[GIT PULL] arm64 updates for 4.16

From: Catalin Marinas
Date: Tue Jan 30 2018 - 14:26:48 EST

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Hi Linus,

The main theme of this pull request is security covering variants 2 and
3 for arm64. I expect to send additional patches next week covering an
improved firmware interface (requires firmware changes) for variant 2
and way for KPTI to be disabled on unaffected CPUs (Cavium's ThunderX
doesn't work properly with KPTI enabled because of a hardware erratum).

This pull request touches KVM (for variant 2), drivers/* (it introduces
an arm64 firmware interface, drivers/irqchip/irq-gic-v3.c (some ARM perf
refactoring) and kernel/events/core.c (one line to export a symbol).
Acks are in place.

Thank you.

The following changes since commit 50c4c4e268a2d7a3e58ebb698ac74da0de40ae36:

Linux 4.15-rc3 (2017-12-10 17:56:26 -0800)

are available in the git repository at:

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

for you to fetch changes up to ec89ab50a03a33a4a648869e868b1964354fb2d1:

arm64: Fix TTBR + PAN + 52-bit PA logic in cpu_do_switch_mm (2018-01-26 18:23:17 +0000)

----------------------------------------------------------------
arm64 updates for 4.16:

- Security mitigations:
- variant 2: invalidating the branch predictor with a call to secure firmware
- variant 3: implementing KPTI for arm64

- 52-bit physical address support for arm64 (ARMv8.2)

- arm64 support for RAS (firmware first only) and SDEI (software
delegated exception interface; allows firmware to inject a RAS error
into the OS)

- Perf support for the ARM DynamIQ Shared Unit PMU

- CPUID and HWCAP bits updated for new floating point multiplication
instructions in ARMv8.4

- Removing some virtual memory layout printks during boot

- Fix initial page table creation to cope with larger than 32M kernel
images when 16K pages are enabled

----------------------------------------------------------------
Catalin Marinas (5):
Merge branch 'kpti' of git://git.kernel.org/.../arm64/linux
Merge branch 'for-next/52-bit-pa' into for-next/core
arm64: asid: Do not replace active_asids if already 0
Merge branch 'for-next/perf' of git://git.kernel.org/.../will/linux
arm64: kpti: Fix the interaction between ASID switching and software PAN

Dave Martin (1):
arm64: fpsimd: Fix state leakage when migrating after sigreturn

Dongjiu Geng (2):
arm64: v8.4: Support for new floating point multiplication instructions
KVM: arm64: Emulate RAS error registers and set HCR_EL2's TERR & TEA

James Morse (27):
KVM: arm64: Store vcpu on the stack during __guest_enter()
KVM: arm/arm64: Convert kvm_host_cpu_state to a static per-cpu allocation
KVM: arm64: Change hyp_panic()s dependency on tpidr_el2
arm64: alternatives: use tpidr_el2 on VHE hosts
KVM: arm64: Stop save/restoring host tpidr_el1 on VHE
Docs: dt: add devicetree binding for describing arm64 SDEI firmware
firmware: arm_sdei: Add driver for Software Delegated Exceptions
arm64: Add vmap_stack header file
arm64: uaccess: Add PAN helper
arm64: kernel: Add arch-specific SDEI entry code and CPU masking
firmware: arm_sdei: Add support for CPU and system power states
firmware: arm_sdei: add support for CPU private events
arm64: acpi: Remove __init from acpi_psci_use_hvc() for use by SDEI
firmware: arm_sdei: Discover SDEI support via ACPI
arm64: mmu: add the entry trampolines start/end section markers into sections.h
arm64: sdei: Add trampoline code for remapping the kernel
arm64: cpufeature: __this_cpu_has_cap() shouldn't stop early
arm64: sysreg: Move to use definitions for all the SCTLR bits
arm64: kernel: Survive corrected RAS errors notified by SError
arm64: Unconditionally enable IESB on exception entry/return for firmware-first
arm64: kernel: Prepare for a DISR user
KVM: arm/arm64: mask/unmask daif around VHE guests
KVM: arm64: Set an impdef ESR for Virtual-SError using VSESR_EL2.
KVM: arm64: Save/Restore guest DISR_EL1
KVM: arm64: Save ESR_EL2 on guest SError
KVM: arm64: Handle RAS SErrors from EL1 on guest exit
KVM: arm64: Handle RAS SErrors from EL2 on guest exit

Jason A. Donenfeld (1):
arm64: make label allocation style consistent in tishift

Jayachandran C (3):
arm64: cputype: Add MIDR values for Cavium ThunderX2 CPUs
arm64: Branch predictor hardening for Cavium ThunderX2
arm64: Turn on KPTI only on CPUs that need it

Kristina Martsenko (12):
arm64: add kconfig symbol to configure physical address size
arm64: limit PA size to supported range
arm64: handle 52-bit addresses in TTBR
arm64: head.S: handle 52-bit PAs in PTEs in early page table setup
arm64: don't open code page table entry creation
arm64: handle 52-bit physical addresses in page table entries
arm64: allow ID map to be extended to 52 bits
arm64: enable 52-bit physical address support
arm64: fix ID map extension to 52 bits
KVM: arm/arm64: fix HYP ID map extension to 52 bits
arm64: fix comment above tcr_compute_pa_size
arm64: mm: ignore memory above supported physical address size

Laura Abbott (1):
arm64: Stop printing the virtual memory layout

Marc Zyngier (4):
arm64: Move post_ttbr_update_workaround to C code
arm64: KVM: Use per-CPU vector when BP hardening is enabled
arm64: KVM: Make PSCI_VERSION a fast path
arm64: Move BP hardening to check_and_switch_context

Prashanth Prakash (2):
cpuidle: Add new macro to enter a retention idle state
ARM64 / cpuidle: Use new cpuidle macro for entering retention state

Punit Agrawal (1):
arm64: Correct type for PUD macros

Shanker Donthineni (1):
arm64: Implement branch predictor hardening for Falkor

Stephen Boyd (2):
arm64: cpu_errata: Add Kryo to Falkor 1003 errata
arm64: Inform user if software PAN is in use

Steve Capper (4):
arm64: Re-order reserved_ttbr0 in linker script
arm64: entry: Move the trampoline to be before PAN
arm64: Extend early page table code to allow for larger kernels
arm64: Fix TTBR + PAN + 52-bit PA logic in cpu_do_switch_mm

Suzuki K Poulose (11):
perf: Export perf_event_update_userpage
of: Add helper for mapping device node to logical CPU number
coresight: of: Use of_cpu_node_to_id helper
irqchip: gic-v3: Use of_cpu_node_to_id helper
arm64: Use of_cpu_node_to_id helper for CPU topology parsing
arm_pmu: Use of_cpu_node_to_id helper
dt-bindings: Document devicetree binding for ARM DSU PMU
perf: ARM DynamIQ Shared Unit PMU support
arm64: capabilities: Handle duplicate entries for a capability
perf: dsu: Use signed field for dsu_pmu->num_counters
arm64: Run enable method for errata work arounds on late CPUs

Wei Yongjun (1):
firmware: arm_sdei: Fix return value check in sdei_present_dt()

Will Deacon (28):
arm64: mm: Use non-global mappings for kernel space
arm64: mm: Temporarily disable ARM64_SW_TTBR0_PAN
arm64: mm: Move ASID from TTBR0 to TTBR1
arm64: mm: Remove pre_ttbr0_update_workaround for Falkor erratum #E1003
arm64: mm: Rename post_ttbr0_update_workaround
arm64: mm: Fix and re-enable ARM64_SW_TTBR0_PAN
arm64: mm: Allocate ASIDs in pairs
arm64: mm: Add arm64_kernel_unmapped_at_el0 helper
arm64: mm: Invalidate both kernel and user ASIDs when performing TLBI
arm64: entry: Add exception trampoline page for exceptions from EL0
arm64: mm: Map entry trampoline into trampoline and kernel page tables
arm64: entry: Explicitly pass exception level to kernel_ventry macro
arm64: entry: Hook up entry trampoline to exception vectors
arm64: erratum: Work around Falkor erratum #E1003 in trampoline code
arm64: tls: Avoid unconditional zeroing of tpidrro_el0 for native tasks
arm64: entry: Add fake CPU feature for unmapping the kernel at EL0
arm64: Kconfig: Add CONFIG_UNMAP_KERNEL_AT_EL0
perf: arm_spe: Fail device probe when arm64_kernel_unmapped_at_el0()
arm64: mm: Introduce TTBR_ASID_MASK for getting at the ASID in the TTBR
arm64: kaslr: Put kernel vectors address in separate data page
arm64: use RET instruction for exiting the trampoline
arm64: Kconfig: Reword UNMAP_KERNEL_AT_EL0 kconfig entry
arm64: Take into account ID_AA64PFR0_EL1.CSV3
arm64: cpufeature: Pass capability structure to ->enable callback
drivers/firmware: Expose psci_get_version through psci_ops structure
arm64: Add skeleton to harden the branch predictor against aliasing attacks
arm64: cputype: Add missing MIDR values for Cortex-A72 and Cortex-A75
arm64: Implement branch predictor hardening for affected Cortex-A CPUs

Xie XiuQi (1):
arm64: cpufeature: Detect CPU RAS Extentions

Documentation/arm64/cpu-feature-registers.txt | 4 +-
Documentation/arm64/elf_hwcaps.txt | 4 +
Documentation/arm64/silicon-errata.txt | 2 +-
.../devicetree/bindings/arm/arm-dsu-pmu.txt | 27 +
.../devicetree/bindings/arm/firmware/sdei.txt | 42 +
Documentation/perf/arm_dsu_pmu.txt | 28 +
MAINTAINERS | 9 +
arch/arm/include/asm/kvm_host.h | 5 +
arch/arm/include/asm/kvm_mmu.h | 17 +
arch/arm64/Kconfig | 91 +-
arch/arm64/include/asm/alternative.h | 2 +
arch/arm64/include/asm/arm_dsu_pmu.h | 129 +++
arch/arm64/include/asm/asm-uaccess.h | 42 +-
arch/arm64/include/asm/assembler.h | 75 +-
arch/arm64/include/asm/cpucaps.h | 6 +-
arch/arm64/include/asm/cputype.h | 9 +
arch/arm64/include/asm/efi.h | 12 +-
arch/arm64/include/asm/esr.h | 20 +
arch/arm64/include/asm/exception.h | 14 +
arch/arm64/include/asm/fixmap.h | 5 +
arch/arm64/include/asm/fpsimd.h | 2 +-
arch/arm64/include/asm/kernel-pgtable.h | 59 +-
arch/arm64/include/asm/kvm_arm.h | 2 +
arch/arm64/include/asm/kvm_asm.h | 2 +
arch/arm64/include/asm/kvm_emulate.h | 17 +
arch/arm64/include/asm/kvm_host.h | 19 +
arch/arm64/include/asm/kvm_mmu.h | 59 +-
arch/arm64/include/asm/mmu.h | 49 +
arch/arm64/include/asm/mmu_context.h | 27 +-
arch/arm64/include/asm/percpu.h | 11 +-
arch/arm64/include/asm/pgalloc.h | 6 +-
arch/arm64/include/asm/pgtable-hwdef.h | 32 +-
arch/arm64/include/asm/pgtable-prot.h | 21 +-
arch/arm64/include/asm/pgtable.h | 57 +-
arch/arm64/include/asm/proc-fns.h | 6 -
arch/arm64/include/asm/processor.h | 1 +
arch/arm64/include/asm/sdei.h | 57 +
arch/arm64/include/asm/sections.h | 1 +
arch/arm64/include/asm/sparsemem.h | 2 +-
arch/arm64/include/asm/stacktrace.h | 3 +
arch/arm64/include/asm/sysreg.h | 92 +-
arch/arm64/include/asm/tlbflush.h | 16 +-
arch/arm64/include/asm/traps.h | 54 +
arch/arm64/include/asm/uaccess.h | 40 +-
arch/arm64/include/asm/vmap_stack.h | 28 +
arch/arm64/include/uapi/asm/hwcap.h | 1 +
arch/arm64/kernel/Makefile | 5 +
arch/arm64/kernel/acpi.c | 2 +-
arch/arm64/kernel/alternative.c | 9 +-
arch/arm64/kernel/asm-offsets.c | 12 +-
arch/arm64/kernel/bpi.S | 87 ++
arch/arm64/kernel/cpu_errata.c | 192 +++-
arch/arm64/kernel/cpufeature.c | 146 ++-
arch/arm64/kernel/cpuidle.c | 8 +-
arch/arm64/kernel/cpuinfo.c | 1 +
arch/arm64/kernel/entry.S | 396 ++++++-
arch/arm64/kernel/fpsimd.c | 4 +-
arch/arm64/kernel/head.S | 245 +++--
arch/arm64/kernel/hibernate-asm.S | 12 +-
arch/arm64/kernel/hibernate.c | 5 +-
arch/arm64/kernel/irq.c | 13 +-
arch/arm64/kernel/process.c | 12 +-
arch/arm64/kernel/sdei.c | 235 +++++
arch/arm64/kernel/signal.c | 7 +-
arch/arm64/kernel/signal32.c | 5 +-
arch/arm64/kernel/smp.c | 11 +-
arch/arm64/kernel/suspend.c | 4 +-
arch/arm64/kernel/topology.c | 16 +-
arch/arm64/kernel/traps.c | 51 +-
arch/arm64/kernel/vmlinux.lds.S | 27 +-
arch/arm64/kvm/handle_exit.c | 32 +-
arch/arm64/kvm/hyp-init.S | 30 +-
arch/arm64/kvm/hyp/entry.S | 35 +-
arch/arm64/kvm/hyp/hyp-entry.S | 18 +-
arch/arm64/kvm/hyp/s2-setup.c | 2 +
arch/arm64/kvm/hyp/switch.c | 60 +-
arch/arm64/kvm/hyp/sysreg-sr.c | 22 +-
arch/arm64/kvm/inject_fault.c | 13 +-
arch/arm64/kvm/sys_regs.c | 11 +
arch/arm64/lib/clear_user.S | 4 +-
arch/arm64/lib/copy_from_user.S | 4 +-
arch/arm64/lib/copy_in_user.S | 4 +-
arch/arm64/lib/copy_to_user.S | 4 +-
arch/arm64/lib/tishift.S | 8 +-
arch/arm64/mm/cache.S | 4 +-
arch/arm64/mm/context.c | 67 +-
arch/arm64/mm/fault.c | 17 +
arch/arm64/mm/init.c | 46 +-
arch/arm64/mm/mmu.c | 47 +-
arch/arm64/mm/pgd.c | 8 +
arch/arm64/mm/proc.S | 66 +-
arch/arm64/xen/hypercall.S | 4 +-
drivers/firmware/Kconfig | 8 +
drivers/firmware/Makefile | 1 +
drivers/firmware/arm_sdei.c | 1092 ++++++++++++++++++++
drivers/firmware/psci.c | 2 +
drivers/hwtracing/coresight/of_coresight.c | 15 +-
drivers/irqchip/irq-gic-v3.c | 29 +-
drivers/of/base.c | 26 +
drivers/perf/Kconfig | 9 +
drivers/perf/Makefile | 1 +
drivers/perf/arm_dsu_pmu.c | 843 +++++++++++++++
drivers/perf/arm_pmu_platform.c | 15 +-
drivers/perf/arm_spe_pmu.c | 9 +
include/linux/arm_sdei.h | 79 ++
include/linux/cpuhotplug.h | 1 +
include/linux/cpuidle.h | 40 +-
include/linux/of.h | 7 +
include/linux/psci.h | 4 +-
include/uapi/linux/arm_sdei.h | 73 ++
kernel/events/core.c | 1 +
virt/kvm/arm/arm.c | 35 +-
virt/kvm/arm/mmu.c | 12 +-
113 files changed, 4941 insertions(+), 579 deletions(-)
create mode 100644 Documentation/devicetree/bindings/arm/arm-dsu-pmu.txt
create mode 100644 Documentation/devicetree/bindings/arm/firmware/sdei.txt
create mode 100644 Documentation/perf/arm_dsu_pmu.txt
create mode 100644 arch/arm64/include/asm/arm_dsu_pmu.h
create mode 100644 arch/arm64/include/asm/sdei.h
create mode 100644 arch/arm64/include/asm/vmap_stack.h
create mode 100644 arch/arm64/kernel/bpi.S
create mode 100644 arch/arm64/kernel/sdei.c
create mode 100644 drivers/firmware/arm_sdei.c
create mode 100644 drivers/perf/arm_dsu_pmu.c
create mode 100644 include/linux/arm_sdei.h
create mode 100644 include/uapi/linux/arm_sdei.h

--
Catalin

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