Re: [Xen-devel] What is the state of blktap2?

["David P. Quigley" <dpquigl@xxxxxxxxxxxxx>]

On Tue, 2010-01-26 at 09:10 +0200, Pasi Kärkkäinen wrote:
> On Mon, Jan 25, 2010 at 06:23:55PM -0500, David P. Quigley wrote:
> > On Fri, 2010-01-22 at 17:43 -0500, Konrad Rzeszutek Wilk wrote:
> > > > > Here is a little script that fixes most common problems.
> > > > > 
> > > > > grep -q xenfs /etc/fstab || echo "xenfs                   /proc/xen   
> > > > >             xenfs   defaults        0 0" >> /etc/fstab
> > > > > if grep -q ata_piix /etc/modprobe.conf ; then
> > > > >       NR=`cat /etc/modprobe.conf | grep scsi | wc -l`
> > > > >       grep -q pata_oldpiix /etc/modprobe.conf || echo "alias 
> > > > > scsi_hostadapter$NR pata_oldpiix" >> /etc/modprobe.conf
> > > > > fi
> > > > > grep -q hvc /etc/inittab || echo "co:2345:respawn:/sbin/agetty hvc0 
> > > > > 9600 vt100-nav" >> /etc/inittab
> > > > > grep -q hvc0 /etc/securetty || echo "hvc0" >> /etc/securetty
> > > > > 
> > > > 
> > > > 
> > > > Is this for a domU or a dom0 pvops kernel? I didn't think that the
> > > 
> > > Dom0. Thought the sections aobut /etc/inittab and seceretty can be used
> > > on DomU too.
> > > > terminal for dom0 would be changed to hvc but I'm new to this so I could
> > > 
> > > It has.
> > > 
> > > _______________________________________________
> > > Xen-devel mailing list
> > > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > > http://lists.xensource.com/xen-devel
> > 
> > I've been trying for the better part of today to get this working and I
> > seem to keep hitting a wall. I finally managed to get the kernel booted
> > but only with a serial console. I found out that some modules were
> > missing so that might have caused the lack of console support but now
> > the kernel won't boot to a prompt at all. I keep running into a null
> > dereference in the uhci driver. I can try to rebase Jeremy's patches
> > onto a newer kernel.org version but I'd first like to check to make sure
> > this isn't already a known problem with a solution.
> > 
> 
> You can try my .config files for pv_ops dom0 kernel, available from here:
> http://wiki.xensource.com/xenwiki/XenParavirtOps
> 
> in the "Troubleshooting" section.. just use "make oldconfig" with them.
> 
> -- Pasi

Thanks for the suggestion. I am already using your config though so its
not clear to me if its a config issue. Once I got that working and
booting I keep getting null pointer dereferences in some other code
thats not xen related. The only reason it might be affected by xen is
because its complaining about something with the PCI space. The error
text is below.

uhci_hcd 0000:00:1a.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
uhci_hcd 0000:00:1a.1: UHCI Host Controller
uhci_hcd 0000:00:1a.1: new USB bus registered, assigned bus number 3
uhci_hcd 0000:00:1a.1: irq 17, io base 0x0000ff00
uhci_hcd 0000:00:1a.1: host system error, PCI problems?
uhci_hcd 0000:00:1a.1: host controller halted, very bad!
uhci_hcd 0000:00:1a.1: HC died; cleaning up





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