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RE: [Xen-users] cpufreq problems with hvm


  • To: "Birger Brunswiek" <birger.b@xxxxxxx>
  • From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
  • Date: Fri, 25 Jul 2008 13:01:25 +0800
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Thu, 24 Jul 2008 22:02:23 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: AcjtxW+nKLw6yaXWQMeVYPt+QBvv+gATUI+A
  • Thread-topic: [Xen-users] cpufreq problems with hvm

>From: Birger Brunswiek [mailto:birger.b@xxxxxxx] 
>Sent: 2008年7月25日 3:43
>
>Does anyone know if the modules (?) which are responsible to 
>get the freq 
>scaling right in PVs can be used/ported to an HVM? Similar to 
>the unmodified 
>drivers to use a paravirtualised disk and netif.
>

That pv time stuff is hardly put as a module, which is in the core 
of kernel, and thus hardly fit into HVM. One alternative is to use
other clocksource for HVM, instead of tsc.

Thanks,
Kevin

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