arm64 fixes for 5.11-rc4

Hi Linus,

Please pull the arm64 fixes below. Thanks.

The following changes since commit 7c53f6b671f4aba70ff15e1b05148b10d58c2837:

Linux 5.11-rc3 (2021-01-10 14:34:50 -0800)

are available in the Git repository at:

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

for you to fetch changes up to 3a57a643a851dbb1c4a1819394ca009e3bfa4813:

arm64: selftests: Fix spelling of 'Mismatch' (2021-01-15 10:05:27 +0000)

----------------------------------------------------------------
arm64 fixes:

- Set the minimum GCC version to 5.1 for arm64 due to earlier compiler bugs.

- Make atomic helpers __always_inline to avoid a section mismatch when compiling with clang.

- Fix the CMA and crashkernel reservations to use ZONE_DMA (remove the arm64_dma32_phys_limit variable, no longer needed with a dynamic ZONE_DMA sizing in 5.11).

- Remove redundant IRQ flag tracing that was leaving lockdep inconsistent with the hardware state.

- Revert perf events based hard lockup detector that was causing smp_processor_id() to be called in preemptible context.

- Some trivial cleanups - spelling fix, renaming S_FRAME_SIZE to PT_REGS_SIZE, function prototypes added.

----------------------------------------------------------------
Arnd Bergmann (1):
arm64: make atomic helpers __always_inline

Catalin Marinas (1):
arm64: Remove arm64_dma32_phys_limit and its uses

Jianlin Lv (1):
arm64: rename S_FRAME_SIZE to PT_REGS_SIZE

Mark Brown (1):
arm64: selftests: Fix spelling of 'Mismatch'

Mark Rutland (2):
arm64: entry: remove redundant IRQ flag tracing
arm64: syscall: include prototype for EL0 SVC functions

Will Deacon (2):
Revert "arm64: Enable perf events based hard lockup detector" compiler.h: Raise minimum version of GCC to 5.1 for arm64

 arch/arm64/Kconfig                             |  2 --
 arch/arm64/include/asm/atomic.h                | 10 +++----
 arch/arm64/include/asm/processor.h             |  3 +-
 arch/arm64/kernel/asm-offsets.c                |  2 +-
 arch/arm64/kernel/entry-ftrace.S               | 12 ++++----
 arch/arm64/kernel/entry.S                      | 14 ++++-----
 arch/arm64/kernel/perf_event.c                 | 41 ++------------------------
 arch/arm64/kernel/probes/kprobes_trampoline.S  |  6 ++--
 arch/arm64/kernel/signal.c                     |  7 -----
 arch/arm64/kernel/syscall.c                    | 10 ++-----
 arch/arm64/mm/init.c                           | 33 +++++++++++----------
 drivers/perf/arm_pmu.c                         |  5 ----
 include/asm-generic/bitops/atomic.h            |  6 ++--
 include/linux/compiler-gcc.h                   |  6 ++++
 include/linux/perf/arm_pmu.h                   |  2 --
 tools/testing/selftests/arm64/fp/fpsimd-test.S |  2 +-
 tools/testing/selftests/arm64/fp/sve-test.S    |  2 +-
 17 files changed, 56 insertions(+), 107 deletions(-)

Catalin