[GIT PULL] arm64: updates for 5.2

From: Will Deacon
Date: Mon May 06 2019 - 14:12:17 EST

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Hi Linus,

Please pull these arm64 updates for 5.2. As per usual, there are details
in the tag, but it's worth noting that we're including the core
"mitigations=" command-line code here from -tip so that we could develop
arm64 support on top of adding support for the "cpu/vulnerabilities"
directory under sysfs.

There is a straightforward conflict with -tip in the mm/kasan Makefile,
which just involves replacing a '-pg' with '$(CC_FLAGS_FTRACE)'. I also
ended up applying a duplicate of 045afc24124d ("arm64: futex: Fix
FUTEX_WAKE_OP atomic ops with non-zero result value") as 84ff7a09c371,
which I'm not very pleased about. The fix in mainline was based on -rc4,
so the alternative would've been merging all of that in, which seemed a
lot messier. In future, we're going to avoid fast-forwarding our fixes
branch with each -rc, so this shouldn't happen again.

Cheers,

Will

--->8

The following changes since commit 79a3aaa7b82e3106be97842dedfd8429248896e6:

Linux 5.1-rc3 (2019-03-31 14:39:29 -0700)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git tags/arm64-upstream

for you to fetch changes up to b33f908811b7627015238e0dee9baf2b4c9d720d:

Merge branch 'for-next/perf' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into for-next/core (2019-05-03 10:18:08 +0100)

----------------------------------------------------------------
arm64 updates for 5.2

Mostly just incremental improvements here:

- Introduce AT_HWCAP2 for advertising CPU features to userspace

- Expose SVE2 availability to userspace

- Support for "data cache clean to point of deep persistence" (DC PODP)

- Honour "mitigations=off" on the cmdline and advertise status via sysfs

- CPU timer erratum workaround (Neoverse-N1 #1188873)

- Introduce perf PMU driver for the SMMUv3 performance counters

- Add config option to disable the kuser helpers page for AArch32 tasks

- Futex modifications to ensure liveness under contention

- Rework debug exception handling to seperate kernel and user handlers

- Non-critical fixes and cleanup

----------------------------------------------------------------
Alexandru Elisei (1):
arm64: Use defines instead of magic numbers

Andrew Murray (6):
arm64: HWCAP: add support for AT_HWCAP2
arm64: HWCAP: encapsulate elf_hwcap
arm64: Handle trapped DC CVADP
arm64: Expose DC CVADP to userspace
arm64: add CVADP support to the cache maintenance helper
arm64: Advertise ARM64_HAS_DCPODP cpu feature

Anshuman Khandual (1):
KVM: ARM: Remove pgtable page standard functions from stage-2 page tables

Arun KS (1):
arm64: Fix size of __early_cpu_boot_status

Boyang Zhou (1):
arm64: mmap: Ensure file offset is treated as unsigned

Dave Martin (1):
arm64: Expose SVE2 features for userspace

Jean-Philippe Brucker (2):
arm64: Clear OSDLR_EL1 on CPU boot
arm64: Save and restore OSDLR_EL1 across suspend/resume

Jeremy Linton (6):
arm64: Provide a command line to disable spectre_v2 mitigation
arm64: add sysfs vulnerability show for meltdown
arm64: Always enable spectre-v2 vulnerability detection
arm64: add sysfs vulnerability show for spectre-v2
arm64: Always enable ssb vulnerability detection
arm64: add sysfs vulnerability show for speculative store bypass

Josh Poimboeuf (6):
cpu/speculation: Add 'mitigations=' cmdline option
x86/speculation: Support 'mitigations=' cmdline option
powerpc/speculation: Support 'mitigations=' cmdline option
s390/speculation: Support 'mitigations=' cmdline option
arm64/speculation: Support 'mitigations=' cmdline option
Documentation: Add ARM64 to kernel-parameters.rst

Kees Cook (1):
arm64: sysreg: Make mrs_s and msr_s macros work with Clang and LTO

Kefeng Wang (1):
ACPI/IORT: Reject platform device creation on NUMA node mapping failure

Marc Zyngier (13):
arm64: Advertise mitigation of Spectre-v2, or lack thereof
arm64: Use firmware to detect CPUs that are not affected by Spectre-v2
arm64: Restrict ARM64_ERRATUM_1188873 mitigation to AArch32
arm64: Make ARM64_ERRATUM_1188873 depend on COMPAT
arm64: Add part number for Neoverse N1
arm64: Apply ARM64_ERRATUM_1188873 to Neoverse-N1
ARM: vdso: Remove dependency with the arch_timer driver internals
watchdog/sbsa: Use arch_timer_read_counter instead of arch_counter_get_cntvct
arm64: Use arch_timer_read_counter instead of arch_counter_get_cntvct
clocksource/arm_arch_timer: Direcly assign set_next_event workaround
clocksource/arm_arch_timer: Drop use of static key in arch_timer_reg_read_stable
clocksource/arm_arch_timer: Remove use of workaround static key
clocksource/arm_arch_timer: Use arch_timer_read_counter to access stable counters

Mark Rutland (1):
arm64: instrument smp_{load_acquire,store_release}

Masahiro Yamada (2):
arm64: vdso: fix and clean-up Makefile
arm64: vdso: use $(LD) instead of $(CC) to link VDSO

Masami Hiramatsu (1):
arm64: ptrace: Add function argument access API

Matteo Croce (1):
arm64/vdso: don't leak kernel addresses

Mian Yousaf Kaukab (2):
arm64: Add sysfs vulnerability show for spectre-v1
arm64: enable generic CPU vulnerabilites support

Miles Chen (2):
arm64: setup min_low_pfn
arm64: mm: check virtual addr in virt_to_page() if CONFIG_DEBUG_VIRTUAL=y

Muchun Song (1):
arm64: mm: fix incorrect assignment of 'max_mapnr'

Neil Leeder (2):
ACPI/IORT: Add support for PMCG
perf/smmuv3: Add arm64 smmuv3 pmu driver

Nishad Kamdar (1):
arm64: Use the correct style for SPDX License Identifier

Qian Cai (3):
arm64/mm: fix kernel-doc comments
arm64: Fix compiler warning from pte_unmap() with -Wunused-but-set-variable
arm64: mm: Remove pte_unmap_nested()

Raphael Gault (1):
arm64: perf_event: Remove wrongfully used inline

Robin Murphy (2):
perf/arm-cci: Remove broken race mitigation
perf/arm-ccn: Clean up CPU hotplug handling

Shameer Kolothum (2):
perf/smmuv3: Add MSI irq support
perf/smmuv3: Enable HiSilicon Erratum 162001800 quirk

Torsten Duwe (3):
arm64: Makefile: Replace -pg with CC_FLAGS_FTRACE
efi/arm/arm64: Makefile: Replace -pg with CC_FLAGS_FTRACE
kasan: Makefile: Replace -pg with CC_FLAGS_FTRACE

Vincenzo Frascino (7):
arm64: compat: Reduce address limit
arm64: vdso: Fix clock_getres() for CLOCK_REALTIME
arm64: compat: Alloc separate pages for vectors and sigpage
arm64: compat: Split kuser32
arm64: compat: Refactor aarch32_alloc_vdso_pages()
arm64: compat: Add KUSER_HELPERS config option
arm64: compat: Reduce address limit for 64K pages

Wen Yang (1):
arm64: cpu_ops: fix a leaked reference by adding missing of_node_put

Will Deacon (25):
arm64: mm: Make show_pte() a static function
arm64: mm: Ensure we ignore the initrd if it is placed out of range
arm64: debug: Remove unused return value from do_debug_exception()
arm64: debug: Rename addr parameter for non-watchpoint exception hooks
arm64: debug: Remove meaningless comment
arm64: debug: Separate debug hooks based on target exception level
arm64: kprobes: Avoid calling kprobes debug handlers explicitly
arm64: debug: Remove redundant user_mode(regs) checks from debug handlers
arm64: probes: Move magic BRK values into brk-imm.h
arm64: debug: Clean up brk_handler()
arm64: mm: Consolidate early page table allocation
arm64: Kconfig: Make CONFIG_COMPAT a menuconfig entry
Merge branch 'core/speculation' of git://git.kernel.org/.../tip/tip into for-next/mitigations
arm64: futex: Fix FUTEX_WAKE_OP atomic ops with non-zero result value
locking/futex: Allow low-level atomic operations to return -EAGAIN
arm64: futex: Bound number of LDXR/STXR loops in FUTEX_WAKE_OP
arm64: futex: Avoid copying out uninitialised stack in failed cmpxchg()
futex: Update comments and docs about return values of arch futex code
arm64: Kconfig: Tidy up errata workaround help text
arm64: arch_timer: Ensure counter register reads occur with seqlock held
arm64: ssbs: Don't treat CPUs with SSBS as unaffected by SSB
Merge branch 'for-next/futex' of git://git.kernel.org/.../arm64/linux into for-next/core
Merge branch 'for-next/mitigations' of git://git.kernel.org/.../arm64/linux into for-next/core
Merge branch 'for-next/timers' of git://git.kernel.org/.../arm64/linux into for-next/core
Merge branch 'for-next/perf' of git://git.kernel.org/.../will/linux into for-next/core

Xiongfeng Wang (1):
firmware: arm_sdei: Prohibit probing in '_sdei_handler'

Yu Zhao (3):
arm64: mm: use appropriate ctors for page tables
arm64: mm: don't call page table ctors for init_mm
arm64: mm: enable per pmd page table lock

Documentation/admin-guide/kernel-parameters.rst | 1 +
Documentation/admin-guide/kernel-parameters.txt | 42 +-
Documentation/arm64/cpu-feature-registers.txt | 16 +
Documentation/arm64/elf_hwcaps.txt | 41 +-
Documentation/arm64/silicon-errata.txt | 2 +
Documentation/arm64/sve.txt | 17 +
Documentation/robust-futexes.txt | 3 +-
arch/arm/include/asm/arch_timer.h | 18 +-
arch/arm/include/asm/cp15.h | 2 +
arch/arm/include/asm/stage2_pgtable.h | 4 +-
arch/arm/vdso/vgettimeofday.c | 5 +-
arch/arm64/Kconfig | 132 ++--
arch/arm64/boot/dts/mediatek/mt2712-pinfunc.h | 2 +-
arch/arm64/crypto/aes-ce-ccm-glue.c | 2 +-
arch/arm64/crypto/aes-neonbs-glue.c | 2 +-
arch/arm64/crypto/chacha-neon-glue.c | 2 +-
arch/arm64/crypto/crct10dif-ce-glue.c | 4 +-
arch/arm64/crypto/ghash-ce-glue.c | 8 +-
arch/arm64/crypto/nhpoly1305-neon-glue.c | 2 +-
arch/arm64/crypto/sha256-glue.c | 4 +-
arch/arm64/include/asm/arch_timer.h | 119 +++-
arch/arm64/include/asm/assembler.h | 8 +-
arch/arm64/include/asm/barrier.h | 24 +-
arch/arm64/include/asm/brk-imm.h | 5 +
arch/arm64/include/asm/cpucaps.h | 3 +-
arch/arm64/include/asm/cpufeature.h | 25 +-
arch/arm64/include/asm/cputype.h | 2 +
arch/arm64/include/asm/debug-monitors.h | 25 +-
arch/arm64/include/asm/elf.h | 6 +-
arch/arm64/include/asm/esr.h | 7 +-
arch/arm64/include/asm/futex.h | 63 +-
arch/arm64/include/asm/hwcap.h | 60 +-
arch/arm64/include/asm/irqflags.h | 8 +-
arch/arm64/include/asm/kprobes.h | 2 -
arch/arm64/include/asm/kvm_hyp.h | 4 +-
arch/arm64/include/asm/memory.h | 2 +-
arch/arm64/include/asm/pgalloc.h | 12 +-
arch/arm64/include/asm/pgtable.h | 5 +-
arch/arm64/include/asm/pointer_auth.h | 2 +-
arch/arm64/include/asm/processor.h | 8 +
arch/arm64/include/asm/ptrace.h | 22 +
arch/arm64/include/asm/sdei.h | 2 +-
arch/arm64/include/asm/signal32.h | 2 -
arch/arm64/include/asm/stage2_pgtable.h | 4 +-
arch/arm64/include/asm/sysreg.h | 59 +-
arch/arm64/include/asm/system_misc.h | 1 -
arch/arm64/include/asm/tlb.h | 5 +-
arch/arm64/include/asm/vdso_datapage.h | 1 +
arch/arm64/include/asm/vmap_stack.h | 2 +-
arch/arm64/include/uapi/asm/hwcap.h | 13 +-
arch/arm64/kernel/Makefile | 11 +-
arch/arm64/kernel/asm-offsets.c | 2 +-
arch/arm64/kernel/cpu_errata.c | 256 +++++--
arch/arm64/kernel/cpu_ops.c | 1 +
arch/arm64/kernel/cpufeature.c | 193 ++++--
arch/arm64/kernel/cpuinfo.c | 9 +-
arch/arm64/kernel/debug-monitors.c | 115 ++--
arch/arm64/kernel/entry.S | 19 +-
arch/arm64/kernel/fpsimd.c | 4 +-
arch/arm64/kernel/head.S | 12 +-
arch/arm64/kernel/kgdb.c | 30 +-
arch/arm64/kernel/kuser32.S | 66 +-
arch/arm64/kernel/perf_event.c | 4 +-
arch/arm64/kernel/probes/kprobes.c | 22 +-
arch/arm64/kernel/probes/uprobes.c | 19 +-
arch/arm64/kernel/signal32.c | 3 +-
arch/arm64/kernel/sigreturn32.S | 46 ++
arch/arm64/kernel/sys.c | 2 +-
arch/arm64/kernel/traps.c | 33 +-
arch/arm64/kernel/vdso.c | 139 +++-
arch/arm64/kernel/vdso/Makefile | 19 +-
arch/arm64/kernel/vdso/gettimeofday.S | 22 +-
arch/arm64/lib/Makefile | 2 +-
arch/arm64/mm/fault.c | 16 +-
arch/arm64/mm/init.c | 5 +-
arch/arm64/mm/mmu.c | 47 +-
arch/arm64/mm/numa.c | 25 +-
arch/arm64/mm/proc.S | 34 +-
arch/powerpc/kernel/security.c | 6 +-
arch/powerpc/kernel/setup_64.c | 2 +-
arch/s390/kernel/nospec-branch.c | 3 +-
arch/x86/kernel/cpu/bugs.c | 11 +-
arch/x86/mm/pti.c | 4 +-
drivers/acpi/arm64/iort.c | 150 +++-
drivers/clocksource/arm_arch_timer.c | 138 ++--
drivers/firmware/arm_sdei.c | 3 +
drivers/firmware/efi/libstub/Makefile | 6 +-
drivers/perf/Kconfig | 9 +
drivers/perf/Makefile | 1 +
drivers/perf/arm-cci.c | 21 +-
drivers/perf/arm-ccn.c | 25 +-
drivers/perf/arm_smmuv3_pmu.c | 865 ++++++++++++++++++++++++
drivers/watchdog/sbsa_gwdt.c | 2 +-
include/asm-generic/futex.h | 8 +-
include/linux/acpi_iort.h | 8 +
include/linux/cpu.h | 24 +
kernel/cpu.c | 15 +
kernel/futex.c | 188 +++--
mm/kasan/Makefile | 6 +-
virt/kvm/arm/mmu.c | 2 +-
100 files changed, 2624 insertions(+), 839 deletions(-)
create mode 100644 arch/arm64/kernel/sigreturn32.S
create mode 100644 drivers/perf/arm_smmuv3_pmu.c

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