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Date: Fri, 24 Aug 2018 23:39:03 +0300
From: Konstantin Belousov <kostikbel@gmail.com>
To: Michael Gmelin <freebsd@grem.de>
Cc: John Baldwin <jhb@FreeBSD.org>,
 "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>,
 Matthias Apitz <guru@unixarea.de>
Subject: Re: Fatal trap 12: page fault on Acer Chromebook 720 (peppy)
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On Fri, Aug 24, 2018 at 10:32:06PM +0200, Michael Gmelin wrote:
> 
> 
> > On 24. Aug 2018, at 21:59, Konstantin Belousov <kostikbel@gmail.com> wrote:
> > Please apply the following debugging patch on top of the previous 'fix'.
> > You need debug.late_console=0.
> 
> Unfortunately debug.late_console=0 doesn???t work on this machine (no more output on the console), I tried that earlier in this thread - hence the slightly complicated debugging code I had to add to see the contents of physmap.
> 
> I could run this code after boot (feeding it an identical physmap) to get debug output, would this make sense?
> 
Yes, with exactly the same physmap[].

Really, I do not need exactly the output from my patch, but just make it
clear why is_kernel_paddr() did not triggered selection from different
location.