linux/arch/arm64/kvm
Linus Torvalds 6734e20e39 arm64 updates for 5.10
- Userspace support for the Memory Tagging Extension introduced by Armv8.5.
   Kernel support (via KASAN) is likely to follow in 5.11.
 
 - Selftests for MTE, Pointer Authentication and FPSIMD/SVE context
   switching.
 
 - Fix and subsequent rewrite of our Spectre mitigations, including the
   addition of support for PR_SPEC_DISABLE_NOEXEC.
 
 - Support for the Armv8.3 Pointer Authentication enhancements.
 
 - Support for ASID pinning, which is required when sharing page-tables with
   the SMMU.
 
 - MM updates, including treating flush_tlb_fix_spurious_fault() as a no-op.
 
 - Perf/PMU driver updates, including addition of the ARM CMN PMU driver and
   also support to handle CPU PMU IRQs as NMIs.
 
 - Allow prefetchable PCI BARs to be exposed to userspace using normal
   non-cacheable mappings.
 
 - Implementation of ARCH_STACKWALK for unwinding.
 
 - Improve reporting of unexpected kernel traps due to BPF JIT failure.
 
 - Improve robustness of user-visible HWCAP strings and their corresponding
   numerical constants.
 
 - Removal of TEXT_OFFSET.
 
 - Removal of some unused functions, parameters and prototypes.
 
 - Removal of MPIDR-based topology detection in favour of firmware
   description.
 
 - Cleanups to handling of SVE and FPSIMD register state in preparation
   for potential future optimisation of handling across syscalls.
 
 - Cleanups to the SDEI driver in preparation for support in KVM.
 
 - Miscellaneous cleanups and refactoring work.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "There's quite a lot of code here, but much of it is due to the
  addition of a new PMU driver as well as some arm64-specific selftests
  which is an area where we've traditionally been lagging a bit.

  In terms of exciting features, this includes support for the Memory
  Tagging Extension which narrowly missed 5.9, hopefully allowing
  userspace to run with use-after-free detection in production on CPUs
  that support it. Work is ongoing to integrate the feature with KASAN
  for 5.11.

  Another change that I'm excited about (assuming they get the hardware
  right) is preparing the ASID allocator for sharing the CPU page-table
  with the SMMU. Those changes will also come in via Joerg with the
  IOMMU pull.

  We do stray outside of our usual directories in a few places, mostly
  due to core changes required by MTE. Although much of this has been
  Acked, there were a couple of places where we unfortunately didn't get
  any review feedback.

  Other than that, we ran into a handful of minor conflicts in -next,
  but nothing that should post any issues.

  Summary:

   - Userspace support for the Memory Tagging Extension introduced by
     Armv8.5. Kernel support (via KASAN) is likely to follow in 5.11.

   - Selftests for MTE, Pointer Authentication and FPSIMD/SVE context
     switching.

   - Fix and subsequent rewrite of our Spectre mitigations, including
     the addition of support for PR_SPEC_DISABLE_NOEXEC.

   - Support for the Armv8.3 Pointer Authentication enhancements.

   - Support for ASID pinning, which is required when sharing
     page-tables with the SMMU.

   - MM updates, including treating flush_tlb_fix_spurious_fault() as a
     no-op.

   - Perf/PMU driver updates, including addition of the ARM CMN PMU
     driver and also support to handle CPU PMU IRQs as NMIs.

   - Allow prefetchable PCI BARs to be exposed to userspace using normal
     non-cacheable mappings.

   - Implementation of ARCH_STACKWALK for unwinding.

   - Improve reporting of unexpected kernel traps due to BPF JIT
     failure.

   - Improve robustness of user-visible HWCAP strings and their
     corresponding numerical constants.

   - Removal of TEXT_OFFSET.

   - Removal of some unused functions, parameters and prototypes.

   - Removal of MPIDR-based topology detection in favour of firmware
     description.

   - Cleanups to handling of SVE and FPSIMD register state in
     preparation for potential future optimisation of handling across
     syscalls.

   - Cleanups to the SDEI driver in preparation for support in KVM.

   - Miscellaneous cleanups and refactoring work"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (148 commits)
  Revert "arm64: initialize per-cpu offsets earlier"
  arm64: random: Remove no longer needed prototypes
  arm64: initialize per-cpu offsets earlier
  kselftest/arm64: Check mte tagged user address in kernel
  kselftest/arm64: Verify KSM page merge for MTE pages
  kselftest/arm64: Verify all different mmap MTE options
  kselftest/arm64: Check forked child mte memory accessibility
  kselftest/arm64: Verify mte tag inclusion via prctl
  kselftest/arm64: Add utilities and a test to validate mte memory
  perf: arm-cmn: Fix conversion specifiers for node type
  perf: arm-cmn: Fix unsigned comparison to less than zero
  arm64: dbm: Invalidate local TLB when setting TCR_EL1.HD
  arm64: mm: Make flush_tlb_fix_spurious_fault() a no-op
  arm64: Add support for PR_SPEC_DISABLE_NOEXEC prctl() option
  arm64: Pull in task_stack_page() to Spectre-v4 mitigation code
  KVM: arm64: Allow patching EL2 vectors even with KASLR is not enabled
  arm64: Get rid of arm64_ssbd_state
  KVM: arm64: Convert ARCH_WORKAROUND_2 to arm64_get_spectre_v4_state()
  KVM: arm64: Get rid of kvm_arm_have_ssbd()
  KVM: arm64: Simplify handling of ARCH_WORKAROUND_2
  ...
2020-10-12 10:00:51 -07:00
..
hyp arm64 updates for 5.10 2020-10-12 10:00:51 -07:00
vgic arm64: fix some spelling mistakes in the comments by codespell 2020-09-07 14:18:50 +01:00
aarch32.c KVM: arm64: Synchronize sysreg state on injecting an AArch32 exception 2020-06-10 16:04:08 +01:00
arch_timer.c KVM: arm64: timers: Move timer registers to the sys_regs file 2020-07-07 09:28:38 +01:00
arm.c arm64 updates for 5.10 2020-10-12 10:00:51 -07:00
debug.c KVM: arm64: Write arch.mdcr_el2 changes since last vcpu_load on VHE 2020-01-22 18:38:04 +00:00
fpsimd.c KVM: arm64: Make struct kvm_regs userspace-only 2020-07-07 09:28:38 +01:00
guest.c KVM: arm64: Move SPSR_EL1 to the system register array 2020-07-07 09:28:38 +01:00
handle_exit.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
hyp.S arm64: kvm: Annotate assembly using modern annoations 2020-03-09 17:35:29 +00:00
hypercalls.c KVM: arm64: Convert ARCH_WORKAROUND_2 to arm64_get_spectre_v4_state() 2020-09-29 16:08:17 +01:00
inject_fault.c KVM: arm64: Move ELR_EL1 to the system register array 2020-07-07 09:28:38 +01:00
irq.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422 2019-06-05 17:37:15 +02:00
Kconfig KVM: arm64: Replace CONFIG_KVM_INDIRECT_VECTORS with CONFIG_RANDOMIZE_BASE 2020-09-29 16:08:15 +01:00
Makefile Merge branch 'kvm-arm64/target-table-no-more' into kvmarm-master/next-WIP 2020-07-28 16:10:32 +01:00
mmio.c KVM/arm64 updates for Linux 5.9: 2020-08-09 12:58:23 -04:00
mmu.c KVM/arm64 fixes for 5.9, take #2 2020-09-20 17:31:07 -04:00
perf.c KVM: arm64: Move virt/kvm/arm to arch/arm64 2020-05-16 15:03:59 +01:00
pmu-emul.c KVM: arm64: pmu: Make overflow handler NMI safe 2020-09-28 19:00:17 +01:00
pmu.c KVM: arm64: PMU: Fix per-CPU access in preemptible context 2020-07-06 11:47:02 +01:00
psci.c KVM: arm64: Convert ARCH_WORKAROUND_2 to arm64_get_spectre_v4_state() 2020-09-29 16:08:17 +01:00
pvtime.c arm64/x86: KVM: Introduce steal-time cap 2020-08-21 14:05:19 +01:00
regmap.c KVM: arm64: Move SPSR_EL1 to the system register array 2020-07-07 09:28:38 +01:00
reset.c KVM: arm64: Simplify handling of ARCH_WORKAROUND_2 2020-09-29 16:08:16 +01:00
sys_regs.c Merge branch 'for-next/mte' into for-next/core 2020-10-02 12:16:11 +01:00
sys_regs.h KVM: arm64: Remove the target table 2020-07-05 18:20:45 +01:00
trace_arm.h KVM: arm64: Fix address truncation in traces 2020-09-04 10:53:48 +01:00
trace_handle_exit.h KVM: arm64: Fix address truncation in traces 2020-09-04 10:53:48 +01:00
trace.h KVM: arm64: Move virt/kvm/arm to arch/arm64 2020-05-16 15:03:59 +01:00
va_layout.c KVM: arm64: Make nVHE ASLR conditional on RANDOMIZE_BASE 2020-07-28 10:41:11 +01:00
vgic-sys-reg-v3.c KVM: arm64: Move virt/kvm/arm to arch/arm64 2020-05-16 15:03:59 +01:00