Pull ARM development updates from Russell King:

 - Make it clear __swp_entry_to_pte() uses PTE_TYPE_FAULT

 - Updates for setting vmalloc size via command line to resolve an issue
   with the 8MiB hole not properly being accounted for, and clean up the
   code.

 - ftrace support for module PLTs

 - Spelling fixes

 - kbuild updates for removing generated files and pattern rules for
   generating files

 - Clang/llvm updates

 - Change the way the kernel is mapped, placing it in vmalloc space
   instead.

 - Remove arm_pm_restart from arm and aarch64.

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (29 commits)
  ARM: 9098/1: ftrace: MODULE_PLT: Fix build problem without DYNAMIC_FTRACE
  ARM: 9097/1: mmu: Declare section start/end correctly
  ARM: 9096/1: Remove arm_pm_restart()
  ARM: 9095/1: ARM64: Remove arm_pm_restart()
  ARM: 9094/1: Register with kernel restart handler
  ARM: 9093/1: drivers: firmwapsci: Register with kernel restart handler
  ARM: 9092/1: xen: Register with kernel restart handler
  ARM: 9091/1: Revert "mm: qsd8x50: Fix incorrect permission faults"
  ARM: 9090/1: Map the lowmem and kernel separately
  ARM: 9089/1: Define kernel physical section start and end
  ARM: 9088/1: Split KERNEL_OFFSET from PAGE_OFFSET
  ARM: 9087/1: kprobes: test-thumb: fix for LLVM_IAS=1
  ARM: 9086/1: syscalls: use pattern rules to generate syscall headers
  ARM: 9085/1: remove unneeded abi parameter to syscallnr.sh
  ARM: 9084/1: simplify the build rule of mach-types.h
  ARM: 9083/1: uncompress: atags_to_fdt: Spelling s/REturn/Return/
  ARM: 9082/1: [v2] mark prepare_page_table as __init
  ARM: 9079/1: ftrace: Add MODULE_PLTS support
  ARM: 9078/1: Add warn suppress parameter to arm_gen_branch_link()
  ARM: 9077/1: PLT: Move struct plt_entries definition to header
  ...

Use pattern rules to unify similar build rules between OABI and EABI.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

You do not need to pass the abi parameter to syscallnr.sh because it
parses all the lines of syscall.tbl except comments anyway.

Simplify the code. Also, remove unneeded single-quoting.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

The directory of mach-types.h is created a couple of lines above:

  _dummy := $(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)') \

The 'mkdir -p' command is redundant.

scripts/Kbuild.include defines real-prereqs as a shorthand for
$(filter-out $(PHONY),$^). Let's use it to simplify the code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

Wire up the quotactl_fd syscall.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>

In commit fa8b90070a80 ("quota: wire up quotactl_path") we have wired up
new quotactl_path syscall. However some people in LWN discussion have
objected that the path based syscall is missing dirfd and flags argument
which is mostly standard for contemporary path based syscalls. Indeed
they have a point and after a discussion with Christian Brauner and
Sascha Hauer I've decided to disable the syscall for now and update its
API. Since there is no userspace currently using that syscall and it
hasn't been released in any major release, we should be fine.

CC: Christian Brauner <christian.brauner@ubuntu.com>
CC: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.kernel.org/lkml/20210512153621.n5u43jsytbik4yze@wittgenstein
Signed-off-by: Jan Kara <jack@suse.cz>

Pull ARM updates from Russell King:

 - Fix BSS size calculation for LLVM

 - Improve robustness of kernel entry around v7_invalidate_l1

 - Fix and update kprobes assembly

 - Correct breakpoint overflow handler check

 - Pause function graph tracer when suspending a CPU

 - Switch to generic syscallhdr.sh and syscalltbl.sh

 - Remove now unused set_kernel_text_r[wo] functions

 - Updates for ptdump (__init marking and using DEFINE_SHOW_ATTRIBUTE)

 - Fix for interrupted SMC (secure) calls

 - Remove Compaq Personal Server platform

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: footbridge: remove personal server platform
  ARM: 9075/1: kernel: Fix interrupted SMC calls
  ARM: 9074/1: ptdump: convert to DEFINE_SHOW_ATTRIBUTE
  ARM: 9073/1: ptdump: add __init section marker to three functions
  ARM: 9072/1: mm: remove set_kernel_text_r[ow]()
  ARM: 9067/1: syscalls: switch to generic syscallhdr.sh
  ARM: 9068/1: syscalls: switch to generic syscalltbl.sh
  ARM: 9066/1: ftrace: pause/unpause function graph tracer in cpu_suspend()
  ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook
  ARM: 9062/1: kprobes: rewrite test-arm.c in UAL
  ARM: 9061/1: kprobes: fix UNPREDICTABLE warnings
  ARM: 9060/1: kexec: Remove unused kexec_reinit callback
  ARM: 9059/1: cache-v7: get rid of mini-stack
  ARM: 9058/1: cache-v7: refactor v7_invalidate_l1 to avoid clobbering r5/r6
  ARM: 9057/1: cache-v7: add missing ISB after cache level selection
  ARM: 9056/1: decompressor: fix BSS size calculation for LLVM ld.lld

Pull Landlock LSM from James Morris:
 "Add Landlock, a new LSM from Mickaël Salaün.

  Briefly, Landlock provides for unprivileged application sandboxing.

  From Mickaël's cover letter:
    "The goal of Landlock is to enable to restrict ambient rights (e.g.
     global filesystem access) for a set of processes. Because Landlock
     is a stackable LSM [1], it makes possible to create safe security
     sandboxes as new security layers in addition to the existing
     system-wide access-controls. This kind of sandbox is expected to
     help mitigate the security impact of bugs or unexpected/malicious
     behaviors in user-space applications. Landlock empowers any
     process, including unprivileged ones, to securely restrict
     themselves.

     Landlock is inspired by seccomp-bpf but instead of filtering
     syscalls and their raw arguments, a Landlock rule can restrict the
     use of kernel objects like file hierarchies, according to the
     kernel semantic. Landlock also takes inspiration from other OS
     sandbox mechanisms: XNU Sandbox, FreeBSD Capsicum or OpenBSD
     Pledge/Unveil.

     In this current form, Landlock misses some access-control features.
     This enables to minimize this patch series and ease review. This
     series still addresses multiple use cases, especially with the
     combined use of seccomp-bpf: applications with built-in sandboxing,
     init systems, security sandbox tools and security-oriented APIs [2]"

  The cover letter and v34 posting is here:

      https://lore.kernel.org/linux-security-module/20210422154123.13086-1-mic@digikod.net/

  See also:

      https://landlock.io/

  This code has had extensive design discussion and review over several
  years"

Link: https://lore.kernel.org/lkml/50db058a-7dde-441b-a7f9-f6837fe8b69f@schaufler-ca.com/ [1]
Link: https://lore.kernel.org/lkml/f646e1c7-33cf-333f-070c-0a40ad0468cd@digikod.net/ [2]

* tag 'landlock_v34' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  landlock: Enable user space to infer supported features
  landlock: Add user and kernel documentation
  samples/landlock: Add a sandbox manager example
  selftests/landlock: Add user space tests
  landlock: Add syscall implementations
  arch: Wire up Landlock syscalls
  fs,security: Add sb_delete hook
  landlock: Support filesystem access-control
  LSM: Infrastructure management of the superblock
  landlock: Add ptrace restrictions
  landlock: Set up the security framework and manage credentials
  landlock: Add ruleset and domain management
  landlock: Add object management

Wire up the following system calls for all architectures:
* landlock_create_ruleset(2)
* landlock_add_rule(2)
* landlock_restrict_self(2)

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: James Morris <jmorris@namei.org>
Cc: Jann Horn <jannh@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Serge E. Hallyn <serge@hallyn.com>
Signed-off-by: Mickaël Salaün <mic@linux.microsoft.com>
Link: https://lore.kernel.org/r/20210422154123.13086-10-mic@digikod.net
Signed-off-by: James Morris <jamorris@linux.microsoft.com>

Many architectures duplicate similar shell scripts.

This commit converts ARM to use scripts/syscallhdr.sh, and also
collects OABI/OEBI syscalls into unistd-eabi.h/unistd-oabi.h,
removing unistd-common.h.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>