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Re: [Xen-devel] pv_ops dom0 testing

Todd Deshane wrote:
On Sat, Nov 29, 2008 at 5:32 PM, Aviv Grafi <aviv@xxxxxxxxxxxx> wrote:
I solved this one by adding "console=hvc0 earlyprintk=xen" to the dom0
kernel boot line (thanks to Jeremy Fitzhardinge [jeremy@xxxxxxxx]).

Thanks again Aviv. I am really close now. The screen still shows nothing,
but the debug output has the dom0 kernel boot.
(Not sure why that would be... any thoughts?)

In the debug output however I successfully get to the the
(initramfs) prompt.

Full output attached, but some interesting parts inline:

(initramfs)cat /proc/cmdline
root=/dev/sda1 ro console=tty0 xencons=ttyS0,115200 console=hvc0 earlyprintk=xen

(initramfs) cat /proc/modules
ata_piix 33586 1 - Loading 0xffffffffa0127000
libata 196576 1 ata_piix, Live 0xffffffffa00f5000
scsi_mod 184792 1 libata, Live 0xffffffffa00c5000
r8169 46084 0 - Live 0xffffffffa00b7000
mii 14464 1 r8169, Live 0xffffffffa00b1000
tg3 139396 0 - Live 0xffffffffa008c000
libphy 32896 1 tg3, Live 0xffffffffa007e000
ehci_hcd 46726 1 - Loading 0xffffffffa0070000
uhci_hcd 34037 1 - Loading 0xffffffffa0062000
usbcore 174512 3 ehci_hcd,uhci_hcd, Live 0xffffffffa0035000
thermal 27552 0 - Live 0xffffffffa002c000
processor 55224 1 thermal, Live 0xffffffffa0019000
fan 13832 0 - Live 0xffffffffa0013000
fuse 65728 1 - Live 0xffffffffa0000000

a listing of /dev doesn't show any sd* devices.

What's your scsi host controller?

USB is known to have problems, so I generally disable it for now, until I've worked out what's failing. You have an oops in your trace which could be leaving other things in a bad state.

So I am guessing I am running into a driver issue at this
point. I will dig around more and compare my working
vanilla linux config with the dom0 kernel to see if there
is something missing in my dom0 kernel.

Yes, that would be interesting to compare.

Thanks for the help so far and if anything comes to mind
why I don't see console output on the screen (and only in
the debug output) that would be helpful to me.

I'll report back on progress.

If there are any obvious known workarounds, problems, bugs etc.
let me know. I know that the pv_ops dom0 kernel is very much in
development, but I am willing to try to work through that.

Thanks for playing with this.


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