Dear Maintainer,

Just to confirm the bug:

I'm running Debian stable, with libvirt, qemu and kvm from wheezy-backports (libvirt 1.2.1, API QEMU 1.2.1, hypervisor QEMU 1.7.1), in a HP ProLiant G7 server, with Xeon E5649 processor.

I can't start a domain, through virsh start, with any type of custom cpu model, even 486. E.g.:

  <cpu mode='custom' match='exact'>
    <model fallback='allow'>486</model>
  </cpu>

virsh start DomTest1 output:

error: Failed to start domain DomTest1
error: internal error: Cannot find suitable CPU model for given data

/var/log/libvirt/libvirtd.log related contents:

2014-04-25 13:26:48.174+0000: 9968: warning : x86Decode:1511 : Preferred CPU model 486 not allowed by hypervisor; closest supported model will be used 2014-04-25 13:26:48.174+0000: 9968: error : x86Decode:1564 : internal error: Cannot find suitable CPU model for given data

Running qemu-system-x86_64 by hand do not show any errors (qemu-system-x86_64 -enable-kvm -name DomTest1 -S -machine pc-i440fx-1.7,accel=kvm,usb=off -cpu 486 -m 1024.....)

Please, is there any workaround for this bug?

Ariel


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