[Xen-devel] Re: [PATCH 4/4] ACPI: Enable THERM_CONTROL MSR write for dom0 even cpufreq=xen

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 03/03/2009 01:23, "Wei, Gang" <gang.wei@xxxxxxxxx> wrote:

>>> Enable THERM_CONTROL MSR write for dom0 even cpufreq=xen
>>> 
>>> Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>
>> 
>> If dom0 is not the cpufreq controller then it is not pinned onto particular
>> physical CPUs and fiddling with MSRs is rather suspect.
> 
> Yes, you are right. But what we really need is simply pinning dom0 vcpus, not
> dom0 acting as cpufreq controller, am I right?
> We do expect the MSR throttling still work while xen behaves  as the cpufreq
> controller.

Then should the patch be dependent on opt_dom0_vcpus_pin?

 -- Keir



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