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Date: Thu, 21 Feb 2013 16:05:33 +0000
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Subject: Re: r247095 Boot Failure
From: matt <sendtomatt@gmail.com>
To: Sergey Kandaurov <pluknet@gmail.com>
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Cc: FreeBSD-current <freebsd-current@freebsd.org>, nparhar@gmail.com,
 Shawn Webb <lattera@gmail.com>
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On Thu, Feb 21, 2013 at 3:46 PM, Sergey Kandaurov <pluknet@gmail.com> wrote:

>
>
> Currently that corresponds to:
> set kern.smp.disabled=1
> set hw.ata.ata_dma=0
> set hw.ata.atapi_dma=0
> set hw.ata.wc=0
> set hw.eisa_slots=0
> set kern.eventtimer.periodic=1
> set kern.geom.part.check_integrity=0
>
> See /boot/menu-commands.4th
>
> --
> wbr,
> pluknet
>

Enabling beastie, safe mode boots.
The userland thread wasn't terribly descriptive about symptoms, and this
sure doesn't *look* like a userland problem.

Trying to reduce it to a specific option
First, no variables or alternate kernels work until I type show (that seems
broken)

Setting all of the kern variables allow it to boot
Setting all of the hw.ata.*dma doesn't change anything
Setting hw.ata.wc causes a panic/reboot

Matt