Hi,
I want to use kvm as VMM for virtualization, my os is Centos 5.4 and everything is fine when I'm using "2.6.18-164.el5". but for my project I need to compile a kernel so I compile 2.6.31.5 kernel and boot it.
and kvm kernel modules are loaded.

[root@localhost boot]# lsmod | grep kvm
kvm_amd 28536 0
kvm 143404 1 kvm_amd

I'm using this instructions to install a VM:

qemu-img create -f qcow ubuntu.img 10G
qemu-kvm -hda ubuntu.img -cdrom ~/ISO/ubuntu-9.10-desktop-i386.iso -boot d -m 512

But :(
when I want to install VM on my image file I've got this error

Message from syslogd@ at Sat Nov 7 18:48:10 2009 ...
localhost kernel: Oops: 0000 [#1] SMP
Message from syslogd@ at Sat Nov 7 18:48:10 2009 ...
localhost kernel: last sysfs file: /sys/devices/pci0000:00/0000:00:14.4/0000:03:0e.0/local_cpus
Message from syslogd@ at Sat Nov 7 18:48:10 2009 ...
localhost kernel: Process qemu-kvm (pid: 4924, ti=f203c000 task=f6a50400 task.ti=f203c000)
Message from syslogd@ at Sat Nov 7 18:48:10 2009 ...
localhost kernel: Stack:
Message from syslogd@ at Sat Nov 7 18:48:10 2009 ...
localhost kernel: Call Trace:
Message from syslogd@ at Sat Nov 7 18:48:10 2009 ...
localhost kernel: Code: 14 8b 01 d1 e8 39 c2 0f 43 c2 89 01 83 c4 28 5b 5e 5f 5d c3 55 57 56 89 c6 53 bb 08 00 00 00 83 ec 4c 8b 40 40 8b 3d 38 e9 85 c0 <83> 78 70 00 b8 c0 1a 8f c0 0f 44 df 64 8b 0d e4 f9 8e c0 8d 04
Message from syslogd@ at Sat Nov 7 18:48:10 2009 ...
localhost kernel: EIP: [] balance_dirty_pages_ratelimited_nr+0x17/0x262 SS:ESP 0068:f203cce4
Message from syslogd@ at Sat Nov 7 18:48:10 2009 ...
localhost kernel: CR2: 00000000fcf497f4

Please help me! it's urgent