Carsten Otte 402b08622d s390: KVM preparation: provide hook to enable pgstes in user pagetable ... The SIE instruction on s390 uses the 2nd half of the page table page to virtualize the storage keys of a guest. This patch offers the s390_enable_sie function, which reorganizes the page tables of a single-threaded process to reserve space in the page table: s390_enable_sie makes sure that the process is single threaded and then uses dup_mm to create a new mm with reorganized page tables. The old mm is freed and the process has now a page status extended field after every page table. Code that wants to exploit pgstes should SELECT CONFIG_PGSTE. This patch has a small common code hit, namely making dup_mm non-static. Edit (Carsten): I've modified Martin's patch, following Jeremy Fitzhardinge's review feedback. Now we do have the prototype for dup_mm in include/linux/sched.h. Following Martin's suggestion, s390_enable_sie() does now call task_lock() to prevent race against ptrace modification of mm_users. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Carsten Otte <cotte@de.ibm.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Avi Kivity <avi@qumranet.com>		2008-04-27 12:00:40 +03:00
..
irq	cpumask: Cleanup more uses of CPU_MASK and NODE_MASK	2008-04-19 19:44:58 +02:00
power	Merge branches 'release' and 'doc' into release	2008-03-13 01:59:53 -04:00
time	softlockup: fix NOHZ wakeup	2008-04-25 00:25:08 +02:00
.gitignore	…
Kconfig.hz	…
Kconfig.preempt	rcu: move PREEMPT_RCU config option back under PREEMPT	2008-03-10 18:01:20 -07:00
Makefile	Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-kgdb	2008-04-18 08:37:01 -07:00
acct.c	bsd_acct: using task_struct->tgid is not right in pid-namespaces	2008-03-24 19:22:20 -07:00
audit.c	Audit: internally use the new LSM audit hooks	2008-04-19 09:52:37 +10:00
audit.h	SELinux: use new audit hooks, remove redundant exports	2008-04-19 09:53:46 +10:00
audit_tree.c	…
auditfilter.c	Audit: Final renamings and cleanup	2008-04-19 09:59:43 +10:00
auditsc.c	Audit: Final renamings and cleanup	2008-04-19 09:59:43 +10:00
backtracetest.c	…
capability.c	…
cgroup.c	cgroup: fix a race condition in manipulating tsk->cg_list	2008-04-18 08:17:57 -07:00
cgroup_debug.c	…
compat.c	generic: reduce stack pressure in sched_affinity	2008-04-19 19:44:59 +02:00
configs.c	…
cpu.c	generic: use new set_cpus_allowed_ptr function	2008-04-19 19:44:58 +02:00
cpuset.c	sched, cpuset: customize sched domains, core	2008-04-19 19:45:00 +02:00
delayacct.c	…
dma.c	…
exec_domain.c	…
exit.c	[PATCH] sanitize unshare_files/reset_files_struct	2008-04-25 09:23:59 -04:00
extable.c	…
fork.c	s390: KVM preparation: provide hook to enable pgstes in user pagetable	2008-04-27 12:00:40 +03:00
futex.c	NULL noise: fs/*, mm/*, kernel/*	2008-03-30 14:18:41 -07:00
futex_compat.c	futex_compat __user annotation	2008-03-30 14:18:41 -07:00
hrtimer.c	hrtimer: optimize the softirq time optimization	2008-04-21 07:59:51 +02:00
itimer.c	…
kallsyms.c	…
kexec.c	kernel: Remove unnecessary inclusions of asm/semaphore.h	2008-04-18 22:17:04 -04:00
kfifo.c	…
kgdb.c	kgdb: always use icache flush for sw breakpoints	2008-04-17 20:05:43 +02:00
kmod.c	generic: use new set_cpus_allowed_ptr function	2008-04-19 19:44:58 +02:00
kprobes.c	kprobes: fix a null pointer bug in register_kretprobe()	2008-03-04 16:35:19 -08:00
ksysfs.c	…
kthread.c	Merge branch 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc	2008-04-21 15:41:27 -07:00
latencytop.c	latencytop: optimize LT_BACKTRACEDEPTH loops a bit	2008-04-19 19:44:57 +02:00
lockdep.c	Subject: lockdep: include all lock classes in all_lock_classes	2008-02-25 23:03:02 +01:00
lockdep_internals.h	…
lockdep_proc.c	…
marker.c	markers: use synchronize_sched()	2008-04-02 15:28:19 -07:00
module.c	kernel: Remove unnecessary inclusions of asm/semaphore.h	2008-04-18 22:17:04 -04:00
mutex-debug.c	…
mutex-debug.h	…
mutex.c	…
mutex.h	…
notifier.c	…
ns_cgroup.c	…
nsproxy.c	…
panic.c	…
params.c	…
pid.c	…
pid_namespace.c	…
pm_qos_params.c	…
posix-cpu-timers.c	posix-timers: fix shadowed variables	2008-04-17 12:22:30 +02:00
posix-timers.c	kernel: Remove unnecessary inclusions of asm/semaphore.h	2008-04-18 22:17:04 -04:00
printk.c	Fix locking bug in "acquire_console_semaphore_for_printk()"	2008-04-15 13:09:54 -07:00
profile.c	kernel: Remove unnecessary inclusions of asm/semaphore.h	2008-04-18 22:17:04 -04:00
ptrace.c	ptrace: compat_ptrace_request siginfo	2008-04-21 15:53:41 -07:00
rcuclassic.c	…
rcupdate.c	…
rcupreempt.c	generic: reduce stack pressure in sched_affinity	2008-04-19 19:44:59 +02:00
rcupreempt_trace.c	…
rcutorture.c	generic: use new set_cpus_allowed_ptr function	2008-04-19 19:44:58 +02:00
relay.c	relay: set an spd_release() hook for splice	2008-03-26 12:04:09 +01:00
res_counter.c	Memory Resource Controller use strstrip while parsing arguments	2008-03-04 16:35:09 -08:00
resource.c	PCI: clean up resource alignment management	2008-04-20 21:47:08 -07:00
rtmutex-debug.c	…
rtmutex-debug.h	…
rtmutex-tester.c	…
rtmutex.c	…
rtmutex.h	…
rtmutex_common.h	…
rwsem.c	…
sched.c	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6	2008-04-25 12:50:00 -07:00
sched_debug.c	sched: build fix	2008-04-19 19:45:01 +02:00
sched_fair.c	sched: debug: show a weight tree	2008-04-19 19:45:00 +02:00
sched_features.h	sched: /debug/sched_features	2008-04-19 19:45:00 +02:00
sched_idletask.c	…
sched_rt.c	sched: rt-group: optimize dequeue_rt_stack	2008-04-19 19:45:00 +02:00
sched_stats.h	cpumask: use new cpus_scnprintf function	2008-04-19 19:44:59 +02:00
seccomp.c	…
semaphore.c	Improve semaphore documentation	2008-04-17 10:43:01 -04:00
signal.c	trivial: small cleanups	2008-04-21 22:15:06 +00:00
softirq.c	tasklets: execute tasklets in the same order they were queued	2008-04-19 19:44:58 +02:00
softlockup.c	softlockup: fix task state setting	2008-02-29 18:46:53 +01:00
spinlock.c	…
srcu.c	…
stacktrace.c	…
stop_machine.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial	2008-04-21 16:36:46 -07:00
sys.c	generic, x86: add prctl commands PR_GET_TSC and PR_SET_TSC	2008-04-19 19:19:55 +02:00
sys_ni.c	…
sysctl.c	sched: rt-group: synchonised bandwidth period	2008-04-19 19:44:57 +02:00
sysctl_check.c	…
taskstats.c	…
test_kprobes.c	…
time.c	time: Export set_normalized_timespec.	2008-04-21 19:45:12 -07:00
timeconst.pl	…
timer.c	timers: simplify lockdep handling	2008-04-17 12:22:31 +02:00
tsacct.c	…
uid16.c	asmlinkage_protect replaces prevent_tail_call	2008-04-10 17:28:26 -07:00
user.c	sched: fix the task_group hierarchy for UID grouping	2008-04-19 19:45:00 +02:00
user_namespace.c	…
utsname.c	…
utsname_sysctl.c	…
wait.c	…
workqueue.c	timer_list: add annotations to workqueue.c	2008-04-17 12:22:30 +02:00