Will Deacon dbb236c1ce arm64/vdso: Fix nsec handling for CLOCK_MONOTONIC_RAW ... Recently vDSO support for CLOCK_MONOTONIC_RAW was added in 49eea433b3 ("arm64: Add support for CLOCK_MONOTONIC_RAW in clock_gettime() vDSO"). Noticing that the core timekeeping code never set tkr_raw.xtime_nsec, the vDSO implementation didn't bother exposing it via the data page and instead took the unshifted tk->raw_time.tv_nsec value which was then immediately shifted left in the vDSO code. Unfortunately, by accellerating the MONOTONIC_RAW clockid, it uncovered potential 1ns time inconsistencies caused by the timekeeping core not handing sub-ns resolution. Now that the core code has been fixed and is actually setting tkr_raw.xtime_nsec, we need to take that into account in the vDSO by adding it to the shifted raw_time value, in order to fix the user-visible inconsistency. Rather than do that at each use (and expand the data page in the process), instead perform the shift/addition operation when populating the data page and remove the shift from the vDSO code entirely. [jstultz: minor whitespace tweak, tried to improve commit message to make it more clear this fixes a regression] Reported-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Tested-by: Daniel Mentz <danielmentz@google.com> Acked-by: Kevin Brodsky <kevin.brodsky@arm.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Stephen Boyd <stephen.boyd@linaro.org> Cc: "stable #4 . 8+" <stable@vger.kernel.org> Cc: Miroslav Lichvar <mlichvar@redhat.com> Link: http://lkml.kernel.org/r/1496965462-20003-4-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2017-06-20 10:41:51 +02:00
..
probes	arm64: kprobes: remove kprobe_exceptions_notify	2017-03-10 17:41:19 +00:00
vdso	arm64/vdso: Fix nsec handling for CLOCK_MONOTONIC_RAW	2017-06-20 10:41:51 +02:00
.gitignore	arm64: Build infrastructure	2012-09-17 13:42:21 +01:00
acpi_numa.c	arm64/numa: avoid inconsistent information to be printed	2016-09-09 14:59:08 +01:00
acpi_parking_protocol.c	arm64: Use __pa_symbol for kernel symbols	2017-01-12 15:05:39 +00:00
acpi.c	efi/bgrt: Enable ACPI BGRT handling on arm64	2017-04-05 12:27:25 +02:00
alternative.c	arm64: alternatives: apply boot time fixups via the linear mapping	2017-03-23 13:54:19 +00:00
arm64ksyms.c	arm64: switch to RAW_COPY_USER	2017-03-28 18:23:24 -04:00
armv8_deprecated.c	arm64: armv8_deprecated: ensure extension of addr	2017-05-09 17:47:05 +01:00
asm-offsets.c	arm: kernel: Add SMC structure parameter	2017-02-03 18:46:33 +00:00
cacheinfo.c	arm64: cacheinfo: Remove CCSIDR-based cache information probing	2017-03-20 16:16:54 +00:00
cpu_errata.c	arm64: cpu_errata: Add capability to advertise Cortex-A73 erratum 858921	2017-04-07 11:22:08 +01:00
cpu_ops.c	arm64: apply __ro_after_init to some objects	2016-08-22 12:32:29 +01:00
cpu-reset.h	arm64: Use __pa_symbol for kernel symbols	2017-01-12 15:05:39 +00:00
cpu-reset.S	arm64: Add back cpu reset routines	2016-06-27 16:31:25 +01:00
cpufeature.c	arm64/cpufeature: don't use mutex in bringup path	2017-05-17 17:00:29 +01:00
cpuidle.c	arm64: kernel: Update kerneldoc for cpu_suspend() rename	2017-03-10 18:06:24 +00:00
cpuinfo.c	arm64: v8.3: Support for weaker release consistency	2017-03-20 16:30:22 +00:00
crash_dump.c	arm64: kdump: provide /proc/vmcore file	2017-04-05 18:31:38 +01:00
debug-monitors.c	arm64: cpufeature: Make ID reg accessor naming less counterintuitive	2017-04-04 16:55:41 +01:00
efi-entry.S	arm64: efi-entry.S: avoid open-coded adr_l	2017-01-17 17:41:14 +00:00
efi-header.S	arm64: efi: split Image code and data into separate PE/COFF sections	2017-04-04 17:50:59 +01:00
efi.c	arm64: mm: replace 'block_mappings_allowed' with 'page_mappings_only'	2016-11-07 18:15:04 +00:00
entry32.S	arm64: entry32: remove pointless register assignment	2015-07-10 16:47:13 +01:00
entry-fpsimd.S	arm64: fpsimd: fix a typo in fpsimd_save_partial_state ENDPROC	2014-07-31 11:42:42 +01:00
entry-ftrace.S	arm64: include asm/assembler.h in entry-ftrace.S	2017-02-15 11:34:25 +00:00
entry.S	arm64: entry: improve data abort handling of tagged pointers	2017-05-09 17:26:59 +01:00
fpsimd.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>	2017-03-02 08:42:29 +01:00
ftrace.c	ftrace: Add return address pointer to ftrace_ret_stack	2016-08-24 12:15:14 +02:00
head.S	Merge branch 'arm64/common-sysreg' of git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux into for-next/core	2017-04-04 18:08:47 +01:00
hibernate-asm.S	arm64: Introduce raw_{d,i}cache_line_size	2016-09-09 15:03:29 +01:00
hibernate.c	arm64: hibernate: preserve kdump image around hibernation	2017-04-05 18:28:50 +01:00
hw_breakpoint.c	arm64: hw_breakpoint: fix watchpoint matching for tagged pointers	2017-05-09 17:26:40 +01:00
hyp-stub.S	arm64: hyp-stub: Zero x0 on successful stub handling	2017-04-09 07:49:35 -07:00
image.h	arm64 updates for 4.7:	2016-05-16 17:17:24 -07:00
insn.c	bpf, arm64: implement jiting of BPF_XADD	2017-05-02 15:04:50 -04:00
io.c	arm64: optimize memcpy_{from,to}io() and memset_io()	2014-11-06 17:25:27 +00:00
irq.c	arm64: remove irq_count and do_softirq_own_stack()	2015-12-21 17:26:01 +00:00
jump_label.c	jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}	2015-08-03 11:34:12 +02:00
kaslr.c	arm64: kaslr: Fix up the kernel image alignment	2017-03-22 15:43:11 +00:00
kgdb.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
kuser32.S	arm64: Add __NR_* definitions for compat syscalls	2014-07-10 11:02:40 +01:00
machine_kexec.c	arm64: kdump: add VMCOREINFO's for user-space tools	2017-04-05 18:29:47 +01:00
Makefile	arm64: kdump: provide /proc/vmcore file	2017-04-05 18:31:38 +01:00
module-plts.c	arm64: module: split core and init PLT sections	2017-04-26 12:31:00 +01:00
module.c	arm64: Silence first allocation with CONFIG_ARM64_MODULE_PLTS=y	2017-05-11 14:43:40 +01:00
module.lds	arm64: module: split core and init PLT sections	2017-04-26 12:31:00 +01:00
paravirt.c	arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops	2015-12-21 14:40:54 +00:00
pci.c	ARM64: PCI: Fix struct acpi_pci_root_ops allocation failure path	2017-05-25 16:52:58 +01:00
perf_callchain.c	perf core: Add a 'nr' field to perf_event_callchain_context	2016-05-16 23:11:51 -03:00
perf_event.c	arm64: perf: Ignore exclude_hv when kernel is running in HYP	2017-05-15 18:30:37 +01:00
perf_regs.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
process.c	arm64: drop unnecessary newlines in show_regs()	2017-03-23 14:20:41 +00:00
psci.c	arm64: Use __pa_symbol for kernel symbols	2017-01-12 15:05:39 +00:00
ptrace.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
reloc_test_core.c	arm64: relocation testing module	2017-04-04 17:03:32 +01:00
reloc_test_syms.S	arm64: relocation testing module	2017-04-04 17:03:32 +01:00
relocate_kernel.S	arm64: Introduce raw_{d,i}cache_line_size	2016-09-09 15:03:29 +01:00
return_address.c	arm64: factor out current_stack_pointer	2016-11-11 18:25:43 +00:00
setup.c	arm64: Print DT machine model in setup_machine_fdt()	2017-04-28 17:09:41 +01:00
signal32.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
signal.c	arm64: Add uprobe support	2016-11-07 18:15:21 +00:00
sleep.S	arm64: move sp_el0 and tpidr_el1 into cpu_suspend_ctx	2016-11-11 18:25:44 +00:00
smccc-call.S	firmware: qcom: scm: Fix interrupted SCM calls	2017-02-03 18:46:33 +00:00
smp_spin_table.c	arm64: Use __pa_symbol for kernel symbols	2017-01-12 15:05:39 +00:00
smp.c	arm64 updates for 4.12:	2017-05-05 12:11:37 -07:00
stacktrace.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
suspend.c	arm64: move sp_el0 and tpidr_el1 into cpu_suspend_ctx	2016-11-11 18:25:44 +00:00
sys32.c	arm64: fix implementation of mmap2 compat syscall	2015-03-19 10:43:51 +00:00
sys_compat.c	sched/headers: Prepare for the reduction of <linux/sched.h>'s signal API dependency	2017-03-02 08:42:37 +01:00
sys.c	arm64: compat: Check for AArch32 state	2016-04-20 12:22:42 +01:00
time.c	arm64: ftrace: fix a stack tracer's output under function graph tracer	2015-12-21 17:26:02 +00:00
topology.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/topology.h>	2017-03-02 08:42:26 +01:00
trace-events-emulation.h	arm64: Trace emulation of AArch32 legacy instructions	2014-11-20 16:35:02 +00:00
traps.c	arm64: traps: fix userspace cache maintenance emulation on a tagged pointer	2017-05-09 17:26:17 +01:00
vdso.c	arm64/vdso: Fix nsec handling for CLOCK_MONOTONIC_RAW	2017-06-20 10:41:51 +02:00
vmlinux.lds.S	arm64: efi: split Image code and data into separate PE/COFF sections	2017-04-04 17:50:59 +01:00