[linux-audio-dev] lock-free ring buffer code

[Tim Hockin]

> >Also, several people have referred to the atomicity of int/pointer
> >read/write.  This is news to me - can someone point me at the spec for this?
> 
> its an architecture-specific issue. its not true on SPARCs and on some
> NUMA systems. it has nothing to do with a language per se.

Is it really true on x86?  Being that you can do unaligned accesses just
fine, you can certainly do cross-cacheline accesses.  Pardon the skepticism,
but I've never heard such assertions before.  Can anyone offer me a
specification for this?