On Wed, 2010-12-29 at 14:51 +0000, Ben Hutchings wrote: > On Wed, 2010-12-29 at 15:13 +0100, Timothée GROS wrote: > > Even in dom0 ? > > Yes - dom0 has access to most physical devices but *not* physical CPUs. > > > How could i control my CPU speed then ? > > That would have to be done in the Xen hypervisor, not the dom0 kernel. Correct. I'm not that familiar with power-management under Xen but a good reference appears to be http://wiki.xen.org/xenwiki/xenpm (there is a configuration option where a unique dom0 VCPU is pinned to each PCPU in a strict 1-1 mapping which allows regular Linux power management to be used, I don't know how well supported this is though. Normally the hypervisor based stuff would be recommended AFAIK) Ian. -- Ian Campbell Badges? We don't need no stinking badges.
Attachment:
signature.asc
Description: This is a digitally signed message part