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52338415cf
linux_dsm_epyc7002/arch/arm64/include/asm
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Huacai Chen 52338415cf timekeeping/vsyscall: Update VDSO data unconditionally 
The update of the VDSO data is depending on __arch_use_vsyscall() returning
True. This is a leftover from the attempt to map the features of various
architectures 1:1 into generic code.

The usage of __arch_use_vsyscall() in the actual vsyscall implementations
got dropped and replaced by the requirement for the architecture code to
return U64_MAX if the global clocksource is not usable in the VDSO.

But the __arch_use_vsyscall() check in the update code stayed which causes
the VDSO data to be stale or invalid when an architecture actually
implements that function and returns False when the current clocksource is
not usable in the VDSO.

As a consequence the VDSO implementations of clock_getres(), time(),
clock_gettime(CLOCK_.*_COARSE) operate on invalid data and return bogus
information.

Remove the __arch_use_vsyscall() check from the VDSO update function and
update the VDSO data unconditionally.

[ tglx: Massaged changelog and removed the now useless implementations in
  	asm-generic/ARM64/MIPS ]

Fixes: 44f57d788e ("timekeeping: Provide a generic update_vsyscall() implementation")
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/1571887709-11447-1-git-send-email-chenhc@lemote.com
2019-11-04 23:02:53 +01:00
..
vdso timekeeping/vsyscall: Update VDSO data unconditionally 2019-11-04 23:02:53 +01:00
xen xen: fixes and cleanups for 5.4-rc2 2019-10-04 11:13:09 -07:00
acenv.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
acpi.h arm64 updates for 5.3: 2019-07-08 09:54:55 -07:00
alternative.h arm64: alternative: Apply alternatives early in boot process 2019-02-06 10:05:20 +00:00
arch_gicv3.h arm64: Lower priority mask for GIC_PRIO_IRQON 2019-08-01 14:59:48 +01:00
arch_timer.h Merge branch 'timers/vdso' into timers/core 2019-07-03 10:50:21 +02:00
arm_dsu_pmu.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
arm-cci.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
asm-bug.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
asm-offsets.h
asm-prototypes.h arm64: asm-prototypes: Fix fat-fingered typo in comment 2019-01-10 11:11:46 +00:00
asm-uaccess.h arm64: tags: Preserve tags for addresses translated via TTBR1 2019-10-16 10:11:38 -07:00
assembler.h Merge branches 'for-next/52-bit-kva', 'for-next/cpu-topology', 'for-next/error-injection', 'for-next/perf', 'for-next/psci-cpuidle', 'for-next/rng', 'for-next/smpboot', 'for-next/tbi' and 'for-next/tlbi' into for-next/core 2019-08-30 12:46:12 +01:00
atomic_ll_sc.h arm64: atomics: Use K constraint when toolchain appears to support it 2019-08-30 11:18:40 +01:00
atomic_lse.h arm64: Mark functions using explicit register variables as '__always_inline' 2019-10-04 11:15:42 +01:00
atomic.h Merge branch 'for-next/atomics' into for-next/core 2019-08-30 12:55:39 +01:00
barrier.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
bitops.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
bitrev.h
boot.h treewide: replace #include <asm/sizes.h> with #include <linux/sizes.h> 2019-05-14 19:52:52 -07:00
brk-imm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
bug.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
cache.h arm64: prefer __section from compiler_attributes.h 2019-08-13 18:32:15 +01:00
cacheflush.h arm64 updates for 5.3: 2019-07-08 09:54:55 -07:00
checksum.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
clocksource.h
cmpxchg.h arm64: fix unreachable code issue with cmpxchg 2019-09-17 12:11:50 +01:00
compat.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
cpu_ops.h arm64: smp: disable hotplug on trusted OS resident CPU 2019-08-15 11:12:03 +01:00
cpu.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
cpucaps.h arm64: Avoid Cavium TX2 erratum 219 when switching TTBR 2019-10-08 12:25:25 +01:00
cpufeature.h arm64: Clarify when cpu_enable() is called 2019-08-14 17:12:53 +01:00
cpuidle.h
cputype.h arm64: apply ARM64_ERRATUM_845719 workaround for Brahma-B53 core 2019-11-01 10:47:37 +00:00
current.h
daifflags.h arm64: kprobes: Recover pstate.D in single-step exception handler 2019-08-02 11:55:50 +01:00
dcc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
debug-monitors.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
device.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
dmi.h
efi.h arm64: mm: Introduce VA_BITS_MIN 2019-08-09 11:17:16 +01:00
elf.h arm64: vdso: Fix population of AT_SYSINFO_EHDR for compat vdso 2019-07-22 10:33:42 +01:00
esr.h arm64: esr: Add ESR exception class encoding for trapped ERET 2019-08-05 11:06:34 +01:00
exception.h arm64: entry: Move ct_user_exit before any other exception 2019-08-21 18:45:52 +01:00
exec.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
extable.h
fb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
fixmap.h firmware: arm_sdei: Add ACPI GHES registration helper 2019-02-11 11:07:49 +01:00
fpsimd.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
fpsimdmacros.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
ftrace.h tracing/arm64: Have max stack tracer handle the case of return address after data 2019-08-31 12:19:40 -04:00
futex.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
hardirq.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
hugetlb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
hw_breakpoint.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
hwcap.h arm64 updates for 5.3: 2019-07-08 09:54:55 -07:00
hypervisor.h
image.h docs: arm64: convert docs to ReST and rename to .rst 2019-06-14 14:20:27 -06:00
insn.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
io.h arm64: remove __iounmap 2019-09-04 13:12:26 +01:00
irq_work.h
irq.h arm64: Use the new GENERIC_IRQ_MULTI_HANDLER 2018-08-03 12:14:09 +02:00
irqflags.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
jump_label.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
kasan.h arm64: mm: Introduce vabits_actual 2019-08-09 11:17:21 +01:00
Kbuild arm64: use asm-generic/dma-mapping.h 2019-09-11 12:43:27 +02:00
kernel-pgtable.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
kexec.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
kgdb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
kprobes.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
kvm_arm.h KVM: arm64: Update kvm_arm_exception_class and esr_class_str for new EC 2019-07-26 15:40:38 +01:00
kvm_asm.h KVM: arm64: Consume pending SError as early as possible 2019-07-05 13:03:29 +01:00
kvm_coproc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
kvm_emulate.h KVM: arm64: Migrate _elx sysreg accessors to msr_s/mrs_s 2019-07-05 13:57:25 +01:00
kvm_host.h ARM: 2019-07-12 15:35:14 -07:00
kvm_hyp.h arm64: KVM: Kill hyp_alternate_select() 2019-09-09 18:16:32 +01:00
kvm_mmio.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
kvm_mmu.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
kvm_ptrauth.h KVM: arm/arm64: Context-switch ptrauth registers 2019-04-24 15:30:40 +01:00
kvm_ras.h arm64: KVM/mm: Move SEA handling behind a single 'claim' interface 2019-02-07 23:10:45 +01:00
linkage.h
lse.h arm64: asm: Kill 'asm/atomic_arch.h' 2019-08-30 11:18:29 +01:00
memory.h arm64: tags: Preserve tags for addresses translated via TTBR1 2019-10-16 10:11:38 -07:00
mmu_context.h arm64: mm: Introduce 52-bit Kernel VAs 2019-08-09 11:17:26 +01:00
mmu.h arm64: map FDT as RW for early_init_dt_scan() 2019-08-23 16:39:16 +01:00
mmzone.h
module.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
neon-intrinsics.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
neon.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
numa.h arm64: numa: separate out updates to percpu nodeid and NUMA node cpumap 2018-07-06 13:18:18 +01:00
page-def.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
page.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
paravirt.h x86/paravirt: Use a single ops structure 2018-09-03 16:50:35 +02:00
pci.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
percpu.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
perf_event.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
pgalloc.h mm: remove quicklist page table caches 2019-09-24 15:54:09 -07:00
pgtable-hwdef.h arm64: mm: Introduce 52-bit Kernel VAs 2019-08-09 11:17:26 +01:00
pgtable-prot.h arm64: Ensure VM_WRITE|VM_SHARED ptes are clean by default 2019-10-29 16:22:33 +00:00
pgtable-types.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
pgtable.h arm64: Fix kcore macros after 52-bit virtual addressing fallout 2019-10-11 17:36:46 +01:00
pointer_auth.h arm64: mm: Remove vabits_user 2019-08-09 11:17:27 +01:00
preempt.h arm64: preempt: Provide our own implementation of asm/preempt.h 2018-12-07 12:35:53 +00:00
probes.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
proc-fns.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
processor.h arm64, mm: move generic mmap layout functions to mm 2019-09-24 15:54:11 -07:00
ptdump.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
ptrace.h arm64: Add support for function error injection 2019-08-07 13:53:09 +01:00
sdei.h arm64: Use the correct style for SPDX License Identifier 2019-04-16 16:28:01 +01:00
seccomp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sections.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
shmparam.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
signal32.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
simd.h arm64 updates for 5.3: 2019-07-08 09:54:55 -07:00
smp_plat.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
smp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
sparsemem.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
spinlock_types.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
spinlock.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
stack_pointer.h
stackprotector.h arm64: enable per-task stack canaries 2018-12-12 18:45:31 +00:00
stacktrace.h arm64: stacktrace: Better handle corrupted stacks 2019-07-22 11:44:15 +01:00
stage2_pgtable.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
stat.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
string.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
suspend.h
sync_bitops.h arm64, locking/atomics: Use instrumented atomics 2018-11-01 11:01:40 +01:00
syscall_wrapper.h arm64: fix function types in COND_SYSCALL 2019-09-17 12:11:50 +01:00
syscall.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
sysreg.h arm64: sysreg: fix incorrect definition of SYS_PAR_EL1_F 2019-10-16 09:52:28 -07:00
system_misc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
thread_info.h Merge branches 'for-next/52-bit-kva', 'for-next/cpu-topology', 'for-next/error-injection', 'for-next/perf', 'for-next/psci-cpuidle', 'for-next/rng', 'for-next/smpboot', 'for-next/tbi' and 'for-next/tlbi' into for-next/core 2019-08-30 12:46:12 +01:00
timex.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
tlb.h mm: treewide: clarify pgtable_page_{ctor,dtor}() naming 2019-09-26 10:10:44 -07:00
tlbflush.h arm64: tlb: Ensure we execute an ISB following walk cache invalidation 2019-08-27 17:38:26 +01:00
topology.h cpu-topology: Move cpu topology code to common code. 2019-07-22 09:36:06 -07:00
traps.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
uaccess.h arm64: Introduce prctl() options to control the tagged user addresses ABI 2019-08-06 18:08:45 +01:00
unistd32.h clone3-v5.3 2019-07-11 10:09:44 -07:00
unistd.h clone3-v5.3 2019-07-11 10:09:44 -07:00
uprobes.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
vdso.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
virt.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
vmap_stack.h arm64: Use the correct style for SPDX License Identifier 2019-04-16 16:28:01 +01:00
word-at-a-time.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
xor.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00