Heiko Carstens 94c163663f s390/memory hotplug: prevent offline of active memory increments ... In case a machine supports memory hotplug all active memory increments present at IPL time have been initialized with a "usecount" of 1. This is wrong if the memory increment size is larger than the memory section size of the memory hotplug code. If that is the case the usecount must be initialized with the number of memory sections that fit into one memory increment. Otherwise it is possible to put a memory increment into standby state even if there are still active sections. Afterwards addressing exceptions might happen which cause the kernel to panic. However even worse, if a memory increment was put into standby state and afterwards into active state again, it's contents would have been zeroed, leading to memory corruption. This was only an issue for machines that support standby memory and have at least 256GB memory. This is broken since commit fdb1bb15 "[S390] sclp/memory hotplug: fix initial usecount of increments". Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: stable@vger.kernel.org # 2.6.39+ Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2013-04-26 09:07:10 +02:00
..
con3215.c	s390/cio: ccw_device_force_console don't use static variable	2013-04-17 14:07:31 +02:00
con3270.c	s390/3270: drop unused spinlock from struct con3270	2012-09-26 15:45:11 +02:00
ctrlchar.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
ctrlchar.h	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
defkeymap.c	Build fix for drivers/s390/char/defkeymap.c	2008-03-04 08:01:26 -08:00
defkeymap.map	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
fs3270.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
Kconfig	tty: Added a CONFIG_TTY option to allow removal of TTY	2013-01-18 16:15:27 -08:00
keyboard.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
keyboard.h	TTY: switch tty_schedule_flip	2013-01-15 22:43:15 -08:00
Makefile	[S390] get CPC image name	2011-05-23 10:24:32 +02:00
monreader.c	s390/monreader: Remove redundant NULL check before kfree	2013-04-17 14:07:25 +02:00
monwriter.c	[S390] monwriter: fix return code handling	2011-05-23 10:24:29 +02:00
raw3270.c	s390/cio: ccw_device_force_console don't use static variable	2013-04-17 14:07:31 +02:00
raw3270.h	s390/3270: asynchronous size sensing	2013-02-14 15:55:03 +01:00
sclp_async.c	[S390] sclp_async: Use kstrtoul_from_user	2011-08-03 16:44:20 +02:00
sclp_cmd.c	s390/memory hotplug: prevent offline of active memory increments	2013-04-26 09:07:10 +02:00
sclp_con.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
sclp_config.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
sclp_cpi_sys.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
sclp_cpi_sys.h	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
sclp_cpi.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
sclp_ocf.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
sclp_quiesce.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
sclp_rw.c	s390/sclp: use -EOPNOTSUPP instead of -ENOSYS	2012-09-26 15:45:13 +02:00
sclp_rw.h	[S390] sclp: fix compile error for !SCLP_CONSOLE	2009-07-07 16:37:50 +02:00
sclp_sdias.c	s390/sclp_sdias: Add missing break and "fall through"	2012-08-08 07:32:55 -07:00
sclp_tty.c	TTY: switch tty_flip_buffer_push	2013-01-15 22:30:15 -08:00
sclp_tty.h	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
sclp_vt220.c	TTY: switch tty_flip_buffer_push	2013-01-15 22:30:15 -08:00
sclp.c	s390/time: rename tod clock access functions	2013-02-14 15:55:10 +01:00
sclp.h	s390/pci: PCI hotplug support via SCLP	2012-11-30 17:47:25 +01:00
tape_34xx.c	s390/irq: remove split irq fields from /proc/stat	2013-01-08 10:57:07 +01:00
tape_3590.c	s390/irq: remove split irq fields from /proc/stat	2013-01-08 10:57:07 +01:00
tape_3590.h	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
tape_char.c	new helper: file_inode(file)	2013-02-22 23:31:31 -05:00
tape_class.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
tape_class.h	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
tape_core.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
tape_proc.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
tape_std.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
tape_std.h	s390/tape: remove even more tape block leftovers	2012-09-26 15:45:20 +02:00
tape.h	s390/tape: remove even more tape block leftovers	2012-09-26 15:45:20 +02:00
tty3270.c	s390/3270: fix minor_start issue	2013-03-21 13:35:39 +01:00
tty3270.h	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
vmcp.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
vmcp.h	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
vmlogrdr.c	s390/vmlogrdr: change return value from -ENOSYS to -EOPNOTSUPP	2012-09-26 15:45:16 +02:00
vmur.c	new helper: file_inode(file)	2013-02-22 23:31:31 -05:00
vmur.h	[S390] vmur: Use wait queue instead of mutex to serialize open	2008-04-17 07:46:59 +02:00
vmwatchdog.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
zcore.c	s390/zcore: Fix HSA copy length for last block	2013-04-23 10:18:07 +02:00