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SubjectRe: [PATCH 0/24] make atomic_read() behave consistently across all architectures
Linus Torvalds wrote:
> So the only reason to add back "volatile" to the atomic_read() sequence is
> not to fix bugs, but to _hide_ the bugs better. They're still there, they
> are just a lot harder to trigger, and tend to be a lot subtler.

What about barrier removal? With consistent semantics we could optimize a fair
amount of code. Whether or not that constitutes "premature" optimization is
open to debate, but there's no question we could reduce our register wiping in
some places.

-- Chris
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