Re: [PATCH] documentation: Add disclaimer

From: Will Deacon
Date: Wed Jan 27 2016 - 05:12:16 EST


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:
> > 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@xxxxxxxxxxxxx>
> ---
> Documentation/memory-barriers.txt | 18 +++++++++++++++++-
> 1 file changed, 17 insertions(+), 1 deletion(-)

Acked-by: Will Deacon <will.deacon@xxxxxxx>

Will