linux.git/arch/arm/kernel, branch v5.7-rc2

Merge tag 'spdx-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx

2020-04-03T20:12:26+00:00

Pull SPDX updates from Greg KH:
 "Here are three SPDX patches for 5.7-rc1.

  One fixes up the SPDX tag for a single driver, while the other two go
  through the tree and add SPDX tags for all of the .gitignore files as
  needed.

  Nothing too complex, but you will get a merge conflict with your
  current tree, that should be trivial to handle (one file modified by
  two things, one file deleted.)

  All three of these have been in linux-next for a while, with no
  reported issues other than the merge conflict"

* tag 'spdx-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx:
  ASoC: MT6660: make spdxcheck.py happy
  .gitignore: add SPDX License Identifier
  .gitignore: remove too obvious comments

Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

2020-04-03T18:20:16+00:00

Pull ARM updates from Russell King:

 - replace setup_irq() with request_irq() for ebsa110, footbridge, rpc

 - fix clang assembly error in kexec code

 - remove .fixup section in boot stub

 - decompressor / EFI cache flushing updates

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8966/1: rpc: replace setup_irq() by request_irq()
  ARM: 8965/2: footbridge: replace setup_irq() by request_irq()
  ARM: 8964/1: ebsa110: replace setup_irq() by request_irq()
  ARM: 8962/1: kexec: drop invalid assembly argument
  ARM: decompressor: switch to by-VA cache maintenance for v7 cores
  ARM: decompressor: prepare cache_clean_flush for doing by-VA maintenance
  ARM: decompressor: factor out routine to obtain the inflated image size
  ARM: 8959/1: Remove unused .fixup section in boot stub
  ARM: allow unwinder to unwind recursive functions

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2020-04-02T22:13:15+00:00

Pull kvm updates from Paolo Bonzini:
 "ARM:
   - GICv4.1 support

   - 32bit host removal

  PPC:
   - secure (encrypted) using under the Protected Execution Framework
     ultravisor

  s390:
   - allow disabling GISA (hardware interrupt injection) and protected
     VMs/ultravisor support.

  x86:
   - New dirty bitmap flag that sets all bits in the bitmap when dirty
     page logging is enabled; this is faster because it doesn't require
     bulk modification of the page tables.

   - Initial work on making nested SVM event injection more similar to
     VMX, and less buggy.

   - Various cleanups to MMU code (though the big ones and related
     optimizations were delayed to 5.8). Instead of using cr3 in
     function names which occasionally means eptp, KVM too has
     standardized on "pgd".

   - A large refactoring of CPUID features, which now use an array that
     parallels the core x86_features.

   - Some removal of pointer chasing from kvm_x86_ops, which will also
     be switched to static calls as soon as they are available.

   - New Tigerlake CPUID features.

   - More bugfixes, optimizations and cleanups.

  Generic:
   - selftests: cleanups, new MMU notifier stress test, steal-time test

   - CSV output for kvm_stat"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (277 commits)
  x86/kvm: fix a missing-prototypes "vmread_error"
  KVM: x86: Fix BUILD_BUG() in __cpuid_entry_get_reg() w/ CONFIG_UBSAN=y
  KVM: VMX: Add a trampoline to fix VMREAD error handling
  KVM: SVM: Annotate svm_x86_ops as __initdata
  KVM: VMX: Annotate vmx_x86_ops as __initdata
  KVM: x86: Drop __exit from kvm_x86_ops' hardware_unsetup()
  KVM: x86: Copy kvm_x86_ops by value to eliminate layer of indirection
  KVM: x86: Set kvm_x86_ops only after ->hardware_setup() completes
  KVM: VMX: Configure runtime hooks using vmx_x86_ops
  KVM: VMX: Move hardware_setup() definition below vmx_x86_ops
  KVM: x86: Move init-only kvm_x86_ops to separate struct
  KVM: Pass kvm_init()'s opaque param to additional arch funcs
  s390/gmap: return proper error code on ksm unsharing
  KVM: selftests: Fix cosmetic copy-paste error in vm_mem_region_move()
  KVM: Fix out of range accesses to memslots
  KVM: X86: Micro-optimize IPI fastpath delay
  KVM: X86: Delay read msr data iff writes ICR MSR
  KVM: PPC: Book3S HV: Add a capability for enabling secure guests
  KVM: arm64: GICv4.1: Expose HW-based SGIs in debugfs
  KVM: arm64: GICv4.1: Allow non-trapping WFI when using HW SGIs
  ...

Merge tag 'smp-core-2020-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-03-31T01:06:39+00:00

Pull core SMP updates from Thomas Gleixner:
 "CPU (hotplug) updates:

   - Support for locked CSD objects in smp_call_function_single_async()
     which allows to simplify callsites in the scheduler core and MIPS

   - Treewide consolidation of CPU hotplug functions which ensures the
     consistency between the sysfs interface and kernel state. The low
     level functions cpu_up/down() are now confined to the core code and
     not longer accessible from random code"

* tag 'smp-core-2020-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
  cpu/hotplug: Ignore pm_wakeup_pending() for disable_nonboot_cpus()
  cpu/hotplug: Hide cpu_up/down()
  cpu/hotplug: Move bringup of secondary CPUs out of smp_init()
  torture: Replace cpu_up/down() with add/remove_cpu()
  firmware: psci: Replace cpu_up/down() with add/remove_cpu()
  xen/cpuhotplug: Replace cpu_up/down() with device_online/offline()
  parisc: Replace cpu_up/down() with add/remove_cpu()
  sparc: Replace cpu_up/down() with add/remove_cpu()
  powerpc: Replace cpu_up/down() with add/remove_cpu()
  x86/smp: Replace cpu_up/down() with add/remove_cpu()
  arm64: hibernate: Use bringup_hibernate_cpu()
  cpu/hotplug: Provide bringup_hibernate_cpu()
  arm64: Use reboot_cpu instead of hardconding it to 0
  arm64: Don't use disable_nonboot_cpus()
  ARM: Use reboot_cpu instead of hardcoding it to 0
  ARM: Don't use disable_nonboot_cpus()
  ia64: Replace cpu_down() with smp_shutdown_nonboot_cpus()
  cpu/hotplug: Create a new function to shutdown nonboot cpus
  cpu/hotplug: Add new {add,remove}_cpu() functions
  sched/core: Remove rq.hrtick_csd_pending
  ...

ARM: Use reboot_cpu instead of hardcoding it to 0

2020-03-25T11:59:33+00:00

Use `reboot_cpu` variable instead of hardcoding 0 as the reboot cpu in
machine_shutdown().

Signed-off-by: Qais Yousef 
Signed-off-by: Thomas Gleixner 
Cc: Russell King 
Link: https://lkml.kernel.org/r/20200323135110.30522-6-qais.yousef@arm.com

ARM: Don't use disable_nonboot_cpus()

2020-03-25T11:59:32+00:00

disable_nonboot_cpus() is not safe to use when doing machine_down(),
because it relies on freeze_secondary_cpus() which in turn is
a suspend/resume related freeze and could abort if the logic detects any
pending activities that can prevent finishing the offlining process.

Beside disable_nonboot_cpus() is dependent on CONFIG_PM_SLEEP_SMP which
is an othogonal config to rely on to ensure this function works
correctly.

Signed-off-by: Qais Yousef 
Signed-off-by: Thomas Gleixner 
Cc: Russell King 
Link: https://lkml.kernel.org/r/20200323135110.30522-5-qais.yousef@arm.com

.gitignore: add SPDX License Identifier

2020-03-25T10:50:48+00:00

Add SPDX License Identifier to all .gitignore files.

Signed-off-by: Masahiro Yamada 
Signed-off-by: Greg Kroah-Hartman

arm: Remove the ability to set HYP vectors outside of the decompressor

2020-03-24T10:56:05+00:00

Although we have to bounce between HYP and SVC to decompress and
relocate the kernel, we don't need to be able to use it in the
kernel itself. So let's drop the functionnality.

Since the vectors are never changed, there is no need to reset them
either, and nobody calls that stub anyway. The last function
(SOFT_RESTART) is still present in order to support kexec.

Signed-off-by: Marc Zyngier

arm: Remove HYP/Stage-2 page-table support

2020-03-24T10:56:05+00:00

Remove all traces of Stage-2 and HYP page table support.

Signed-off-by: Marc Zyngier 
Acked-by: Olof Johansson 
Acked-by: Arnd Bergmann 
Acked-by: Will Deacon 
Acked-by: Vladimir Murzin 
Acked-by: Catalin Marinas 
Acked-by: Linus Walleij 
Acked-by: Christoffer Dall

arm: Remove 32bit KVM host support

2020-03-24T10:56:04+00:00

That's it. Remove all references to KVM itself, and document
that although it is no more, the ABI between SVC and HYP still
exists.

Signed-off-by: Marc Zyngier 
Acked-by: Olof Johansson 
Acked-by: Arnd Bergmann 
Acked-by: Will Deacon 
Acked-by: Vladimir Murzin 
Acked-by: Catalin Marinas 
Acked-by: Linus Walleij 
Acked-by: Christoffer Dall