linux-kernel - Re: [PATCH v4 4/6] infiniband: cxgb4: Eliminate duplicate barriers on weakly-ordered archs

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Date:   Thu, 22 Mar 2018 10:33:11 -0400
From:   Sinan Kaya <okaya@...eaurora.org>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, linux-rdma@...r.kernel.org,
        timur@...eaurora.org, sulrich@...eaurora.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Steve Wise <swise@...lsio.com>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 4/6] infiniband: cxgb4: Eliminate duplicate barriers on
 weakly-ordered archs

One more time hopefully without HTML this time.


On 03/22/2018 08:48 AM, okaya@...eaurora.org wrote:
>> Can you remove the writeq change if it is too late for me to fix?
>>
>> This is an infrastructural issue on xtensa arch.
>>
>> Probably, it won't get fixed today.
>
> AFAIS, even writeq won't compile on this arch. I started questioning 
> this build test.

I found out that the solution is this:

#include <linux/io-64-nonatomic-hi-lo.h>

https://patchwork.ozlabs.org/patch/511801/

I did a compile test with this change on xtensa and it passed. I'll 
repost with the added diff.

+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -46,7 +46,7 @@
  #include <linux/timer.h>
  #include <linux/io.h>
  #include <linux/workqueue.h>
-
+#include <linux/io-64-nonatomic-hi-lo.h>
  #include <asm/byteorder.h>

  #include <net/net_namespace.h>