linux-kernel - Re: [PATCH v4 5/6] IB/nes: Eliminate duplicate barriers on weakly-ordered archs

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Date:   Tue, 20 Mar 2018 10:29:33 -0600
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Sinan Kaya <okaya@...eaurora.org>
Cc:     linux-rdma@...r.kernel.org, timur@...eaurora.org,
        sulrich@...eaurora.org, linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Faisal Latif <faisal.latif@...el.com>,
        Doug Ledford <dledford@...hat.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 5/6] IB/nes: Eliminate duplicate barriers on
 weakly-ordered archs

On Tue, Mar 20, 2018 at 11:08:59AM -0500, Sinan Kaya wrote:

> > In this case, I strongly suspect nes really intended to say wmb()
> 
> Should I change barrier() to wmb() or leave it alone? I have no idea if 
> nes is actively being maintained or if it is EOL.

It is dead, and the HW doesn't work on 64 bit machines. Just ignore it
is my advice.

Jason