hi,all
my environment is fc19, libvirt-1.0.5.8-1.fc19.x86_64
when systemctl start libvirtd.service , some warnning printed:
Jan 09 17:53:01 localhost.localdomain libvirtd[12516]: libvirt version: 1.0.5.8, package: 1.fc19 (Fedora Project, 2013-12-14-21:10:58, buildv...ct.org)
Jan 09 17:53:01 localhost.localdomain libvirtd[12516]: open("/var/run/libvirt/network/nwfilter.ltmp"): No such file or directory
Jan 09 17:53:02 localhost.localdomain libvirtd[12516]: internal error Cannot find suitable CPU model for given data
Jan 09 17:53:02 localhost.localdomain libvirtd[12516]: Failed to get host CPU
 
--virsh sysinfo---
  <processor>
    <entry name='socket_destination'>CPU 1</entry>
    <entry name='type'>Central Processor</entry>
    <entry name='family'>Other</entry>
    <entry name='manufacturer'>Bochs</entry>
    <entry name='version'>Not Specified</entry>
    <entry name='external_clock'>Unknown</entry>
    <entry name='max_speed'>2000 MHz</entry>
    <entry name='status'>Populated, Enabled</entry>
  </processor>
----proc/cpuinfo----------
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 44
model name      : Westmere E56xx/L56xx/X56xx (Nehalem-C)
stepping        : 1
microcode       : 0x1
cpu MHz         : 1861.999
cache size      : 4096 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 11
wp              : yes
flags           : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx lm constant_tsc nopl pni ssse3 cx16 sse4_1 sse4_2 x2apic popcnt aes hypervisor lahf_lm
bogomips        : 3723.99
clflush size    : 64
cache_alignment : 64
address sizes   : 44 bits physical, 48 bits virtual
power management: