[GIT PULL] Emulated one-byte cmpxchg() for ARM

[Paul E. McKenney]

Hello, Linux,

Please pull the following cmpxchg()-related changes:

  git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git tags/cmpxchg.2024.07.12a
  # HEAD: f1b5644862c5b594f48ad01d7880a96b95d83a2f: ARM: Emulate one-byte cmpxchg (2024-07-04 13:32:41 -0700)

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ARM: Provide one-byte cmpxchg emulation

This series provides emulated one-byte cmpxchg() support for ARM
using the cmpxchg_emu_u8() function that uses a four-byte cmpxchg()
to emulate the one-byte variant.

Similar patches for emulation of one-byte cmpxchg() for arc, sh, and
xtensa have not yet received maintainer acks, so they are slated for
the v6.12 merge window.

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Paul E. McKenney (1):
      ARM: Emulate one-byte cmpxchg

 arch/arm/Kconfig               | 1 +
 arch/arm/include/asm/cmpxchg.h | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)