[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <627b30c0-fb98-08a7-9a09-a5f45368740c@deltatee.com>
Date: Fri, 15 Jun 2018 14:01:24 -0600
From: Logan Gunthorpe <logang@...tatee.com>
To: Serge Semin <fancer.lancer@...il.com>
Cc: linux-kernel@...r.kernel.org, linux-ntb@...glegroups.com,
Jon Mason <jdmason@...zu.us>,
Dave Jiang <dave.jiang@...el.com>,
Allen Hubbe <allenbh@...il.com>,
Shyam Sundar S K <Shyam-sundar.S-k@....com>,
Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCH 6/8] NTB: perf: Fix support for hardware that doesn't have
port numbers
On 15/06/18 01:50 PM, Serge Semin wrote:
> On Fri, Jun 08, 2018 at 06:08:17PM -0600, Logan Gunthorpe <logang@...tatee.com> wrote:
>> Legacy drivers do not have port numbers (but is reliably only two ports)
>> and was broken by the recent commit that added mult-port support to
>> ntb_perf. This is especially important to support the cross link
>> topology which is perfectly symmetric and cannot assign unique port
>> numbers easily.
>>
>
> Please, see the comment to the patch 3/8. I explained everything there
> including the fact, that the Intel/AMD drivers do have unique port numbers
> assigned.
See my comments as to why this is impossible.
Logan
Powered by blists - more mailing lists