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) Message-ID: <20180824203903.GJ2340@kib.kiev.ua> In-Reply-To: <32F22868-92ED-4223-84B5-77E72C7DCF50@grem.de> References: <20180819161642.GP2340@kib.kiev.ua> <20180820004512.5171fa75@bsd64.grem.de> <20180820150904.GS2340@kib.kiev.ua> <57B6DC4C-16EE-4B7B-B691-CB79D8C40289@grem.de> <20180822154603.GW2340@kib.kiev.ua> <C8BC1622-4F47-4E56-A428-46DAC5CE71B4@grem.de> <20180822211528.GB2340@kib.kiev.ua> <1C7DACDC-36F2-4E65-8C75-7B7215BB6546@grem.de> <20180824195947.GG2340@kib.kiev.ua> <32F22868-92ED-4223-84B5-77E72C7DCF50@grem.de>
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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.
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