Heiko Carstens c5e3acd666 s390/smp: avoid concurrent write to sigp status field ...

When a sigp instruction is issued it may store a status. This status is
currently stored in a per cpu field of the target cpu.
If multiple cpus issue a sigp instruction with the same target cpu
and a status is stored the result is not necessarily as expected.

Currently this is not an issue:
- on cpu hotplug no sigps, except "restart" and "sense" are sent to the
  target cpu.
- on external call we don't look at the status if it is stored
- on sense running the condition code "status stored" is sufficient to
  tell if a cpu is running or not

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2012-09-26 15:45:04 +02:00

..

vdso32

s390: add various .gitignore files.

2012-05-16 14:42:41 +02:00

vdso64

s390: add various .gitignore files.

2012-05-16 14:42:41 +02:00

.gitignore

s390: add various .gitignore files.

2012-05-16 14:42:41 +02:00

asm-offsets.c

s390: add support for transactional memory

2012-09-26 15:45:02 +02:00

audit.c

[S390] Get rid of a bunch of sparse warnings again.

2007-10-12 16:13:06 +02:00

audit.h

[S390] Get rid of a bunch of sparse warnings again.

2007-10-12 16:13:06 +02:00

base.S

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

bitmap.c

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

cache.c

s390/cache: add cpu cache information to /proc/cpuinfo

2012-09-26 15:45:03 +02:00

compat_audit.c

[S390] Get rid of a bunch of sparse warnings again.

2007-10-12 16:13:06 +02:00

compat_exec_domain.c

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

compat_linux.c

s390/compat: fix mmap compat system calls

2012-08-08 07:32:57 -07:00

compat_linux.h

Mark arguments to certain syscalls as being const

2010-08-13 16:53:13 -07:00

compat_ptrace.h

[S390] ptrace cleanup

2011-01-05 12:47:31 +01:00

compat_signal.c

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

compat_wrapper.S

s390: add support for runtime instrumentation

2012-09-26 15:45:02 +02:00

cpcmd.c

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

crash_dump.c

[S390] kernel: Add OS info memory interface

2012-03-11 11:59:29 -04:00

debug.c

s390/debug: remove module_exit function / move EXPORT_SYMBOLs

2012-07-26 10:07:25 +02:00

diag.c

[S390] replace diag10() with diag10_range() function

2011-05-10 17:13:43 +02:00

dis.c

s390: add support for transactional memory

2012-09-26 15:45:02 +02:00

early.c

s390: add support for transactional memory

2012-09-26 15:45:02 +02:00

ebcdic.c

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

entry64.S

s390: add support for transactional memory

2012-09-26 15:45:02 +02:00

entry.h

s390/vtimer: rework virtual timer interface

2012-07-20 11:15:08 +02:00

entry.S

s390/vtimer: rework virtual timer interface

2012-07-20 11:15:08 +02:00

ftrace.c

[S390] cleanup ftrace backend functions

2011-01-05 12:47:31 +01:00

head31.S

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

head64.S

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

head_kdump.S

s390/sigp: use sigp order code defines in assembly code

2012-06-05 13:23:36 +02:00

head.S

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

ipl.c

s390/ipl: Use diagnose 8 command separation

2012-07-26 10:07:26 +02:00

irq.c

s390: add support for runtime instrumentation

2012-09-26 15:45:02 +02:00

jump_label.c

s390/jump-label: add arch_jump_label_transform_static()

2011-10-25 11:54:37 -07:00

kprobes.c

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

lgr.c

s390/lgr: Add init check to lgr_info_log()

2012-07-20 11:15:01 +02:00

machine_kexec.c

s390/kexec: move machine_crash_shutdown() to machine_kexec.c

2012-09-26 15:44:54 +02:00

Makefile

s390: add support for runtime instrumentation

2012-09-26 15:45:02 +02:00

mcount64.S

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

mcount.S

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

mem_detect.c

[S390] Rework create_mem_hole() function

2011-12-27 11:27:09 +01:00

module.c

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

nmi.c

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

os_info.c

s390/smp: make absolute lowcore / cpu restart parameter accesses more robust

2012-06-14 09:09:02 +02:00

perf_cpum_cf.c

s390/irq: split irq stats for cpu-measurement alert facilities

2012-05-23 17:06:52 +02:00

perf_event.c

[S390] Fix build errors (fallout from system.h disintegration)

2012-03-30 09:41:12 +02:00

process.c

s390: add support for runtime instrumentation

2012-09-26 15:45:02 +02:00

processor.c

s390/processor: use ARRAY_SIZE instead of hard coded value

2012-09-26 15:45:03 +02:00

ptrace.c

s390: add support for transactional memory

2012-09-26 15:45:02 +02:00

reipl64.S

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

reipl.S

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

relocate_kernel64.S

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

relocate_kernel.S

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

runtime_instr.c

s390: add support for runtime instrumentation

2012-09-26 15:45:02 +02:00

s390_ksyms.c

s390/string: provide asm lib functions for memcpy and memcmp

2012-09-26 15:44:50 +02:00

sclp.S

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

setup.c

s390: add support for transactional memory

2012-09-26 15:45:02 +02:00

signal.c

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

smp.c

s390/smp: avoid concurrent write to sigp status field

2012-09-26 15:45:04 +02:00

stacktrace.c

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

suspend.c

Disintegrate asm/system.h for S390

2012-03-28 18:30:02 +01:00

swsusp_asm64.S

s390/sigp: use sigp order code defines in assembly code

2012-06-05 13:23:36 +02:00

sys_s390.c

s390: do not clobber personality flags in sys_32_personality()

2012-08-08 07:32:56 -07:00

syscalls.S

s390: add support for runtime instrumentation

2012-09-26 15:45:02 +02:00

sysinfo.c

s390/cpu: remove cpu "capabilities" sysfs attribute

2012-05-30 09:07:30 +02:00

time.c

s390/vtimer: rework virtual timer interface

2012-07-20 11:15:08 +02:00

topology.c

s390/comments: unify copyright messages and remove file names

2012-07-20 11:15:04 +02:00

traps.c

s390: add support for transactional memory

2012-09-26 15:45:02 +02:00

vdso.c

s390/mm: rename user_mode variable to addressing_mode

2012-07-30 11:03:11 +02:00

vmlinux.lds.S

s390/linker script: use RO_DATA_SECTION

2012-07-26 10:07:25 +02:00

vtime.c

s390/cpu hotplug: mask out CPU_TASKS_FROZEN in cu hotplug notifiers

2012-09-26 15:44:53 +02:00