From c342f78217e822d2178265b0b1de232eeb717149 Mon Sep 17 00:00:00 2001
From: Will Deacon <will.deacon@arm.com>
Date: Thu, 23 Apr 2015 20:08:49 +0100
Subject: [PATCH] arm64: cmpxchg: patch in lse instructions when supported by
 the CPU

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>
---
Reading git-format-patch failed