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linux/arch/s390/kernel
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Heiko Carstens 5b43bd1845 s390/vdso: fix initializing and updating of vdso_data 
Li Wang reported that clock_gettime(CLOCK_MONOTONIC_RAW, ...) returns
incorrect values when time is provided via vdso instead of system call:

vdso_ts_nsec = 4484351380985507, vdso_ts.tv_sec = 4484351, vdso_ts.tv_nsec = 380985507
sys_ts_nsec  = 1446923235377, sys_ts.tv_sec  = 1446, sys_ts.tv_nsec  = 923235377

Within the s390 specific vdso function __arch_get_hw_counter() reads
tod clock steering values from the arch_data member of the passed in
vdso_data structure.

Problem is that only for the CS_HRES_COARSE vdso_data arch_data is
initialized and gets updated. The CS_RAW specific vdso_data does not
contain any valid tod_clock_steering information, which explains the
different values.

Fix this by initializing and updating all vdso_datas.

Reported-by: Li Wang <liwang@redhat.com>
Tested-by: Li Wang <liwang@redhat.com>
Fixes: 1ba2d6c0fd4e ("s390/vdso: simplify __arch_get_hw_counter()")
Link: https://lore.kernel.org/linux-s390/YFnxr1ZlMIOIqjfq@osiris
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-03-25 21:57:26 +01:00
..
syscalls
fs: add mount_setattr()
2021-01-24 14:42:45 +01:00
vdso64
s390/vdso: use union tod_clock
2021-02-13 17:17:54 +01:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
alternative.c
s390: add automatic detection of the spectre defense
2018-03-28 08:38:24 +02:00
asm-offsets.c
s390: add stack for machine check handler
2021-02-13 17:17:53 +01:00
audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
audit.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
base.S
s390: remove unused s390_base_ext_handler
2020-11-09 11:20:58 +01:00
cache.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_linux.c
s390: use generic UID16 implementation
2019-01-18 09:33:18 +01:00
compat_linux.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_ptrace.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_signal.c
s390: convert to generic entry
2021-01-19 12:29:26 +01:00
cpcmd.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
crash_dump.c
elf_prstatus: collect the common part (everything before pr_reg) into a struct
2021-01-06 08:38:29 -05:00
debug.c
s390/debug: use union tod_clock
2021-02-13 17:17:54 +01:00
diag.c
s390/diag: convert to use DEFINE_SEQ_ATTRIBUTE macro
2020-09-17 14:11:03 +02:00
dis.c
s390/dis: get rid of set_fs() usage
2020-09-17 14:11:03 +02:00
dumpstack.c
kernel: rename show_stack_loglvl() => show_stack()
2020-06-09 09:39:13 -07:00
early_printk.c
s390/sclp: remove unused sclp_early_printk_forced
2020-09-21 08:08:44 +02:00
early.c
s390/time: convert tod_clock_base to union
2021-02-13 17:17:54 +01:00
ebcdic.c
s390: ebcdic: convert comments to UTF-8
2018-08-23 18:48:43 -07:00
entry.h
s390: convert to generic entry
2021-01-19 12:29:26 +01:00
entry.S
s390: split cleanup_sie
2021-02-13 17:17:53 +01:00
fpu.c
s390: convert to generic entry
2021-01-19 12:29:26 +01:00
ftrace.c
Tracing updates for 5.11
2020-12-17 13:22:17 -08:00
guarded_storage.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-13 11:47:01 -08:00
head64.S
s390/early: rewrite program parameter setup in C
2020-11-09 11:21:00 +01:00
idle.c
s390/time,idle: get rid of unsigned long long
2021-03-08 10:46:27 +01:00
ima_arch.c
s390/kexec_file: Disable kexec_load when IPLed secure
2019-04-29 10:44:03 +02:00
ipl_vmparm.c
s390/ipl: provide uapi header for list directed IPL
2019-04-26 12:34:05 +02:00
ipl.c
s390/delay: remove udelay_simple()
2020-12-16 14:55:49 +01:00
irq.c
Rework of the X86 irq stack handling:
2021-02-24 16:32:23 -08:00
jump_label.c
s390/jump_label: remove unused structure definition
2019-06-07 10:10:10 +02:00
kdebugfs.c
s390: no need to check return value of debugfs_create functions
2019-01-28 15:58:55 +01:00
kexec_elf.c
kexec: Fix file verification on S390
2019-09-10 13:27:51 +01:00
kexec_image.c
kexec_file: split KEXEC_VERIFY_SIG into KEXEC_SIG and KEXEC_SIG_FORCE
2019-08-19 21:54:15 -07:00
kprobes_insn_page.S
s390/kprobes: move insn_page to text segment
2020-10-09 23:45:30 +02:00
kprobes.c
s390 updates for the 5.10 merge window
2020-10-16 12:36:38 -07:00
lgr.c
s390: convert to msecs_to_jiffies()
2020-06-29 16:31:46 +02:00
machine_kexec_file.c
s390/kexec_file: fix initrd location for kdump kernel
2020-05-14 23:21:37 +02:00
machine_kexec_reloc.c
s390/kaslr: add support for R_390_JMP_SLOT relocation type
2020-05-20 10:13:27 +02:00
machine_kexec.c
mm: remove unneeded includes of <asm/pgalloc.h>
2020-08-07 11:33:26 -07:00
Makefile
s390: convert to generic entry
2021-01-19 12:29:26 +01:00
mcount.S
s390/ftrace: assume -mhotpatch or -mrecord-mcount always available
2020-11-20 19:19:11 +01:00
module.c
s390/module: Use s390_kernel_write() for late relocations
2020-05-08 00:12:43 +02:00
nmi.c
s390: convert to generic entry
2021-01-19 12:29:26 +01:00
nospec-branch.c
s390 updates for the 5.2 merge window
2019-05-06 16:42:54 -07:00
nospec-sysfs.c
s390: Convert IS_ENABLED uses to __is_defined
2019-04-11 13:36:53 +02:00
numa.c
s390/numa: move code to arch/s390/kernel
2020-08-11 18:16:55 +02:00
os_info.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
perf_cpum_cf_common.c
s390/cpum_cf: move common functions into a separate file
2019-02-22 09:19:55 +01:00
perf_cpum_cf_diag.c
s390/cpumf: disable preemption when accessing per-cpu variable
2021-03-15 19:09:25 +01:00
perf_cpum_cf_events.c
s390/cpum_cf,perf: change DFLT_CCERROR counter name
2020-07-21 13:53:56 +02:00
perf_cpum_cf.c
s390/cpumf: remove unneeded semicolon
2021-03-08 10:46:29 +01:00
perf_cpum_sf.c
s390/time: convert tod_clock_base to union
2021-02-13 17:17:54 +01:00
perf_event.c
s390: add error handling to perf_callchain_kernel
2019-10-31 17:20:54 +01:00
perf_regs.c
perf/arch: Remove perf_sample_data::regs_user_copy
2020-11-09 18:12:34 +01:00
pgm_check.S
s390: add 3f program exception handler
2020-09-14 10:08:07 +02:00
process.c
arch: setup PF_IO_WORKER threads like PF_KTHREAD
2021-02-21 17:25:22 -07:00
processor.c
s390/cpuinfo: do not skip info for CPUs without MHz feature
2020-03-23 13:41:55 +01:00
ptrace.c
s390: convert to generic entry
2021-01-19 12:29:26 +01:00
reipl.S
s390: add missing ENDPROC statements to assembler functions
2019-05-02 13:54:11 +02:00
relocate_kernel.S
s390: add missing ENDPROC statements to assembler functions
2019-05-02 13:54:11 +02:00
runtime_instr.c
s390/runtime_instrumentation: fix storage key handling
2020-08-17 13:17:10 +02:00
setup.c
s390: add stack for machine check handler
2021-02-13 17:17:53 +01:00
signal.c
s390: add missing include to arch/s390/kernel/signal.c
2021-01-27 13:00:47 +01:00
smp.c
s390/smp: implement arch_irq_work_raise()
2021-02-24 00:31:22 +01:00
stacktrace.c
stacktrace: Remove reliable argument from arch_stack_walk() callback
2020-09-18 14:24:16 +01:00
sthyi.c
s390/sthyi: Fix machine name validity indication
2018-10-15 12:17:00 +02:00
syscall.c
s390: pass struct pt_regs instead of registers to syscalls
2021-01-19 12:29:27 +01:00
sysinfo.c
s390: no need to check return value of debugfs_create functions
2019-01-28 15:58:55 +01:00
time.c
s390/vdso: fix initializing and updating of vdso_data
2021-03-25 21:57:26 +01:00
topology.c
s390/topology: remove always false if check
2021-03-08 10:46:27 +01:00
trace.c
s390/ftrace: fix potential crashes when switching tracers
2020-04-22 16:20:55 +02:00
traps.c
s390: convert to generic entry
2021-01-19 12:29:26 +01:00
unwind_bc.c
s390/unwind: stop gracefully at user mode pt_regs in irq stack
2019-12-18 23:29:26 +01:00
uprobes.c
s390: convert to generic entry
2021-01-19 12:29:26 +01:00
uv.c
s390: uv: Fix sysfs max number of VCPUs reporting
2021-01-27 13:00:04 +01:00
vdso.c
s390/vdso: on timens page fault prefault also VVAR page
2021-02-09 15:57:05 +01:00
vmlinux.lds.S
s390/mm: use invalid asce instead of kernel asce
2020-11-23 12:01:12 +01:00
vtime.c
s390/vtime: fix increased steal time accounting
2021-03-15 19:09:25 +01:00