xen 3.0.4 does not run

[Cesar Veiga <cveiga@cesga.es>]

Hi all,
I had installed the Xen 3.0.3 on a opensuse 10.2 (64 bits) on new 
quadcore intel processors with VT support, on a Dell Power Edge 1955 
blade. I had many machines working. This installation had a poor network 
performance when using hardware virtualization. My applications for MPI 
require low network latencies.
I try to upgrade to Xen 3,0.4 to check the network performance.
I downloaded the tarball, and I installed it.
Now my machines doesn't run. Aditionally at the secont xm related comand 
used the dom0 crashs.
I ask previously for help at xen-users, there they recommend me the 
xen-devel list.
Any help is welcomed
regards, cesar

Last lines of xm dmesg say:
(XEN) Std. Loglevel: Errors and warnings
(XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
(XEN) Xen is relinquishing VGA console.
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch 
input to Xen).
(XEN) microcode: error! Bad data in microcode data file
(XEN) microcode: Error in the microcode data
(XEN) mtrr: type mismatch for d8000000,1000000 old: write-back new: 
write-combining


My /var/log/xen/xend.log says:

[2007-03-19 15:34:57 xend 3391] INFO (SrvDaemon:283) Xend Daemon started
[2007-03-19 15:34:57 xend 3391] INFO (SrvDaemon:287) Xend changeset: Mon 
Jan 08 14:09:25 2007 +0000 13130:4d34be661f31.
[2007-03-19 15:34:58 xend.XendDomainInfo 3391] DEBUG 
(XendDomainInfo:212) XendDomainInfo.recreate({'paused': 0, 'cpu_time'
: 16194471880L, 'ssidref': 0, 'handle': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
0, 0, 0, 0, 0, 0], 'shutdown_reason': 0, 'dying': 0
, 'dom': 0, 'mem_kb': 512144, 'maxmem_kb': 17179869180, 'max_vcpu_id': 
7, 'crashed': 0, 'running': 1, 'shutdown': 0, 'onli
ne_vcpus': 8, 'blocked': 0})
[2007-03-19 15:34:58 xend.XendDomainInfo 3391] INFO (XendDomainInfo:224) 
Recreating domain 0, UUID 00000000-0000-0000-0000
-000000000000.
[2007-03-19 15:34:58 xend.XendDomainInfo 3391] WARNING 
(XendDomainInfo:246) No vm path in store for existing domain 0
[2007-03-19 15:34:58 xend.XendDomainInfo 3391] DEBUG 
(XendDomainInfo:712) Storing VM details: {'shadow_memory': '0', 'uuid
': '00000000-0000-0000-0000-000000000000', 'on_reboot': 'restart', 
'on_poweroff': 'destroy', 'name': 'Domain-0', 'xend/res
tart_count': '0', 'vcpus': '8', 'vcpu_avail': '1', 'memory': '501', 
'on_crash': 'restart', 'maxmem': '501'}
[2007-03-19 15:34:58 xend.XendDomainInfo 3391] DEBUG 
(XendDomainInfo:747) Storing domain details: {'cpu/1/availability': '
offline', 'cpu/3/availability': 'offline', 'name': 'Domain-0', 
'console/limit': '1048576', 'cpu/2/availability': 'offline'
, 'vm': '/vm/00000000-0000-0000-0000-000000000000', 'domid': '0', 
'cpu/7/availability': 'offline', 'cpu/0/availability': '
online', 'memory/target': '513024', 'cpu/5/availability': 'offline', 
'cpu/6/availability': 'offline', 'cpu/4/availability'
: 'offline'}
[2007-03-19 15:34:58 xend 3391] DEBUG (XendDomain:153) number of vcpus 
to use is 0
[2007-03-19 15:34:58 xend.XendDomainInfo 3391] DEBUG 
(XendDomainInfo:933) XendDomainInfo.handleShutdownWatch
xen04:/etc/init.d