Re: Can't boot Xen on -current

[D'Arcy Cain <darcy%NetBSD.org@localhost>]

On 2017-05-04 12:47 PM, Andreas Gustafsson wrote:
> D'Arcy Cain wrote:
> > I sent this a few days ago but it hasn't shown up yet.  Perhaps my
> > attachment was too big.  I removed it and made it available here
> > instead: http://darcy.vex.net/XenFail.jpg
>
> Looks like PR 50446, "dom0 kernel panics at boot attaching agp", though
> I would have expected that to affect both 7_0_1_PATCH and -current.

Yes, that's the message I refer to below.

> > I am running Xen 4.6 on both a production NetBSD_7_0_1_PATCH system and
> > -current as of the last day or so.  Everything seems OK on the release
> > kernel but it fails to boot as per the attached screen shot.  The
> > keyboard is dead at that point so pressing a key to view more doesn't
> > work.  I tried Xen 4.6 as well as 4.8.  Same problem.  Here is my
> > boot.cfg line:
> >
> > menu=Boot Xen:load /netbsd-XEN3_DOM0.gz console=pc;multiboot /xen.gz
> > dom0_mem=256M dom0_max_vcpus=1 dom0_vcpus_pin
> >
> > I saw some messages about disabling apg but does that make sense if you
> > actually have an agp card?  I tried it anyway and it still failed.
>
> Does it fail in the same way, with agpattach() in the backtrace?
> Disabling agp works for me, but I don't have an agp card, and I don't
> use the onboard video either since the machine has a serial console.

Yes.

Serial console would be nice but serial ports seem to have gone the way 
of the dodo.

Here's a scary idea.  I should build a Xen client on a 
NetBSD_7_0_1_PATCH system and install a -current Xen server on it.  Then 
I can examine the console output much easier.

--
D'Arcy J.M. Cain <darcy%NetBSD.org@localhost>
http://www.NetBSD.org/ IM:darcy%Vex.Net@localhost