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67b5c3eeb4
linux/arch/s390/kernel
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Heiko Carstens 67b5c3eeb4 s390/kdump,bootmem: fix bootmem allocator bitmap size 
When in kdump mode the kernel may access only the first couple of
megabytes for execution, the rest contains the dump. However
the size of the bitmap used by the bootmem allocator was calculated
for the whole amount of memory of the machine.

For very large machines this can lead to the situation that the kdump
kernel will not come up because not enough memory is available.

So fix this and calculate the size of the bitmap only for the piece
of memory that the kdump kernel actually uses.

Call reserve_oldmem() before setup_memory_end() so that the memory_chunk
array already has been updated with respect to oldmem chunks.
Afterwards setup_memory_end() will ignore those chunks.

Reviewed-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-05-02 15:50:25 +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: system call path micro optimization 2013-04-26 09:07:05 +02:00
audit.c
audit.h
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: fix data/instruction cache output 2012-10-18 17:50:11 +02:00
compat_audit.c
compat_exec_domain.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
compat_linux.c merge compat sys_ipc instances 2013-03-03 23:00:27 -05:00
compat_linux.h merge compat sys_ipc instances 2013-03-03 23:00:27 -05:00
compat_ptrace.h [S390] ptrace cleanup 2011-01-05 12:47:31 +01:00
compat_signal.c s390/signal: Add BEA to compat signal handler parameters 2013-04-17 14:07:35 +02:00
compat_wrapper.S Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
cpcmd.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
crash_dump.c s390/crashdump: move fill_cpu_elf_notes() prototype to header file 2012-09-26 15:45:22 +02:00
debug.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
diag.c [S390] replace diag10() with diag10_range() function 2011-05-10 17:13:43 +02:00
dis.c s390/dis: use explicit buf len 2013-04-17 14:07:25 +02:00
dumpstack.c dump_stack: unify debug information printed by show_regs() 2013-04-30 17:04:02 -07:00
early.c s390/cleanup: rename SPP to LPP 2013-02-14 15:55:24 +01:00
ebcdic.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
entry64.S s390: system call path micro optimization 2013-04-26 09:07:05 +02:00
entry.h s390/hibernate: Save and restore absolute zero pages 2013-04-17 14:07:30 +02:00
entry.S s390: system call path micro optimization 2013-04-26 09:07:05 +02:00
ftrace.c [S390] cleanup ftrace backend functions 2011-01-05 12:47:31 +01:00
head31.S s390/mm: let kernel text section always begin at 1MB 2012-10-09 14:16:59 +02:00
head64.S s390/mm: let kernel text section always begin at 1MB 2012-10-09 14:16:59 +02:00
head_kdump.S s390/kdump: Use 64 bit mode for 0x10000 entry point 2012-10-18 17:50:09 +02:00
head.S s390: add zEC12 code generation support 2012-11-23 11:14:31 +01:00
ipl.c s390/ipl: Implement diag308 loop for zfcpdump 2013-02-14 15:55:05 +01:00
irq.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
jump_label.c s390/jump-label: add arch_jump_label_transform_static() 2011-10-25 11:54:37 -07:00
kprobes.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
lgr.c s390/sysinfo,stsi: change return code handling 2012-09-26 15:45:12 +02:00
machine_kexec.c s390/kdump: Add PM notifier for kdump 2013-04-15 13:34:44 +02:00
Makefile s390/mem_detect: move memory detection code to mm folder 2013-05-02 15:50:22 +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
module.c s390/module: fix compile warning 2013-02-28 09:37:13 +01:00
nmi.c s390/time: rename tod clock access functions 2013-02-14 15:55:10 +01:00
os_info.c Include missing linux/slab.h inclusions 2013-04-29 15:42:01 -04:00
perf_cpum_cf.c s390/perf: cpum_cf: fallback to software sampling events 2013-02-14 15:55:15 +01:00
perf_event.c [S390] Fix build errors (fallout from system.h disintegration) 2012-03-30 09:41:12 +02:00
pgm_check.S s390/traps: preinitialize program check table 2012-11-23 11:14:25 +01:00
process.c s390: Use generic idle loop 2013-04-08 17:39:27 +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/ptrace: add missing ifdef 2012-09-26 15:45:21 +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/irq: remove split irq fields from /proc/stat 2013-01-08 10:57:07 +01:00
s390_ksyms.c s390/string: provide asm lib functions for memcpy and memcmp 2012-09-26 15:44:50 +02:00
sclp.S s390/sclp: fix addressing mode clobber 2012-11-06 22:39:51 +01:00
setup.c s390/kdump,bootmem: fix bootmem allocator bitmap size 2013-05-02 15:50:25 +02:00
signal.c s390/uaccess: remove pointless access_ok() checks 2013-02-28 09:37:09 +01:00
smp.c Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-04-30 07:50:17 -07:00
stacktrace.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
suspend.c s390/hibernate: Save and restore absolute zero pages 2013-04-17 14:07:30 +02:00
swsusp_asm64.S s390/hibernate: Save and restore absolute zero pages 2013-04-17 14:07:30 +02:00
sys_s390.c teach SYSCALL_DEFINE<n> how to deal with long long/unsigned long long 2013-03-03 22:46:22 -05:00
syscalls.S Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
sysinfo.c s390/sysinfo,stsi: change return code handling 2012-09-26 15:45:12 +02:00
time.c s390/time: rename tod clock access functions 2013-02-14 15:55:10 +01:00
topology.c s390/topology: export cpu_topology 2013-01-08 10:57:10 +01:00
traps.c s390/dumpstack: fix call chain walking 2013-04-17 14:07:28 +02:00
vdso.c s390/mm: rename addressing_mode to s390_user_mode 2012-09-26 15:45:05 +02:00
vmlinux.lds.S s390/linker skript: discard exit.data at runtime 2013-02-14 15:55:21 +01:00
vtime.c s390: Use generic idle loop 2013-04-08 17:39:27 +02:00