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xen-users
Re: [Xen-users] Problem with Kernel Hard Panic at Boot on Dom0 Kernel
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Hi Nicholas,
On 27 Apr 2009, at 16:39, Nicholas W wrote:
I am currently trying to make a usable Xen Dom0 kernel which I can use
with Ubuntu 9.04 . I have compiled a kernel and made an initial
ramdisk using gcc 4.2 along the lines described on the posting here:
http://cwshep.blogspot.com/2008/12/howto-ubuntu-intrepid-ibex-810-xen-dom0.html
However... When I try and boot the kernel it gets passed the disk
initialization and about as far as the USB initialization and then
crashes with a hard kernel panic, the stack trace is so long it
scrolls of the top, and I cannot see which module or part of the code
that caused the crash. Could someone tell me how I can capture this
information. Perhaps its not really a Xen specific question, but then
again there maybe things I can or cannot do with the Hypervisor
already loaded - I don't know.
I can't tell you how you can capture the output, but what I can tell
you is, that I have experienced quite a few problems with that
particular kernel myself. Even if you get the kernel itself working,
there are things, it has massive problems with, PCI passthrough for
example is a total drag (devices can be visible, but not really
working).
And since you are going for a lower kernel version than the original
Ubuntu 9.04 anyways, I suggest you check out the Debian Dom0/U kernel
(source/binary packages on: http://packages.debian.org/search?keywords=linux+2.6.26+xen&searchon=names&suite=stable§ion=all)
. It's 2.6.26, but it works quite well here (I'm on Hardy though). If
you're lucky, it will even install from the original debian package,
so definitely worth a try, if you don't know how to build your own
package.
Other than that, there is always the option of getting the vanilla
kernel 2.6.29 and patching it with the gentoo patchset (from: http://code.google.com/p/gentoo-xen-kernel/downloads/list)
, but I haven't been able to test that one for a prolonged period of
time, so no guarantees there, other than that building a Dom0/U kernel
that actually boots is possible.
I hope this helps you a little bit,
Paul.
- --
Paul Schulze
Mail: avlex82@xxxxxxxxx
Why can't a programmer tell the difference between Halloween and
Christmas?
Because OCT31 = DEC25.
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