Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64...

Pull arm64 and cross-arch updates from Catalin Marinas:
 "Here's a slightly wider-spread set of updates for 5.9.

  Going outside the usual arch/arm64/ area is the removal of
  read_barrier_depends() series from Will and the MSI/IOMMU ID
  translation series from Lorenzo.

  The notable arm64 updates include ARMv8.4 TLBI range operations and
  translation level hint, time namespace support, and perf.

  Summary:

   - Removal of the tremendously unpopular read_barrier_depends()
     barrier, which is a NOP on all architectures apart from Alpha, in
     favour of allowing architectures to override READ_ONCE() and do
     whatever dance they need to do to ensure address dependencies
     provide LOAD -> LOAD/STORE ordering.

     This work also offers a potential solution if compilers are shown
     to convert LOAD -> LOAD address dependencies into control
     dependencies (e.g. under LTO), as weakly ordered architectures will
     effectively be able to upgrade READ_ONCE() to smp_load_acquire().
     The latter case is not used yet, but will be discussed further at
     LPC.

   - Make the MSI/IOMMU input/output ID translation PCI agnostic,
     augment the MSI/IOMMU ACPI/OF ID mapping APIs to accept an input ID
     bus-specific parameter and apply the resulting changes to the
     device ID space provided by the Freescale FSL bus.

   - arm64 support for TLBI range operations and translation table level
     hints (part of the ARMv8.4 architecture version).

   - Time namespace support for arm64.

   - Export the virtual and physical address sizes in vmcoreinfo for
     makedumpfile and crash utilities.

   - CPU feature handling cleanups and checks for programmer errors
     (overlapping bit-fields).

   - ACPI updates for arm64: disallow AML accesses to EFI code regions
     and kernel memory.

   - perf updates for arm64.

   - Miscellaneous fixes and cleanups, most notably PLT counting
     optimisation for module loading, recordmcount fix to ignore
     relocations other than R_AARCH64_CALL26, CMA areas reserved for
     gigantic pages on 16K and 64K configurations.

   - Trivial typos, duplicate words"

Link: http://lkml.kernel.org/r/20200710165203.31284-1-will@kernel.org
Link: http://lkml.kernel.org/r/20200619082013.13661-1-lorenzo.pieralisi@arm.com
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (82 commits)
  arm64: use IRQ_STACK_SIZE instead of THREAD_SIZE for irq stack
  arm64/mm: save memory access in check_and_switch_context() fast switch path
  arm64: sigcontext.h: delete duplicated word
  arm64: ptrace.h: delete duplicated word
  arm64: pgtable-hwdef.h: delete duplicated words
  bus: fsl-mc: Add ACPI support for fsl-mc
  bus/fsl-mc: Refactor the MSI domain creation in the DPRC driver
  of/irq: Make of_msi_map_rid() PCI bus agnostic
  of/irq: make of_msi_map_get_device_domain() bus agnostic
  dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus
  of/device: Add input id to of_dma_configure()
  of/iommu: Make of_map_rid() PCI agnostic
  ACPI/IORT: Add an input ID to acpi_dma_configure()
  ACPI/IORT: Remove useless PCI bus walk
  ACPI/IORT: Make iort_msi_map_rid() PCI agnostic
  ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic
  ACPI/IORT: Make iort_match_node_callback walk the ACPI namespace for NC
  arm64: enable time namespace support
  arm64/vdso: Restrict splitting VVAR VMA
  arm64/vdso: Handle faults on timens page
  ...

diff --cc arch/arm64/Makefile
Simple merge

diff --cc arch/arm64/configs/defconfig
Simple merge

diff --cc arch/arm64/include/asm/cpufeature.h
Simple merge

diff --cc arch/arm64/include/asm/vdso/compat_gettimeofday.h
index 9a625e8,d0cbb04..75cbae6
--- 1/arch/arm64/include/asm/vdso/compat_gettimeofday.h
--- 2/arch/arm64/include/asm/vdso/compat_gettimeofday.h
+++ b/arch/arm64/include/asm/vdso/compat_gettimeofday.h
@@@ -152,12 -153,18 +153,24 @@@ static __always_inline const struct vds
        return ret;
  }
  
+ #ifdef CONFIG_TIME_NS
+ static __always_inline const struct vdso_data *__arch_get_timens_vdso_data(void)
+ {
+       const struct vdso_data *ret;
+ 
+       /* See __arch_get_vdso_data(). */
+       asm volatile("mov %0, %1" : "=r"(ret) : "r"(_timens_data));
+ 
+       return ret;
+ }
+ #endif
+ 
 +static inline bool vdso_clocksource_ok(const struct vdso_data *vd)
 +{
 +      return vd->clock_mode == VDSO_CLOCKMODE_ARCHTIMER;
 +}
 +#define vdso_clocksource_ok   vdso_clocksource_ok
 +
  #endif /* !__ASSEMBLY__ */
  
  #endif /* __ASM_VDSO_GETTIMEOFDAY_H */

diff --cc arch/arm64/kernel/cpufeature.c
Simple merge

diff --cc arch/arm64/kernel/entry.S
Simple merge

diff --cc arch/arm64/kernel/vmlinux.lds.S
Simple merge

diff --cc arch/arm64/kvm/hyp-init.S
Simple merge

diff --cc drivers/perf/arm_smmuv3_pmu.c
Simple merge

diff --cc include/linux/compiler_types.h
Simple merge

diff --cc mm/memory.c
Simple merge