On Wed, Jan 27, 2016 at 09:35:46AM +0100, Peter Zijlstra wrote:

On Tue, Jan 26, 2016 at 12:11:43PM -0800, Paul E. McKenney wrote:

quoted

So Peter, would you like to update your patch to include yourself
and Will as authors?

Sure, here goes.

---
Subject: documentation: Add disclaimer

It appears people are reading this document as a requirements list for
building hardware. This is not the intent of this document. Nor is it
particularly suited for this purpose.

The primary purpose of this document is our collective attempt to define
a set of primitives that (hopefully) allow us to write correct code on
the myriad of SMP platforms Linux supports.

Its a definite work in progress as our understanding of these platforms,
and memory ordering in general, progresses.

Nor does being mentioned in this document mean we think its a
particularly good idea; the data dependency barrier required by Alpha
being a prime example. Yes we have it, no you're insane to require it
when building new hardware.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 Documentation/memory-barriers.txt | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

Acked-by: Will Deacon <redacted>

Will