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RE: [Xen-devel] [PATCH 0/4] ACPI: Backport to make dom0 throttling works with MSR

  • To: Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Wei, Gang" <gang.wei@xxxxxxxxx>
  • Date: Thu, 26 Feb 2009 23:59:23 +0800
  • Accept-language: en-US
  • Acceptlanguage: en-US
  • Cc: Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>
  • Delivery-date: Thu, 26 Feb 2009 08:04:30 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcmYEo0ZRraBr+eqQUi48lH/0wI6eQAEDCcgAAG+8lA=
  • Thread-topic: [Xen-devel] [PATCH 0/4] ACPI: Backport to make dom0 throttling works with MSR
>> This patchset backport a series of T-State patches from kernel upstream
>> to make dom0 ACPI throttling works with MSR( Fixed H/W). Meanwhile, it
>> enable THERM_CONTROL MSR write for dom0 even cpufreq=xen.
> 
> On modern CPUs, is the TSC invariant to T-state throttling? If so, which
> generation did this start happening? 

My perspective is yes. But  I don't know which generation it started from yet.

Jimmy
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