_SIZE 4 #define FPC_PAD_SIZE 4 /* gcc insists on aligning the fpregs */ @@ -334,7 +336,7 @@ struct pt_regs */ typedef struct { - unsigned long cr[3]; + unsigned long cr[NUM_CR_WORDS]; } per_cr_words; #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, int, int, unsigned long); /* qdio errors reported to the upper-layer program */ +#define QDIO_ERROR_SIGA_TARGET 0x02 #define QDIO_ERROR_SIGA_ACCESS_EXCEPTION 0x10 #define QDIO_ERROR_SIGA_BUSY 0x20 #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); #define PROC_CHANGE_PENALTY 20 /* Schedule penalty */ -#define raw_smp_processor_id() (S390_lowcore.cpu_data.cpu_nr) - -static inline __u16 hard_smp_processor_id(void) -{ - return stap(); -} +#define raw_smp_processor_id() (S390_lowcore.cpu_nr) /* * 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) static inline char *strcpy(char *dst, const char *src) { +#if __GNUC__ < 4 register int r0 asm("0") = 0; char *ret = dst; @@ -109,10 +110,14 @@ static inline char *strcpy(char *dst, const char *src) : "+&a" (dst), "+&a" (src) : "d" (r0) : "cc", "memory"); return ret; +#else + return __builtin_strcpy(dst, src); +#endif } static inline size_t strlen(const char *s) { +#if __GNUC__ < 4 register unsigned long r0 asm("0") = 0; const char *tmp = s; @@ -121,6 +126,9 @@ static inline size_t strlen(const char *s) " jo 0b" : "+d" (r0), "+a" (tmp) : : "cc"); return r0 - (unsigned long) s; +#else + return __builtin_strlen(s); +#endif } static 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) : "+a" (end), "+a" (tmp) : "d" (r0) : "cc"); return end - s; } - +#else /* IN_ARCH_STRING_C */ +void *memchr(const void * s, int c, size_t n); +void *memscan(void *s, int c, size_t n); +char *strcat(char *dst, const char *src); +char *strcpy(char *dst, const char *src); +size_t strlen(const char *s); +size_t strnlen(const char * s, size_t n); #endif /* !IN_ARCH_STRING_C */ #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 { char reserved_1[24]; } vm[8]; + char reserved_544[3552]; }; static 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) * If the process only ran on the local cpu, do a local flush. */ local_cpumask = cpumask_of_cpu(smp_processor_id()); - if (cpus_equal(mm->cpu_vm_mask, local_cpumask)) + if (cpumask_equal(mm_cpumask(mm), &local_cpumask)) __tlb_flush_local(); else __tlb_flush_global(); @@ -73,7 +73,7 @@ static inline void __tlb_flush_idte(unsigned long asce) static inline void __tlb_flush_mm(struct mm_struct * mm) { - if (unlikely(cpus_empty(mm->cpu_vm_mask))) + if (unlikely(cpumask_empty(mm_cpumask(mm)))) return; /* * 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 @@ #define mc_capable() (1) -cpumask_t cpu_coregroup_map(unsigned int cpu); const struct cpumask *cpu_coregroup_mask(unsigned int cpu); extern 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 __u16 day; } __attribute__ ((packed)); -struct vtoc_volume_label +struct vtoc_volume_label_cdl { char volkey[4]; /* volume key = volume label */ char vollbl[4]; /* volume label */ @@ -56,6 +56,14 @@ struct vtoc_volume_label char res3[29]; /* reserved */ } __attribute__ ((packed)); +struct vtoc_volume_label_ldl { + char vollbl[4]; /* volume label */ + char volid[6]; /* volume identifier */ + char res3[69]; /* reserved */ + char ldl_version; /* version number, valid for ldl format */ + __u64 formatted_blocks; /* valid when ldl_version >= f2 */ +} __attribute__ ((packed)); + struct vtoc_extent { __u8 typeind; /* extent type indicator */ @@ -140,7 +148,11 @@ struct vtoc_format4_label char res2[10]; /* reserved */ __u8 DS4EFLVL; /* extended free-space management level */ struct vtoc_cchhb DS4EFPTR; /* pointer to extended free-space info */ - char res3[9]; /* reserved */ + char res3; /* reserved */ + __u32 DS4DCYL; /* number of logical cyls */ + char res4[2]; /* reserved */ + __u8 DS4DEVF2; /* device flags */ + char res5; /* reserved */ } __attribute__ ((packed)); struct 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 # CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' +CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w + obj-y := bitmap.o traps.o time.o process.o base.o early.o setup.o \ processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o \ s390_ext.o debug.o irq.o ipl.o dis.o diag.o mem_detect.o \ - vdso.o vtime.o + vdso.o vtime.o sysinfo.o nmi.o obj-y += $(if $(CONFIG_64BIT),entry64.o,entry.o) obj-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 @@ -/* - * arch/s390/kernel/bitmap.S - * Bitmaps for set_bit, clear_bit, test_and_set_bit, ... - * See include/asm-s390/{bitops.h|posix_types.h} for details - * - * S390 version - * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation - * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), - */ - - .globl _oi_bitmap -_oi_bitmap: - .byte 0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80 - - .globl _ni_bitmap -_ni_bitmap: - .byte 0xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,0x7F - - .globl _zb_findmap -_zb_findmap: - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,6 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,7 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,6 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4 - .byte 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,8 - - .globl _sb_findmap -_sb_findmap: - .byte 8,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 6,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 7,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 6,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - .byte 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 - 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 @@ +/* + * Bitmaps for set_bit, clear_bit, test_and_set_bit, ... + * See include/asm/{bitops.h|posix_types.h} for details + * + * Copyright IBM Corp. 1999,2009 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>, + */ + +#include <linux/bitops.h> +#include <linux/module.h> + +const char _oi_bitmap[] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }; +EXPORT_SYMBOL(_oi_bitmap); + +const char _ni_bitmap[] = { 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f }; +EXPORT_SYMBOL(_ni_bitmap); + +const char _zb_findmap[] = { + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,6, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,7, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,6, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,5, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,4, + 0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,8 }; +EXPORT_SYMBOL(_zb_findmap); + +const char _sb_findmap[] = { + 8,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 6,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 7,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 6,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 5,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0, + 4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0 }; +EXPORT_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 @@ #ifndef _PTRACE32_H #define _PTRACE32_H +#include <asm/ptrace.h> /* needed for NUM_CR_WORDS */ #include "compat_linux.h" /* needed for psw_compat_t */ typedef struct { - __u32 cr[3]; + __u32 cr[NUM_CR_WORDS]; } per_cr_words32; typedef 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, static int debug_open(struct inode *inode, struct file *file) { - int i = 0, rc = 0; + int i, rc = 0; file_private_info_t *p_info; debug_info_t *debug_info, *debug_info_snapshot; @@ -642,8 +642,7 @@ found: p_info = kmalloc(sizeof(file_private_info_t), GFP_KERNEL); if(!p_info){ - if(debug_info_snapshot) - debug_info_free(debug_info_snapshot); + debug_info_free(debug_info_snapshot); rc = -ENOMEM; goto out; } @@ -698,8 +697,7 @@ debug_info_t *debug_register_mode(const char *name, int pages_per_area, if ((uid != 0) || (gid != 0)) pr_warning("Root becomes the owner of all s390dbf files " "in sysfs\n"); - if (!initialized) - BUG(); + BUG_ON(!initialized); mutex_lock(&debug_mutex); /* create new debug_info */ @@ -1156,7 +1154,6 @@ debug_unregister_view(debug_info_t * id, struct debug_view *view) else { debugfs_remove(id->debugfs_entries[i]); id->views[i] = NULL; - rc = 0; } spin_unlock_irqrestore(&id->lock, flags); out: 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 @@ * Heiko Carstens <heiko.carstens@de.ibm.com> */ +#include <linux/compiler.h> #include <linux/init.h> #include <linux/errno.h> #include <linux/string.h> @@ -20,6 +21,7 @@ #include <asm/processor.h> #include <asm/sections.h> #include <asm/setup.h> +#include <asm/sysinfo.h> #include <asm/cpcmd.h> #include <asm/sclp.h> #include "entry.h" @@ -173,19 +175,21 @@ static noinline __init void init_kernel_storage_key(void) page_set_storage_key(init_pfn << PAGE_SHIFT, PAGE_DEFAULT_KEY); } +static __initdata struct sysinfo_3_2_2 vmms __aligned(PAGE_SIZE); + static noinline __init void detect_machine_type(void) { - struct cpuinfo_S390 *cpuinfo = &S390_lowcore.cpu_data; - - get_cpu_id(&S390_lowcore.cpu_data.cpu_id); - - /* Running under z/VM ? */ - if (cpuinfo->cpu_id.version == 0xff) - machine_flags |= MACHINE_FLAG_VM; + /* No VM information? Looks like LPAR */ + if (stsi(&vmms, 3, 2, 2) == -ENOSYS) + return; + if (!vmms.count) + return; - /* Running under KVM ? */ - if (cpuinfo->cpu_id.version == 0xfe) + /* Running under KVM? If not we assume z/VM */ + if (!memcmp(vmms.vm[0].cpi, "\xd2\xe5\xd4", 3)) machine_flags |= MACHINE_FLAG_KVM; + else + machine_flags |= MACHINE_FLAG_VM; } static __init void early_pgm_check_handler(void) @@ -348,7 +352,6 @@ static void __init setup_boot_command_line(void) /* copy arch command line */ strlcpy(boot_command_line, COMMAND_LINE, ARCH_COMMAND_LINE_SIZE); - boot_command_line[ARCH_COMMAND_LINE_SIZE - 1] = 0; /* append IPL PARM data to the boot command line */ 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: .org 0x10000 startup:basr %r13,0 # get base .LPG0: + xc 0x200(256),0x200 # partially clear lowcore + xc 0x300(256),0x300 #ifndef CONFIG_MARCH_G5 # 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: lctl %c0,%c15,.Lctl-.LPG1(%r13) # load control registers l %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area # move IPL device to lowcore - mvc __LC_IPLDEV(4),IPL_DEVICE-PARMAREA(%r12) # # Setup stack # 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: lctlg %c0,%c15,.Lctl-.LPG1(%r13) # load control registers lg %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area # move IPL device to lowcore - mvc __LC_IPLDEV(4),IPL_DEVICE+4-PARMAREA(%r12) lghi %r0,__LC_PASTE stg %r0,__LC_VDSO_PER_CPU # 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 @@ #include <asm/ebcdic.h> #include <asm/reset.h> #include <asm/sclp.h> -#include <asm/setup.h> +#include <asm/checksum.h> #define IPL_PARM_BLOCK_VERSION 0 @@ -56,13 +56,14 @@ struct shutdown_trigger { }; /* - * Five shutdown action types are supported: + * The following shutdown action types are supported: */ #define SHUTDOWN_ACTION_IPL_STR "ipl" #define SHUTDOWN_ACTION_REIPL_STR "reipl" #define SHUTDOWN_ACTION_DUMP_STR "dump" #define SHUTDOWN_ACTION_VMCMD_STR "vmcmd" #define SHUTDOWN_ACTION_STOP_STR "stop" +#define SHUTDOWN_ACTION_DUMP_REIPL_STR "dump_reipl" struct shutdown_action { char *name; @@ -146,6 +147,7 @@ static enum ipl_method reipl_method = REIPL_METHOD_DEFAULT; static struct ipl_parameter_block *reipl_block_fcp; static struct ipl_parameter_block *reipl_block_ccw; static struct ipl_parameter_block *reipl_block_nss; +static struct ipl_parameter_block *reipl_block_actual; static int dump_capabilities = DUMP_TYPE_NONE; static enum dump_type dump_type = DUMP_TYPE_NONE; @@ -835,6 +837,7 @@ static int reipl_set_type(enum ipl_type type) reipl_method = REIPL_METHOD_CCW_VM; else reipl_method = REIPL_METHOD_CCW_CIO; + reipl_block_actual = reipl_block_ccw; break; case IPL_TYPE_FCP: if (diag308_set_works) @@ -843,6 +846,7 @@ static int reipl_set_type(enum ipl_type type) reipl_method = REIPL_METHOD_FCP_RO_VM; else reipl_method = REIPL_METHOD_FCP_RO_DIAG; + reipl_block_actual = reipl_block_fcp; break; case IPL_TYPE_FCP_DUMP: reipl_method = REIPL_METHOD_FCP_DUMP; @@ -852,6 +856,7 @@ static int reipl_set_type(enum ipl_type type) reipl_method = REIPL_METHOD_NSS_DIAG; else reipl_method = REIPL_METHOD_NSS; + reipl_block_actual = reipl_block_nss; break; case IPL_TYPE_UNKNOWN: reipl_method = REIPL_METHOD_DEFAULT; @@ -960,7 +965,6 @@ static void reipl_run(struct shutdown_trigger *trigger) diag308(DIAG308_IPL, NULL); break; case REIPL_METHOD_FCP_DUMP: - default: break; } disabled_wait((unsigned long) __builtin_return_address(0)); @@ -1069,10 +1073,12 @@ static int __init reipl_fcp_init(void) { int rc; - if ((!diag308_set_works) && (ipl_info.type != IPL_TYPE_FCP)) - return 0; - if ((!diag308_set_works) && (ipl_info.type == IPL_TYPE_FCP)) - make_attrs_ro(reipl_fcp_attrs); + if (!diag308_set_works) { + if (ipl_info.type == IPL_TYPE_FCP) + make_attrs_ro(reipl_fcp_attrs); + else + return 0; + } reipl_block_fcp = (void *) get_zeroed_page(GFP_KERNEL); if (!reipl_block_fcp) @@ -1253,7 +1259,6 @@ static void dump_run(struct shutdown_trigger *trigger) diag308(DIAG308_DUMP, NULL); break; case DUMP_METHOD_NONE: - default: return; } printk(KERN_EMERG "Dump failed!\n"); @@ -1332,6 +1337,49 @@ static struct shutdown_action __refdata dump_action = { .init = dump_init, }; +static void dump_reipl_run(struct shutdown_trigger *trigger) +{ + preempt_disable(); + /* + * Bypass dynamic address translation (DAT) when storing IPL parameter + * information block address and checksum into the prefix area + * (corresponding to absolute addresses 0-8191). + * When enhanced DAT applies and the STE format control in one, + * the absolute address is formed without prefixing. In this case a + * normal store (stg/st) into the prefix area would no more match to + * absolute addresses 0-8191. + */ +#ifdef CONFIG_64BIT + asm volatile("sturg %0,%1" + :: "a" ((unsigned long) reipl_block_actual), + "a" (&lowcore_ptr[smp_processor_id()]->ipib)); +#else + asm volatile("stura %0,%1" + :: "a" ((unsigned long) reipl_block_actual), + "a" (&lowcore_ptr[smp_processor_id()]->ipib)); +#endif + asm volatile("stura %0,%1" + :: "a" (csum_partial(reipl_block_actual, + reipl_block_actual->hdr.len, 0)), + "a" (&lowcore_ptr[smp_processor_id()]->ipib_checksum)); + preempt_enable(); + dump_run(trigger); +} + +static int __init dump_reipl_init(void) +{ + if (!diag308_set_works) + return -EOPNOTSUPP; + else + return 0; +} + +static struct shutdown_action __refdata dump_reipl_action = { + .name = SHUTDOWN_ACTION_DUMP_REIPL_STR, + .fn = dump_reipl_run, + .init = dump_reipl_init, +}; + /* * vmcmd shutdown action: Trigger vm command on shutdown. */ @@ -1421,7 +1469,8 @@ static struct shutdown_action stop_action = {SHUTDOWN_ACTION_STOP_STR, /* action list */ static struct shutdown_action *shutdown_actions_list[] = { - &ipl_action, &reipl_action, &dump_action, &vmcmd_action, &stop_action}; + &ipl_action, &reipl_action, &dump_reipl_action, &dump_action, + &vmcmd_action, &stop_action}; #define SHUTDOWN_ACTIONS_COUNT (sizeof(shutdown_actions_list) / sizeof(void *)) /* @@ -1434,11 +1483,11 @@ static int set_trigger(const char *buf, struct shutdown_trigger *trigger, size_t len) { int i; + for (i = 0; i < SHUTDOWN_ACTIONS_COUNT; i++) { if (!shutdown_actions_list[i]) continue; - if (strncmp(buf, shutdown_actions_list[i]->name, - strlen(shutdown_actions_list[i]->name)) == 0) { + if (sysfs_streq(buf, shutdown_actions_list[i]->name)) { trigger->action = shutdown_actions_list[i]; return len; } @@ -1672,7 +1721,7 @@ static int on_panic_notify(struct notifier_block *self, static struct notifier_block on_panic_nb = { .notifier_call = on_panic_notify, - .priority = 0, + .priority = INT_MIN, }; void __init setup_ipl(void) @@ -1696,7 +1745,6 @@ void __init setup_ipl(void) sizeof(ipl_info.data.nss.name)); break; case IPL_TYPE_UNKNOWN: - default: /* We have no info to copy */ break; } 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, info->plt_initialized = 1; } if (r_type == R_390_PLTOFF16 || - r_type == R_390_PLTOFF32 - || r_type == R_390_PLTOFF64 - ) + r_type == R_390_PLTOFF32 || + r_type == R_390_PLTOFF64) val = me->arch.plt_offset - me->arch.got_offset + info->plt_offset + rela->r_addend; - else - val = (Elf_Addr) me->module_core + - me->arch.plt_offset + info->plt_offset + - rela->r_addend - loc; + else { + if (!((r_type == R_390_PLT16DBL && + val - loc + 0xffffUL < 0x1ffffeUL) || + (r_type == R_390_PLT32DBL && + val - loc + 0xffffffffULL < 0x1fffffffeULL))) + val = (Elf_Addr) me->module_core + + me->arch.plt_offset + + info->plt_offset; + val += rela->r_addend - loc; + } if (r_type == R_390_PLT16DBL) *(unsigned short *) loc = val >> 1; 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 @@ +/* + * Machine check handler + * + * Copyright IBM Corp. 2000,2009 + * Author(s): Ingo Adlung <adlung@de.ibm.com>, + * Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Cornelia Huck <cornelia.huck@de.ibm.com>, + * Heiko Carstens <heiko.carstens@de.ibm.com>, + */ + +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/time.h> +#include <linux/module.h> +#include <asm/lowcore.h> +#include <asm/smp.h> +#include <asm/etr.h> +#include <asm/cpu.h> +#include <asm/nmi.h> +#include <asm/crw.h> + +struct mcck_struct { + int kill_task; + int channel_report; + int warning; + unsigned long long mcck_code; +}; + +static DEFINE_PER_CPU(struct mcck_struct, cpu_mcck); + +static NORET_TYPE void s390_handle_damage(char *msg) +{ + smp_send_stop(); + disabled_wait((unsigned long) __builtin_return_address(0)); + while (1); +} + +/* + * Main machine check handler function. Will be called with interrupts enabled + * or disabled and machine checks enabled or disabled. + */ +void s390_handle_mcck(void) +{ + unsigned long flags; + struct mcck_struct mcck; + + /* + * Disable machine checks and get the current state of accumulated + * machine checks. Afterwards delete the old state and enable machine + * checks again. + */ + local_irq_save(flags); + local_mcck_disable(); + mcck = __get_cpu_var(cpu_mcck); + memset(&__get_cpu_var(cpu_mcck), 0, sizeof(struct mcck_struct)); + clear_thread_flag(TIF_MCCK_PENDING); + local_mcck_enable(); + local_irq_restore(flags); + + if (mcck.channel_report) + crw_handle_channel_report(); + /* + * A warning may remain for a prolonged period on the bare iron. + * (actually until the machine is powered off, or the problem is gone) + * So we just stop listening for the WARNING MCH and avoid continuously + * being interrupted. One caveat is however, that we must do this per + * processor and cannot use the smp version of ctl_clear_bit(). + * On VM we only get one interrupt per virtally presented machinecheck. + * Though one suffices, we may get one interrupt per (virtual) cpu. + */ + if (mcck.warning) { /* WARNING pending ? */ + static int mchchk_wng_posted = 0; + + /* Use single cpu clear, as we cannot handle smp here. */ + __ctl_clear_bit(14, 24); /* Disable WARNING MCH */ + if (xchg(&mchchk_wng_posted, 1) == 0) + kill_cad_pid(SIGPWR, 1); + } + if (mcck.kill_task) { + local_irq_enable(); + printk(KERN_EMERG "mcck: Terminating task because of machine " + "malfunction (code 0x%016llx).\n", mcck.mcck_code); + printk(KERN_EMERG "mcck: task: %s, pid: %d.\n", + current->comm, current->pid); + do_exit(SIGSEGV); + } +} +EXPORT_SYMBOL_GPL(s390_handle_mcck); + +/* + * returns 0 if all registers could be validated + * returns 1 otherwise + */ +static int notrace s390_revalidate_registers(struct mci *mci) +{ + int kill_task; + u64 tmpclock; + u64 zero; + void *fpt_save_area, *fpt_creg_save_area; + + kill_task = 0; + zero = 0; + + if (!mci->gr) { + /* + * General purpose registers couldn't be restored and have + * unknown contents. Process needs to be terminated. + */ + kill_task = 1; + } + if (!mci->fp) { + /* + * Floating point registers can't be restored and + * therefore the process needs to be terminated. + */ + kill_task = 1; + } +#ifndef CONFIG_64BIT + asm volatile( + " ld 0,0(%0)\n" + " ld 2,8(%0)\n" + " ld 4,16(%0)\n" + " ld 6,24(%0)" + : : "a" (&S390_lowcore.floating_pt_save_area)); +#endif + + if (MACHINE_HAS_IEEE) { +#ifdef CONFIG_64BIT + fpt_save_area = &S390_lowcore.floating_pt_save_area; + fpt_creg_save_area = &S390_lowcore.fpt_creg_save_area; +#else + fpt_save_area = (void *) S390_lowcore.extended_save_area_addr; + fpt_creg_save_area = fpt_save_area + 128; +#endif + if (!mci->fc) { + /* + * Floating point control register can't be restored. + * Task will be terminated. + */ + asm volatile("lfpc 0(%0)" : : "a" (&zero), "m" (zero)); + kill_task = 1; + + } else + asm volatile("lfpc 0(%0)" : : "a" (fpt_creg_save_area)); + + asm volatile( + " ld 0,0(%0)\n" + " ld 1,8(%0)\n" + " ld 2,16(%0)\n" + " ld 3,24(%0)\n" + " ld 4,32(%0)\n" + " ld 5,40(%0)\n" + " ld 6,48(%0)\n" + " ld 7,56(%0)\n" + " ld 8,64(%0)\n" + " ld 9,72(%0)\n" + " ld 10,80(%0)\n" + " ld 11,88(%0)\n" + " ld 12,96(%0)\n" + " ld 13,104(%0)\n" + " ld 14,112(%0)\n" + " ld 15,120(%0)\n" + : : "a" (fpt_save_area)); + } + /* Revalidate access registers */ + asm volatile( + " lam 0,15,0(%0)" + : : "a" (&S390_lowcore.access_regs_save_area)); + if (!mci->ar) { + /* + * Access registers have unknown contents. + * Terminating task. + */ + kill_task = 1; + } + /* Revalidate control registers */ + if (!mci->cr) { + /* + * Control registers have unknown contents. + * Can't recover and therefore stopping machine. + */ + s390_handle_damage("invalid control registers."); + } else { +#ifdef CONFIG_64BIT + asm volatile( + " lctlg 0,15,0(%0)" + : : "a" (&S390_lowcore.cregs_save_area)); +#else + asm volatile( + " lctl 0,15,0(%0)" + : : "a" (&S390_lowcore.cregs_save_area)); +#endif + } + /* + * We don't even try to revalidate the TOD register, since we simply + * can't write something sensible into that register. + */ +#ifdef CONFIG_64BIT + /* + * See if we can revalidate the TOD programmable register with its + * old contents (should be zero) otherwise set it to zero. + */ + if (!mci->pr) + asm volatile( + " sr 0,0\n" + " sckpf" + : : : "0", "cc"); + else + asm volatile( + " l 0,0(%0)\n" + " sckpf" + : : "a" (&S390_lowcore.tod_progreg_save_area) + : "0", "cc"); +#endif + /* Revalidate clock comparator register */ + asm volatile( + " stck 0(%1)\n" + " sckc 0(%1)" + : "=m" (tmpclock) : "a" (&(tmpclock)) : "cc", "memory"); + + /* Check if old PSW is valid */ + if (!mci->wp) + /* + * Can't tell if we come from user or kernel mode + * -> stopping machine. + */ + s390_handle_damage("old psw invalid."); + + if (!mci->ms || !mci->pm || !mci->ia) + kill_task = 1; + + return kill_task; +} + +#define MAX_IPD_COUNT 29 +#define MAX_IPD_TIME (5 * 60 * USEC_PER_SEC) /* 5 minutes */ + +#define ED_STP_ISLAND 6 /* External damage STP island check */ +#define ED_STP_SYNC 7 /* External damage STP sync check */ +#define ED_ETR_SYNC 12 /* External damage ETR sync check */ +#define ED_ETR_SWITCH 13 /* External damage ETR switch to local */ + +/* + * machine check handler. + */ +void notrace s390_do_machine_check(struct pt_regs *regs) +{ + static int ipd_count; + static DEFINE_SPINLOCK(ipd_lock); + static unsigned long long last_ipd; + struct mcck_struct *mcck; + unsigned long long tmp; + struct mci *mci; + int umode; + + lockdep_off(); + s390_idle_check(); + + mci = (struct mci *) &S390_lowcore.mcck_interruption_code; + mcck = &__get_cpu_var(cpu_mcck); + umode = user_mode(regs); + + if (mci->sd) { + /* System damage -> stopping machine */ + s390_handle_damage("received system damage machine check."); + } + if (mci->pd) { + if (mci->b) { + /* Processing backup -> verify if we can survive this */ + u64 z_mcic, o_mcic, t_mcic; +#ifdef CONFIG_64BIT + z_mcic = (1ULL<<63 | 1ULL<<59 | 1ULL<<29); + o_mcic = (1ULL<<43 | 1ULL<<42 | 1ULL<<41 | 1ULL<<40 | + 1ULL<<36 | 1ULL<<35 | 1ULL<<34 | 1ULL<<32 | + 1ULL<<30 | 1ULL<<21 | 1ULL<<20 | 1ULL<<17 | + 1ULL<<16); +#else + z_mcic = (1ULL<<63 | 1ULL<<59 | 1ULL<<57 | 1ULL<<50 | + 1ULL<<29); + o_mcic = (1ULL<<43 | 1ULL<<42 | 1ULL<<41 | 1ULL<<40 | + 1ULL<<36 | 1ULL<<35 | 1ULL<<34 | 1ULL<<32 | + 1ULL<<30 | 1ULL<<20 | 1ULL<<17 | 1ULL<<16); +#endif + t_mcic = *(u64 *)mci; + + if (((t_mcic & z_mcic) != 0) || + ((t_mcic & o_mcic) != o_mcic)) { + s390_handle_damage("processing backup machine " + "check with damage."); + } + + /* + * Nullifying exigent condition, therefore we might + * retry this instruction. + */ + spin_lock(&ipd_lock); + tmp = get_clock(); + if (((tmp - last_ipd) >> 12) < MAX_IPD_TIME) + ipd_count++; + else + ipd_count = 1; + last_ipd = tmp; + if (ipd_count == MAX_IPD_COUNT) + s390_handle_damage("too many ipd retries."); + spin_unlock(&ipd_lock); + } else { + /* Processing damage -> stopping machine */ + s390_handle_damage("received instruction processing " + "damage machine check."); + } + } + if (s390_revalidate_registers(mci)) { + if (umode) { + /* + * Couldn't restore all register contents while in + * user mode -> mark task for termination. + */ + mcck->kill_task = 1; + mcck->mcck_code = *(unsigned long long *) mci; + set_thread_flag(TIF_MCCK_PENDING); + } else { + /* + * Couldn't restore all register contents while in + * kernel mode -> stopping machine. + */ + s390_handle_damage("unable to revalidate registers."); + } + } + if (mci->cd) { + /* Timing facility damage */ + s390_handle_damage("TOD clock damaged"); + } + if (mci->ed && mci->ec) { + /* External damage */ + if (S390_lowcore.external_damage_code & (1U << ED_ETR_SYNC)) + etr_sync_check(); + if (S390_lowcore.external_damage_code & (1U << ED_ETR_SWITCH)) + etr_switch_to_local(); + if (S390_lowcore.external_damage_code & (1U << ED_STP_SYNC)) + stp_sync_check(); + if (S390_lowcore.external_damage_code & (1U << ED_STP_ISLAND)) + stp_island_check(); + } + if (mci->se) + /* Storage error uncorrected */ + s390_handle_damage("received storage error uncorrected " + "machine check."); + if (mci->ke) + /* Storage key-error uncorrected */ + s390_handle_damage("received storage key-error uncorrected " + "machine check."); + if (mci->ds && mci->fa) + /* Storage degradation */ + s390_handle_damage("received storage degradation machine " + "check."); + if (mci->cp) { + /* Channel report word pending */ + mcck->channel_report = 1; + set_thread_flag(TIF_MCCK_PENDING); + } + if (mci->w) { + /* Warning pending */ + mcck->warning = 1; + set_thread_flag(TIF_MCCK_PENDING); + } + lockdep_on(); +} + +static int __init machine_check_init(void) +{ + ctl_set_bit(14, 25); /* enable external damage MCH */ + ctl_set_bit(14, 27); /* enable system recovery MCH */ + ctl_set_bit(14, 24); /* enable warning MCH */ + return 0; +} +arch_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 @@ /* - * arch/s390/kernel/process.c + * This file handles the architecture dependent parts of process handling. * - * S390 version - * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation - * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), - * Hartmut Penner (hp@de.ibm.com), - * Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com), - * - * Derived from "arch/i386/kernel/process.c" - * Copyright (C) 1995, Linus Torvalds - */ - -/* - * This file handles the architecture-dependent parts of process handling.. + * Copyright IBM Corp. 1999,2009 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Hartmut Penner <hp@de.ibm.com>, + * Denis Joseph Barrow, */ #include <linux/compiler.h> @@ -47,6 +39,7 @@ #include <asm/processor.h> #include <asm/irq.h> #include <asm/timer.h> +#include <asm/nmi.h> #include "entry.h" asmlinkage void ret_from_fork(void) asm ("ret_from_fork"); @@ -76,7 +69,6 @@ unsigned long thread_saved_pc(struct task_struct *tsk) return sf->gprs[8]; } -extern void s390_handle_mcck(void); /* * The idle loop on a S390... */ @@ -149,6 +141,7 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, NULL, NULL); } +EXPORT_SYMBOL(kernel_thread); /* * Free current thread data structures etc.. @@ -168,34 +161,35 @@ void release_thread(struct task_struct *dead_task) } int copy_thread(int nr, unsigned long clone_flags, unsigned long new_stackp, - unsigned long unused, - struct task_struct * p, struct pt_regs * regs) + unsigned long unused, + struct task_struct *p, struct pt_regs *regs) { - struct fake_frame - { - struct stack_frame sf; - struct pt_regs childregs; - } *frame; - - frame = container_of(task_pt_regs(p), struct fake_frame, childregs); - p->thread.ksp = (unsigned long) frame; + struct thread_info *ti; + struct fake_frame + { + struct stack_frame sf; + struct pt_regs childregs; + } *frame; + + frame = container_of(task_pt_regs(p), struct fake_frame, childregs); + p->thread.ksp = (unsigned long) frame; /* Store access registers to kernel stack of new process. */ - frame->childregs = *regs; + frame->childregs = *regs; frame->childregs.gprs[2] = 0; /* child returns 0 on fork. */ - frame->childregs.gprs[15] = new_stackp; - frame->sf.back_chain = 0; + frame->childregs.gprs[15] = new_stackp; + frame->sf.back_chain = 0; - /* new return point is ret_from_fork */ - frame->sf.gprs[8] = (unsigned long) ret_from_fork; + /* new return point is ret_from_fork */ + frame->sf.gprs[8] = (unsigned long) ret_from_fork; - /* fake return stack for resume(), don't go back to schedule */ - frame->sf.gprs[9] = (unsigned long) frame; + /* fake return stack for resume(), don't go back to schedule */ + frame->sf.gprs[9] = (unsigned long) frame; /* Save access registers to new thread structure. */ save_access_regs(&p->thread.acrs[0]); #ifndef CONFIG_64BIT - /* + /* * save fprs to current->thread.fp_regs to merge them with * the emulated registers and then copy the result to the child. */ @@ -220,10 +214,13 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long new_stackp, #endif /* CONFIG_64BIT */ /* start new process with ar4 pointing to the correct address space */ p->thread.mm_segment = get_fs(); - /* Don't copy debug registers */ - memset(&p->thread.per_info,0,sizeof(p->thread.per_info)); - - return 0; + /* Don't copy debug registers */ + memset(&p->thread.per_info, 0, sizeof(p->thread.per_info)); + /* Initialize per thread user and system timer values */ + ti = task_thread_info(p); + ti->user_timer = 0; + ti->system_timer = 0; + return 0; } SYSCALL_DEFINE0(fork) @@ -311,7 +308,7 @@ out: int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs) { #ifndef CONFIG_64BIT - /* + /* * save fprs to current->thread.fp_regs to merge them with * the emulated registers and then copy the result to the dump. */ @@ -322,6 +319,7 @@ int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs) #endif /* CONFIG_64BIT */ return 1; } +EXPORT_SYMBOL(dump_fpu); unsigned long get_wchan(struct task_struct *p) { @@ -346,4 +344,3 @@ unsigned long get_wchan(struct task_struct *p) } return 0; } - 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 @@ #include <asm/lowcore.h> #include <asm/param.h> -void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo) +void __cpuinit print_cpu_info(void) { pr_info("Processor %d started, address %d, identification %06X\n", - cpuinfo->cpu_nr, cpuinfo->cpu_addr, cpuinfo->cpu_id.ident); + S390_lowcore.cpu_nr, S390_lowcore.cpu_addr, + S390_lowcore.cpu_id.ident); } /* @@ -30,48 +31,46 @@ void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo) static int show_cpuinfo(struct seq_file *m, void *v) { - static const char *hwcap_str[8] = { + static const char *hwcap_str[9] = { "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp", - "edat" + "edat", "etf3eh" }; - struct cpuinfo_S390 *cpuinfo; - unsigned long n = (unsigned long) v - 1; - int i; + struct _lowcore *lc; + unsigned long n = (unsigned long) v - 1; + int i; - s390_adjust_jiffies(); - preempt_disable(); - if (!n) { - seq_printf(m, "vendor_id : IBM/S390\n" - "# processors : %i\n" - "bogomips per cpu: %lu.%02lu\n", - num_online_cpus(), loops_per_jiffy/(500000/HZ), - (loops_per_jiffy/(5000/HZ))%100); - seq_puts(m, "features\t: "); - for (i = 0; i < 8; i++) - if (hwcap_str[i] && (elf_hwcap & (1UL << i))) - seq_printf(m, "%s ", hwcap_str[i]); - seq_puts(m, "\n"); - } + s390_adjust_jiffies(); + preempt_disable(); + if (!n) { + seq_printf(m, "vendor_id : IBM/S390\n" + "# processors : %i\n" + "bogomips per cpu: %lu.%02lu\n", + num_online_cpus(), loops_per_jiffy/(500000/HZ), + (loops_per_jiffy/(5000/HZ))%100); + seq_puts(m, "features\t: "); + for (i = 0; i < 9; i++) + if (hwcap_str[i] && (elf_hwcap & (1UL << i))) + seq_printf(m, "%s ", hwcap_str[i]); + seq_puts(m, "\n"); + } - if (cpu_online(n)) { + if (cpu_online(n)) { #ifdef CONFIG_SMP - if (smp_processor_id() == n) - cpuinfo = &S390_lowcore.cpu_data; - else - cpuinfo = &lowcore_ptr[n]->cpu_data; + lc = (smp_processor_id() == n) ? + &S390_lowcore : lowcore_ptr[n]; #else - cpuinfo = &S390_lowcore.cpu_data; + lc = &S390_lowcore; #endif - seq_printf(m, "processor %li: " - "version = %02X, " - "identification = %06X, " - "machine = %04X\n", - n, cpuinfo->cpu_id.version, - cpuinfo->cpu_id.ident, - cpuinfo->cpu_id.machine); - } - preempt_enable(); - return 0; + seq_printf(m, "processor %li: " + "version = %02X, " + "identification = %06X, " + "machine = %04X\n", + n, lc->cpu_id.version, + lc->cpu_id.ident, + lc->cpu_id.machine); + } + preempt_enable(); + return 0; } static 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 @@ /* - * arch/s390/kernel/reipl.S - * - * S390 version - * Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation - * Author(s): Holger Smolinski (Holger.Smolinski@de.ibm.com) - Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) + * Copyright IBM Corp 2000,2009 + * Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>, + * Denis Joseph Barrow, */ #include <asm/lowcore.h> @@ -30,7 +27,7 @@ do_reipl_asm: basr %r13,0 mvc __LC_PREFIX_SAVE_AREA-0x1000(4,%r1),0(%r10) stfpc __LC_FP_CREG_SAVE_AREA-0x1000(%r1) stckc .Lclkcmp-.Lpg0(%r13) - mvc __LC_CLOCK_COMP_SAVE_AREA-0x1000(8,%r1),.Lclkcmp-.Lpg0(%r13) + mvc __LC_CLOCK_COMP_SAVE_AREA-0x1000(7,%r1),.Lclkcmp-.Lpg0(%r13) stpt __LC_CPU_TIMER_SAVE_AREA-0x1000(%r1) stg %r13, __LC_PSW_SAVE_AREA-0x1000+8(%r1) 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 @@ -/* - * arch/s390/kernel/s390_ksyms.c - * - * S390 version - */ -#include <linux/highuid.h> #include <linux/module.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/syscalls.h> -#include <linux/interrupt.h> -#include <asm/checksum.h> -#include <asm/cpcmd.h> -#include <asm/delay.h> -#include <asm/pgalloc.h> -#include <asm/setup.h> #include <asm/ftrace.h> -#ifdef CONFIG_IP_MULTICAST -#include <net/arp.h> -#endif - -/* - * memory management - */ -EXPORT_SYMBOL(_oi_bitmap); -EXPORT_SYMBOL(_ni_bitmap); -EXPORT_SYMBOL(_zb_findmap); -EXPORT_SYMBOL(_sb_findmap); - -/* - * binfmt_elf loader - */ -extern int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs); -EXPORT_SYMBOL(dump_fpu); -EXPORT_SYMBOL(empty_zero_page); - -/* - * misc. - */ -EXPORT_SYMBOL(machine_flags); -EXPORT_SYMBOL(__udelay); -EXPORT_SYMBOL(kernel_thread); -EXPORT_SYMBOL(csum_fold); -EXPORT_SYMBOL(console_mode); -EXPORT_SYMBOL(console_devno); -EXPORT_SYMBOL(console_irq); #ifdef CONFIG_FUNCTION_TRACER EXPORT_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); * Machine setup.. */ unsigned int console_mode = 0; +EXPORT_SYMBOL(console_mode); + unsigned int console_devno = -1; +EXPORT_SYMBOL(console_devno); + unsigned int console_irq = -1; +EXPORT_SYMBOL(console_irq); + unsigned long machine_flags; +EXPORT_SYMBOL(machine_flags); + unsigned long elf_hwcap = 0; char elf_platform[ELF_PLATFORM_SIZE]; @@ -86,6 +94,10 @@ volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */ int __initdata memory_end_set; unsigned long __initdata memory_end; +/* An array with a pointer to the lowcore of every CPU. */ +struct _lowcore *lowcore_ptr[NR_CPUS]; +EXPORT_SYMBOL(lowcore_ptr); + /* * This is set up by the setup-routine at boot-time * for S390 need to find out, what we have to setup @@ -109,13 +121,10 @@ static struct resource data_resource = { */ void __cpuinit cpu_init(void) { - int addr = hard_smp_processor_id(); - /* * Store processor id in lowcore (used e.g. in timer_interrupt) */ - get_cpu_id(&S390_lowcore.cpu_data.cpu_id); - S390_lowcore.cpu_data.cpu_addr = addr; + get_cpu_id(&S390_lowcore.cpu_id); /* * Force FPU initialization: @@ -125,8 +134,7 @@ void __cpuinit cpu_init(void) atomic_inc(&init_mm.mm_count); current->active_mm = &init_mm; - if (current->mm) - BUG(); + BUG_ON(current->mm); enter_lazy_tlb(&init_mm, current); } @@ -217,7 +225,7 @@ static void __init conmode_default(void) } } -#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE) +#ifdef CONFIG_ZFCPDUMP static void __init setup_zfcpdump(unsigned int console_devno) { static char str[41]; @@ -289,11 +297,7 @@ static int __init early_parse_mem(char *p) early_param("mem", early_parse_mem); #ifdef CONFIG_S390_SWITCH_AMODE -#ifdef CONFIG_PGSTE -unsigned int switch_amode = 1; -#else unsigned int switch_amode = 0; -#endif EXPORT_SYMBOL_GPL(switch_amode); static int set_amode_and_uaccess(unsigned long user_amode, @@ -414,7 +418,6 @@ setup_lowcore(void) PSW_ADDR_AMODE | (unsigned long) mcck_int_handler; lc->io_new_psw.mask = psw_kernel_bits; lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler; - lc->ipl_device = S390_lowcore.ipl_device; lc->clock_comparator = -1ULL; lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE; lc->async_stack = (unsigned long) @@ -434,6 +437,7 @@ setup_lowcore(void) lc->vdso_per_cpu_data = (unsigned long) &lc->paste[0]; #endif set_prefix((u32)(unsigned long) lc); + lowcore_ptr[0] = lc; } static void __init @@ -510,7 +514,7 @@ static void __init setup_memory_end(void) unsigned long max_mem; int i; -#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE) +#ifdef CONFIG_ZFCPDUMP if (ipl_info.type == IPL_TYPE_FCP_DUMP) { memory_end = ZFCPDUMP_HSA_SIZE; memory_end_set = 1; @@ -677,7 +681,6 @@ setup_memory(void) static void __init setup_hwcaps(void) { static const int stfl_bits[6] = { 0, 2, 7, 17, 19, 21 }; - struct cpuinfo_S390 *cpuinfo = &S390_lowcore.cpu_data; unsigned long long facility_list_extended; unsigned int facility_list; int i; @@ -693,15 +696,22 @@ static void __init setup_hwcaps(void) * Bit 17: the message-security assist is installed * Bit 19: the long-displacement facility is installed * Bit 21: the extended-immediate facility is installed + * Bit 22: extended-translation facility 3 is installed + * Bit 30: extended-translation facility 3 enhancement facility * These get translated to: * HWCAP_S390_ESAN3 bit 0, HWCAP_S390_ZARCH bit 1, * HWCAP_S390_STFLE bit 2, HWCAP_S390_MSA bit 3, - * HWCAP_S390_LDISP bit 4, and HWCAP_S390_EIMM bit 5. + * HWCAP_S390_LDISP bit 4, HWCAP_S390_EIMM bit 5 and + * HWCAP_S390_ETF3EH bit 8 (22 && 30). */ for (i = 0; i < 6; i++) if (facility_list & (1UL << (31 - stfl_bits[i]))) elf_hwcap |= 1UL << i; + if ((facility_list & (1UL << (31 - 22))) + && (facility_list & (1UL << (31 - 30)))) + elf_hwcap |= 1UL << 8; + /* * Check for additional facilities with store-facility-list-extended. * stfle stores doublewords (8 byte) with bit 1ULL<<63 as bit 0 @@ -710,20 +720,22 @@ static void __init setup_hwcaps(void) * How many facility words are stored depends on the number of * doublewords passed to the instruction. The additional facilites * are: - * Bit 43: decimal floating point facility is installed + * Bit 42: decimal floating point facility is installed + * Bit 44: perform floating point operation facility is installed * translated to: - * HWCAP_S390_DFP bit 6. + * HWCAP_S390_DFP bit 6 (42 && 44). */ if ((elf_hwcap & (1UL << 2)) && __stfle(&facility_list_extended, 1) > 0) { - if (facility_list_extended & (1ULL << (64 - 43))) + if ((facility_list_extended & (1ULL << (63 - 42))) + && (facility_list_extended & (1ULL << (63 - 44)))) elf_hwcap |= 1UL << 6; } if (MACHINE_HAS_HPAGE) elf_hwcap |= 1UL << 7; - switch (cpuinfo->cpu_id.machine) { + switch (S390_lowcore.cpu_id.machine) { case 0x9672: #if !defined(CONFIG_64BIT) default: /* Use "g5" as default for 31 bit kernels. */ @@ -816,7 +828,7 @@ setup_arch(char **cmdline_p) setup_lowcore(); cpu_init(); - __cpu_logical_map[0] = S390_lowcore.cpu_data.cpu_addr; + __cpu_logical_map[0] = stap(); s390_init_cpu_topology(); /* 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 @@ #include <linux/delay.h> #include <linux/cache.h> #include <linux/interrupt.h> +#include <linux/irqflags.h> #include <linux/cpu.h> #include <linux/timex.h> #include <linux/bootmem.h> @@ -50,12 +51,6 @@ #include <asm/vdso.h> #include "entry.h" -/* - * An array with a pointer the lowcore of every CPU. - */ -struct _lowcore *lowcore_ptr[NR_CPUS]; -EXPORT_SYMBOL(lowcore_ptr); - static struct task_struct *current_set[NR_CPUS]; static u8 smp_cpu_type; @@ -81,9 +76,7 @@ void smp_send_stop(void) /* Disable all interrupts/machine checks */ __load_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK); - - /* write magic number to zero page (absolute 0) */ - lowcore_ptr[smp_processor_id()]->panic_magic = __PANIC_MAGIC; + trace_hardirqs_off(); /* stop all processors */ for_each_online_cpu(cpu) { @@ -233,7 +226,7 @@ EXPORT_SYMBOL(smp_ctl_clear_bit); */ #define CPU_INIT_NO 1 -#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE) +#ifdef CONFIG_ZFCPDUMP /* * zfcpdump_prefix_array holds prefix registers for the following scenario: @@ -274,7 +267,7 @@ EXPORT_SYMBOL_GPL(zfcpdump_save_areas); static inline void smp_get_save_area(unsigned int cpu, unsigned int phy_cpu) { } -#endif /* CONFIG_ZFCPDUMP || CONFIG_ZFCPDUMP_MODULE */ +#endif /* CONFIG_ZFCPDUMP */ static int cpu_stopped(int cpu) { @@ -304,8 +297,8 @@ static int smp_rescan_cpus_sigp(cpumask_t avail) { int cpu_id, logical_cpu; - logical_cpu = first_cpu(avail); - if (logical_cpu == NR_CPUS) + logical_cpu = cpumask_first(&avail); + if (logical_cpu >= nr_cpu_ids) return 0; for (cpu_id = 0; cpu_id <= 65535; cpu_id++) { if (cpu_known(cpu_id)) @@ -316,8 +309,8 @@ static int smp_rescan_cpus_sigp(cpumask_t avail) continue; cpu_set(logical_cpu, cpu_present_map); smp_cpu_state[logical_cpu] = CPU_STATE_CONFIGURED; - logical_cpu = next_cpu(logical_cpu, avail); - if (logical_cpu == NR_CPUS) + logical_cpu = cpumask_next(logical_cpu, &avail); + if (logical_cpu >= nr_cpu_ids) break; } return 0; @@ -329,8 +322,8 @@ static int smp_rescan_cpus_sclp(cpumask_t avail) int cpu_id, logical_cpu, cpu; int rc; - logical_cpu = first_cpu(avail); - if (logical_cpu == NR_CPUS) + logical_cpu = cpumask_first(&avail); + if (logical_cpu >= nr_cpu_ids) return 0; info = kmalloc(sizeof(*info), GFP_KERNEL); if (!info) @@ -351,8 +344,8 @@ static int smp_rescan_cpus_sclp(cpumask_t avail) smp_cpu_state[logical_cpu] = CPU_STATE_STANDBY; else smp_cpu_state[logical_cpu] = CPU_STATE_CONFIGURED; - logical_cpu = next_cpu(logical_cpu, avail); - if (logical_cpu == NR_CPUS) + logical_cpu = cpumask_next(logical_cpu, &avail); + if (logical_cpu >= nr_cpu_ids) break; } out: @@ -379,7 +372,7 @@ static void __init smp_detect_cpus(void) c_cpus = 1; s_cpus = 0; - boot_cpu_addr = S390_lowcore.cpu_data.cpu_addr; + boot_cpu_addr = __cpu_logical_map[0]; info = kmalloc(sizeof(*info), GFP_KERNEL); if (!info) panic("smp_detect_cpus failed to allocate memory\n"); @@ -453,7 +446,7 @@ int __cpuinit start_secondary(void *cpuvoid) /* Switch on interrupts */ local_irq_enable(); /* Print info about this processor */ - print_cpu_info(&S390_lowcore.cpu_data); + print_cpu_info(); /* cpu_idle will call schedule for us */ cpu_idle(); return 0; @@ -515,7 +508,6 @@ out: return -ENOMEM; } -#ifdef CONFIG_HOTPLUG_CPU static void smp_free_lowcore(int cpu) { struct _lowcore *lowcore; @@ -534,7 +526,6 @@ static void smp_free_lowcore(int cpu) free_pages((unsigned long) lowcore, lc_order); lowcore_ptr[cpu] = NULL; } -#endif /* CONFIG_HOTPLUG_CPU */ /* Upping and downing of CPUs */ int __cpuinit __cpu_up(unsigned int cpu) @@ -543,16 +534,23 @@ int __cpuinit __cpu_up(unsigned int cpu) struct _lowcore *cpu_lowcore; struct stack_frame *sf; sigp_ccode ccode; + u32 lowcore; if (smp_cpu_state[cpu] != CPU_STATE_CONFIGURED) return -EIO; if (smp_alloc_lowcore(cpu)) return -ENOMEM; - - ccode = signal_processor_p((__u32)(unsigned long)(lowcore_ptr[cpu]), - cpu, sigp_set_prefix); - if (ccode) - return -EIO; + do { + ccode = signal_processor(cpu, sigp_initial_cpu_reset); + if (ccode == sigp_busy) + udelay(10); + if (ccode == sigp_not_operational) + goto err_out; + } while (ccode == sigp_busy); + + lowcore = (u32)(unsigned long)lowcore_ptr[cpu]; + while (signal_processor_p(lowcore, cpu, sigp_set_prefix) == sigp_busy) + udelay(10); idle = current_set[cpu]; cpu_lowcore = lowcore_ptr[cpu]; @@ -571,9 +569,8 @@ int __cpuinit __cpu_up(unsigned int cpu) : : "a" (&cpu_lowcore->access_regs_save_area) : "memory"); cpu_lowcore->percpu_offset = __per_cpu_offset[cpu]; cpu_lowcore->current_task = (unsigned long) idle; - cpu_lowcore->cpu_data.cpu_nr = cpu; + cpu_lowcore->cpu_nr = cpu; cpu_lowcore->kernel_asce = S390_lowcore.kernel_asce; - cpu_lowcore->ipl_device = S390_lowcore.ipl_device; eieio(); while (signal_processor(cpu, sigp_restart) == sigp_busy) @@ -582,6 +579,10 @@ int __cpuinit __cpu_up(unsigned int cpu) while (!cpu_online(cpu)) cpu_relax(); return 0; + +err_out: + smp_free_lowcore(cpu); + return -EIO; } static int __init setup_possible_cpus(char *s) @@ -589,9 +590,8 @@ static int __init setup_possible_cpus(char *s) int pcpus, cpu; pcpus = simple_strtoul(s, NULL, 0); - cpu_possible_map = cpumask_of_cpu(0); - for (cpu = 1; cpu < pcpus && cpu < NR_CPUS; cpu++) - cpu_set(cpu, cpu_possible_map); + for (cpu = 0; cpu < pcpus && cpu < nr_cpu_ids; cpu++) + set_cpu_possible(cpu, true); return 0; } early_param("possible_cpus", setup_possible_cpus); @@ -663,7 +663,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus) /* request the 0x1201 emergency signal external interrupt */ if (register_external_interrupt(0x1201, do_ext_call_interrupt) != 0) panic("Couldn't request external interrupt 0x1201"); - print_cpu_info(&S390_lowcore.cpu_data); + print_cpu_info(); /* Reallocate current lowcore, but keep its contents. */ 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 @@ +/* + * Copyright IBM Corp. 2001, 2009 + * Author(s): Ulrich Weigand <Ulrich.Weigand@de.ibm.com>, + * Martin Schwidefsky <schwidefsky@de.ibm.com>, + */ + +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/proc_fs.h> +#include <linux/seq_file.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <asm/ebcdic.h> +#include <asm/sysinfo.h> +#include <asm/cpcmd.h> + +/* Sigh, math-emu. Don't ask. */ +#include <asm/sfp-util.h> +#include <math-emu/soft-fp.h> +#include <math-emu/single.h> + +static inline int stsi_0(void) +{ + int rc = stsi(NULL, 0, 0, 0); + return rc == -ENOSYS ? rc : (((unsigned int) rc) >> 28); +} + +static int stsi_1_1_1(struct sysinfo_1_1_1 *info, char *page, int len) +{ + if (stsi(info, 1, 1, 1) == -ENOSYS) + return len; + + EBCASC(info->manufacturer, sizeof(info->manufacturer)); + EBCASC(info->type, sizeof(info->type)); + EBCASC(info->model, sizeof(info->model)); + EBCASC(info->sequence, sizeof(info->sequence)); + EBCASC(info->plant, sizeof(info->plant)); + EBCASC(info->model_capacity, sizeof(info->model_capacity)); + EBCASC(info->model_perm_cap, sizeof(info->model_perm_cap)); + EBCASC(info->model_temp_cap, sizeof(info->model_temp_cap)); + len += sprintf(page + len, "Manufacturer: %-16.16s\n", + info->manufacturer); + len += sprintf(page + len, "Type: %-4.4s\n", + info->type); + if (info->model[0] != '\0') + /* + * Sigh: the model field has been renamed with System z9 + * to model_capacity and a new model field has been added + * after the plant field. To avoid confusing older programs + * the "Model:" prints "model_capacity model" or just + * "model_capacity" if the model string is empty . + */ + len += sprintf(page + len, + "Model: %-16.16s %-16.16s\n", + info->model_capacity, info->model); + else + len += sprintf(page + len, "Model: %-16.16s\n", + info->model_capacity); + len += sprintf(page + len, "Sequence Code: %-16.16s\n", + info->sequence); + len += sprintf(page + len, "Plant: %-4.4s\n", + info->plant); + len += sprintf(page + len, "Model Capacity: %-16.16s %08u\n", + info->model_capacity, *(u32 *) info->model_cap_rating); + if (info->model_perm_cap[0] != '\0') + len += sprintf(page + len, + "Model Perm. Capacity: %-16.16s %08u\n", + info->model_perm_cap, + *(u32 *) info->model_perm_cap_rating); + if (info->model_temp_cap[0] != '\0') + len += sprintf(page + len, + "Model Temp. Capacity: %-16.16s %08u\n", + info->model_temp_cap, + *(u32 *) info->model_temp_cap_rating); + return len; +} + +static int stsi_1_2_2(struct sysinfo_1_2_2 *info, char *page, int len) +{ + struct sysinfo_1_2_2_extension *ext; + int i; + + if (stsi(info, 1, 2, 2) == -ENOSYS) + return len; + ext = (struct sysinfo_1_2_2_extension *) + ((unsigned long) info + info->acc_offset); + + len += sprintf(page + len, "\n"); + len += sprintf(page + len, "CPUs Total: %d\n", + info->cpus_total); + len += sprintf(page + len, "CPUs Configured: %d\n", + info->cpus_configured); + len += sprintf(page + len, "CPUs Standby: %d\n", + info->cpus_standby); + len += sprintf(page + len, "CPUs Reserved: %d\n", + info->cpus_reserved); + + if (info->format == 1) { + /* + * Sigh 2. According to the specification the alternate + * capability field is a 32 bit floating point number + * if the higher order 8 bits are not zero. Printing + * a floating point number in the kernel is a no-no, + * always print the number as 32 bit unsigned integer. + * The user-space needs to know about the strange + * encoding of the alternate cpu capability. + */ + len += sprintf(page + len, "Capability: %u %u\n", + info->capability, ext->alt_capability); + for (i = 2; i <= info->cpus_total; i++) + len += sprintf(page + len, + "Adjustment %02d-way: %u %u\n", + i, info->adjustment[i-2], + ext->alt_adjustment[i-2]); + + } else { + len += sprintf(page + len, "Capability: %u\n", + info->capability); + for (i = 2; i <= info->cpus_total; i++) + len += sprintf(page + len, + "Adjustment %02d-way: %u\n", + i, info->adjustment[i-2]); + } + + if (info->secondary_capability != 0) + len += sprintf(page + len, "Secondary Capability: %d\n", + info->secondary_capability); + return len; +} + +static int stsi_2_2_2(struct sysinfo_2_2_2 *info, char *page, int len) +{ + if (stsi(info, 2, 2, 2) == -ENOSYS) + return len; + + EBCASC(info->name, sizeof(info->name)); + + len += sprintf(page + len, "\n"); + len += sprintf(page + len, "LPAR Number: %d\n", + info->lpar_number); + + len += sprintf(page + len, "LPAR Characteristics: "); + if (info->characteristics & LPAR_CHAR_DEDICATED) + len += sprintf(page + len, "Dedicated "); + if (info->characteristics & LPAR_CHAR_SHARED) + len += sprintf(page + len, "Shared "); + if (info->characteristics & LPAR_CHAR_LIMITED) + len += sprintf(page + len, "Limited "); + len += sprintf(page + len, "\n"); + + len += sprintf(page + len, "LPAR Name: %-8.8s\n", + info->name); + + len += sprintf(page + len, "LPAR Adjustment: %d\n", + info->caf); + + len += sprintf(page + len, "LPAR CPUs Total: %d\n", + info->cpus_total); + len += sprintf(page + len, "LPAR CPUs Configured: %d\n", + info->cpus_configured); + len += sprintf(page + len, "LPAR CPUs Standby: %d\n", + info->cpus_standby); + len += sprintf(page + len, "LPAR CPUs Reserved: %d\n", + info->cpus_reserved); + len += sprintf(page + len, "LPAR CPUs Dedicated: %d\n", + info->cpus_dedicated); + len += sprintf(page + len, "LPAR CPUs Shared: %d\n", + info->cpus_shared); + return len; +} + +static int stsi_3_2_2(struct sysinfo_3_2_2 *info, char *page, int len) +{ + int i; + + if (stsi(info, 3, 2, 2) == -ENOSYS) + return len; + for (i = 0; i < info->count; i++) { + EBCASC(info->vm[i].name, sizeof(info->vm[i].name)); + EBCASC(info->vm[i].cpi, sizeof(info->vm[i].cpi)); + len += sprintf(page + len, "\n"); + len += sprintf(page + len, "VM%02d Name: %-8.8s\n", + i, info->vm[i].name); + len += sprintf(page + len, "VM%02d Control Program: %-16.16s\n", + i, info->vm[i].cpi); + + len += sprintf(page + len, "VM%02d Adjustment: %d\n", + i, info->vm[i].caf); + + len += sprintf(page + len, "VM%02d CPUs Total: %d\n", + i, info->vm[i].cpus_total); + len += sprintf(page + len, "VM%02d CPUs Configured: %d\n", + i, info->vm[i].cpus_configured); + len += sprintf(page + len, "VM%02d CPUs Standby: %d\n", + i, info->vm[i].cpus_standby); + len += sprintf(page + len, "VM%02d CPUs Reserved: %d\n", + i, info->vm[i].cpus_reserved); + } + return len; +} + +static int proc_read_sysinfo(char *page, char **start, + off_t off, int count, + int *eof, void *data) +{ + unsigned long info = get_zeroed_page(GFP_KERNEL); + int level, len; + + if (!info) + return 0; + + len = 0; + level = stsi_0(); + if (level >= 1) + len = stsi_1_1_1((struct sysinfo_1_1_1 *) info, page, len); + + if (level >= 1) + len = stsi_1_2_2((struct sysinfo_1_2_2 *) info, page, len); + + if (level >= 2) + len = stsi_2_2_2((struct sysinfo_2_2_2 *) info, page, len); + + if (level >= 3) + len = stsi_3_2_2((struct sysinfo_3_2_2 *) info, page, len); + + free_page(info); + return len; +} + +static __init int create_proc_sysinfo(void) +{ + create_proc_read_entry("sysinfo", 0444, NULL, + proc_read_sysinfo, NULL); + return 0; +} +device_initcall(create_proc_sysinfo); + +/* + * Service levels interface. + */ + +static DECLARE_RWSEM(service_level_sem); +static LIST_HEAD(service_level_list); + +int register_service_level(struct service_level *slr) +{ + struct service_level *ptr; + + down_write(&service_level_sem); + list_for_each_entry(ptr, &service_level_list, list) + if (ptr == slr) { + up_write(&service_level_sem); + return -EEXIST; + } + list_add_tail(&slr->list, &service_level_list); + up_write(&service_level_sem); + return 0; +} +EXPORT_SYMBOL(register_service_level); + +int unregister_service_level(struct service_level *slr) +{ + struct service_level *ptr, *next; + int rc = -ENOENT; + + down_write(&service_level_sem); + list_for_each_entry_safe(ptr, next, &service_level_list, list) { + if (ptr != slr) + continue; + list_del(&ptr->list); + rc = 0; + break; + } + up_write(&service_level_sem); + return rc; +} +EXPORT_SYMBOL(unregister_service_level); + +static void *service_level_start(struct seq_file *m, loff_t *pos) +{ + down_read(&service_level_sem); + return seq_list_start(&service_level_list, *pos); +} + +static void *service_level_next(struct seq_file *m, void *p, loff_t *pos) +{ + return seq_list_next(p, &service_level_list, pos); +} + +static void service_level_stop(struct seq_file *m, void *p) +{ + up_read(&service_level_sem); +} + +static int service_level_show(struct seq_file *m, void *p) +{ + struct service_level *slr; + + slr = list_entry(p, struct service_level, list); + slr->seq_print(m, slr); + return 0; +} + +static const struct seq_operations service_level_seq_ops = { + .start = service_level_start, + .next = service_level_next, + .stop = service_level_stop, + .show = service_level_show +}; + +static int service_level_open(struct inode *inode, struct file *file) +{ + return seq_open(file, &service_level_seq_ops); +} + +static const struct file_operations service_level_ops = { + .open = service_level_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release +}; + +static void service_level_vm_print(struct seq_file *m, + struct service_level *slr) +{ + char *query_buffer, *str; + + query_buffer = kmalloc(1024, GFP_KERNEL | GFP_DMA); + if (!query_buffer) + return; + cpcmd("QUERY CPLEVEL", query_buffer, 1024, NULL); + str = strchr(query_buffer, '\n'); + if (str) + *str = 0; + seq_printf(m, "VM: %s\n", query_buffer); + kfree(query_buffer); +} + +static struct service_level service_level_vm = { + .seq_print = service_level_vm_print +}; + +static __init int create_proc_service_level(void) +{ + proc_create("service_levels", 0, NULL, &service_level_ops); + if (MACHINE_IS_VM) + register_service_level(&service_level_vm); + return 0; +} +subsys_initcall(create_proc_service_level); + +/* + * Bogomips calculation based on cpu capability. + */ +int get_cpu_capability(unsigned int *capability) +{ + struct sysinfo_1_2_2 *info; + int rc; + + info = (void *) get_zeroed_page(GFP_KERNEL); + if (!info) + return -ENOMEM; + rc = stsi(info, 1, 2, 2); + if (rc == -ENOSYS) + goto out; + rc = 0; + *capability = info->capability; +out: + free_page((unsigned long) info); + return rc; +} + +/* + * CPU capability might have changed. Therefore recalculate loops_per_jiffy. + */ +void s390_adjust_jiffies(void) +{ + struct sysinfo_1_2_2 *info; + const unsigned int fmil = 0x4b189680; /* 1e7 as 32-bit float. */ + FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR); + FP_DECL_EX; + unsigned int capability; + + info = (void *) get_zeroed_page(GFP_KERNEL); + if (!info) + return; + + if (stsi(info, 1, 2, 2) != -ENOSYS) { + /* + * Major sigh. The cpu capability encoding is "special". + * If the first 9 bits of info->capability are 0 then it + * is a 32 bit unsigned integer in the range 0 .. 2^23. + * If the first 9 bits are != 0 then it is a 32 bit float. + * In addition a lower value indicates a proportionally + * higher cpu capacity. Bogomips are the other way round. + * To get to a halfway suitable number we divide 1e7 + * by the cpu capability number. Yes, that means a floating + * point division .. math-emu here we come :-) + */ + FP_UNPACK_SP(SA, &fmil); + if ((info->capability >> 23) == 0) + FP_FROM_INT_S(SB, info->capability, 32, int); + else + FP_UNPACK_SP(SB, &info->capability); + FP_DIV_S(SR, SA, SB); + FP_TO_INT_S(capability, SR, 32, 0); + } else + /* + * Really old machine without stsi block for basic + * cpu information. Report 42.0 bogomips. + */ + capability = 42; + loops_per_jiffy = capability * (500000/HZ); + free_page((unsigned long) info); +} + +/* + * calibrate the delay loop + */ +void __cpuinit calibrate_delay(void) +{ + s390_adjust_jiffies(); + /* Print the good old Bogomips line .. */ + printk(KERN_DEBUG "Calibrating delay loop (skipped)... " + "%lu.%02lu BogoMIPS preset\n", loops_per_jiffy/(500000/HZ), + (loops_per_jiffy/(5000/HZ)) % 100); +} 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, } static DEFINE_PER_CPU(atomic_t, clock_sync_word); +static DEFINE_MUTEX(clock_sync_mutex); static unsigned long clock_sync_flags; #define CLOCK_SYNC_HAS_ETR 0 @@ -394,6 +395,20 @@ static void enable_sync_clock(void) atomic_set_mask(0x80000000, sw_ptr); } +/* + * Function to check if the clock is in sync. + */ +static inline int check_sync_clock(void) +{ + atomic_t *sw_ptr; + int rc; + + sw_ptr = &get_cpu_var(clock_sync_word); + rc = (atomic_read(sw_ptr) & 0x80000000U) != 0; + put_cpu_var(clock_sync_sync); + return rc; +} + /* Single threaded workqueue used for etr and stp sync events */ static struct workqueue_struct *time_sync_wq; @@ -485,6 +500,8 @@ static void etr_reset(void) if (etr_setr(&etr_eacr) == 0) { etr_tolec = get_clock(); set_bit(CLOCK_SYNC_HAS_ETR, &clock_sync_flags); + if (etr_port0_online && etr_port1_online) + set_bit(CLOCK_SYNC_ETR, &clock_sync_flags); } else if (etr_port0_online || etr_port1_online) { pr_warning("The real or virtual hardware system does " "not provide an ETR interface\n"); @@ -533,8 +550,7 @@ void etr_switch_to_local(void) { if (!etr_eacr.sl) return; - if (test_bit(CLOCK_SYNC_ETR, &clock_sync_flags)) - disable_sync_clock(NULL); + disable_sync_clock(NULL); set_bit(ETR_EVENT_SWITCH_LOCAL, &etr_events); queue_work(time_sync_wq, &etr_work); } @@ -549,8 +565,7 @@ void etr_sync_check(void) { if (!etr_eacr.es) return; - if (test_bit(CLOCK_SYNC_ETR, &clock_sync_flags)) - disable_sync_clock(NULL); + disable_sync_clock(NULL); set_bit(ETR_EVENT_SYNC_CHECK, &etr_events); queue_work(time_sync_wq, &etr_work); } @@ -914,7 +929,7 @@ static struct etr_eacr etr_handle_update(struct etr_aib *aib, * Do not try to get the alternate port aib if the clock * is not in sync yet. */ - if (!test_bit(CLOCK_SYNC_STP, &clock_sync_flags) && !eacr.es) + if (!check_sync_clock()) return eacr; /* @@ -997,7 +1012,6 @@ static void etr_work_fn(struct work_struct *work) on_each_cpu(disable_sync_clock, NULL, 1); del_timer_sync(&etr_timer); etr_update_eacr(eacr); - clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags); goto out_unlock; } @@ -1071,18 +1085,13 @@ static void etr_work_fn(struct work_struct *work) /* Both ports not usable. */ eacr.es = eacr.sl = 0; sync_port = -1; - clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags); } - if (!test_bit(CLOCK_SYNC_ETR, &clock_sync_flags)) - eacr.es = 0; - /* * If the clock is in sync just update the eacr and return. * If there is no valid sync port wait for a port update. */ - if (test_bit(CLOCK_SYNC_STP, &clock_sync_flags) || - eacr.es || sync_port < 0) { + if (check_sync_clock() || sync_port < 0) { etr_update_eacr(eacr); etr_set_tolec_timeout(now); goto out_unlock; @@ -1103,13 +1112,11 @@ static void etr_work_fn(struct work_struct *work) * and set up a timer to try again after 0.5 seconds */ etr_update_eacr(eacr); - set_bit(CLOCK_SYNC_ETR, &clock_sync_flags); if (now < etr_tolec + (1600000 << 12) || etr_sync_clock_stop(&aib, sync_port) != 0) { /* Sync failed. Try again in 1/2 second. */ eacr.es = 0; etr_update_eacr(eacr); - clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags); etr_set_sync_timeout(); } else etr_set_tolec_timeout(now); @@ -1191,19 +1198,30 @@ static ssize_t etr_online_store(struct sys_device *dev, return -EINVAL; if (!test_bit(CLOCK_SYNC_HAS_ETR, &clock_sync_flags)) return -EOPNOTSUPP; + mutex_lock(&clock_sync_mutex); if (dev == &etr_port0_dev) { if (etr_port0_online == value) - return count; /* Nothing to do. */ + goto out; /* Nothing to do. */ etr_port0_online = value; + if (etr_port0_online && etr_port1_online) + set_bit(CLOCK_SYNC_ETR, &clock_sync_flags); + else + clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags); set_bit(ETR_EVENT_PORT0_CHANGE, &etr_events); queue_work(time_sync_wq, &etr_work); } else { if (etr_port1_online == value) - return count; /* Nothing to do. */ + goto out; /* Nothing to do. */ etr_port1_online = value; + if (etr_port0_online && etr_port1_online) + set_bit(CLOCK_SYNC_ETR, &clock_sync_flags); + else + clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags); set_bit(ETR_EVENT_PORT1_CHANGE, &etr_events); queue_work(time_sync_wq, &etr_work); } +out: + mutex_unlock(&clock_sync_mutex); return count; } @@ -1471,8 +1489,6 @@ static void stp_timing_alert(struct stp_irq_parm *intparm) */ void stp_sync_check(void) { - if (!test_bit(CLOCK_SYNC_STP, &clock_sync_flags)) - return; disable_sync_clock(NULL); queue_work(time_sync_wq, &stp_work); } @@ -1485,8 +1501,6 @@ void stp_sync_check(void) */ void stp_island_check(void) { - if (!test_bit(CLOCK_SYNC_STP, &clock_sync_flags)) - return; disable_sync_clock(NULL); queue_work(time_sync_wq, &stp_work); } @@ -1513,10 +1527,6 @@ static int stp_sync_clock(void *data) enable_sync_clock(); - set_bit(CLOCK_SYNC_STP, &clock_sync_flags); - if (test_and_clear_bit(CLOCK_SYNC_ETR, &clock_sync_flags)) - queue_work(time_sync_wq, &etr_work); - rc = 0; if (stp_info.todoff[0] || stp_info.todoff[1] || stp_info.todoff[2] || stp_info.todoff[3] || @@ -1535,9 +1545,6 @@ static int stp_sync_clock(void *data) if (rc) { disable_sync_clock(NULL); stp_sync->in_sync = -EAGAIN; - clear_bit(CLOCK_SYNC_STP, &clock_sync_flags); - if (etr_port0_online || etr_port1_online) - queue_work(time_sync_wq, &etr_work); } else stp_sync->in_sync = 1; xchg(&first, 0); @@ -1569,6 +1576,10 @@ static void stp_work_fn(struct work_struct *work) if (rc || stp_info.c == 0) goto out_unlock; + /* Skip synchronization if the clock is already in sync. */ + if (check_sync_clock()) + goto out_unlock; + memset(&stp_sync, 0, sizeof(stp_sync)); get_online_cpus(); atomic_set(&stp_sync.cpus, num_online_cpus() - 1); @@ -1684,8 +1695,14 @@ static ssize_t stp_online_store(struct sysdev_class *class, return -EINVAL; if (!test_bit(CLOCK_SYNC_HAS_STP, &clock_sync_flags)) return -EOPNOTSUPP; + mutex_lock(&clock_sync_mutex); stp_online = value; + if (stp_online) + set_bit(CLOCK_SYNC_STP, &clock_sync_flags); + else + clear_bit(CLOCK_SYNC_STP, &clock_sync_flags); queue_work(time_sync_wq, &stp_work); + mutex_unlock(&clock_sync_mutex); return count; } 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); cpumask_t cpu_core_map[NR_CPUS]; -cpumask_t cpu_coregroup_map(unsigned int cpu) +static cpumask_t cpu_coregroup_map(unsigned int cpu) { struct core_info *core = &core_info; 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; #define stack_pointer ({ void **sp; asm("la %0,0(15)" : "=&d" (sp)); sp; }) #ifndef CONFIG_64BIT +#define LONG "%08lx " #define FOURLONG "%08lx %08lx %08lx %08lx\n" static int kstack_depth_to_print = 12; #else /* CONFIG_64BIT */ +#define LONG "%016lx " #define FOURLONG "%016lx %016lx %016lx %016lx\n" static int kstack_depth_to_print = 20; #endif /* CONFIG_64BIT */ @@ -155,7 +157,7 @@ void show_stack(struct task_struct *task, unsigned long *sp) break; if (i && ((i * sizeof (long) % 32) == 0)) printk("\n "); - printk("%p ", (void *)*stack++); + printk(LONG, *stack++); } printk("\n"); 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: return -ENOMEM; } -#ifdef CONFIG_HOTPLUG_CPU void vdso_free_per_cpu(int cpu, struct _lowcore *lowcore) { unsigned long segment_table, page_table, page_frame; @@ -163,7 +162,6 @@ void vdso_free_per_cpu(int cpu, struct _lowcore *lowcore) free_page(page_table); free_pages(segment_table, SEGMENT_ORDER); } -#endif /* CONFIG_HOTPLUG_CPU */ static void __vdso_init_cr5(void *dummy) { 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 EXIT_TEXT } + /* early.c uses stsi, which requires page aligned data. */ + . = ALIGN(PAGE_SIZE); .init.data : { INIT_DATA } 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 @@ #include <linux/timer.h> #include <asm/lowcore.h> #include <asm/pgtable.h> - +#include <asm/nmi.h> #include "kvm-s390.h" #include "gaccess.h" @@ -286,7 +286,7 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) setup_timer(&vcpu->arch.ckc_timer, kvm_s390_idle_wakeup, (unsigned long) vcpu); get_cpu_id(&vcpu->arch.cpu_id); - vcpu->arch.cpu_id.version = 0xfe; + vcpu->arch.cpu_id.version = 0xff; return 0; } @@ -440,8 +440,6 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, return -EINVAL; /* not implemented yet */ } -extern void s390_handle_mcck(void); - static void __vcpu_run(struct kvm_vcpu *vcpu) { 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 @@ #include <linux/sched.h> #include <linux/delay.h> #include <linux/timex.h> +#include <linux/module.h> #include <linux/irqflags.h> #include <linux/interrupt.h> @@ -92,6 +93,7 @@ out: local_irq_restore(flags); preempt_enable(); } +EXPORT_SYMBOL(__udelay); /* * 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) */ size_t strlen(const char *s) { +#if __GNUC__ < 4 return __strend(s) - s; +#else + return __builtin_strlen(s); +#endif } EXPORT_SYMBOL(strlen); @@ -70,6 +74,7 @@ EXPORT_SYMBOL(strnlen); */ char *strcpy(char *dest, const char *src) { +#if __GNUC__ < 4 register int r0 asm("0") = 0; char *ret = dest; @@ -78,6 +83,9 @@ char *strcpy(char *dest, const char *src) : "+&a" (dest), "+&a" (src) : "d" (r0) : "cc", "memory" ); return ret; +#else + return __builtin_strcpy(dest, src); +#endif } EXPORT_SYMBOL(strcpy); 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) do_no_context(regs, error_code, 0); } -/* - * We ran out of memory, or some other thing happened to us that made - * us unable to handle the page fault gracefully. - */ -static int do_out_of_memory(struct pt_regs *regs, unsigned long error_code, - unsigned long address) -{ - struct task_struct *tsk = current; - struct mm_struct *mm = tsk->mm; - - up_read(&mm->mmap_sem); - if (is_global_init(tsk)) { - yield(); - down_read(&mm->mmap_sem); - return 1; - } - printk("VM: killing process %s\n", tsk->comm); - if (regs->psw.mask & PSW_MASK_PSTATE) - do_group_exit(SIGKILL); - do_no_context(regs, error_code, address); - return 0; -} - static void do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address) { @@ -367,7 +344,6 @@ good_area: goto bad_area; } -survive: if (is_vm_hugetlb_page(vma)) address &= HPAGE_MASK; /* @@ -378,8 +354,8 @@ survive: fault = handle_mm_fault(mm, vma, address, write); if (unlikely(fault & VM_FAULT_ERROR)) { if (fault & VM_FAULT_OOM) { - if (do_out_of_memory(regs, error_code, address)) - goto survive; + up_read(&mm->mmap_sem); + pagefault_out_of_memory(); return; } else if (fault & VM_FAULT_SIGBUS) { 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 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__((__aligned__(PAGE_SIZE))); + char empty_zero_page[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE))); +EXPORT_SYMBOL(empty_zero_page); /* * 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) struct task_struct *tsk = current; struct mm_struct *mm, *old_mm; + /* Do we have switched amode? If no, we cannot do sie */ + if (!switch_amode) + return -EINVAL; + /* Do we have pgstes? if yes, we are done */ if (tsk->mm->context.has_pgste) return 0; @@ -292,7 +296,7 @@ int s390_enable_sie(void) tsk->mm = tsk->active_mm = mm; preempt_disable(); update_mm(mm, tsk); - cpu_set(smp_processor_id(), mm->cpu_vm_mask); + cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm)); preempt_enable(); task_unlock(tsk); mmput(old_mm); |