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Re: [Xen-devel] pv_ops dom0 and kernel console output problem

To: Todd Deshane <deshantm@xxxxxxxxx>
Subject: Re: [Xen-devel] pv_ops dom0 and kernel console output problem
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Mon, 29 Dec 2008 19:02:38 +0200
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Andrew Lyon <andrew.lyon@xxxxxxxxx>
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On Mon, Dec 29, 2008 at 11:55:26AM -0500, Todd Deshane wrote:
> On Mon, Dec 29, 2008 at 11:51 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> > On Fri, Dec 26, 2008 at 01:51:45PM +0200, Pasi Kärkkäinen wrote:
> >> Hello list!
> >>
> >> I'm trying out pv_ops dom0 patches, and I'm having problems getting any 
> >> output
> >> from the kernel to the console.
> >>
> >> grub config:
> >>
> >> title dom0-test (2.6.28-rc8-tip)
> >>       root (hd0,0)
> >>       kernel /xen-3.3.gz dom0_mem=512M noreboot loglvl=all guest_loglvl=all
> >>       module /vmlinuz-2.6.28-rc8-tip ro root=/dev/vg00/lv01 console=hvc0 
> >> earlyprintk=xen pci=nomsi
> >>       module /initrd-2.6.28-rc8-tip.img
> >>
> >> Is that correct? I'd appreciate comments from people who got it working..
> >>
> >> I can see Xen messages on the (vga) console, but the last line I see is:
> >>
> >> (XEN)  Xen is relinquishing VGA console
> >>
> >> I don't see anything from the actual dom0 kernel..
> >>
> >> I'm running Xen 3.3.0-2 from Fedora rawhide (includes backported pv_ops
> >> sysfs ballooning support).
> >>
> >> - Is there something else that's needed from (xen-unstable) hypervisor?
> >> - Or is this problem related only to the pv_ops dom0 kernel?
> >>
> >> My Xen hypervisor and dom0 kernel are both 32 bit PAE.
> >>
> >> Thanks!
> >>
> >
> > Do you guys have any suggestions? (CC's added..)
> >
> > I've verified the kernel itself is fine, ie. it boots and works just fine on
> > bare metal..
> >
> 
> Did you add an hvc console to the runlevel?
> 

Actually, no, I didn't add hvc console.. That's a stupid mistake from me.
Thanks for pointing that out.

Then again, shouldn't I see kernel messages when it boots up? 

I can only see Xen hypervisor console messages.. nothing from dom0 kernel.. 

-- Pasi

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