Martin Schwidefsky 6e2ef5e4f6 s390/time: add support for the TOD clock epoch extension ... The TOD epoch extension adds 8 epoch bits to the TOD clock to provide a continuous clock after 2042/09/17. The store-clock-extended (STCKE) instruction will store the epoch index in the first byte of the 16 bytes stored by the instruction. The read_boot_clock64 and the read_presistent_clock64 functions need to take the additional bits into account to give the correct result after 2042/09/17. The clock-comparator register will stay 64 bit wide. The comparison of the clock-comparator with the TOD clock is limited to bytes 1 to 8 of the extended TOD format. To deal with the overflow problem due to an epoch change the clock-comparator sign control in CR0 can be used to switch the comparison of the 64-bit TOD clock with the clock-comparator to a signed comparison. The decision between the signed vs. unsigned clock-comparator comparisons is done at boot time. Only if the TOD clock is in the second half of a 142 year epoch the signed comparison is used. This solves the epoch overflow issue as long as the machine is booted at least once in an epoch. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2017-07-26 08:25:14 +02:00
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vdso32	s390/mm: use new mm defines instead of magic values	2017-07-26 08:25:09 +02:00
vdso64	s390/mm: use new mm defines instead of magic values	2017-07-26 08:25:09 +02:00
.gitignore	s390: add various .gitignore files.	2012-05-16 14:42:41 +02:00
als.c	s390/sclp: don't add new lines to each printed string	2017-02-08 14:13:20 +01:00
asm-offsets.c	s390/time: add support for the TOD clock epoch extension	2017-07-26 08:25:14 +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/kdump: fix nosmt kernel parameter	2015-06-25 09:39:26 +02:00
cache.c	s390/cpuinfo: show dynamic and static cpu mhz	2016-06-13 15:58:17 +02:00
compat_audit.c	[S390] Get rid of a bunch of sparse warnings again.	2007-10-12 16:13:06 +02:00
compat_linux.c	s390: kernel: Audit and remove any unnecessary uses of module.h	2017-02-17 07:40:31 +01:00
compat_linux.h	s390: add support for vector extension	2014-10-09 09:14:13 +02:00
compat_ptrace.h	[S390] ptrace cleanup	2011-01-05 12:47:31 +01:00
compat_signal.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
compat_wrapper.c	s390: add a system call for guarded storage	2017-03-22 08:14:25 +01:00
cpcmd.c	s390: kernel: Audit and remove any unnecessary uses of module.h	2017-02-17 07:40:31 +01:00
crash_dump.c	s390/kdump: Add final note	2017-03-28 16:54:31 +02:00
debug.c	s390/time: add support for the TOD clock epoch extension	2017-07-26 08:25:14 +02:00
diag.c	s390/diag: add diag26c support	2017-06-20 15:44:15 -04:00
dis.c	s390: kernel: Audit and remove any unnecessary uses of module.h	2017-02-17 07:40:31 +01:00
dumpstack.c	s390/mm: use new mm defines instead of magic values	2017-07-26 08:25:09 +02:00
early_printk.c	s390/sclp: make early sclp code readable	2017-02-08 14:13:19 +01:00
early.c	s390/time: add support for the TOD clock epoch extension	2017-07-26 08:25:14 +02:00
ebcdic.c	s390: kernel: Audit and remove any unnecessary uses of module.h	2017-02-17 07:40:31 +01:00
entry.h	s390: add a system call for guarded storage	2017-03-22 08:14:25 +01:00
entry.S	s390,kvm: provide plumbing for machines checks when running guests	2017-06-28 12:57:47 +02:00
fpu.c	s390/fpu: improve kernel_fpu_[begin|end]	2016-08-29 11:05:01 +02:00
ftrace.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2017-05-16 09:24:44 -07:00
guarded_storage.c	s390: add a system call for guarded storage	2017-03-22 08:14:25 +01:00
head64.S	s390/time: add support for the TOD clock epoch extension	2017-07-26 08:25:14 +02:00
head_kdump.S	s390: remove 31 bit support	2015-03-25 11:49:33 +01:00
head.S	s390/time: add support for the TOD clock epoch extension	2017-07-26 08:25:14 +02:00
idle.c	sched/headers: Prepare to move cputime functionality from <linux/sched.h> into <linux/sched/cputime.h>	2017-03-02 08:42:39 +01:00
ipl.c	s390/ipl: revert Load Normal semantics for LPAR CCW-type re-IPL	2017-06-14 15:35:31 +02:00
irq.c	s390/time: add support for the TOD clock epoch extension	2017-07-26 08:25:14 +02:00
jump_label.c	s390: Prevent hotplug rwsem recursion	2017-05-26 10:10:46 +02:00
kdebugfs.c	s390/debugfs: introduce top-level 's390' directory	2017-03-22 08:29:15 +01:00
kprobes.c	s390: Prevent hotplug rwsem recursion	2017-05-26 10:10:46 +02:00
lgr.c	s390: kernel: make lgr explicitly non-modular	2016-10-31 17:55:42 +01:00
machine_kexec.c	kexec: move vmcoreinfo out of the kernel's .bss section	2017-07-12 16:25:59 -07:00
Makefile	s390/debugfs: introduce top-level 's390' directory	2017-03-22 08:29:15 +01:00
mcount.S	s390: move exports to definitions	2016-08-07 23:47:20 -04:00
module.c	s390: add no-execute support	2017-02-08 14:13:25 +01:00
nmi.c	KVM: s390: Backup the guest's machine check info	2017-06-27 16:05:38 +02:00
os_info.c	s390: proper type casts for csum_partial invocations	2017-01-16 07:27:53 +01:00
perf_cpum_cf_events.c	s390/cpum_cf: correct variable naming (cleanup)	2017-03-31 07:53:33 +02:00
perf_cpum_cf.c	s390/cpum_cf: make hw_perf_event_update() a void function	2017-03-31 07:53:35 +02:00
perf_cpum_sf.c	s390/perf: fix problem state detection	2017-07-13 11:28:29 +02:00
perf_event.c	s390/perf: fix null string in perf list pmu command	2017-06-12 16:26:00 +02:00
pgm_check.S	s390: remove 31 bit support	2015-03-25 11:49:33 +01:00
process.c	arch: remove unused macro/function thread_saved_pc()	2017-06-28 16:13:57 -07:00
processor.c	s390/cpuinfo: show facilities as reported by stfle	2017-03-22 08:29:02 +01:00
ptrace.c	s390/ptrace: guarded storage regset for the current task	2017-06-12 16:25:59 +02:00
reipl.S	s390/dump: rework CPU register dump code	2015-11-27 09:24:14 +01:00
relocate_kernel.S	s390/mm: use new mm defines instead of magic values	2017-07-26 08:25:09 +02:00
runtime_instr.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
setup.c	s390/time: add support for the TOD clock epoch extension	2017-07-26 08:25:14 +02:00
signal.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
smp.c	s390/smp: fix false positive kmemleak of mcesa data structure	2017-06-12 16:25:58 +02:00
stacktrace.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>	2017-03-02 08:42:34 +01:00
suspend.c	s390/mm: tag normal pages vs pages used in page tables	2017-07-25 06:55:28 +02:00
swsusp.S	s390/sclp: don't add new lines to each printed string	2017-02-08 14:13:20 +01:00
sys_s390.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
syscalls.S	s390: add a system call for guarded storage	2017-03-22 08:14:25 +01:00
sysinfo.c	S390/sysinfo: use uuid_is_null instead of opencoding it	2017-06-05 16:59:06 +02:00
time.c	s390/time: add support for the TOD clock epoch extension	2017-07-26 08:25:14 +02:00
topology.c	s390/sysinfo,topology: provide raw stsi 15,1,x data via debugfs	2017-03-22 08:29:15 +01:00
trace.c	s390/diag: avoid lockdep recursion	2016-02-11 13:05:56 +01:00
traps.c	s390: add missing header includes for type checking	2017-06-12 16:25:55 +02:00
uprobes.c	s390: rename struct psw_bits members	2017-06-12 16:26:02 +02:00
vdso.c	s390/mm: tag normal pages vs pages used in page tables	2017-07-25 06:55:28 +02:00
vmlinux.lds.S	s390: move _text symbol to address higher than zero	2017-05-09 10:44:38 +02:00
vtime.c	s390/cputime: simplify account_system_index_scaled	2017-06-12 16:25:57 +02:00