Guest crashes on boot

[Nijskens Raf <raf-1zPVpAQ/vZCzQB+pC5nmwQ@public.gmane.org>]

Since I use kernel 2.6.22.1-27.fc7 on my Fedora 7, my guests keeps crashing.
I tried several versions of kvm, building it myself from source, 
installing it from rpm's, it's all the same.

On my previous kernel 2.6.21-1.3228.fc7, it worked just fine.

Sometimes I do get some output on crash:

[root@ViperL ~]# /usr/local/bin/qemu-system-x86_64 -hda 
/storage/qemu.img -cdrom /storage/FC-6-i386-DVD.iso -boot c -m 400 
-serial file:serial.log
Could not configure '/dev/rtc' to have a 1024 Hz timer. This is not a fatal
error, but for better emulation accuracy either use a 2.6 host Linux 
kernel or
type 'echo 1024 > /proc/sys/dev/rtc/max-user-freq' as root.
exception 13 (0)
rax 000000000000f001 rbx 000000000000d713 rcx 0000000000000001 rdx 
0000000000000000
rsi 00000000ffff004c rdi 000000000008f7f4 rsp 000000000000ffb8 rbp 
000000000000ffcc
r8  0000000000000000 r9  0000000000000000 r10 0000000000000000 r11 
0000000000000000
r12 0000000000000000 r13 0000000000000000 r14 0000000000000000 r15 
0000000000000000
rip 0000000000000a45 rflags 00033002
cs f000 (000f0000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ds 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
es 07c0 (00007c00/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ss 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
fs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
gs 0000 (00000000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
tr 0000 (19850000/00002088 p 1 dpl 0 db 0 s 0 type b l 0 g 0 avl 0)
ldt 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 0 type 2 l 0 g 0 avl 0)
gdt fa580/30
idt 0/3ff
cr0 60000010 cr2 0 cr3 0 cr4 0 cr8 0 efer 0
code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 --> 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00 00 00 00 00
Aborted

It's not only when I install machines, also when I use pre-existing 
machines. Serial.log stays empty.
It doesn't matter if I use qemu-system-x86_64 or qemu-kvm.
When I don't get an error it just hangs and it is stressing my cpu.

My system:
[root@ViperL ~]# uname -a
Linux ViperL 2.6.22.1-33.fc7 #1 SMP Mon Jul 23 17:33:07 EDT 2007 i686 
i686 i386 GNU/Linux

[root@ViperL ~]# cat /proc/cpuinfo
model name      : Intel(R) Core(TM)2 CPU         T7200  @ 2.00GHz

Anyone an idea?

Thx,

Raf

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