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Date:      Tue, 21 Feb 2017 10:55:11 -0800
From:      Steve Kargl <sgk@troutmask.apl.washington.edu>
To:        Mateusz Guzik <mjguzik@gmail.com>, freebsd-current@freebsd.org, freebsd-hackers@freebsd.org
Subject:   Re: drm2, i915kms cause instant lock-up
Message-ID:  <20170221185511.GA98080@troutmask.apl.washington.edu>
In-Reply-To: <20170221052658.GA93413@troutmask.apl.washington.edu>
References:  <20170220235224.GA91194@troutmask.apl.washington.edu> <20170220235807.GC26759@dft-labs.eu> <20170221004340.GA91587@troutmask.apl.washington.edu> <20170221005030.GD26759@dft-labs.eu> <20170221052658.GA93413@troutmask.apl.washington.edu>

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On Mon, Feb 20, 2017 at 09:26:58PM -0800, Steve Kargl wrote:
> 
> Well, the good news seems to be that r313254 and older are 'ok'.
> So, something between r313943 and r313254 is triggering a the
> problem.  I'm still bisecting, but it might take a day or two.
> 

I've been able to narrow the range down to r313854 to r313943.
If I had to guess, the issue may be related to 

Author: kib
Date: Fri Feb 17 21:08:32 2017
New Revision: 313898
URL: https://svnweb.freebsd.org/changeset/base/313898

Log:
  Merge i386 and amd64 mtrr drivers.

I won't be able to investigate until later tonight (~ 10 hours from now).

-- 
Steve
20161221 https://www.youtube.com/watch?v=IbCHE-hONow



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