linux-kernel - Re: [PATCH 06/16] ntb: add check and comment for link up to mw_count and mw_get

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Message-ID: <63c4b0fa-2f03-6313-2d60-c6dab53bc3a5@deltatee.com>
Date:   Thu, 29 Jun 2017 14:17:02 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     Allen Hubbe <Allen.Hubbe@...l.com>, linux-ntb@...glegroups.com,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     'Jon Mason' <jdmason@...zu.us>,
        'Dave Jiang' <dave.jiang@...el.com>,
        'Bjorn Helgaas' <bhelgaas@...gle.com>,
        'Greg Kroah-Hartman' <gregkh@...uxfoundation.org>,
        'Kurt Schwemmer' <kurt.schwemmer@...rosemi.com>,
        'Stephen Bates' <sbates@...thlin.com>,
        'Serge Semin' <fancer.lancer@...il.com>
Subject: Re: [PATCH 06/16] ntb: add check and comment for link up to mw_count
 and mw_get_align

On 6/29/2017 2:13 PM, Allen Hubbe wrote:
> Unfortunately, it is to work around hardware errata.  That is not so trivial to fix.

Can you describe more what the work around is doing? Can you share the 
code? It seems odd that a workaround is based on the alignment 
restrictions of the mws.

Logan