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Date: Sun, 18 Mar 2018 19:48:05 -0600
From: Jason Gunthorpe <jgg@ziepe.ca>
To: Sinan Kaya <okaya@codeaurora.org>
Cc: Steve Wise <swise@opengridcomputing.com>, netdev@vger.kernel.org,
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Subject: Re: [PATCH v3 18/18] infiniband: cxgb4: Eliminate duplicate barriers
 on weakly-ordered archs
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On Sat, Mar 17, 2018 at 02:30:10PM -0400, Sinan Kaya wrote:

> Somebody also has to take a task and work very hard to get rid of __raw_writeX()
> APIs in drivers/net directory. It looked like a very common practice though
> it clearly violates multiarch portability concerns Jason and Deve highlighted.

When you posted your list I thought most of the hits were in what I'd
think of 'one-arch drivers', eg an IRQ controller or clock driver or
something.. Some might have a reason for it (eg avoiding the swap, for
instance), maybe it is a hold over from before writel_relaxed, or
maybe it is just a cargo-cult behavior..

It is the obviously multi-arch drivers that probably need some
attention..

Jason