x86 guarants that memory writes to different locations are seen in order by other cores. If you write memory first to address A and then to B. Another core nev

x86 guarants that memory writes to different locations are seen in order by other cores. If you write memory first to address A and then to B. Another core never can see the B change without also seeing the A change at any moment in time. But in this case there is only a single memory location. So there is no ordering that could be violated in the first place.