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Will Deacon authored
On CPUs which support the LSE atomic instructions introduced in ARMv8.1, it makes sense to use them in preference to ll/sc sequences. This patch introduces runtime patching of our cmpxchg primitives so that the LSE cas instruction is used instead. Reviewed-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
Will Deacon <will.deacon@arm.com>
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