[GIT PULL] arm64 fixes for -rc5

[Will Deacon]

Hi Linus,

Please pull these arm64 fixes for -rc5. It's all pretty minor but the
main fix is sorting out how we deal with return values from 32-bit system
calls as audit expects error codes to be sign-extended to 64 bits

Brief summary in the tag.

Cheers,

Will

--->8

The following changes since commit d8a719059b9dc963aa190598778ac804ff3e6a87:

  Revert "mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge" (2021-07-21 11:28:09 +0100)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git tags/arm64-fixes

for you to fetch changes up to 0c32706dac1b0a72713184246952ab0f54327c21:

  arm64: stacktrace: avoid tracing arch_stack_walk() (2021-08-03 10:39:35 +0100)

----------------------------------------------------------------
arm64 fixes for -rc5

- Fix extension/truncation of return values from 32-bit system calls

- Fix interaction between unwinding and tracing

- Fix spurious toolchain warning emitted during make

- Fix Kconfig help text for RANDOMIZE_MODULE_REGION_FULL

----------------------------------------------------------------
Barry Song (1):
      arm64: fix the doc of RANDOMIZE_MODULE_REGION_FULL

Mark Rutland (3):
      arm64: fix compat syscall return truncation
      arm64: stacktrace: fix comment
      arm64: stacktrace: avoid tracing arch_stack_walk()

Masahiro Yamada (1):
      arm64: move warning about toolchains to archprepare

 arch/arm64/Kconfig                  |  9 ++++++---
 arch/arm64/Makefile                 | 21 ++++++++++++---------
 arch/arm64/include/asm/ptrace.h     | 12 +++++++++++-
 arch/arm64/include/asm/stacktrace.h |  2 +-
 arch/arm64/include/asm/syscall.h    | 19 ++++++++++---------
 arch/arm64/kernel/kaslr.c           |  4 +++-
 arch/arm64/kernel/ptrace.c          |  2 +-
 arch/arm64/kernel/signal.c          |  3 ++-
 arch/arm64/kernel/stacktrace.c      |  2 +-
 arch/arm64/kernel/syscall.c         |  9 +++------
 10 files changed, 50 insertions(+), 33 deletions(-)