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[Xen-devel] RE: [PATCH 4/4] ACPI: Enable THERM_CONTROL MSR write for dom
| To: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] RE: [PATCH 4/4] ACPI: Enable THERM_CONTROL MSR write for dom0 even cpufreq=xen |
| From: | "Wei, Gang" <gang.wei@xxxxxxxxx> |
| Date: | Tue, 3 Mar 2009 16:59:05 +0800 |
| Accept-language: | en-US |
| Acceptlanguage: | en-US |
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| Delivery-date: | Tue, 03 Mar 2009 01:00:47 -0800 |
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| Thread-index: | AcmYErlDUyweCvc1R7ySGeeN+JHq9QDEtUERAB3zCFAAD/5OcwAALn/w |
| Thread-topic: | [PATCH 4/4] ACPI: Enable THERM_CONTROL MSR write for dom0 even cpufreq=xen |
On Tuesday, March 03, 2009 4:52 PM, Keir Fraser wrote: > 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? Oh, yes. We should add a check for opt_dom0_vcpus_pin. Jimmy _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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