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Date:   Sat, 9 Feb 2019 16:54:32 +0100
From:   Ian Kumlien <ian.kumlien@...il.com>
To:     Saeed Mahameed <saeedm@....mellanox.co.il>
Cc:     Cong Wang <xiyou.wangcong@...il.com>,
        David Miller <davem@...emloft.net>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [ISSUE][4.20.6] mlx5 and checksum failures

On Fri, Feb 8, 2019 at 5:29 PM Ian Kumlien <ian.kumlien@...il.com> wrote
> On Thu, Feb 7, 2019 at 11:01 PM Ian Kumlien <ian.kumlien@...il.com> wrote:
> > On Thu, Feb 7, 2019 at 7:43 PM Saeed Mahameed <saeedm@....mellanox.co.il> wrote:
> > > On Thu, Feb 7, 2019 at 2:17 AM Ian Kumlien <ian.kumlien@...il.com> wrote:
> > > > On Thu, Feb 7, 2019 at 2:01 AM Saeed Mahameed <saeedm@....mellanox.co.il> wrote:
> > > > > On Wed, Feb 6, 2019 at 3:00 PM Ian Kumlien <ian.kumlien@...il.com> wrote:
> > > > > > It changes directly after the first hw checksum failure, I don't know why =/
> > > > >
> > > > > weird, Maybe a real check-summing issue/corruption on the PCI ?!
> > > >
> > > > Actually, it seems to have been introduced in 4.20.6 - 4.20.5 works just fine
>
> > > Great, the difference is only 120 patches.
> > > that is bisect-able, it will only take 5 iterations to find the
> > > offending commit.
> >
> > I just wish it wasn't a server that takes, what feels like 5 minutes to boot...
> >
> > All of these seas of sensors 2d and 3d... =P
> >
> > But, yep, that's the plan
>
> Huh, spent most of the day with two bisects and none of them yielded
> any results....
>
> Looks like I'll have to start investigating the elrepo kernel-ml build =(

Just realized that it's not an entirely fair comparison - since
retpolines wasn't enabled, damned old compilers...

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