http://bugzilla.kernel.org/show_bug.cgi?id=13259
--- Comment #12 from ykzhao <yakui.z...@intel.com> 2009-05-08 01:44:44 ---
Hi, James
Thanks for the test.
After the boot option of "processor.ignore_tpc" is added, the T-state limit
will be ignored. In such case the CPU0 won't be set to T3 state in the boot
phase.
For the suspend/resume issue:
Maybe I don't explain it very clear in comment #7. The command of "cat
/proc/acpi/processor/CPU0/throttling" will re-obtained the current T-state. And
this is realized by the following flowchart on this box:
a. Read the T-state MSR status register
b. If the status value can be found in the _TSS package, the correct
T-state is obtained. Otherwise the invalid T-state is returned.
Unfortunately the T-state status is not found in the _TSS package after
suspend/resume. And it will report that it is beyond the T-state.
thanks.
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