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From: Pyun YongHyeon <pyunyh@gmail.com>
Date: Thu, 8 Jul 2010 14:55:54 -0700
To: Chris Buechler <cbuechler@gmail.com>
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Cc: Jack Vogel <jfvogel@gmail.com>, net@freebsd.org
Subject: Re: page fault in igb on 8.1
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On Thu, Jul 08, 2010 at 05:36:44PM -0400, Chris Buechler wrote:
> On Thu, Jul 8, 2010 at 5:03 PM, Jack Vogel <jfvogel@gmail.com> wrote:
> > Am confused, does not the code in 8.1 have that fix, looked to me like it
> > did?
> >
> 
> Maybe I'm confused, but it looks like RELENG_8_1 has the IGB_DBA_ALIGN
> rather than 1.
> 

No, this comes from controller requirement. Alignment 1 is not
supported. Please show your back trace to narrow down the cause of
panic.

> -                IGB_DBA_ALIGN, 0,    /* alignment, bounds */
> +                1, 0,            /* alignment, bounds */
> 
> http://svn.freebsd.org/viewvc/base/releng/8.1/sys/dev/e1000/if_igb.c?revision=209145&view=markup
> 
> It was reverted back in this commit.
> http://svn.freebsd.org/viewvc/base/releng/8.1/sys/dev/e1000/if_igb.c?r1=205283&r2=206211
> 
> Chris