ARM: 9061/1: kprobes: fix UNPREDICTABLE warnings

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GNU as warns twice for this file:
Warning: using r15 results in unpredictable behaviour

via the Arm ARM:
K1.1.1 Overview of the constraints on Armv7 UNPREDICTABLE behaviors

  The term UNPREDICTABLE describes a number of cases where the
  architecture has a feature that software must not use.

Ard notes:
  These are selftests that aim to ensure that kprobe never attempts to
  replace the opcodes in question with a probe, but they are not
  actually executed, or expected to occur in real code.

Link: https://github.com/ClangBuiltLinux/linux/issues/1271
Link: https://reviews.llvm.org/D95586

Reported-by: kernelci.org bot <bot@kernelci.org>
Suggested-by: Peter Smith <peter.smith@arm.com>
Suggested-by: Renato Golin <rengolin@systemcall.eu>
Suggested-by: David Spickett <david.spickett@linaro.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

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Nick Desaulniers 2021-02-16 20:14:46 +01:00 • committed by Russell King

parent 08cbcb9702

commit e9d54be9ad

1 changed files with 2 additions and 2 deletions

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arch/arm/probes/kprobes/test-arm.c

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