On 07/19/2013 09:34 AM, Peter Matulis wrote:

Hi everybody,

Using libvirt 1.0.0 how does one change the L2 cache size of the virtual CPU? I can change the CPU model but the cache size never changes:

<cpu mode='host-passthrough'/> <model>Nehalem</model>

OR

<cpu match='exact' mode='custom'/> <model>Nehalem</model>

Is there a qemu requirement?

As far as I know, qemu does not expose a command line option that lets you determine the size of the L2 cache that the guest will see; as long as qemu doesn't have the knob, then libvirt can't expose the knob in XML. So yes, you'd have to implement it in qemu first. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org