Pull arm64 updates from Will Deacon:
- Support for new architectural features introduced in ARMv8.1:
* Privileged Access Never (PAN) to catch user pointer dereferences in
the kernel
* Large System Extension (LSE) for building scalable atomics and locks
(depends on locking/arch-atomic from tip, which is included here)
* Hardware Dirty Bit Management (DBM) for updating clean PTEs
automatically
- Move our PSCI implementation out into drivers/firmware/, where it can
be shared with arch/arm/. RMK has also pulled this component branch
and has additional patches moving arch/arm/ over. MAINTAINERS is
updated accordingly.
- Better BUG implementation based on the BRK instruction for trapping
- Leaf TLB invalidation for unmapping user pages
- Support for PROBE_ONLY PCI configurations
- Various cleanups and non-critical fixes, including:
* Always flush FP/SIMD state over exec()
* Restrict memblock additions based on range of linear mapping
* Ensure *(LIST_POISON) generates a fatal fault
* Context-tracking syscall return no longer corrupts return value when
not forced on.
* Alternatives patching synchronisation/stability improvements
* Signed sub-word cmpxchg compare fix (tickled by HAVE_CMPXCHG_LOCAL)
* Force SMP=y
* Hide direct DCC access from userspace
* Fix EFI stub memory allocation when DRAM starts at 0x0
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (92 commits)
arm64: flush FP/SIMD state correctly after execve()
arm64: makefile: fix perf_callchain.o kconfig dependency
arm64: set MAX_MEMBLOCK_ADDR according to linear region size
of/fdt: make memblock maximum physical address arch configurable
arm64: Fix source code file path in comments
arm64: entry: always restore x0 from the stack on syscall return
arm64: mdscr_el1: avoid exposing DCC to userspace
arm64: kconfig: Move LIST_POISON to a safe value
arm64: Add __exception_irq_entry definition for function graph
arm64: mm: ensure patched kernel text is fetched from PoU
arm64: alternatives: ensure secondary CPUs execute ISB after patching
arm64: make ll/sc __cmpxchg_case_##name asm consistent
arm64: dma-mapping: Simplify pgprot handling
arm64: restore cpu suspend/resume functionality
ARM64: PCI: do not enable resources on PROBE_ONLY systems
arm64: cmpxchg: truncate sub-word signed types before comparison
arm64: alternative: put secondary CPUs into polling loop during patch
arm64/Documentation: clarify wording regarding memory below the Image
arm64: lse: fix lse cmpxchg code indentation
arm64: remove redundant object file list
...
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