Merge "X86_64: Replace x86_64 xchg instruction use"
am: a1eff4f

* commit 'a1eff4f279253bbc90d2697d7c15390bcab65d1e':
  X86_64: Replace x86_64 xchg instruction use

Change-Id: I3a95d8b662a424f0f218acf31894fdf86b4bbca2